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cefdca0a86
836960 Commits
Author | SHA1 | Message | Date | |
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Peter Xu
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cefdca0a86 |
userfaultfd/sysctl: add vm.unprivileged_userfaultfd
Userfaultfd can be misued to make it easier to exploit existing use-after-free (and similar) bugs that might otherwise only make a short window or race condition available. By using userfaultfd to stall a kernel thread, a malicious program can keep some state that it wrote, stable for an extended period, which it can then access using an existing exploit. While it doesn't cause the exploit itself, and while it's not the only thing that can stall a kernel thread when accessing a memory location, it's one of the few that never needs privilege. We can add a flag, allowing userfaultfd to be restricted, so that in general it won't be useable by arbitrary user programs, but in environments that require userfaultfd it can be turned back on. Add a global sysctl knob "vm.unprivileged_userfaultfd" to control whether userfaultfd is allowed by unprivileged users. When this is set to zero, only privileged users (root user, or users with the CAP_SYS_PTRACE capability) will be able to use the userfaultfd syscalls. Andrea said: : The only difference between the bpf sysctl and the userfaultfd sysctl : this way is that the bpf sysctl adds the CAP_SYS_ADMIN capability : requirement, while userfaultfd adds the CAP_SYS_PTRACE requirement, : because the userfaultfd monitor is more likely to need CAP_SYS_PTRACE : already if it's doing other kind of tracking on processes runtime, in : addition of userfaultfd. In other words both syscalls works only for : root, when the two sysctl are opt-in set to 1. [dgilbert@redhat.com: changelog additions] [akpm@linux-foundation.org: documentation tweak, per Mike] Link: http://lkml.kernel.org/r/20190319030722.12441-2-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com> Suggested-by: Andrea Arcangeli <aarcange@redhat.com> Suggested-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Maxime Coquelin <maxime.coquelin@redhat.com> Cc: Maya Gokhale <gokhale2@llnl.gov> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Pavel Emelyanov <xemul@virtuozzo.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Martin Cracauer <cracauer@cons.org> Cc: Denis Plotnikov <dplotnikov@virtuozzo.com> Cc: Marty McFadden <mcfadden8@llnl.gov> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@suse.de> Cc: "Kirill A . Shutemov" <kirill@shutemov.name> Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Yue Hu
|
f0fd50504a |
mm/cma_debug.c: fix the break condition in cma_maxchunk_get()
If not find zero bit in find_next_zero_bit(), it will return the size parameter passed in, so the start bit should be compared with bitmap_maxno rather than cma->count. Although getting maxchunk is working fine due to zero value of order_per_bit currently, the operation will be stuck if order_per_bit is set as non-zero. Link: http://lkml.kernel.org/r/20190319092734.276-1-zbestahu@gmail.com Signed-off-by: Yue Hu <huyue2@yulong.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Joe Perches <joe@perches.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Safonov <d.safonov@partner.samsung.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Yafang Shao
|
3b775998ec |
include/trace/events/vmscan.h: drop zone id from kswapd tracepoints
It is not clear how the zone id is useful in kswapd tracepoints and the id itself is not really easy to process because it depends on the configuration (available zones). Let's drop the id for now. If somebody really needs that information then the zone name should be used instead. [mhocko@suse.com: new changelog] Link: http://lkml.kernel.org/r/1552451813-10833-1-git-send-email-laoar.shao@gmail.com Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Qian Cai
|
745e10146c |
mm/slab.c: fix an infinite loop in leaks_show()
"cat /proc/slab_allocators" could hang forever on SMP machines with
kmemleak or object debugging enabled due to other CPUs running do_drain()
will keep making kmemleak_object or debug_objects_cache dirty and unable
to escape the first loop in leaks_show(),
do {
set_store_user_clean(cachep);
drain_cpu_caches(cachep);
...
} while (!is_store_user_clean(cachep));
For example,
do_drain
slabs_destroy
slab_destroy
kmem_cache_free
__cache_free
___cache_free
kmemleak_free_recursive
delete_object_full
__delete_object
put_object
free_object_rcu
kmem_cache_free
cache_free_debugcheck --> dirty kmemleak_object
One approach is to check cachep->name and skip both kmemleak_object and
debug_objects_cache in leaks_show(). The other is to set store_user_clean
after drain_cpu_caches() which leaves a small window between
drain_cpu_caches() and set_store_user_clean() where per-CPU caches could
be dirty again lead to slightly wrong information has been stored but
could also speed up things significantly which sounds like a good
compromise. For example,
# cat /proc/slab_allocators
0m42.778s # 1st approach
0m0.737s # 2nd approach
[akpm@linux-foundation.org: tweak comment]
Link: http://lkml.kernel.org/r/20190411032635.10325-1-cai@lca.pw
Fixes:
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Liu Xiang
|
632b2ef0c7 |
mm/slub.c: update the comment about slab frozen
Now frozen slab can only be on the per cpu partial list. Link: http://lkml.kernel.org/r/1554022325-11305-1-git-send-email-liu.xiang6@zte.com.cn Signed-off-by: Liu Xiang <liu.xiang6@zte.com.cn> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Li RongQing
|
517f9f1ee5 |
mm/slab.c: remove unneed check in cpuup_canceled
nc is a member of percpu allocation memory, and cannot be NULL. Link: http://lkml.kernel.org/r/1553159353-5056-1-git-send-email-lirongqing@baidu.com Signed-off-by: Li RongQing <lirongqing@baidu.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Liu Xiang
|
a4d3f8916c |
slub: remove useless kmem_cache_debug() before remove_full()
When CONFIG_SLUB_DEBUG is not enabled, remove_full() is empty. While CONFIG_SLUB_DEBUG is enabled, remove_full() can check s->flags by itself. So kmem_cache_debug() is useless and can be removed. Link: http://lkml.kernel.org/r/1552577313-2830-1-git-send-email-liu.xiang6@zte.com.cn Signed-off-by: Liu Xiang <liu.xiang6@zte.com.cn> Acked-by: David Rientjes <rientjes@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tobin C. Harding
|
3e05617cea |
mm: remove stale comment from page struct
We now use the slab_list list_head instead of the lru list_head. This comment has become stale. Remove stale comment from page struct slab_list list_head. Link: http://lkml.kernel.org/r/20190402230545.2929-8-tobin@kernel.org Signed-off-by: Tobin C. Harding <tobin@kernel.org> Acked-by: Christoph Lameter <cl@linux.com> Reviewed-by: Roman Gushchin <guro@fb.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tobin C. Harding
|
16cb0ec75b |
slab: use slab_list instead of lru
Currently we use the page->lru list for maintaining lists of slabs. We have a list in the page structure (slab_list) that can be used for this purpose. Doing so makes the code cleaner since we are not overloading the lru list. Use the slab_list instead of the lru list for maintaining lists of slabs. Link: http://lkml.kernel.org/r/20190402230545.2929-7-tobin@kernel.org Signed-off-by: Tobin C. Harding <tobin@kernel.org> Acked-by: Christoph Lameter <cl@linux.com> Reviewed-by: Roman Gushchin <guro@fb.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tobin C. Harding
|
916ac05278 |
slub: use slab_list instead of lru
Currently we use the page->lru list for maintaining lists of slabs. We have a list in the page structure (slab_list) that can be used for this purpose. Doing so makes the code cleaner since we are not overloading the lru list. Use the slab_list instead of the lru list for maintaining lists of slabs. Link: http://lkml.kernel.org/r/20190402230545.2929-6-tobin@kernel.org Signed-off-by: Tobin C. Harding <tobin@kernel.org> Acked-by: Christoph Lameter <cl@linux.com> Reviewed-by: Roman Gushchin <guro@fb.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tobin C. Harding
|
6dfd1b653c |
slub: add comments to endif pre-processor macros
SLUB allocator makes heavy use of ifdef/endif pre-processor macros. The pairing of these statements is at times hard to follow e.g. if the pair are further than a screen apart or if there are nested pairs. We can reduce cognitive load by adding a comment to the endif statement of form #ifdef CONFIG_FOO ... #endif /* CONFIG_FOO */ Add comments to endif pre-processor macros if ifdef/endif pair is not immediately apparent. Link: http://lkml.kernel.org/r/20190402230545.2929-5-tobin@kernel.org Signed-off-by: Tobin C. Harding <tobin@kernel.org> Acked-by: Christoph Lameter <cl@linux.com> Reviewed-by: Roman Gushchin <guro@fb.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tobin C. Harding
|
adab7b6818 |
slob: use slab_list instead of lru
Currently we use the page->lru list for maintaining lists of slabs. We
have a list_head in the page structure (slab_list) that can be used for
this purpose. Doing so makes the code cleaner since we are not
overloading the lru list.
The slab_list is part of a union within the page struct (included here
stripped down):
union {
struct { /* Page cache and anonymous pages */
struct list_head lru;
...
};
struct {
dma_addr_t dma_addr;
};
struct { /* slab, slob and slub */
union {
struct list_head slab_list;
struct { /* Partial pages */
struct page *next;
int pages; /* Nr of pages left */
int pobjects; /* Approximate count */
};
};
...
Here we see that slab_list and lru are the same bits. We can verify that
this change is safe to do by examining the object file produced from
slob.c before and after this patch is applied.
Steps taken to verify:
1. checkout current tip of Linus' tree
commit
|
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Tobin C. Harding
|
130e8e09e2 |
slob: respect list_head abstraction layer
Currently we reach inside the list_head. This is a violation of the layer of abstraction provided by the list_head. It makes the code fragile. More importantly it makes the code wicked hard to understand. The code reaches into the list_head structure to counteract the fact that the list _may_ have been changed during slob_page_alloc(). Instead of this we can add a return parameter to slob_page_alloc() to signal that the list was modified (list_del() called with page->lru to remove page from the freelist). This code is concerned with an optimisation that counters the tendency for first fit allocation algorithm to fragment memory into many small chunks at the front of the memory pool. Since the page is only removed from the list when an allocation uses _all_ the remaining memory in the page then in this special case fragmentation does not occur and we therefore do not need the optimisation. Add a return parameter to slob_page_alloc() to signal that the allocation used up the whole page and that the page was removed from the free list. After calling slob_page_alloc() check the return value just added and only attempt optimisation if the page is still on the list. Use list_head API instead of reaching into the list_head structure to check if sp is at the front of the list. Link: http://lkml.kernel.org/r/20190402230545.2929-3-tobin@kernel.org Signed-off-by: Tobin C. Harding <tobin@kernel.org> Acked-by: Christoph Lameter <cl@linux.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Roman Gushchin <guro@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tobin C. Harding
|
a16b538499 |
list: add function list_rotate_to_front()
Patch series "mm: Use slab_list list_head instead of lru", v5. Currently the slab allocators (ab)use the struct page 'lru' list_head. We have a list head for slab allocators to use, 'slab_list'. During v2 it was noted by Christoph that the SLOB allocator was reaching into a list_head, this version adds 2 patches to the front of the set to fix that. Clean up all three allocators by using the 'slab_list' list_head instead of overloading the 'lru' list_head. This patch (of 7): Currently if we wish to rotate a list until a specific item is at the front of the list we can call list_move_tail(head, list). Note that the arguments are the reverse way to the usual use of list_move_tail(list, head). This is a hack, it depends on the developer knowing how the list_head operates internally which violates the layer of abstraction offered by the list_head. Also, it is not intuitive so the next developer to come along must study list.h in order to fully understand what is meant by the call, while this is 'good for' the developer it makes reading the code harder. We should have an function appropriately named that does this if there are users for it intree. By grep'ing the tree for list_move_tail() and list_tail() and attempting to guess the argument order from the names it seems there is only one place currently in the tree that does this - the slob allocatator. Add function list_rotate_to_front() to rotate a list until the specified item is at the front of the list. Link: http://lkml.kernel.org/r/20190402230545.2929-2-tobin@kernel.org Signed-off-by: Tobin C. Harding <tobin@kernel.org> Reviewed-by: Christoph Lameter <cl@linux.com> Reviewed-by: Roman Gushchin <guro@fb.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Shuning Zhang
|
e091eab028 |
ocfs2: fix ocfs2 read inode data panic in ocfs2_iget
In some cases, ocfs2_iget() reads the data of inode, which has been deleted for some reason. That will make the system panic. So We should judge whether this inode has been deleted, and tell the caller that the inode is a bad inode. For example, the ocfs2 is used as the backed of nfs, and the client is nfsv3. This issue can be reproduced by the following steps. on the nfs server side, ..../patha/pathb Step 1: The process A was scheduled before calling the function fh_verify. Step 2: The process B is removing the 'pathb', and just completed the call to function dput. Then the dentry of 'pathb' has been deleted from the dcache, and all ancestors have been deleted also. The relationship of dentry and inode was deleted through the function hlist_del_init. The following is the call stack. dentry_iput->hlist_del_init(&dentry->d_u.d_alias) At this time, the inode is still in the dcache. Step 3: The process A call the function ocfs2_get_dentry, which get the inode from dcache. Then the refcount of inode is 1. The following is the call stack. nfsd3_proc_getacl->fh_verify->exportfs_decode_fh->fh_to_dentry(ocfs2_get_dentry) Step 4: Dirty pages are flushed by bdi threads. So the inode of 'patha' is evicted, and this directory was deleted. But the inode of 'pathb' can't be evicted, because the refcount of the inode was 1. Step 5: The process A keep running, and call the function reconnect_path(in exportfs_decode_fh), which call function ocfs2_get_parent of ocfs2. Get the block number of parent directory(patha) by the name of ... Then read the data from disk by the block number. But this inode has been deleted, so the system panic. Process A Process B 1. in nfsd3_proc_getacl | 2. | dput 3. fh_to_dentry(ocfs2_get_dentry) | 4. bdi flush dirty cache | 5. ocfs2_iget | [283465.542049] OCFS2: ERROR (device sdp): ocfs2_validate_inode_block: Invalid dinode #580640: OCFS2_VALID_FL not set [283465.545490] Kernel panic - not syncing: OCFS2: (device sdp): panic forced after error [283465.546889] CPU: 5 PID: 12416 Comm: nfsd Tainted: G W 4.1.12-124.18.6.el6uek.bug28762940v3.x86_64 #2 [283465.548382] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/21/2015 [283465.549657] 0000000000000000 ffff8800a56fb7b8 ffffffff816e839c ffffffffa0514758 [283465.550392] 000000000008dc20 ffff8800a56fb838 ffffffff816e62d3 0000000000000008 [283465.551056] ffff880000000010 ffff8800a56fb848 ffff8800a56fb7e8 ffff88005df9f000 [283465.551710] Call Trace: [283465.552516] [<ffffffff816e839c>] dump_stack+0x63/0x81 [283465.553291] [<ffffffff816e62d3>] panic+0xcb/0x21b [283465.554037] [<ffffffffa04e66b0>] ocfs2_handle_error+0xf0/0xf0 [ocfs2] [283465.554882] [<ffffffffa04e7737>] __ocfs2_error+0x67/0x70 [ocfs2] [283465.555768] [<ffffffffa049c0f9>] ocfs2_validate_inode_block+0x229/0x230 [ocfs2] [283465.556683] [<ffffffffa047bcbc>] ocfs2_read_blocks+0x46c/0x7b0 [ocfs2] [283465.557408] [<ffffffffa049bed0>] ? ocfs2_inode_cache_io_unlock+0x20/0x20 [ocfs2] [283465.557973] [<ffffffffa049f0eb>] ocfs2_read_inode_block_full+0x3b/0x60 [ocfs2] [283465.558525] [<ffffffffa049f5ba>] ocfs2_iget+0x4aa/0x880 [ocfs2] [283465.559082] [<ffffffffa049146e>] ocfs2_get_parent+0x9e/0x220 [ocfs2] [283465.559622] [<ffffffff81297c05>] reconnect_path+0xb5/0x300 [283465.560156] [<ffffffff81297f46>] exportfs_decode_fh+0xf6/0x2b0 [283465.560708] [<ffffffffa062faf0>] ? nfsd_proc_getattr+0xa0/0xa0 [nfsd] [283465.561262] [<ffffffff810a8196>] ? prepare_creds+0x26/0x110 [283465.561932] [<ffffffffa0630860>] fh_verify+0x350/0x660 [nfsd] [283465.562862] [<ffffffffa0637804>] ? nfsd_cache_lookup+0x44/0x630 [nfsd] [283465.563697] [<ffffffffa063a8b9>] nfsd3_proc_getattr+0x69/0xf0 [nfsd] [283465.564510] [<ffffffffa062cf60>] nfsd_dispatch+0xe0/0x290 [nfsd] [283465.565358] [<ffffffffa05eb892>] ? svc_tcp_adjust_wspace+0x12/0x30 [sunrpc] [283465.566272] [<ffffffffa05ea652>] svc_process_common+0x412/0x6a0 [sunrpc] [283465.567155] [<ffffffffa05eaa03>] svc_process+0x123/0x210 [sunrpc] [283465.568020] [<ffffffffa062c90f>] nfsd+0xff/0x170 [nfsd] [283465.568962] [<ffffffffa062c810>] ? nfsd_destroy+0x80/0x80 [nfsd] [283465.570112] [<ffffffff810a622b>] kthread+0xcb/0xf0 [283465.571099] [<ffffffff810a6160>] ? kthread_create_on_node+0x180/0x180 [283465.572114] [<ffffffff816f11b8>] ret_from_fork+0x58/0x90 [283465.573156] [<ffffffff810a6160>] ? kthread_create_on_node+0x180/0x180 Link: http://lkml.kernel.org/r/1554185919-3010-1-git-send-email-sunny.s.zhang@oracle.com Signed-off-by: Shuning Zhang <sunny.s.zhang@oracle.com> Reviewed-by: Joseph Qi <jiangqi903@gmail.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: piaojun <piaojun@huawei.com> Cc: "Gang He" <ghe@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Phillip Potter
|
9dc2108d66 |
ocfs2: use common file type conversion
Deduplicate the ocfs2 file type conversion implementation and remove
OCFS2_FT_* definitions - file systems that use the same file types as
defined by POSIX do not need to define their own versions and can use the
common helper functions decared in fs_types.h and implemented in
fs_types.c
Common implementation can be found via
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Joseph Qi
|
3fde8c60b3 |
MAINTAINERS: add Joseph as ocfs2 co-maintainer
I have been contributing and reviewing to the ocfs2 filesystem for recent years and I'm willing to continue doing so. Volunteer as a co-maintainer for ocfs2 filesystem. Link: http://lkml.kernel.org/r/f56d75b3-2be5-25c2-51f2-c3f5423d4f14@gmail.com Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mark Fasheh <mfasheh@suse.com> Cc: piaojun <piaojun@huawei.com> Cc: "Gang He" <ghe@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <jiangqi903@gmail.com> Cc: Changwei Ge <gechangwei@live.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Sabyasachi Gupta
|
e602b26ce4 |
arch/sh/boards/mach-dreamcast/irq.c: Remove duplicate header
Remove linux/irq.h which is included more than once. Link: http://lkml.kernel.org/r/5c8682ef.1c69fb81.5a1ea.2e7f@mx.google.com Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com> Acked-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: Mukesh Ojha <mojha@codeaurora.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Cyrill Gorcunov
|
a9e73998f9 |
kernel/sys.c: prctl: fix false positive in validate_prctl_map()
While validating new map we require the @start_data to be strictly less
than @end_data, which is fine for regular applications (this is why this
nit didn't trigger for that long). These members are set from executable
loaders such as elf handers, still it is pretty valid to have a loadable
data section with zero size in file, in such case the start_data is equal
to end_data once kernel loader finishes.
As a result when we're trying to restore such programs the procedure fails
and the kernel returns -EINVAL. From the image dump of a program:
| "mm_start_code": "0x400000",
| "mm_end_code": "0x8f5fb4",
| "mm_start_data": "0xf1bfb0",
| "mm_end_data": "0xf1bfb0",
Thus we need to change validate_prctl_map from strictly less to less or
equal operator use.
Link: http://lkml.kernel.org/r/20190408143554.GY1421@uranus.lan
Fixes:
|
||
Kai Shen
|
2bf753e64b |
mm/hugetlb.c: don't put_page in lock of hugetlb_lock
spinlock recursion happened when do LTP test:
#!/bin/bash
./runltp -p -f hugetlb &
./runltp -p -f hugetlb &
./runltp -p -f hugetlb &
./runltp -p -f hugetlb &
./runltp -p -f hugetlb &
The dtor returned by get_compound_page_dtor in __put_compound_page may be
the function of free_huge_page which will lock the hugetlb_lock, so don't
put_page in lock of hugetlb_lock.
BUG: spinlock recursion on CPU#0, hugemmap05/1079
lock: hugetlb_lock+0x0/0x18, .magic: dead4ead, .owner: hugemmap05/1079, .owner_cpu: 0
Call trace:
dump_backtrace+0x0/0x198
show_stack+0x24/0x30
dump_stack+0xa4/0xcc
spin_dump+0x84/0xa8
do_raw_spin_lock+0xd0/0x108
_raw_spin_lock+0x20/0x30
free_huge_page+0x9c/0x260
__put_compound_page+0x44/0x50
__put_page+0x2c/0x60
alloc_surplus_huge_page.constprop.19+0xf0/0x140
hugetlb_acct_memory+0x104/0x378
hugetlb_reserve_pages+0xe0/0x250
hugetlbfs_file_mmap+0xc0/0x140
mmap_region+0x3e8/0x5b0
do_mmap+0x280/0x460
vm_mmap_pgoff+0xf4/0x128
ksys_mmap_pgoff+0xb4/0x258
__arm64_sys_mmap+0x34/0x48
el0_svc_common+0x78/0x130
el0_svc_handler+0x38/0x78
el0_svc+0x8/0xc
Link: http://lkml.kernel.org/r/b8ade452-2d6b-0372-32c2-703644032b47@huawei.com
Fixes:
|
||
Dan Williams
|
fce86ff580 |
mm/huge_memory: fix vmf_insert_pfn_{pmd, pud}() crash, handle unaligned addresses
Starting with |
||
Linus Torvalds
|
a13f065550 |
IOMMU Updates for Linux v5.2
Including: - ATS support for ARM-SMMU-v3. - AUX domain support in the IOMMU-API and the Intel VT-d driver. This adds support for multiple DMA address spaces per (PCI-)device. The use-case is to multiplex devices between host and KVM guests in a more flexible way than supported by SR-IOV. - The Rest are smaller cleanups and fixes, two of which needed to be reverted after testing in linux-next. -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEr9jSbILcajRFYWYyK/BELZcBGuMFAlzZWPkACgkQK/BELZcB GuPdRRAAj/RcgVn7fqmNDM02xe6C5PuwBGYkXnC+atDrTQWbFsM0JE3YTWEHJ+66 7RMoYaksRaSBsn3QuX3b6+g6E+exhGoQ0BfkmuF8StUXAsaxvzGxvuk+cP0o4/mK pZkj3BddS4ycRqQPsVEbgJGRzL39dxWHe7p3/FfwgV+HzVonURFozU0HixLAoBhr uS0LpBiG8uGCMvO6yhTmPmfrbsSAcMivb7LlmsaykXPhjBk7kSqNgHNNx5O+HC8m XJdFatkxolkrN6A2FoHdP05sAXCv+uHbAGGGitYziRaXG7GBzm7Vc2LspJIml+y2 898+MiTH1M3P0WPyDa3cfcnRc2BBuJg56emad4CcfduM9sVXI0Ol6slNAYljnSYD 5A0CUxbrLxGUZaf6DAUJ9w5L+LhgEkXzKWEE9Nif46K4I1CFSt/d8nwB6Q5Oc/ie GZwTICRkMwTeqOM/CTyvwJCCwZm47AVv3qwaI0z5oDplH/bbRmNEi5WFJsgcgOnd GS5kmzjFBsljjDVWswgugdm7sdMSl7y88uQK9zUiG8fXgRiVUW/rENfZ1SMmVl1p zBQDndZmtrHm5ybe/NAZ8vaJhk4i1F3rWT0hwRZZKGDIrd/C3egnNyYkc4XeTPGe 3il+dJleIIwOX5Fpa44XTV1rDuVOXpF5LS5NRLjhhd+XqbaXZFI= =HLtu -----END PGP SIGNATURE----- Merge tag 'iommu-updates-v5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: - ATS support for ARM-SMMU-v3. - AUX domain support in the IOMMU-API and the Intel VT-d driver. This adds support for multiple DMA address spaces per (PCI-)device. The use-case is to multiplex devices between host and KVM guests in a more flexible way than supported by SR-IOV. - the rest are smaller cleanups and fixes, two of which needed to be reverted after testing in linux-next. * tag 'iommu-updates-v5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (45 commits) Revert "iommu/amd: Flush not present cache in iommu_map_page" Revert "iommu/amd: Remove the leftover of bypass support" iommu/vt-d: Fix leak in intel_pasid_alloc_table on error path iommu/vt-d: Make kernel parameter igfx_off work with vIOMMU iommu/vt-d: Set intel_iommu_gfx_mapped correctly iommu/amd: Flush not present cache in iommu_map_page iommu/vt-d: Cleanup: no spaces at the start of a line iommu/vt-d: Don't request page request irq under dmar_global_lock iommu/vt-d: Use struct_size() helper iommu/mediatek: Fix leaked of_node references iommu/amd: Remove amd_iommu_pd_list iommu/arm-smmu: Log CBFRSYNRA register on context fault iommu/arm-smmu-v3: Don't disable SMMU in kdump kernel iommu/arm-smmu-v3: Disable tagged pointers iommu/arm-smmu-v3: Add support for PCI ATS iommu/arm-smmu-v3: Link domains and devices iommu/arm-smmu-v3: Add a master->domain pointer iommu/arm-smmu-v3: Store SteamIDs in master iommu/arm-smmu-v3: Rename arm_smmu_master_data to arm_smmu_master ACPI/IORT: Check ATS capability in root complex nodes ... |
||
Linus Torvalds
|
55472bae53 |
linux-watchdog 5.2-rc1 tag
-----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) iEYEABECAAYFAlzZRp0ACgkQ+iyteGJfRsq1WQCfaR8jQjujN1bGWghnSWbTr01X O3cAn3RmJWiEtI0zmmMcRQBna8nj4cHJ =PuHw -----END PGP SIGNATURE----- Merge tag 'linux-watchdog-5.2-rc1' of git://www.linux-watchdog.org/linux-watchdog Pull watchdog updates from Wim Van Sebroeck: - a new watchdog driver for the ROHM BD70528 watchdog block - a new watchdog driver for the i.MX system controller watchdog - conversions to use device managed functions and other improvements - refactor watchdog_init_timeout - make watchdog core configurable as module - pretimeout governors improvements - a lot of other fixes * tag 'linux-watchdog-5.2-rc1' of git://www.linux-watchdog.org/linux-watchdog: (114 commits) watchdog: Enforce that at least one pretimeout governor is enabled watchdog: stm32: add dynamic prescaler support watchdog: Improve Kconfig entry ordering and dependencies watchdog: npcm: Enable modular builds watchdog: Make watchdog core configurable as module watchdog: Move pretimeout governor configuration up watchdog: Use depends instead of select for pretimeout governors watchdog: rtd119x: drop unused module.h include watchdog: intel_scu: make it explicitly non-modular watchdog: coh901327: make it explicitly non-modular watchdog: ziirave_wdt: drop warning after calling watchdog_init_timeout watchdog: xen_wdt: drop warning after calling watchdog_init_timeout watchdog: stm32_iwdg: drop warning after calling watchdog_init_timeout watchdog: st_lpc_wdt: drop warning after calling watchdog_init_timeout watchdog: sp5100_tco: drop warning after calling watchdog_init_timeout watchdog: renesas_wdt: drop warning after calling watchdog_init_timeout watchdog: nic7018_wdt: drop warning after calling watchdog_init_timeout watchdog: ni903x_wdt: drop warning after calling watchdog_init_timeout watchdog: imx_sc_wdt: drop warning after calling watchdog_init_timeout watchdog: i6300esb: drop warning after calling watchdog_init_timeout ... |
||
Linus Torvalds
|
d7a02fa0a8 |
This pull request contains the following changes for UBI/UBIFS
- fscrypt framework usage updates - One huge fix for xattr unlink - Cleanup of fscrypt ifdefs - Fix for our new UBIFS auth feature -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAlzYkIgWHHJpY2hhcmRA c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wTRrD/99iBd4f8F0jF1wmB8/9kDAnz5s KaK+VtC0RVRijRijYzo+/2kDXpXEbmPycg6AVl5EfKxXCVFw1K7pQvuBX43qyv4o BINRv1av8FEBA9eTjvBgZJUrjB1AuvV37716/OeM2bnvuCsp1escnvTEh6S3VFYw oWDBgZJd+DE10CYtZjuLoyDPcYdNrzebbmu3Xbfl2XsPwZFUJIrymMd6NE8Xdk3I EQbZ3guEM5Djui+nrko3iKzfoZ4eK7WguO3DOEjUHpwea4ZfnZtnlH345aYOAqRE N5qrDCzXOsWs6Zs+clODMQgg+aTN3kGBNV534culcpMAbUp7WXynUQ1DDqtOJNJO pGFjhAfGi4E6YgB3UwqxMbXxI4Tg/X2ckc77hWZlC7h/1Y/i89nacT6Ij5rPNOn1 mby1mFxWHI04uSEICWyocFK4m/J2b17Tmte2Mc5ZOigQqREUB7J8wiT4NWm6GhV1 nTb5DA8MepC3zopbsL/iAiKPhSkH1h6AkabBw1ADTksacgNUfhjzALkxqa64tIqv C43QG3n/HqsNZJ4aLdizLLb8KIt4pWsIaqHOeDGSfr3I1GEBrpfKiR72P/h3fSF9 9GIFJU5HiV+3zeAC2024muaV7KjcimZ6t/hPFTCFH9pMGNk2Mtn/gZFfmqnjLKbj TDxUTrZF9Lujonrbwg== =ymCJ -----END PGP SIGNATURE----- Merge tag 'upstream-5.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/rw/ubifs Pull UBI/UBIFS updates from Richard Weinberger: - fscrypt framework usage updates - One huge fix for xattr unlink - Cleanup of fscrypt ifdefs - Fix for our new UBIFS auth feature * tag 'upstream-5.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/rw/ubifs: ubi: wl: Fix uninitialized variable ubifs: Drop unnecessary setting of zbr->znode ubifs: Remove ifdefs around CONFIG_UBIFS_ATIME_SUPPORT ubifs: Remove #ifdef around CONFIG_FS_ENCRYPTION ubifs: Limit number of xattrs per inode ubifs: orphan: Handle xattrs like files ubifs: journal: Handle xattrs like files ubifs: find.c: replace swap function with built-in one ubifs: Do not skip hash checking in data nodes ubifs: work around high stack usage with clang ubifs: remove unused function __ubifs_shash_final ubifs: remove unnecessary #ifdef around fscrypt_ioctl_get_policy() ubifs: remove unnecessary calls to set up directory key |
||
Linus Torvalds
|
4dbf09fea6 |
This pull request contains the following changes for MTD:
MTD core changes: - New AFS partition parser - Update MAINTAINERS entry - Use of fall-throughs markers NAND core changes: - Support having the bad block markers in either the first, second or last page of a block. The combination of all three location is now possible. - Constification of NAND_OP_PARSER(_PATTERN) elements. - Generic NAND DT bindings changed to yaml format (can be used to check the proposed bindings. First platform to be fully supported: sunxi. - Stopped using several legacy hooks. - Preparation to use the generic NAND layer with the addition of several helpers and the removal of the struct nand_chip from generic functions. - Kconfig cleanup to prepare the introduction of external ECC engines support. - Fallthrough comments. - Introduction of the SPI-mem dirmap API for SPI-NAND devices. Raw NAND controller drivers changes: - nandsim: * Switch to ->exec-op(). - meson: * Misc cleanups and fixes. * New OOB layout. - Sunxi: * A23/A33 NAND DMA support. - Ingenic: * Full reorganization and cleanup. * Clear separation between NAND controller and ECC engine. * Support JZ4740 an JZ4725B. - Denali: * Clear controller/chip separation. * ->exec_op() migration. * Various cleanups. - fsl_elbc: * Enable software ECC support. - Atmel: * Sam9x60 support. - GPMI: * Introduce the GPMI_IS_MXS() macro. - Various trivial/spelling/coding style fixes. SPI NOR core changes: - Print all JEDEC ID bytes on error - Fix comment of spi_nor_find_best_erase_type() - Add region locking flags for s25fl512s SPI NOR controller drivers changes: - intel-spi: * Avoid crossing 4K address boundary on read/write * Add support for Intel Comet Lake SPI serial flash -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAlzYiU4WHHJpY2hhcmRA c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wX1HEACay8s/mUEWcLO3JKWy6KiC3756 1CGB3p5b621kKP6ooPWvV7UAv1Q2IKkLIwKaLE5W5FuKW9bVnN6H/yejVT8vYPK9 /5AbcqbdNKfrnYBnfv3SHH8jSYo6HjwwNsF7OcR/yiXvk/JUFX+VJQdR01HEzz+Z TWzkm4n5+vat5pJSGBs7JwRBlatuiCHul7Lz2dZYkF/ZdGIQgL5ftOr1goLsr88+ Hxn7Wmp3eBVZbQMf83BD7wf/Nv+oycToKBqklMZqMBEgK5mT6WDkT65HG4XMfzMz 0CcPReMHlTZVqJHHZFgTSXVPJJHu8Nl4qmJIAaf1hnmvx7yFW6LD0C1zKpu6uwRm +qVpe/fTDArLCEwLouLND6Y9MC7kkERkDE3jwcwSQ/PZcE3kdHKwIhmJ/19utI8k zk9pWGAWvtuoY1b+dNFxT4YcUxrHOWSxYcUZHcZvQHQr7Bvxskg92P1fOU0wlgC/ tXRtXUNCB5YsUU5x8Ph6+786dsCMcwCDoQQzwegecrbc6sK7n3KSYAcoNfv5ATwI C+Myoawul/XsxQvUyYbDIr8T4Yyda1BLs92XHxg1Di3kTC2m0OZL8sWJboQ7I/CI GkiJm5hFvzwniE+yrqE4n4jnCkoP5Y4kRtX70VDK3pIVDZFPs93lgYaYTFcfp93G scfn1MoI/bE7jDzpbA== =HXap -----END PGP SIGNATURE----- Merge tag 'mtd/for-5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mtd/linux Pull MTD updates from Richard Weinberger: "MTD core changes: - New AFS partition parser - Update MAINTAINERS entry - Use of fall-throughs markers NAND core changes: - Support having the bad block markers in either the first, second or last page of a block. The combination of all three location is now possible. - Constification of NAND_OP_PARSER(_PATTERN) elements. - Generic NAND DT bindings changed to yaml format (can be used to check the proposed bindings. First platform to be fully supported: sunxi. - Stopped using several legacy hooks. - Preparation to use the generic NAND layer with the addition of several helpers and the removal of the struct nand_chip from generic functions. - Kconfig cleanup to prepare the introduction of external ECC engines support. - Fallthrough comments. - Introduction of the SPI-mem dirmap API for SPI-NAND devices. Raw NAND controller drivers changes: - nandsim: - Switch to ->exec-op(). - meson: - Misc cleanups and fixes. - New OOB layout. - Sunxi: - A23/A33 NAND DMA support. - Ingenic: - Full reorganization and cleanup. - Clear separation between NAND controller and ECC engine. - Support JZ4740 an JZ4725B. - Denali: - Clear controller/chip separation. - ->exec_op() migration. - Various cleanups. - fsl_elbc: - Enable software ECC support. - Atmel: - Sam9x60 support. - GPMI: - Introduce the GPMI_IS_MXS() macro. - Various trivial/spelling/coding style fixes. SPI NOR core changes: - Print all JEDEC ID bytes on error - Fix comment of spi_nor_find_best_erase_type() - Add region locking flags for s25fl512s SPI NOR controller drivers changes: - intel-spi: - Avoid crossing 4K address boundary on read/write - Add support for Intel Comet Lake SPI serial flash" * tag 'mtd/for-5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (120 commits) mtd: part: fix incorrect format specifier for an unsigned long long mtd: lpddr_cmds: Mark expected switch fall-through mtd: phram: Mark expected switch fall-throughs mtd: cfi_cmdset_0002: Mark expected switch fall-throughs mtd: cfi_util: mark expected switch fall-throughs MAINTAINERS: MTD Git repository is hosted on kernel.org MAINTAINERS: Update jffs2 entry mtd: afs: add v2 partition parsing mtd: afs: factor the IIS read into partition parser mtd: afs: factor footer parsing into the v1 part parsing mtd: factor out v1 partition parsing mtd: afs: simplify partition detection mtd: afs: simplify partition parsing mtd: partitions: Add OF support to AFS partitions mtd: partitions: Add AFS partitions DT bindings mtd: afs: Move AFS partition parser to parsers subdir mtd: maps: Make uclinux_ram_map static mtd: maps: Allow MTD_PHYSMAP with MTD_RAM MAINTAINERS: Add myself as MTD maintainer MAINTAINERS: Remove my name from the MTD and NAND entries ... |
||
Linus Torvalds
|
983dfa4b6e |
This pull request contains the following changes for UML:
- Kconfig cleanups - Fix cpu_all_mask() usage - Various bug fixes -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAlzYi30WHHJpY2hhcmRA c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wdDcD/wLx0xljjSb+j08VVSvVWGah1Vl DMVyLp1Eik8KRnc6vR+IfC6qDE2+QmJvcLLx4IQ8wpgce+mvhLSy0+8SNsU9tz7t 7ZYVR++L3If3dx72J1aJquQt4PNLQn7QAdPWOA/FiYy4mqjxZUg4HVwf/Oge/2Un jfom649xl1gdcYlXTCOadb4Xmqo1BSEW+Ms1zqrQlBpU6ePMvojPkjBMdaCbCjMg bLt4XjtVbgBH3FnH0ZvuDzrMW229LiLot4KF0iUW36/gV/ZRATbinst5AQ5mUsMP GgrqbeU+wDdzt73p/l1NG7u3DZHOhoAW1ZWTqwBMKiazQiJPa90V9TIOwbnSl7zc hBEKKkU/u6p5E5TADcTty9ZJfCM+3Zatqt004WSbi+ug363G08XrTb3wWz6AruQ/ 9shTUmzwYsK1Bzllf2T2WShBrN+vMdmpzf4+v66N1KhcPrb7Eh81N/VhQG+rvfSb Ju/lDhu6OxlHr9OlGinI0SCLgjpk3qWcNd1noFdQsTewIopQsOL6H4R7711md3ow PWl7HAspvCRD3ub12y0wS3bb/4AUyoBrMDT/VBfk2vH0BbCzlR/ckaKE+lk2Y2Mr BpURt1zcqnpqi5LqRC//dhCFPyzpXd+yYVy1P6bN8q5lvfuIoaRdl2YeWjMfoo0v r+loEdGNa57Qj67ncg== =HB9o -----END PGP SIGNATURE----- Merge tag 'for-linus-5.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML updates from Richard Weinberger: - Kconfig cleanups - Fix cpu_all_mask() usage - Various bug fixes * tag 'for-linus-5.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: irq: don't set the chip for all irqs um: define set_pte_at() as a static inline function, not a macro um: remove uses of variable length arrays um: remove unused variable uml: fix a boot splat wrt use of cpu_all_mask um: Do not unlock mutex that is not hold. hostfs: fix mismatch between link_file definition and declaration arch: um: drivers: Kconfig: pedantic formatting arch: um: Kconfig: pedantic indention cleanups um: Revert to using stack for pt_regs in signal handling |
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Linus Torvalds
|
47782361ac |
chrome platform changes for v5.2
CrOS EC: - Add EC host command support using rpmsg - Add new CrOS USB PD logging driver - Transfer spi messages at high priority - Add support to trace CrOS EC commands - Minor fixes and cleanups in protocol and debugfs Wilco EC: - Standardize Wilco EC mailbox interface - Add h1_gpio status to debugfs -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE6gYDF28Li+nEiKLaHwn1ewov5lgFAlzV61YACgkQHwn1ewov 5lgEFw//S7GVmBrFxcqu5wAjF1CW+mOGi3y6nVuTAHanWG/hJGWT+itOwsdDp6c9 TggYgohprz64JAZOPqPCTonV/qbxgsfKrSQRxFDtHH4F1iEUF46fnlsULDKi8VwM Qzj4g4d//ePsOwHOsYVrbJRU2qKyF6Rm2hpOxKfI9u2Dv5fxLFu6fxUhrSq1Inr6 U67j7pxBwOnBtN2A6hMKHZaOUVkSNYT6azSPO3Z2YH0aky2Baxw/LPoRnbCNhwUQ iyneX5+K0wpCz2fpnBF/QSh1QBACeyfrO6HHA+flfaejhShaWttrS36Gar+sdHFN p6eeR1CoEJZbRY79Eetj8Cv5Be1ivVG/SC5JF4O1apAAn87wXLI6AaLG/03ul0vc KOkcjrXMxISRlAUr+OKD0rg3Uo2oI0ht70XMT9DDsCRNDoVHvkDQJNdkWrKq+E1c xL4YeLofZpcEN+Oe/WnwUZtYUdY3qcWs+C4hV+h0L0Ke5xir25DEUfF3j3J/uK2B JEgkTpH8j6YjbGAErBPkTxWt5HE3oWtkK4moPlrfPKfxoSo2eRDvqz68qHsgIn8p WBM+FSr+dQ7qyYDigMKrFSesiBpwCBI4lIgPxkvTxqbubaoZcsABHm3BUGjykXII E5z2qsgRnDrB+uGGDkTvDoR0Kr3U0hGlag7u/N61H86PoiMLUig= =NF5N -----END PGP SIGNATURE----- Merge tag 'tag-chrome-platform-for-v5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux Pull chrome platform updates from Benson Leung: "CrOS EC: - Add EC host command support using rpmsg - Add new CrOS USB PD logging driver - Transfer spi messages at high priority - Add support to trace CrOS EC commands - Minor fixes and cleanups in protocol and debugfs Wilco EC: - Standardize Wilco EC mailbox interface - Add h1_gpio status to debugfs" * tag 'tag-chrome-platform-for-v5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: platform/chrome: cros_ec_proto: Add trace event to trace EC commands platform/chrome: cros_ec_debugfs: Use cros_ec_cmd_xfer_status helper platform/chrome: cros_ec: Add EC host command support using rpmsg platform/chrome: wilco_ec: Add h1_gpio status to debugfs platform/chrome: wilco_ec: Standardize mailbox interface platform/chrome: cros_ec_proto: check for NULL transfer function platform/chrome: Add CrOS USB PD logging driver platform/chrome: cros_ec_spi: Transfer messages at high priority platform/chrome: cros_ec_debugfs: no need to check return value of debugfs_create functions platform/chrome: cros_ec_debugfs: Remove dev_warn when console log is not supported |
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Linus Torvalds
|
8148c17b17 |
This is the bulk of the GPIO changes for the v5.2 kernel cycle:
Core changes: - The gpiolib MMIO driver has been enhanced to handle two direction registers, i.e. one register to set lines as input and one register to set lines as output. It turns out some silicon engineer thinks the ability to configure a line as input and output at the same time makes sense, this can be debated but includes a lot of analog electronics reasoning, and the registers are there and need to be handled consistently. Unsurprisingly, we enforce the lines to be either inputs or outputs in such schemes. - Send in the proper argument value to .set_config() dispatched to the pin control subsystem. Nobody used it before, now someone does, so fix it to work as expected. - The ACPI gpiolib portions can now handle pin bias setting (pull up or pull down). This has been in the ACPI spec for years and we finally have it properly integrated with Linux GPIOs. It was based on an observation from Andy Schevchenko that Thomas Petazzoni's changes to the core for biasing the PCA950x GPIO expander actually happen to fit hand-in-glove with what the ACPI core needed. Such nice synergies happen sometimes. New drivers: - A new driver for the Mellanox BlueField GPIO controller. This is using 64bit MMIO registers and can configure lines as inputs and outputs at the same time and after improving the MMIO library we handle it just fine. Interesting. - A new IXP4xx proper gpiochip driver with hierarchical interrupts should be coming in from the ARM SoC tree as well. Driver enhancements: - The PCA053x driver handles the CAT9554 GPIO expander. - The PCA053x driver handles the NXP PCAL6416 GPIO expander. - Wake-up support on PCA053x GPIO lines. - OMAP now does a nice asynchronous IRQ handling on wake-ups by letting everything wake up on edges, and this makes runtime PM work as expected too. Misc: - Several cleanups such as devres fixes. - Get rid of some languager comstructs that cause problems when compiling with LLVMs clang. - Documentation review and update. -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJc1olZAAoJEEEQszewGV1zEU4P/RmTf3hG8xmNPS3MDTmR6gAy /YJOXjXBf3CD/dmEAyyaNLnUQismrtRNvHSoEGbno7gkU+htzp9UfUJkj6+HIXs2 RpF+Hi78HzZNDxGWuBLu6OZolpmBtx+sRKOhHk/XfNS45qd1FgXWDuulzsYa9Xsr hYMXdtdv9wY/vcc68q1rtKAbzlu5ZNCa3Zj1iNOr/XQt3Nl2BW66hGLgjK4mOvgx fJy4rFXuDIMfDvo69U1Opz2b39sfE7XMhfZS/MOgg4yEV9zGRgDoI1tyMcTqGb8Q 8LQbp5dXkP+3dJQB8tgbu3Vk4WC1Rd/pmIli5sMgsk0HYQ6XegfT6HJKozSmwN9r 0s8jKlrocWZvdPo1aJwQgtRS56t2rFWcrcRye8bLqxkkW5cYIq9CwkE8USwB31Kv PFpoOwRuCtj0gkCxf7WIEcC5NAkYPow3K1KPdk3E0Si6I3pj0NqqlaAD0JAlkC2V aPq3xbTuFCAdmcADEt2Z+dUJ7WIs5Y9oQgosMAx+A2AD4K3QDBMu3pZsT6SCu4XZ mK0eWJi9/CvOj/s7bA0BEJVxQA+p8KYsNRBOULg/8aAOqGcLnSydQjqrxDTE8YrL xmmRG7i7ht0B9CchZuIB5hqdvjbCgvcVa5OnCUDfLxE0GdCx8iJ9y9OrsMXbabYq 8FcPDo1N38cTYLnLqvKI =rhto -----END PGP SIGNATURE----- Merge tag 'gpio-v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull gpio updates from Linus Walleij: "This is the bulk of the GPIO changes for the v5.2 kernel cycle. A bit later than usual because I was ironing out my own mistakes. I'm holding some stuff back for the next kernel as a result, and this should be a healthy and well tested batch. Core changes: - The gpiolib MMIO driver has been enhanced to handle two direction registers, i.e. one register to set lines as input and one register to set lines as output. It turns out some silicon engineer thinks the ability to configure a line as input and output at the same time makes sense, this can be debated but includes a lot of analog electronics reasoning, and the registers are there and need to be handled consistently. Unsurprisingly, we enforce the lines to be either inputs or outputs in such schemes. - Send in the proper argument value to .set_config() dispatched to the pin control subsystem. Nobody used it before, now someone does, so fix it to work as expected. - The ACPI gpiolib portions can now handle pin bias setting (pull up or pull down). This has been in the ACPI spec for years and we finally have it properly integrated with Linux GPIOs. It was based on an observation from Andy Schevchenko that Thomas Petazzoni's changes to the core for biasing the PCA950x GPIO expander actually happen to fit hand-in-glove with what the ACPI core needed. Such nice synergies happen sometimes. New drivers: - A new driver for the Mellanox BlueField GPIO controller. This is using 64bit MMIO registers and can configure lines as inputs and outputs at the same time and after improving the MMIO library we handle it just fine. Interesting. - A new IXP4xx proper gpiochip driver with hierarchical interrupts should be coming in from the ARM SoC tree as well. Driver enhancements: - The PCA053x driver handles the CAT9554 GPIO expander. - The PCA053x driver handles the NXP PCAL6416 GPIO expander. - Wake-up support on PCA053x GPIO lines. - OMAP now does a nice asynchronous IRQ handling on wake-ups by letting everything wake up on edges, and this makes runtime PM work as expected too. Misc: - Several cleanups such as devres fixes. - Get rid of some languager comstructs that cause problems when compiling with LLVMs clang. - Documentation review and update" * tag 'gpio-v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (85 commits) gpio: Update documentation docs: gpio: convert docs to ReST and rename to *.rst gpio: sch: Remove write-only core_base gpio: pxa: Make two symbols static gpiolib: acpi: Respect pin bias setting gpiolib: acpi: Add acpi_gpio_update_gpiod_lookup_flags() helper gpiolib: acpi: Set pin value, based on bias, more accurately gpiolib: acpi: Change type of dflags gpiolib: Introduce GPIO_LOOKUP_FLAGS_DEFAULT gpiolib: Make use of enum gpio_lookup_flags consistent gpiolib: Indent entry values of enum gpio_lookup_flags gpio: pca953x: add support for pca6416 dt-bindings: gpio: pca953x: document the nxp,pca6416 gpio: pca953x: add pcal6416 to the of_device_id table gpio: gpio-omap: Remove conditional pm_runtime handling for GPIO interrupts gpio: gpio-omap: configure edge detection for level IRQs for idle wakeup tracing: stop making gpio tracing configurable gpio: pca953x: Configure wake-up path when wake-up is enabled gpio: of: Optimize quirk checks gpio: mmio: Drop bgpio_dir_inverted ... |
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Linus Torvalds
|
6fe567df04 |
VFIO updates for v5.2-rc1
- Improve dev_printk() usage (Bjorn Helgaas) - Fix issue with blocking in !TASK_RUNNING state while waiting for userspace to release devices (Farhan Ali) - Fix error path cleanup in nvlink setup (Greg Kurz) - mdev-core cleanups and fixes in preparation for more use cases (Parav Pandit) - Cornelia has volunteered as an official vfio reviewer (Cornelia Huck) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) iQIcBAABAgAGBQJc1e9mAAoJECObm247sIsiB+sP/Rs94smfIyO/N3a73gd3KrAV wmnNGLbUGEEoumUmzWYjSq/l3zfehYpe2kiKJklH8sUPP+kGL0eQj2H5++/LWC3E EMMPGVoD0wHHoWwdVKY79xjDIUUeNZe2IFVUjLgwJ9UD79DBBGJUMpWQhbuUDkl1 nGCb0ltzu6H+OzELLZxXSC7QdhnB97mRaamSI2sunTM7tr6QaL13YsrFES4mpj23 vIGElbdpyPBeMMbh2rhhb581RDXEv5GCy6SKfBpHOMay4rpr37YX8CJ/7uh4rNcn DF3aikkK2NpVv5Rk1+AJvvri+MDmOF9TMC5EG24swEAqJrr4jYyWXvPb/WKNDm2w Z0qxBHkZLPJ9kARMQxuAAqJ5vKDwy/FgRjoZi0aEsOjJO+HYeCdIKkueFXdWXw2O pL5IdZr5VSejYdVxjV2Ft6y90dQjxIAdDd6QJDnuEAu2JEb2T1q9iea/QOMnEJyD QM3h1mx/rNZnkmEVgpE4t9TGnoPMmg/grzcfu+8wQZk8ys1uqSfBSdgWoBgheQ9z XJDHCvkRG7bc/VTVcet+HPBvK38Kdv0Er+8eHNmG4c11ifgODzShbXl5oKgDE3iC WJi/ilYVn2dleo/4ZqiCP+U/PEVgED4k4pvj0vWhaE7CfGJDC60Te2/q+aB4sTMI 4EChWOml/T545Hzv6swn =JSGI -----END PGP SIGNATURE----- Merge tag 'vfio-v5.2-rc1' of git://github.com/awilliam/linux-vfio Pull VFIO updates from Alex Williamson: - Improve dev_printk() usage (Bjorn Helgaas) - Fix issue with blocking in !TASK_RUNNING state while waiting for userspace to release devices (Farhan Ali) - Fix error path cleanup in nvlink setup (Greg Kurz) - mdev-core cleanups and fixes in preparation for more use cases (Parav Pandit) - Cornelia has volunteered as an official vfio reviewer (Cornelia Huck) * tag 'vfio-v5.2-rc1' of git://github.com/awilliam/linux-vfio: vfio: Add Cornelia Huck as reviewer vfio/mdev: Avoid inline get and put parent helpers vfio/mdev: Fix aborting mdev child device removal if one fails vfio/mdev: Follow correct remove sequence vfio/mdev: Avoid masking error code to EBUSY vfio/mdev: Drop redundant extern for exported symbols vfio/mdev: Removed unused kref vfio/mdev: Avoid release parent reference during error path vfio-pci/nvlink2: Fix potential VMA leak vfio: Fix WARNING "do not call blocking ops when !TASK_RUNNING" vfio: Use dev_printk() when possible |
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Linus Torvalds
|
c367dc8d0d |
Merge branch 'next-tomoyo2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull tomoyo updates from James Morris: "Fixes to enable fuzz testing, and a fix for calculating whether a filesystem is user-modifiable" * 'next-tomoyo2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: tomoyo: Don't emit WARNING: string while fuzzing testing. tomoyo: Change pathname calculation for read-only filesystems. tomoyo: Check address length before reading address family tomoyo: Add a kernel config option for fuzzing testing. |
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Linus Torvalds
|
7a5575212c |
Xtensa updates for v5.2:
- implement atomic operations using exclusive access Xtensa option operations. - add support for Xtensa cores with memory protection unit (MPU). - clean up xtensa-specific kernel-only headers. - fix error path in simdisk_setup. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEK2eFS5jlMn3N6xfYUfnMkfg/oEQFAlzV0oQTHGpjbXZia2Jj QGdtYWlsLmNvbQAKCRBR+cyR+D+gRHTkD/sETyrWaYCSvz07gcvxsauJgkKyikq3 oNsO6H0R9WzIRtofP7eIPe1me46YDxPGJxx3VEnJA1JWvUg8CU1UNmvA3ZD4yXp2 tA1G8/0WFbiKXX+svNXlIkCtBHm2Y9wdT2l1zfFLnQgyuJhr9uwrIY0YmQYM+INe bAX9PyDg2aa2GkCkZMFvMeFrMHEAx+ae/A9jYqhnsmrYbfIV/4qdcKpgm0lty/fv RRNx+eqDamI5EMnXQwW86/1YxB+KItKGSEQ3t/20jBXcH1tZsXAvcs91kKH1/nCE cR8w21yBWCulPSuACqqrwtZ+aCxsQ22O4QMtlmJEl0jsWOdOk47JeyLwAqbGZS7g nk5FQH7/aGU250HOCLEX1IdA0VZsOeJRXfJknFcEyfKi8JuhXZK/zHyhNE3VkpH5 cfA1dVRFH4qmKevEWygBfNyo8rR9E/0aaNhTzMUHXrIU07fxh5CQk9trIlwtWWsS kEV3bEsTMXdz3e4ev5HLUuJzLlYQ7Szs1HsgB5XPUsCC4kwbjKZTN8BtqIpx7P9K lDVplXKlHOd2SJ9Ii5eJ0Zn9cBdUulqrQzHlSg6kWyrfQ/QrY8OFwCM8hUQIWGir MrpSWfafjIudjdxN3lHEM8Gv0LzNmjwWrh6QJYlE08Ggi7QXM/BiXkgBDaeRItbl xLB9UsUsTL8OLQ== =aszE -----END PGP SIGNATURE----- Merge tag 'xtensa-20190510' of git://github.com/jcmvbkbc/linux-xtensa Pull xtensa updates from Max Filippov: - implement atomic operations using exclusive access Xtensa option operations - add support for Xtensa cores with memory protection unit (MPU) - clean up xtensa-specific kernel-only headers - fix error path in simdisk_setup * tag 'xtensa-20190510' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: implement initialize_cacheattr for MPU cores xtensa: add exclusive atomics support xtensa: clean up inline assembly in futex.h xtensa: replace variant/core.h with asm/core.h xtensa: drop ifdef __KERNEL__ from kernel-only headers xtensa: set proper error code for simdisk_setup() xtensa: fix incorrect fd close in error case of simdisk_setup() |
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Tetsuo Handa
|
4ad98ac464 |
tomoyo: Don't emit WARNING: string while fuzzing testing.
Commit cff0e6c3ec3e6230 ("tomoyo: Add a kernel config option for fuzzing testing.") enabled the learning mode, but syzkaller is detecting any "WARNING:" string as a crash. Thus, disable TOMOYO's quota warning if built for fuzzing testing. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: James Morris <jamorris@linux.microsoft.com> |
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Tetsuo Handa
|
27df4b4a1b |
tomoyo: Change pathname calculation for read-only filesystems.
Commit
|
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Tetsuo Handa
|
e6193f78bb |
tomoyo: Check address length before reading address family
KMSAN will complain if valid address length passed to bind()/connect()/ sendmsg() is shorter than sizeof("struct sockaddr"->sa_family) bytes. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jamorris@linux.microsoft.com> |
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Tetsuo Handa
|
e80b18599a |
tomoyo: Add a kernel config option for fuzzing testing.
syzbot is reporting kernel panic triggered by memory allocation fault injection before loading TOMOYO's policy [1]. To make the fuzzing tests useful, we need to assign a profile other than "disabled" (no-op) mode. Therefore, let's allow syzbot to load TOMOYO's built-in policy for "learning" mode using a kernel config option. This option must not be enabled for kernels built for production system, for this option also disables domain/program checks when modifying policy configuration via /sys/kernel/security/tomoyo/ interface. [1] https://syzkaller.appspot.com/bug?extid=29569ed06425fcf67a95 Reported-by: syzbot <syzbot+e1b8084e532b6ee7afab@syzkaller.appspotmail.com> Reported-by: syzbot <syzbot+29569ed06425fcf67a95@syzkaller.appspotmail.com> Reported-by: syzbot <syzbot+2ee3f8974c2e7dc69feb@syzkaller.appspotmail.com> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jamorris@linux.microsoft.com> |
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Linus Torvalds
|
1fb3b526df |
Some late arriving documentation changes. In particular, this contains the
conversion of the x86 docs to RST, which has been in the works for some time but needed a couple of final tweaks. -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAlzVlVoPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5YPWgH/1z+HO4QiLZ72kVxLf2U5r6FAo4CtQYLymL/ GiDabC7Jt7hobXdFQmDXhFnLOR/ibMnawJw2JAgWXDo33KenKGbE2OiW8ecsebSb hd1F3pU6P3gVTYItcuM8dZ6/0C/F98/J/O3O3sOhZ0Uup2WPxW5XdNOp7LjFQScc ENkgm2C5trs1wGjVswXWztGxSTcYrF7ehhjpWsFr9MUnUOI6ghvXX1akN3cEo7eo 7D8nvG2/HWOkf9Oq87/1uQxF6lERRqOQE+HN1J80XUsNTV5Hn40RP40FeebVv1rr 1GjUu+mKk/5uV+OlRWFqLbt10cU4+TKKfNTqfEchHyDOMpJD+S0= =hfly -----END PGP SIGNATURE----- Merge tag 'docs-5.2a' of git://git.lwn.net/linux Pull more documentation updates from Jonathan Corbet: "Some late arriving documentation changes. In particular, this contains the conversion of the x86 docs to RST, which has been in the works for some time but needed a couple of final tweaks" * tag 'docs-5.2a' of git://git.lwn.net/linux: (29 commits) Documentation: x86: convert x86_64/machinecheck to reST Documentation: x86: convert x86_64/cpu-hotplug-spec to reST Documentation: x86: convert x86_64/fake-numa-for-cpusets to reST Documentation: x86: convert x86_64/5level-paging.txt to reST Documentation: x86: convert x86_64/mm.txt to reST Documentation: x86: convert x86_64/uefi.txt to reST Documentation: x86: convert x86_64/boot-options.txt to reST Documentation: x86: convert i386/IO-APIC.txt to reST Documentation: x86: convert usb-legacy-support.txt to reST Documentation: x86: convert orc-unwinder.txt to reST Documentation: x86: convert resctrl_ui.txt to reST Documentation: x86: convert microcode.txt to reST Documentation: x86: convert pti.txt to reST Documentation: x86: convert amd-memory-encryption.txt to reST Documentation: x86: convert intel_mpx.txt to reST Documentation: x86: convert protection-keys.txt to reST Documentation: x86: convert pat.txt to reST Documentation: x86: convert mtrr.txt to reST Documentation: x86: convert tlb.txt to reST Documentation: x86: convert zero-page.txt to reST ... |
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Linus Torvalds
|
e290e6af1d |
Printk fixup for 5.2
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAlzVjNEACgkQUqAMR0iA lPIq1xAAjgROavrbysfBGXtlAqeNCuwdg6KXA5JuIFKqp/6YdIByweaHomZvncTv b0yqh4L3oj8tJ47QCN3pUXMQo1XTkcrnJbd2fKtvJO96/gbHhYVv1u/+sg/AwEYd tIwjUMFTzHh9uHNVu3PtEYrg1dkBtvtpFvwRsMYbneErdImN4v1jwXC9A7sBnY0X 8BHXT3ioT6C5Bs4z6LYcapvSHm/ypBXrAgqn+wEqTU1IZCVRM6PqaGr8u385oA2Q 5Wp0Mgsrd2emxrGzXwnMnLY54MuVwcNWNXK3YM/ejFmz+1vAVTVu+daUe1lHAIUd SiludveFTokyrdKBZ55dCLEV5wtyQ5uF0BrKPehA+tlMJbwx7Q3Mlolcz6cxY73K QFMx0Ja2hnP3HELT2tMmZB9oNMQErHeRgbvj9gQqiLIdCQArs9o9jUE01AzOI3wz kCqcwMO4Rc49QpkUFVSY7kJ3afWZPhRsuGtUCqRU17tvEaW1G/gGzfNd4SSecNeX QZ8UCzkKth+CjCVd6hUhq4wzJ0aOGcZWG0N8+xXRbMFHkJLIrrTxgkey0+7x7Cx1 TxNO3E4slyk0Jr3kGyalZ63C6OlkoFksIfuisir3nULQEookODnG7tMRF5spPdEM X0tyESsEU0RnVV1gE2Y0Ebtu3eDj1Cw4WpN7YBosODqXgWKENHg= =lg6O -----END PGP SIGNATURE----- Merge tag 'printk-for-5.2-fixes' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/pmladek/printk Pull printk fixup from Petr Mladek: "Replace the problematic probe_kernel_read() with original simple pointer checks in vsprintf()" * tag 'printk-for-5.2-fixes' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: vsprintf: Do not break early boot with probing addresses |
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Linus Torvalds
|
3232b43f72 |
pidfd fixes for v5.2-rc1
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE7btrcuORLb1XUhEwjrBW1T7ssS0FAlzVbswACgkQjrBW1T7s sS0E1g/+KzVB7tvPFeTF3dE49ZuUygW/YD1tUpxRTr1C0Wm4W5FFRg9tg/SdGO1E uXAGpl3qy4kcpG66MdVJHEdsG4ffSHzz/jrLMl3cktrnnO0nSG5kjl2Bg0AoF2GK Y7qiwmxQ9/20WeU5lK/tZKdHdGtv8Fo0a8119Ol0OEi0qZ2VUEXz0qM5Bh7GR3UW Y/mTuRnhQgGbjTArTms06WgCd6/tuyEffAXgeNbAmPCe6zuW5i2KsnDSdLbb59r5 SR8La0rfGcgs8k2waKR68sw8dMdEN2Za/8MoY4GRKa226dQUtr0NooJW913R2Kc1 y4dlgk8cZC3kAZnlBDZChkIKwOCnR6ha5UYsm3ksDEja9mS7vOhwpW3yThFRCGnY caHwrO/o/T393ENOBz8Nbbjq7B+TRc8nq+Wm5xm+ZeTKMhuEvXV2d1Gi32tlyuMl +TI4BKi0V2hA/L71imQy/0A0E3obU6ctxFThWGCF//mSp3QwjF1yNsR9eV9wCp3d MBL0Rv5zxrqkjklUq8TSJEXNLbMj12pvd4pKiSymhJuJO2PCoZ+RMZvPVGj+/Iku atQE/0kE1yUEYFGgoMTLsGyGPMG3CSPNhO63Q/8U/MO/YqSge5ql4tMP8iiT5jOi vdQ807OKwdg4M3A1IIUBbYZbIuY/g7n/065tnKR+7nxR1OLqB/E= =0qDn -----END PGP SIGNATURE----- Merge tag 'pidfd-fixes-v5.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux Pull pidfd fixes from Christian Brauner: "This fixes two bugs: - The first one reported by Linus whereby the pidfd-metadata binary was not placed in a .gitignore file. - The second one is rather urgent and fixes a locking issue found by syzkaller. What happened is that during process creation we need to check whether the cgroup we are in allows us to fork. To perform this check the cgroup needs to guard itself against threadgroup changes and takes a lock. Prior to CLONE_PIDFD the cleanup target "bad_fork_free_pid" would also need to release said lock. That's not true anymore since CLONE_PIDFD so this is fixed here. Syzkaller has tested the patch and was not able to reproduce the issue" * tag 'pidfd-fixes-v5.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux: fork: do not release lock that wasn't taken samples: add .gitignore for pidfd-metadata |
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Linus Torvalds
|
7817ffd20a |
platform-drivers-x86 for v5.2-1
New driver of power button for Basin Cove PMIC. ASUS WMI driver has got a Fn lock mode switch support. Resolve a never end story with non working Wi-Fi on newer Lenovo Ideapad computers. Now the black list is replaced with white list. New facility to debug S0ix failures on Intel Atom platforms. The Intel PMC and accompanying drivers are cleaned up. Mellanox got a new TmFifo driver. Besides tachometer sensor and watchdog are enabled on Mellanox platforms. The information of embedded controller is now recognized on new Thinkpads. Bluetooth driver on Thinkpads is blacklisted for some models. Touchscreen DMI driver extended to support 'jumper ezpad 6 pro b' and Myria MY8307 2-in-1. Additionally few small fixes here and there for WMI and ACPI laptop drivers. The following is an automated git shortlog grouped by driver: alienware-wmi: - printing the wrong error code - fix kfree on potentially uninitialized pointer asus-wmi: - Add fn-lock mode switch support dell-laptop: - fix rfkill functionality dell-rbtn: - Add missing #include ideapad-laptop: - Remove no_hw_rfkill_list intel_pmc_core: - Allow to dump debug registers on S0ix failure - Convert to a platform_driver - Mark local function static intel_pmc_ipc: - Don't map non-used optional resources - Apply same width for offset definitions - Use BIT() macro - adding error handling intel_punit_ipc: - Revert "Fix resource ioremap warning" mlx-platform: - Add mlx-wdt platform driver activation - Add support for tachometer speed register - Add TmFifo driver for Mellanox BlueField Soc sony-laptop: - Fix unintentional fall-through thinkpad_acpi: - cleanup for Thinkpad ACPI led - Mark expected switch fall-throughs - fix spelling mistake "capabilites" -> "capabilities" - Read EC information on newer models - Disable Bluetooth for some machines touchscreen_dmi: - Add info for 'jumper ezpad 6 pro b' touchscreen - Add info for Myria MY8307 2-in-1 -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEqaflIX74DDDzMJJtb7wzTHR8rCgFAlzVl80ACgkQb7wzTHR8 rCjhGQ/8CqTADSP1VDKUQqlJ0uqGTZbxcxNHxR3bGA/g7mGCjpQ6jbW3yWK8f2cO YJZl8j3PriaJwsO2JzhgVnVhyaL505nwSA2TCEgD7RciuQCvx8GKZemPmbd0FwUf /28McB5zpcvCWoZWaS4kdMCNKVSpY08VKekuchO6ofaqiikq2JgxKtXwsoRhx5hm AAX8e8+A18CJj7xpj3IdiVEujfbZy9Gjpakj3L9lOPsYwA4DLPoJ3YvjkmHmsZwd KsDcd8Er8oxa1LVg1fTnBMe7R3iDkiuNGiYOZpRqdGLynZw/NS5VSCCj+zcQZ4Ia W7mmksce8DGnSmgwVBOJd/Uo+qdcBmqCe6zkuePLeR5k0zu3yHzsFXcEfQiONm08 FtGUc3WOqyl4I4X4gcIOFRDWW6XTjVTENVc4kuX9BCFDyGiYr7z1YQzf2GNB8x1m FLfSC7cWZeHzSatWbIDd6l2TU7CptusRfsZdVBNaKwLHKgf2A5rogngOYCZud5oY yVxoeajFskXU0LgHRQU88t/jw+RehYKNZ6r8CRHp+toWotVcu6ZGEnDEpa0acSWL upyV1/tTexo7jsghNEwrSqa14l7K/3RC+1l8pjQCVV+ltUzkDqLQZoEovtmv9CEE b5TKAfoqlc3a6YEtJuvMfHwsq8x2rEQ3XiB+HogDljnnzN0Ojzc= =5b// -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v5.2-1' of git://git.infradead.org/linux-platform-drivers-x86 Pull x86 platform driver updates from Andy Shevchenko: "Gathered pile of patches for Platform Drivers x86. No surprises and no merge conflicts. Business as usual. Summary: - New driver of power button for Basin Cove PMIC. - ASUS WMI driver has got a Fn lock mode switch support. - Resolve a never end story with non working Wi-Fi on newer Lenovo Ideapad computers. Now the black list is replaced with white list. - New facility to debug S0ix failures on Intel Atom platforms. The Intel PMC and accompanying drivers are cleaned up. - Mellanox got a new TmFifo driver. Besides tachometer sensor and watchdog are enabled on Mellanox platforms. - The information of embedded controller is now recognized on new Thinkpads. Bluetooth driver on Thinkpads is blacklisted for some models. - Touchscreen DMI driver extended to support 'jumper ezpad 6 pro b' and Myria MY8307 2-in-1. - Additionally few small fixes here and there for WMI and ACPI laptop drivers. - The following is an automated git shortlog grouped by driver: - alienware-wmi: - printing the wrong error code - fix kfree on potentially uninitialized pointer - asus-wmi: - Add fn-lock mode switch support - dell-laptop: - fix rfkill functionality - dell-rbtn: - Add missing #include - ideapad-laptop: - Remove no_hw_rfkill_list - intel_pmc_core: - Allow to dump debug registers on S0ix failure - Convert to a platform_driver - Mark local function static - intel_pmc_ipc: - Don't map non-used optional resources - Apply same width for offset definitions - Use BIT() macro - adding error handling - intel_punit_ipc: - Revert "Fix resource ioremap warning" - mlx-platform: - Add mlx-wdt platform driver activation - Add support for tachometer speed register - Add TmFifo driver for Mellanox BlueField Soc - sony-laptop: - Fix unintentional fall-through - thinkpad_acpi: - cleanup for Thinkpad ACPI led - Mark expected switch fall-throughs - fix spelling mistake "capabilites" -> "capabilities" - Read EC information on newer models - Disable Bluetooth for some machines - touchscreen_dmi: - Add info for 'jumper ezpad 6 pro b' touchscreen - Add info for Myria MY8307 2-in-1" * tag 'platform-drivers-x86-v5.2-1' of git://git.infradead.org/linux-platform-drivers-x86: (26 commits) platform/x86: Add support for Basin Cove power button platform/x86: asus-wmi: Add fn-lock mode switch support platform/x86: ideapad-laptop: Remove no_hw_rfkill_list platform/x86: touchscreen_dmi: Add info for 'jumper ezpad 6 pro b' touchscreen platform/x86: thinkpad_acpi: cleanup for Thinkpad ACPI led platform/x86: thinkpad_acpi: Mark expected switch fall-throughs platform/x86: sony-laptop: Fix unintentional fall-through platform/x86: alienware-wmi: printing the wrong error code platform/x86: intel_pmc_core: Allow to dump debug registers on S0ix failure platform/x86: intel_pmc_core: Convert to a platform_driver platform/x86: mlx-platform: Add mlx-wdt platform driver activation platform/x86: mlx-platform: Add support for tachometer speed register platform/mellanox: Add TmFifo driver for Mellanox BlueField Soc platform/x86: thinkpad_acpi: fix spelling mistake "capabilites" -> "capabilities" platform/x86: intel_punit_ipc: Revert "Fix resource ioremap warning" platform/x86: intel_pmc_ipc: Don't map non-used optional resources platform/x86: intel_pmc_ipc: Apply same width for offset definitions platform/x86: intel_pmc_ipc: Use BIT() macro platform/x86: alienware-wmi: fix kfree on potentially uninitialized pointer platform/x86: dell-laptop: fix rfkill functionality ... |
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Linus Torvalds
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cccd559e98 |
fbdev changes for v5.2:
- fix regression in fbcon logo handling on 'quiet' boots (Andreas Schwab) - fix divide-by-zero error in fb_var_to_videomode() (Shile Zhang) - fix 'WARNING in __alloc_pages_nodemask' bug (Jiufei Xue) - list all PCI memory BARs as conflicting apertures (Gerd Hoffmann) - update udlfb driver - fix sleeping inside spinlock, add mutex around rendering calls and remove redundant code (Mikulas Patocka) - update sm712fb driver - fix SM720 support related issues (Yifeng Li) - update macfb driver - fix DAFB colour table pointer initialization and remove redundant code (Finn Thain) - update atafb driver - fix kexec support, use dev_*() calls instead of printk() and remove obsolete module support (Geert Uytterhoeven) - add support to mxsfb driver for skipping display initialization for flicker-free display takeover from bootloader (Melchior Franz) - remove Versatile and Nomadik board families support from amba-clcd driver as they are handled by DRM driver nowadays (Linus Walleij) - remove no longer needed AVR and platform_data support from atmel_lcdfb driver (Alexandre Belloni) - misc fixes (Colin Ian King, Julia Lawall, Gustavo A. R. Silva, Aditya Pakki, Kangjie Lu, YueHaibing) - misc cleanups (Enrico Weigelt, Kefeng Wang) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABCAAGBQJc1an3AAoJEH4ztj+gR8ILcQIP/13kwUO3SGG04F3MU7Tubfqn Qt31r7ZVLxON8O/sSGFpmb9p/tihtybLxtgjLleEVn34lypX2dTxRBi26dMbgEOa WZV0qdl/fsumyhCPq5BZLhCxr5+pW7AsZiB8mtIb9N/SkVyggri+fAyoUAeO2XAG WUtr1oqqwTiJIzpatekRpo9ln3rPkSCkHomjoXkL1pQ8EhUy8GEMjxw2RK1laKEl evOKUTvLNjXpVSHzaxKxuiq132oQvexj2Rci/iJ2UcFOZymhMsTXKBW26cqUQs3b SS3FeWCLtWzYn6wjGgT/e0AWwGupu74MiYepbUyv3otQYgiFEM114DYcp7f/X8CJ KiFBUnAUZpD7UR9+3uE0AyjWn+7yZoM0YsQ+jfoWS7oxGTymJ2fw8pLEhOgG7rkI 7TRCsnUfm9HAbeuaMftZhjPHfNb+G6SBq7I329ww/YyQSgNoykysoN3yYMCsyH1h 0GRmwrJmVMrbe2Ce95qUTHGAdDKcGnS1rvtZYUfP3L0LFxBy9aN0wrGmCgr3nlDZ 8p3Og1VzJBH3HXM/C/vNEYlAWY+rV0jB/eowjA9qaDv+2J2xKfP09yUGz4YaLyKn CuPIfrqEQie6Y8Yw6+8jyZWanyPvGSMZx98FxYvdVSVC+HdtfIdmHG3+cqI9Nvu4 4Lr8fYo7j+u8GNYDda3T =r7Ll -----END PGP SIGNATURE----- Merge tag 'fbdev-v5.2' of git://github.com/bzolnier/linux Pull fbdev updates from Bartlomiej Zolnierkiewicz: "Four small fixes for fb core, updates for udlfb, sm712fb, macfb and atafb drivers. Redundant code removals from amba-clcd and atmel_lcdfb drivers. Minor fixes/cleanups for other fb drivers Detailed summary: - fix regression in fbcon logo handling on 'quiet' boots (Andreas Schwab) - fix divide-by-zero error in fb_var_to_videomode() (Shile Zhang) - fix 'WARNING in __alloc_pages_nodemask' bug (Jiufei Xue) - list all PCI memory BARs as conflicting apertures (Gerd Hoffmann) - update udlfb driver: fix sleeping inside spinlock, add mutex around rendering calls and remove redundant code (Mikulas Patocka) - update sm712fb driver: fix SM720 support related issues (Yifeng Li) - update macfb driver: fix DAFB colour table pointer initialization and remove redundant code (Finn Thain) - update atafb driver: fix kexec support, use dev_*() calls instead of printk() and remove obsolete module support (Geert Uytterhoeven) - add support to mxsfb driver for skipping display initialization for flicker-free display takeover from bootloader (Melchior Franz) - remove Versatile and Nomadik board families support from amba-clcd driver as they are handled by DRM driver nowadays (Linus Walleij) - remove no longer needed AVR and platform_data support from atmel_lcdfb driver (Alexandre Belloni) - misc fixes (Colin Ian King, Julia Lawall, Gustavo A. R. Silva, Aditya Pakki, Kangjie Lu, YueHaibing) - misc cleanups (Enrico Weigelt, Kefeng Wang)" * tag 'fbdev-v5.2' of git://github.com/bzolnier/linux: (38 commits) video: fbdev: Use dev_get_drvdata() fbcon: Don't reset logo_shown when logo is currently shown video: fbdev: atmel_lcdfb: remove set but not used variable 'pdata' video: fbdev: mxsfb: remove set but not used variable 'line_count' video: fbdev: pvr2fb: remove set but not used variable 'size' fbdev: fix WARNING in __alloc_pages_nodemask bug video: amba-clcd: Decomission Versatile and Nomadik fbdev: sm712fb: fix memory frequency by avoiding a switch/case fallthrough fbdev: fix divide error in fb_var_to_videomode fbdev: sm712fb: use 1024x768 by default on non-MIPS, fix garbled display fbdev: sm712fb: fix support for 1024x768-16 mode fbdev: sm712fb: fix crashes and garbled display during DPMS modesetting fbdev: sm712fb: fix crashes during framebuffer writes by correctly mapping VRAM fbdev: sm712fb: fix boot screen glitch when sm712fb replaces VGA fbdev: sm712fb: fix VRAM detection, don't set SR70/71/74/75 fbdev: sm712fb: fix brightness control on reboot, don't set SR30 fbdev: sm712fb: fix white screen of death on reboot, don't set CR3B-CR3F video: imsttfb: fix potential NULL pointer dereferences video: hgafb: fix potential NULL pointer dereference fbdev: list all pci memory bars as conflicting apertures ... |
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Linus Torvalds
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cece6460c2 |
pwm: Changes for v5.2-rc1
Nothing out of the ordinary this cycle. The bulk of this is a collection of fixes for existing drivers and some cleanups. There's one new driver for i.MX SoCs and addition of support for some new variants to existing drivers. -----BEGIN PGP SIGNATURE----- iQJNBAABCAA3FiEEiOrDCAFJzPfAjcif3SOs138+s6EFAlzVW/MZHHRoaWVycnku cmVkaW5nQGdtYWlsLmNvbQAKCRDdI6zXfz6zoVgJEACIqcHeP5SrGv+Bh5xoAsNL HNLu72QOTVFYICBPSTqsS9QgGvkeZErv86dheYp6MSJHuRCGu/d4Vlp6iY8YmiS0 i3Vi9Ib8sGsbC2kKJSsLnAO7d1JrDkyxYS8sSGSR0G2xKZA1dgXVqtAEdOubUU0x /HrzpP8uSoSiKflEfGtU3OykAdY8b1UBtWuC+KxVP2z5A2IAJchYQcXQ3v+kVbvT Jp+mYbYfViwb40JKFkg67hm7y494LFAMZhInzv5ImQXl1ji+C2VPGfqBdlxwgW8g +OyP0Conh6oHlEB4Wc7xfWec0PYJee9hNlXR30L+a1OCTisnOq7aHHjf6+ej7NDq KeQPEt9r8URgRMbfPvL70TRk46QeToeC07BO7aEGK3gd2C2c6ZoFmyhhauM6j2z0 eL8xK7WnynKCUrQ0tgQhv8AZkZE/Hp2ddgicyu0ARECugRiqd/uVNeip3M3TkPmV Zv0nRZzhFUk+t0DNX6krEVzvkaFznzWGDK6PGeHHbNdR58GaRnYzM0WXytYqUNGa +kryN/sj0vgzVj+ATxvDfVYqAtZMYcXvZMJQhfjNAPP89F3lHrsONf6pvD++azOM 8HugNF01zR0uZ2Z/JXPL5mZxybYlCBQdmK6QxEB+YcmJizCcnOCsWoEi1XVOGyCC /alcvvLa2DceO1lJIo0o7g== =3p6h -----END PGP SIGNATURE----- Merge tag 'pwm/for-5.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "Nothing out of the ordinary this cycle. The bulk of this is a collection of fixes for existing drivers and some cleanups. There's one new driver for i.MX SoCs and addition of support for some new variants to existing drivers" * tag 'pwm/for-5.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: pwm: meson: Add clock source configuration for Meson G12A dt-bindings: pwm: Update bindings for the Meson G12A Family pwm: samsung: Don't uses devm_*() functions in ->request() pwm: Clear chip_data in pwm_put() pwm: Add i.MX TPM PWM driver support dt-bindings: pwm: Add i.MX TPM PWM binding pwm: imx27: Use devm_platform_ioremap_resource() to simplify code pwm: meson: Use the spin-lock only to protect register modifications pwm: meson: Don't disable PWM when setting duty repeatedly pwm: meson: Consider 128 a valid pre-divider pwm: sysfs: fix typo "its" -> "it's" pwm: tiehrpwm: Enable compilation for ARCH_K3 dt-bindings: pwm: tiehrpwm: Add TI AM654 SoC specific compatible pwm: tiehrpwm: Update shadow register for disabling PWMs pwm: img: Turn final 'else if' into 'else' in img_pwm_config pwm: Fix deadlock warning when removing PWM device |
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Linus Torvalds
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15500c0a50 |
- New driver: Armada 37xx mailbox controller
- Misc: Use devm_ api for imx and platform_get_irq for stm32 -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE6EwehDt/SOnwFyTyf9lkf8eYP5UFAlzTv38ACgkQf9lkf8eY P5VOQQ//d2rKhGB1GjVZQlezRa+AOLWr69cbN4mcxUvXp+PJmrcnqn1Ld7QzPXCl /Xc/2+KxtZ5WX7vtmGu45eSFiCqf2apXfDaQf89ZrtCbUKT1GBJRUvvBeCmFv4pZ bnA0PTCsHkpdvttmM2W++ZHFmgVxKOTQmtTZFsmwohJNfALkoQaw9NgKUuBKzPdI DutmXNBLXm+EkEjuIjvsKdgE63g49BTio9BRzX85+PKYmRohOa5xb05pW4KLOvOW WJ4KeUDHdWinIoedBg+FGlgWjACP3at6h3sKVqDsv76NmsCZHWjh3OV2pqQSp1ta n7HD/xPoGKNRDb+8r1CL3YLgwY4Hdvkq73koX8BGJ1jkB7LmikofGz0tnigcjrY/ D4QIPu+nIsi7hZs4S2nSMvvLWcdhUkDFa1F0hf3shYV+tPqUAFMYeG5MwMEQ4zqW KMUieCPRA4n5jiwQ3CBZgfcB+tCNJnsEkDtLoJydKNvgawpTanff7IJO2vALN64K PnIcPkHzFlbQj8lOLffCTFqqnOabkwaxeyV5r9oiT0OAg0paRBXrAo3VyVONzwqK vMAhNSygqeKudQ8EQcQS+0ymyjfSCJXa1M93lVG679VKcyVVrs0uEhjvub1abv3v Co08qKk18lsqYc55E8BzZ4T+F/mifzmEIPblM6EA9DnooSSrE/o= =rUxA -----END PGP SIGNATURE----- Merge tag 'mailbox-v5.2' of git://git.linaro.org/landing-teams/working/fujitsu/integration Pull mailbox updates from Jassi Brar: - New driver: Armada 37xx mailbox controller - Misc: Use devm_ api for imx and platform_get_irq for stm32 * tag 'mailbox-v5.2' of git://git.linaro.org/landing-teams/working/fujitsu/integration: mailbox: Add support for Armada 37xx rWTM mailbox dt-bindings: mailbox: Document armada-3700-rwtm-mailbox binding mailbox: stm32-ipcc: check invalid irq mailbox: imx: use devm_platform_ioremap_resource() to simplify code |
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Petr Mladek
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2ac5a3bf70 |
vsprintf: Do not break early boot with probing addresses
The commit |
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Linus Torvalds
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b970afcfca |
powerpc updates for 5.2
Highlights: - Support for Kernel Userspace Access/Execution Prevention (like SMAP/SMEP/PAN/PXN) on some 64-bit and 32-bit CPUs. This prevents the kernel from accidentally accessing userspace outside copy_to/from_user(), or ever executing userspace. - KASAN support on 32-bit. - Rework of where we map the kernel, vmalloc, etc. on 64-bit hash to use the same address ranges we use with the Radix MMU. - A rewrite into C of large parts of our idle handling code for 64-bit Book3S (ie. power8 & power9). - A fast path entry for syscalls on 32-bit CPUs, for a 12-17% speedup in the null_syscall benchmark. - On 64-bit bare metal we have support for recovering from errors with the time base (our clocksource), however if that fails currently we hang in __delay() and never crash. We now have support for detecting that case and short circuiting __delay() so we at least panic() and reboot. - Add support for optionally enabling the DAWR on Power9, which had to be disabled by default due to a hardware erratum. This has the effect of enabling hardware breakpoints for GDB, the downside is a badly behaved program could crash the machine by pointing the DAWR at cache inhibited memory. This is opt-in obviously. - xmon, our crash handler, gets support for a read only mode where operations that could change memory or otherwise disturb the system are disabled. Plus many clean-ups, reworks and minor fixes etc. Thanks to: Christophe Leroy, Akshay Adiga, Alastair D'Silva, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Ben Hutchings, Bo YU, Breno Leitao, Cédric Le Goater, Christopher M. Riedl, Christoph Hellwig, Colin Ian King, David Gibson, Ganesh Goudar, Gautham R. Shenoy, George Spelvin, Greg Kroah-Hartman, Greg Kurz, Horia Geantă, Jagadeesh Pagadala, Joel Stanley, Joe Perches, Julia Lawall, Laurentiu Tudor, Laurent Vivier, Lukas Bulwahn, Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre, Michael Neuling, Mukesh Ojha, Nathan Fontenot, Nathan Lynch, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Peng Hao, Qian Cai, Ravi Bangoria, Rick Lindsley, Russell Currey, Sachin Sant, Stewart Smith, Sukadev Bhattiprolu, Thomas Huth, Tobin C. Harding, Tyrel Datwyler, Valentin Schneider, Wei Yongjun, Wen Yang, YueHaibing. -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJc1WbwAAoJEFHr6jzI4aWAv5cP/iDskai4Az/GCa6yLj4b+det 7mc7tTOaEzhUtvfrYYfHgvvdNNzo1ETv7rqTdZqtWJ3xfwdeowLFXXZwSywZKUDB bi4pcl2v55Qlf9kxgx9RDr6+4fTwGG4nhO2qPDJDR1umEih9mG/2HJ7d+Wnq6Va2 E9srd+R6Fa0ty88+9vzBtdyllnDK1XHu3ahsxCH62aRm79ucuVrxyydWmbbs5lJe a7g/OQIPgZmObHhfXvw9DFkOvkp5Pm6hfHOeyQH2nTB5X6k0judWv00uoHTJgOuP DKxZtDhaGnajUfuhQYboDPOuFjY7lkfgEXaagyZsjdudqridTMmv1iU1o7iy8BT4 AId4DyJbvFFgqRJkCwKzhKRRHPfFMfM7KTJ38GPZuPmniuULk9uiIy6JyY0tXO+l UQEclPzOTPkAE12FBaOBuqZqTRuBQuokWQF8ZDPOxbNAixHgFoRd4Z9diNwCPpLu +KoyCwd2Gm5DyX+mC85sWG28IPKi9Hhhw2XBOA5F4A2kH6uFa1BnERSRGYomx+pc BvEXHglf/vgV0XUQZfDCsiOecIKYuWxgre0/liLhhU5qMss2pxHczzffH4KtdykS 9y7o3mVRcS7Moitbmb6SAJoQxbR5QhzfN832DbSd6jEfKdg1ytZlfHTG0WZYHKDs PHs6V1N+cQANdukutrJz =cUkd -----END PGP SIGNATURE----- Merge tag 'powerpc-5.2-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Slightly delayed due to the issue with printk() calling probe_kernel_read() interacting with our new user access prevention stuff, but all fixed now. The only out-of-area changes are the addition of a cpuhp_state, small additions to Documentation and MAINTAINERS updates. Highlights: - Support for Kernel Userspace Access/Execution Prevention (like SMAP/SMEP/PAN/PXN) on some 64-bit and 32-bit CPUs. This prevents the kernel from accidentally accessing userspace outside copy_to/from_user(), or ever executing userspace. - KASAN support on 32-bit. - Rework of where we map the kernel, vmalloc, etc. on 64-bit hash to use the same address ranges we use with the Radix MMU. - A rewrite into C of large parts of our idle handling code for 64-bit Book3S (ie. power8 & power9). - A fast path entry for syscalls on 32-bit CPUs, for a 12-17% speedup in the null_syscall benchmark. - On 64-bit bare metal we have support for recovering from errors with the time base (our clocksource), however if that fails currently we hang in __delay() and never crash. We now have support for detecting that case and short circuiting __delay() so we at least panic() and reboot. - Add support for optionally enabling the DAWR on Power9, which had to be disabled by default due to a hardware erratum. This has the effect of enabling hardware breakpoints for GDB, the downside is a badly behaved program could crash the machine by pointing the DAWR at cache inhibited memory. This is opt-in obviously. - xmon, our crash handler, gets support for a read only mode where operations that could change memory or otherwise disturb the system are disabled. Plus many clean-ups, reworks and minor fixes etc. Thanks to: Christophe Leroy, Akshay Adiga, Alastair D'Silva, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Ben Hutchings, Bo YU, Breno Leitao, Cédric Le Goater, Christopher M. Riedl, Christoph Hellwig, Colin Ian King, David Gibson, Ganesh Goudar, Gautham R. Shenoy, George Spelvin, Greg Kroah-Hartman, Greg Kurz, Horia Geantă, Jagadeesh Pagadala, Joel Stanley, Joe Perches, Julia Lawall, Laurentiu Tudor, Laurent Vivier, Lukas Bulwahn, Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre, Michael Neuling, Mukesh Ojha, Nathan Fontenot, Nathan Lynch, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Peng Hao, Qian Cai, Ravi Bangoria, Rick Lindsley, Russell Currey, Sachin Sant, Stewart Smith, Sukadev Bhattiprolu, Thomas Huth, Tobin C. Harding, Tyrel Datwyler, Valentin Schneider, Wei Yongjun, Wen Yang, YueHaibing" * tag 'powerpc-5.2-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (205 commits) powerpc/64s: Use early_mmu_has_feature() in set_kuap() powerpc/book3s/64: check for NULL pointer in pgd_alloc() powerpc/mm: Fix hugetlb page initialization ocxl: Fix return value check in afu_ioctl() powerpc/mm: fix section mismatch for setup_kup() powerpc/mm: fix redundant inclusion of pgtable-frag.o in Makefile powerpc/mm: Fix makefile for KASAN powerpc/kasan: add missing/lost Makefile selftests/powerpc: Add a signal fuzzer selftest powerpc/booke64: set RI in default MSR ocxl: Provide global MMIO accessors for external drivers ocxl: move event_fd handling to frontend ocxl: afu_irq only deals with IRQ IDs, not offsets ocxl: Allow external drivers to use OpenCAPI contexts ocxl: Create a clear delineation between ocxl backend & frontend ocxl: Don't pass pci_dev around ocxl: Split pci.c ocxl: Remove some unused exported symbols ocxl: Remove superfluous 'extern' from headers ocxl: read_pasid never returns an error, so make it void ... |
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Christian Brauner
|
c3b7112df8
|
fork: do not release lock that wasn't taken
Avoid calling cgroup_threadgroup_change_end() without having called
cgroup_threadgroup_change_begin() first.
During process creation we need to check whether the cgroup we are in
allows us to fork. To perform this check the cgroup needs to guard itself
against threadgroup changes and takes a lock.
Prior to CLONE_PIDFD the cleanup target "bad_fork_free_pid" would also need
to call cgroup_threadgroup_change_end() because said lock had already been
taken.
However, this is not the case anymore with the addition of CLONE_PIDFD. We
are now allocating a pidfd before we check whether the cgroup we're in can
fork and thus prior to taking the lock. So when copy_process() fails at the
right step it would release a lock we haven't taken.
This bug is not even very subtle to be honest. It's just not very clear
from the naming of cgroup_threadgroup_change_{begin,end}() that a lock is
taken.
Here's the relevant splat:
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fec849
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90
90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90
90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffed5a8c EFLAGS: 00000246 ORIG_RAX: 0000000000000078
RAX: ffffffffffffffda RBX: 0000000000003ffc RCX: 0000000000000000
RDX: 00000000200005c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000012 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(depth <= 0)
WARNING: CPU: 1 PID: 7744 at kernel/locking/lockdep.c:4052 __lock_release
kernel/locking/lockdep.c:4052 [inline]
WARNING: CPU: 1 PID: 7744 at kernel/locking/lockdep.c:4052
lock_release+0x667/0xa00 kernel/locking/lockdep.c:4321
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 7744 Comm: syz-executor007 Not tainted 5.1.0+ #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
panic+0x2cb/0x65c kernel/panic.c:214
__warn.cold+0x20/0x45 kernel/panic.c:566
report_bug+0x263/0x2b0 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:179 [inline]
fixup_bug arch/x86/kernel/traps.c:174 [inline]
do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:972
RIP: 0010:__lock_release kernel/locking/lockdep.c:4052 [inline]
RIP: 0010:lock_release+0x667/0xa00 kernel/locking/lockdep.c:4321
Code: 0f 85 a0 03 00 00 8b 35 77 66 08 08 85 f6 75 23 48 c7 c6 a0 55 6b 87
48 c7 c7 40 25 6b 87 4c 89 85 70 ff ff ff e8 b7 a9 eb ff <0f> 0b 4c 8b 85
70 ff ff ff 4c 89 ea 4c 89 e6 4c 89 c7 e8 52 63 ff
RSP: 0018:ffff888094117b48 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 1ffff11012822f6f RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815af236 RDI: ffffed1012822f5b
RBP: ffff888094117c00 R08: ffff888092bfc400 R09: fffffbfff113301d
R10: fffffbfff113301c R11: ffffffff889980e3 R12: ffffffff8a451df8
R13: ffffffff8142e71f R14: ffffffff8a44cc80 R15: ffff888094117bd8
percpu_up_read.constprop.0+0xcb/0x110 include/linux/percpu-rwsem.h:92
cgroup_threadgroup_change_end include/linux/cgroup-defs.h:712 [inline]
copy_process.part.0+0x47ff/0x6710 kernel/fork.c:2222
copy_process kernel/fork.c:1772 [inline]
_do_fork+0x25d/0xfd0 kernel/fork.c:2338
__do_compat_sys_x86_clone arch/x86/ia32/sys_ia32.c:240 [inline]
__se_compat_sys_x86_clone arch/x86/ia32/sys_ia32.c:236 [inline]
__ia32_compat_sys_x86_clone+0xbc/0x140 arch/x86/ia32/sys_ia32.c:236
do_syscall_32_irqs_on arch/x86/entry/common.c:334 [inline]
do_fast_syscall_32+0x281/0xd54 arch/x86/entry/common.c:405
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fec849
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90
90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90
90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffed5a8c EFLAGS: 00000246 ORIG_RAX: 0000000000000078
RAX: ffffffffffffffda RBX: 0000000000003ffc RCX: 0000000000000000
RDX: 00000000200005c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000012 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..
Reported-and-tested-by: syzbot+3286e58549edc479faae@syzkaller.appspotmail.com
Fixes:
|
||
Christian Brauner
|
8b0e1fea30
|
samples: add .gitignore for pidfd-metadata
Ignore the pidfd-metadata binary so it doesn't show up in unwanted scenarios. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Christian Brauner <christian@brauner.io> |
||
Linus Torvalds
|
8ea5b2abd0 |
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs mount fix from Al Viro: "Fix for umount -l/mount --move race caught by syzbot yesterday..." * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: do_move_mount(): fix an unsafe use of is_anon_ns() |
||
Linus Torvalds
|
601e6bcc4e |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller: "Several bug fixes, many are quick merge-window regression cures: - When NLM_F_EXCL is not set, allow same fib rule insertion. From Hangbin Liu. - Several cures in sja1105 DSA driver (while loop exit condition fix, return of negative u8, etc.) from Vladimir Oltean. - Handle tx/rx delays in realtek PHY driver properly, from Serge Semin. - Double free in cls_matchall, from Pieter Jansen van Vuuren. - Disable SIOCSHWTSTAMP in macvlan/vlan containers, from Hangbin Liu. - Endainness fixes in aqc111, from Oliver Neukum. - Handle errors in packet_init properly, from Haibing Yue. - Various W=1 warning fixes in kTLS, from Jakub Kicinski" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (34 commits) nfp: add missing kdoc net/tls: handle errors from padding_length() net/tls: remove set but not used variables docs/btf: fix the missing section marks nfp: bpf: fix static check error through tightening shift amount adjustment selftests: bpf: initialize bpf_object pointers where needed packet: Fix error path in packet_init net/tcp: use deferred jump label for TCP acked data hook net: aquantia: fix undefined devm_hwmon_device_register_with_info reference aqc111: fix double endianness swap on BE aqc111: fix writing to the phy on BE aqc111: fix endianness issue in aqc111_change_mtu vlan: disable SIOCSHWTSTAMP in container macvlan: disable SIOCSHWTSTAMP in container tipc: fix hanging clients using poll with EPOLLOUT flag tuntap: synchronize through tfiles array instead of tun->numqueues tuntap: fix dividing by zero in ebpf queue selection dwmac4_prog_mtl_tx_algorithms() missing write operation ptp_qoriq: fix NULL access if ptp dt node missing net/sched: avoid double free on matchall reoffload ... |
||
Jakub Kicinski
|
6c9f054414 |
nfp: add missing kdoc
Add missing kdoc for app member. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
David S. Miller
|
f50c8a019b |
Merge branch 'tls-warnings'
Jakub Kicinski says: ==================== net/tls: fix W=1 build warnings This small series cleans up two outstanding W=1 build warnings in tls code. Both are set but not used variables. The first case looks fairly straightforward. In the second I think it's better to propagate the error code, even if not doing some does not lead to a crash with current code. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |