Can be helpful in debugging mount and reconnect issues
Signed-off-by: Samuel Cabrero <scabrero@suse.de>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
TCP server info field server->total_read is modified in parallel by
demultiplex thread and decrypt offload worker thread. server->total_read
is used in calculation to discard the remaining data of PDU which is
not read into memory.
Because of parallel modification, server->total_read can get corrupted
and can result in discarding the valid data of next PDU.
Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
CC: Stable <stable@vger.kernel.org> #5.4+
Signed-off-by: Steve French <stfrench@microsoft.com>
Don't populate const array smb3_create_tag_posix on the stack but
instead make it static. Makes the object code smaller by 50 bytes.
Before:
text data bss dec hex filename
150184 47167 0 197351 302e7 fs/cifs/smb2pdu.o
After:
text data bss dec hex filename
150070 47231 0 197301 302b5 fs/cifs/smb2pdu.o
(gcc version 10.2.0)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
We were setting the uid/gid to the default in each dir entry
in the parsing of the POSIX query dir response, rather
than attempting to map the user and group SIDs returned by
the server to well known SIDs (or upcall if not found).
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
SMB3 crediting is used for flow control, and it can be useful to
trace for problem determination how many credits were acquired
and for which operation.
Here is an example ("trace-cmd record -e *add_credits"):
cifsd-9522 [010] .... 5995.202712: smb3_add_credits:
server=localhost current_mid=0x12 credits=373 credits_to_add=10
cifsd-9522 [010] .... 5995.204040: smb3_add_credits:
server=localhost current_mid=0x15 credits=400 credits_to_add=30
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
There are cases where the server can return a cipher type of 0 and
it not be an error. For example server supported no encryption types
(e.g. server completely disabled encryption), or the server and
client didn't support any encryption types in common (e.g. if a
server only supported AES256_CCM). In those cases encryption would
not be supported, but that can be ok if the client did not require
encryption on mount and it should not return an error.
In the case in which mount requested encryption ("seal" on mount)
then checks later on during tree connection will return the proper
rc, but if seal was not requested by client, since server is allowed
to return 0 to indicate no supported cipher, we should not fail mount.
Reported-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
In crypt_message, when smb2_get_enc_key returns error, we need to
return the error back to the caller. If not, we end up processing
the message further, causing a kernel oops due to unwarranted access
of memory.
Call Trace:
smb3_receive_transform+0x120/0x870 [cifs]
cifs_demultiplex_thread+0xb53/0xc20 [cifs]
? cifs_handle_standard+0x190/0x190 [cifs]
kthread+0x116/0x130
? kthread_park+0x80/0x80
ret_from_fork+0x1f/0x30
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Now that 256 bit encryption can be negotiated, update
names of the nonces to match the updated official protocol
documentation (e.g. AES_GCM_NONCE instead of AES_128GCM_NONCE)
since they apply to both 128 bit and 256 bit encryption.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
If server does not support AES-256-GCM and it was required on mount, print
warning message. Also log and return a different error message (EOPNOTSUPP)
when encryption mechanism is not supported vs the case when an unknown
unrequested encryption mechanism could be returned (EINVAL).
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Add new module load parameter enable_gcm_256. If set, then add
AES-256-GCM (strongest encryption type) to the list of encryption
types requested. Put it in the list as the second choice (since
AES-128-GCM is faster and much more broadly supported by
SMB3 servers). To make this stronger encryption type, GCM-256,
required (the first and only choice, you would use module parameter
"require_gcm_256."
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Add new module load parameter require_gcm_256. If set, then only
request AES-256-GCM (strongest encryption type).
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This is basically the same as STATUS_LOGON_FAILURE,
but after the account is locked out.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Currently there are three supported signing algorithms
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
RHBZ: 1848178
Some calls that set attributes, like utimensat(), are not supposed to return
-EINTR and thus do not have handlers for this in glibc which causes us
to leak -EINTR to the applications which are also unprepared to handle it.
For example tar will break if utimensat() return -EINTR and abort unpacking
the archive. Other applications may break too.
To handle this we add checks, and retry, for -EINTR in cifs_setattr()
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Currently STATUS_IO_TIMEOUT is not treated as retriable error.
It is currently mapped to ETIMEDOUT and returned to userspace
for most system calls. STATUS_IO_TIMEOUT is returned by server
in case of unavailability or throttling errors.
This patch will map the STATUS_IO_TIMEOUT to EAGAIN, so that it
can be retried. Also, added a check to drop the connection to
not overload the server in case of ongoing unavailability.
Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Cleanup patch for followon to cache additional information for the root directory
when directory lease held.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Cleanup patch for followon to cache additional information for the root directory
when directory lease held.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
MS-SMB2 was updated recently to include new protocol definitions for
updated compression payload header and new RDMA transform capabilities
Update structure definitions in smb2pdu.h to match
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
In encryption capabilities negotiate context can now request
AES256 GCM or CCM
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
When converting trailing spaces and periods in paths, do so
for every component of the path, not just the last component.
If the conversion is not done for every path component, then
subsequent operations in directories with trailing spaces or
periods (e.g. create(), mkdir()) will fail with ENOENT. This
is because on the server, the directory will have a special
symbol in its name, and the client needs to provide the same.
Signed-off-by: Boris Protopopov <pboris@amazon.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Merge misc fixes from Andrew Morton:
"Five fixes.
Subsystems affected by this patch series: MAINTAINERS, mm/pagemap,
mm/swap, and mm/hugetlb"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged
mm: validate inode in mapping_set_error()
mm: mmap: Fix general protection fault in unlink_file_vma()
MAINTAINERS: Antoine Tenart's email address
MAINTAINERS: change hardening mailing list
Pull vfs fix from Al Viro:
"Fixes an obvious bug (memory leak introduced in 5.8)"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
pipe: Fix memory leaks in create_pipe_files()
- Fix a (hopefully final) IRQ state tracking bug vs. MCE handling
- Fix a documentation link
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=UbZR
-----END PGP SIGNATURE-----
Merge tag 'x86-urgent-2020-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Two fixes:
- Fix a (hopefully final) IRQ state tracking bug vs MCE handling
- Fix a documentation link"
* tag 'x86-urgent-2020-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation/x86: Fix incorrect references to zero-page.txt
x86/mce: Use idtentry_nmi_enter/exit()
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=IeZB
-----END PGP SIGNATURE-----
Merge tag 'perf-urgent-2020-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Ingo Molnar:
"Fix an error handling bug that can cause a lockup if a CPU is offline
(doh ...)"
* tag 'perf-urgent-2020-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix task_function_call() error handling
When memory is hotplug added or removed the min_free_kbytes should be
recalculated based on what is expected by khugepaged. Currently after
hotplug, min_free_kbytes will be set to a lower default and higher
default set when THP enabled is lost.
This change restores min_free_kbytes as expected for THP consumers.
[vijayb@linux.microsoft.com: v5]
Link: https://lkml.kernel.org/r/1601398153-5517-1-git-send-email-vijayb@linux.microsoft.com
Fixes: f000565adb ("thp: set recommended min free kbytes")
Signed-off-by: Vijay Balakrishna <vijayb@linux.microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Allen Pais <apais@microsoft.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/1600305709-2319-2-git-send-email-vijayb@linux.microsoft.com
Link: https://lkml.kernel.org/r/1600204258-13683-1-git-send-email-vijayb@linux.microsoft.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The swap address_space doesn't have host. Thus, it makes kernel crash once
swap write meets error. Fix it.
Fixes: 735e4ae5ba ("vfs: track per-sb writeback errors and report them to syncfs")
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Jeff Layton <jlayton@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Andres Freund <andres@anarazel.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Dave Chinner <david@fromorbit.com>
Cc: David Howells <dhowells@redhat.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201010000650.750063-1-minchan@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The syzbot reported the below general protection fault:
general protection fault, probably for non-canonical address
0xe00eeaee0000003b: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x00777770000001d8-0x00777770000001df]
CPU: 1 PID: 10488 Comm: syz-executor721 Not tainted 5.9.0-rc3-syzkaller #0
RIP: 0010:unlink_file_vma+0x57/0xb0 mm/mmap.c:164
Call Trace:
free_pgtables+0x1b3/0x2f0 mm/memory.c:415
exit_mmap+0x2c0/0x530 mm/mmap.c:3184
__mmput+0x122/0x470 kernel/fork.c:1076
mmput+0x53/0x60 kernel/fork.c:1097
exit_mm kernel/exit.c:483 [inline]
do_exit+0xa8b/0x29f0 kernel/exit.c:793
do_group_exit+0x125/0x310 kernel/exit.c:903
get_signal+0x428/0x1f00 kernel/signal.c:2757
arch_do_signal+0x82/0x2520 arch/x86/kernel/signal.c:811
exit_to_user_mode_loop kernel/entry/common.c:136 [inline]
exit_to_user_mode_prepare+0x1ae/0x200 kernel/entry/common.c:167
syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:242
entry_SYSCALL_64_after_hwframe+0x44/0xa9
It's because the ->mmap() callback can change vma->vm_file and fput the
original file. But the commit d70cec8983 ("mm: mmap: merge vma after
call_mmap() if possible") failed to catch this case and always fput()
the original file, hence add an extra fput().
[ Thanks Hillf for pointing this extra fput() out. ]
Fixes: d70cec8983 ("mm: mmap: merge vma after call_mmap() if possible")
Reported-by: syzbot+c5d5a51dcbb558ca0cb5@syzkaller.appspotmail.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christian König <ckoenig.leichtzumerken@gmail.com>
Cc: Hongxiang Lou <louhongxiang@huawei.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Link: https://lkml.kernel.org/r/20200916090733.31427-1-linmiaohe@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Use my kernel.org address instead of my bootlin.com one.
Signed-off-by: Antoine Tenart <atenart@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20201005164533.16811-1-atenart@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
As more email from git history gets aimed at the OpenWall
kernel-hardening@ list, there has been a desire to separate "new topics"
from "on-going" work.
To handle this, the superset of hardening email topics are now to be
directed to linux-hardening@vger.kernel.org.
Update the MAINTAINERS file and the .mailmap to accomplish this, so that
linux-hardening@ can be treated like any other regular upstream kernel
development list.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Emese Revfy <re.emese@gmail.com>
Cc: "Tobin C. Harding" <me@tobin.cc>
Cc: Tycho Andersen <tycho@tycho.pizza>
Cc: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/linux-hardening/202010051443.279CC265D@keescook/
Link: https://lkml.kernel.org/r/20201006000012.2768958-1-keescook@chromium.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull i2c fixes from Wolfram Sang:
"Some more driver bugfixes for I2C. Including a revert - the updated
series for it will come during the next merge window"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: owl: Clear NACK and BUS error bits
Revert "i2c: imx: Fix reset of I2SR_IAL flag"
i2c: meson: fixup rate calculation with filter delay
i2c: meson: keep peripheral clock enabled
i2c: meson: fix clock setting overwrite
i2c: imx: Fix reset of I2SR_IAL flag
On setxattr() syscall path due to an apprent typo the size of a dynamically
allocated memory chunk for storing struct smb2_file_full_ea_info object is
computed incorrectly, to be more precise the first addend is the size of
a pointer instead of the wanted object size. Coincidentally it makes no
difference on 64-bit platforms, however on 32-bit targets the following
memcpy() writes 4 bytes of data outside of the dynamically allocated memory.
=============================================================================
BUG kmalloc-16 (Not tainted): Redzone overwritten
-----------------------------------------------------------------------------
Disabling lock debugging due to kernel taint
INFO: 0x79e69a6f-0x9e5cdecf @offset=368. First byte 0x73 instead of 0xcc
INFO: Slab 0xd36d2454 objects=85 used=51 fp=0xf7d0fc7a flags=0x35000201
INFO: Object 0x6f171df3 @offset=352 fp=0x00000000
Redzone 5d4ff02d: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 6f171df3: 00 00 00 00 00 05 06 00 73 6e 72 75 62 00 66 69 ........snrub.fi
Redzone 79e69a6f: 73 68 32 0a sh2.
Padding 56254d82: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ
CPU: 0 PID: 8196 Comm: attr Tainted: G B 5.9.0-rc8+ #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1 04/01/2014
Call Trace:
dump_stack+0x54/0x6e
print_trailer+0x12c/0x134
check_bytes_and_report.cold+0x3e/0x69
check_object+0x18c/0x250
free_debug_processing+0xfe/0x230
__slab_free+0x1c0/0x300
kfree+0x1d3/0x220
smb2_set_ea+0x27d/0x540
cifs_xattr_set+0x57f/0x620
__vfs_setxattr+0x4e/0x60
__vfs_setxattr_noperm+0x4e/0x100
__vfs_setxattr_locked+0xae/0xd0
vfs_setxattr+0x4e/0xe0
setxattr+0x12c/0x1a0
path_setxattr+0xa4/0xc0
__ia32_sys_lsetxattr+0x1d/0x20
__do_fast_syscall_32+0x40/0x70
do_fast_syscall_32+0x29/0x60
do_SYSENTER_32+0x15/0x20
entry_SYSENTER_32+0x9f/0xf2
Fixes: 5517554e43 ("cifs: Add support for writing attributes on SMB2+")
Signed-off-by: Vladimir Zapolskiy <vladimir@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There have been elusive reports of filemap_fault() hitting its
VM_BUG_ON_PAGE(page_to_pgoff(page) != offset, page) on kernels built
with CONFIG_READ_ONLY_THP_FOR_FS=y.
Suren has hit it on a kernel with CONFIG_READ_ONLY_THP_FOR_FS=y and
CONFIG_NUMA is not set: and he has analyzed it down to how khugepaged
without NUMA reuses the same huge page after collapse_file() failed
(whereas NUMA targets its allocation to the respective node each time).
And most of us were usually testing with CONFIG_NUMA=y kernels.
collapse_file(old start)
new_page = khugepaged_alloc_page(hpage)
__SetPageLocked(new_page)
new_page->index = start // hpage->index=old offset
new_page->mapping = mapping
xas_store(&xas, new_page)
filemap_fault
page = find_get_page(mapping, offset)
// if offset falls inside hpage then
// compound_head(page) == hpage
lock_page_maybe_drop_mmap()
__lock_page(page)
// collapse fails
xas_store(&xas, old page)
new_page->mapping = NULL
unlock_page(new_page)
collapse_file(new start)
new_page = khugepaged_alloc_page(hpage)
__SetPageLocked(new_page)
new_page->index = start // hpage->index=new offset
new_page->mapping = mapping // mapping becomes valid again
// since compound_head(page) == hpage
// page_to_pgoff(page) got changed
VM_BUG_ON_PAGE(page_to_pgoff(page) != offset)
An initial patch replaced __SetPageLocked() by lock_page(), which did
fix the race which Suren illustrates above. But testing showed that it's
not good enough: if the racing task's __lock_page() gets delayed long
after its find_get_page(), then it may follow collapse_file(new start)'s
successful final unlock_page(), and crash on the same VM_BUG_ON_PAGE.
It could be fixed by relaxing filemap_fault()'s VM_BUG_ON_PAGE to a
check and retry (as is done for mapping), with similar relaxations in
find_lock_entry() and pagecache_get_page(): but it's not obvious what
else might get caught out; and khugepaged non-NUMA appears to be unique
in exposing a page to page cache, then revoking, without going through
a full cycle of freeing before reuse.
Instead, non-NUMA khugepaged_prealloc_page() release the old page
if anyone else has a reference to it (1% of cases when I tested).
Although never reported on huge tmpfs, I believe its find_lock_entry()
has been at similar risk; but huge tmpfs does not rely on khugepaged
for its normal working nearly so much as READ_ONLY_THP_FOR_FS does.
Reported-by: Denis Lisov <dennis.lissov@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=206569
Link: https://lore.kernel.org/linux-mm/?q=20200219144635.3b7417145de19b65f258c943%40linux-foundation.org
Reported-by: Qian Cai <cai@lca.pw>
Link: https://lore.kernel.org/linux-xfs/?q=20200616013309.GB815%40lca.pw
Reported-and-analyzed-by: Suren Baghdasaryan <surenb@google.com>
Fixes: 87c460a0bd ("mm/khugepaged: collapse_shmem() without freezing new_page")
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@vger.kernel.org # v4.9+
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When the NACK and BUS error bits are set by the hardware, the driver is
responsible for clearing them by writing "1" into the corresponding
status registers.
Hence perform the necessary operations in owl_i2c_interrupt().
Fixes: d211e62af4 ("i2c: Add Actions Semiconductor Owl family S900 I2C driver")
Reported-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This reverts commit fa4d305568. An updated
version was sent. So, revert this version and give the new version more
time for testing.
Signed-off-by: Wolfram Sang <wsa@kernel.org>
One last minute fix for v5.9 which has been causing crashes in test
systems with the fsl-dspi driver when they hit deferred probe (and which
I probably let cook in next a bit longer than is ideal) plus an update
to MAINTAINERS reflecting Serge's extensive and detailed recent work on
the DesignWare driver.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl+A7v4ACgkQJNaLcl1U
h9C4wgf/Uueuh7a92KHslaVbH9NisM80NimbWXmVAMHQ7oTpRPQg84CV+/a6glbc
33aaCKcSDA8Tgww6n6uSXDZCwgjQ5WuXI7yDVDoE/wDC2p0uD8jC3Sz0hV2OU+37
8MGaYHONdKFELKZTXLnKU7J1yWzwHiWFDdkzZaAOabI80e1Ar2XyLkXDikOZVB6+
65c9pmF1V9tcMxuLyqceTqP6ilTt8MmsgOMr/d+w7hjEmtx3WH7ghv/eAU8cOUgf
kVPsEvdyAY9EXlGAZ7g9b5G1SqUs1KJK37HvfdVdq8LoLzwbQON1K6welqXk9Y6h
v5uFRg13kw1MDPR84nFANhWPGMekTA==
=pg9I
-----END PGP SIGNATURE-----
Merge tag 'spi-fix-v5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fix from Mark Brown:
"One last minute fix for v5.9 which has been causing crashes in test
systems with the fsl-dspi driver when they hit deferred probe (and
which I probably let cook in next a bit longer than is ideal).
And an update to MAINTAINERS reflecting Serge's extensive and
detailed recent work on the DesignWare driver"
* tag 'spi-fix-v5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
MAINTAINERS: Add maintainer of DW APB SSI driver
spi: fsl-dspi: fix NULL pointer dereference
I have two fixes this week:
* A fix to actually reserve the device tree's memory. Without this the device
tree can be overwritten on systems that don't otherwise reserve it. This
issue should only manifest on !MMU systems.
* A workaround for a BUG() that triggers when the memory that originally
contained initdata is freed and later repurposed. This triggers a BUG() on
builds that with HARDENED_USERCOPY enabled.
-----BEGIN PGP SIGNATURE-----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=4txT
-----END PGP SIGNATURE-----
Merge tag 'riscv-for-linus-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
"Two fixes this week:
- A fix to actually reserve the device tree's memory. Without this
the device tree can be overwritten on systems that don't otherwise
reserve it. This issue should only manifest on !MMU systems.
- A workaround for a BUG() that triggers when the memory that
originally contained initdata is freed and later repurposed. This
triggers a BUG() on builds that had HARDENED_USERCOPY enabled"
* tag 'riscv-for-linus-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Fixup bootup failure with HARDENED_USERCOPY
RISC-V: Make sure memblock reserves the memory containing DT
Just a single change to revert enablement of packet error checking
for battery data on Chromebooks, since some of their embedded
controllers do not handle it correctly.
-----BEGIN PGP SIGNATURE-----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=VEU/
-----END PGP SIGNATURE-----
Merge tag 'for-v5.9-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply fix from Sebastian Reichel:
"Just a single change to revert enablement of packet error checking for
battery data on Chromebooks, since some of their embedded controllers
do not handle it correctly"
* tag 'for-v5.9-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply:
power: supply: sbs-battery: chromebook workaround for PEC
- Fix a compilation issue with User Mode Linux.
- Handle spurious interrupts properly in the PCA953x driver.
-----BEGIN PGP SIGNATURE-----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=yEo/
-----END PGP SIGNATURE-----
Merge tag 'gpio-v5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Some late fixes: one IRQ issue and one compilation issue for UML.
- Fix a compilation issue with User Mode Linux
- Handle spurious interrupts properly in the PCA953x driver"
* tag 'gpio-v5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: pca953x: Survive spurious interrupts
gpiolib: Disable compat ->read() code in UML case
- Assign a proper discard granularity rather than incorrectly set it to 0
-----BEGIN PGP SIGNATURE-----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=S62I
-----END PGP SIGNATURE-----
Merge tag 'mmc-v5.9-rc4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fix from Ulf Hansson:
"Assign a proper discard granularity rather than incorrectly set it to
zero"
* tag 'mmc-v5.9-rc4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: core: don't set limits.discard_granularity as 0
amdgpu:
- Fix a crash on renoir if you override the IP discovery parameter
- Fix the build on ARC platforms
- Display fix for Sienna Cichlid
-----BEGIN PGP SIGNATURE-----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=EI05
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-2020-10-09' of git://anongit.freedesktop.org/drm/drm
Pull amdgpu drm fixes from Dave Airlie:
"Fixes trickling in this week.
Alex had a final fix for the newest GPU they introduced in rc1, along
with one build regression and one crasher fix.
Cross my fingers that's it for 5.9:
- Fix a crash on renoir if you override the IP discovery parameter
- Fix the build on ARC platforms
- Display fix for Sienna Cichlid"
* tag 'drm-fixes-2020-10-09' of git://anongit.freedesktop.org/drm/drm:
drm/amd/display: Change ABM config init interface
drm/amdgpu/swsmu: fix ARC build errors
drm/amdgpu: fix NULL pointer dereference for Renoir
In mmc_queue_setup_discard() the mmc driver queue's discard_granularity
might be set as 0 (when card->pref_erase > max_discard) while the mmc
device still declares to support discard operation. This is buggy and
triggered the following kernel warning message,
WARNING: CPU: 0 PID: 135 at __blkdev_issue_discard+0x200/0x294
CPU: 0 PID: 135 Comm: f2fs_discard-17 Not tainted 5.9.0-rc6 #1
Hardware name: Google Kevin (DT)
pstate: 00000005 (nzcv daif -PAN -UAO BTYPE=--)
pc : __blkdev_issue_discard+0x200/0x294
lr : __blkdev_issue_discard+0x54/0x294
sp : ffff800011dd3b10
x29: ffff800011dd3b10 x28: 0000000000000000 x27: ffff800011dd3cc4 x26: ffff800011dd3e18 x25: 000000000004e69b x24: 0000000000000c40 x23: ffff0000f1deaaf0 x22: ffff0000f2849200 x21: 00000000002734d8 x20: 0000000000000008 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000394 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 00000000000008b0 x9 : ffff800011dd3cb0 x8 : 000000000004e69b x7 : 0000000000000000 x6 : ffff0000f1926400 x5 : ffff0000f1940800 x4 : 0000000000000000 x3 : 0000000000000c40 x2 : 0000000000000008 x1 : 00000000002734d8 x0 : 0000000000000000 Call trace:
__blkdev_issue_discard+0x200/0x294
__submit_discard_cmd+0x128/0x374
__issue_discard_cmd_orderly+0x188/0x244
__issue_discard_cmd+0x2e8/0x33c
issue_discard_thread+0xe8/0x2f0
kthread+0x11c/0x120
ret_from_fork+0x10/0x1c
---[ end trace e4c8023d33dfe77a ]---
This patch fixes the issue by setting discard_granularity as SECTOR_SIZE
instead of 0 when (card->pref_erase > max_discard) is true. Now no more
complain from __blkdev_issue_discard() for the improper value of discard
granularity.
This issue is exposed after commit b35fd7422c ("block: check queue's
limits.discard_granularity in __blkdev_issue_discard()"), a "Fixes:" tag
is also added for the commit to make sure people won't miss this patch
after applying the change of __blkdev_issue_discard().
Fixes: e056a1b5b6 ("mmc: queue: let host controllers specify maximum discard timeout")
Fixes: b35fd7422c ("block: check queue's limits.discard_granularity in __blkdev_issue_discard()").
Reported-and-tested-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Coly Li <colyli@suse.de>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20201002013852.51968-1-colyli@suse.de
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The error handling introduced by commit:
2ed6edd33a ("perf: Add cond_resched() to task_function_call()")
looses any return value from smp_call_function_single() that is not
{0, -EINVAL}. This is a problem because it will return -EXNIO when the
target CPU is offline. Worse, in that case it'll turn into an infinite
loop.
Fixes: 2ed6edd33a ("perf: Add cond_resched() to task_function_call()")
Reported-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Barret Rhoden <brho@google.com>
Tested-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Link: https://lkml.kernel.org/r/20200827064732.20860-1-kjain@linux.ibm.com
-----BEGIN PGP SIGNATURE-----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=THH6
-----END PGP SIGNATURE-----
Merge tag 'block5.9-2020-10-08' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few fixes that should go into this release:
- NVMe controller error path reference fix (Chaitanya)
- Fix regression with IBM partitions on non-dasd devices (Christoph)
- Fix a missing clear in the compat CDROM packet structure (Peilin)"
* tag 'block5.9-2020-10-08' of git://git.kernel.dk/linux-block:
partitions/ibm: fix non-DASD devices
nvme-core: put ctrl ref when module ref get fail
block/scsi-ioctl: Fix kernel-infoleak in scsi_put_cdrom_generic_arg()
Looks like the I2C tunnel implementation from Chromebook's
embedded controller does not handle PEC correctly. Fix this
by disabling PEC for batteries behind those I2C tunnels as
a workaround.
Note, that some Chromebooks actually have been reported to
have working PEC support (with I2C tunnel). Since the problem
has not yet been fully understood this simply reverts all
Chromebooks to not use PEC for now.
Reported-by: "Milan P. Stanić" <mps@arvanta.net>
Reported-by: Vicente Bergas <vicencb@gmail.com>
CC: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Fixes: 7222bd603d ("power: supply: sbs-battery: add PEC support")
Tested-by: Vicente Bergas <vicencb@gmail.com>
Tested-by: "Milan P. Stanić" <mps@arvanta.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Some last minute fixes. The last two of them haven't been in next but
they do seem kind of obvious, very small and safe, fix bugs reported in
the field, and they are both in a new mlx5 vdpa driver, so it's not like
we can introduce regressions.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-----BEGIN PGP SIGNATURE-----
iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAl9/cWEPHG1zdEByZWRo
YXQuY29tAAoJECgfDbjSjVRpaPoH/2b+Hc0UvQPvAas1uWC022bV/VpfiW0+OZaT
IsP88s9IInjWUoBb7Rqkhi3jnZYs9p7W59AV9cNJ5g6vPxcxrJAfgeo9R4bq6rD9
LqIAxHRRwPEnYddtFAv/XnX4YuTS+cJFwFJLWGXXdySA5/pgFqc9qDXjNLFzxq7X
8pI7qbW04e9eS3i8vlZwXNHpHQ7DMcpgewR7XO1Lhqh4sHWfusKSEVDrOM7v/0ru
yMtwKA5X8vRZQTIoaLamRWIm/qLWIi/Wcor6APhRG0Hn9yzS21JRnGDs8iKRSjjx
ecBNatgGPrmbO7yCfyh4el0GgrYhxAk/w2H3p/aXQJu+sGXL8nk=
=y/Tb
-----END PGP SIGNATURE-----
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull vhost fixes from Michael Tsirkin:
"Some last minute vhost,vdpa fixes.
The last two of them haven't been in next but they do seem kind of
obvious, very small and safe, fix bugs reported in the field, and they
are both in a new mlx5 vdpa driver, so it's not like we can introduce
regressions"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vdpa/mlx5: Fix dependency on MLX5_CORE
vdpa/mlx5: should keep avail_index despite device status
vhost-vdpa: fix page pinning leakage in error path
vhost-vdpa: fix vhost_vdpa_map() on error condition
vhost: Don't call log_access_ok() when using IOTLB
vhost: Use vhost_get_used_size() in vhost_vring_set_addr()
vhost: Don't call access_ok() when using IOTLB
vhost vdpa: fix vhost_vdpa_open error handling
[Why & How]
change abm config init interface to support multiple ABMs.
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Chris Park <Chris.Park@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Pull networking fixes from Jakub Kicinski:
"One more set of fixes from the networking tree:
- add missing input validation in nl80211_del_key(), preventing
out-of-bounds access
- last minute fix / improvement of a MRP netlink (uAPI) interface
introduced in 5.9 (current) release
- fix "unresolved symbol" build error under CONFIG_NET w/o
CONFIG_INET due to missing tcp_timewait_sock and inet_timewait_sock
BTF.
- fix 32 bit sub-register bounds tracking in the bpf verifier for OR
case
- tcp: fix receive window update in tcp_add_backlog()
- openvswitch: handle DNAT tuple collision in conntrack-related code
- r8169: wait for potential PHY reset to finish after applying a FW
file, avoiding unexpected PHY behaviour and failures later on
- mscc: fix tail dropping watermarks for Ocelot switches
- avoid use-after-free in macsec code after a call to the GRO layer
- avoid use-after-free in sctp error paths
- add a device id for Cellient MPL200 WWAN card
- rxrpc fixes:
- fix the xdr encoding of the contents read from an rxrpc key
- fix a BUG() for a unsupported encoding type.
- fix missing _bh lock annotations.
- fix acceptance handling for an incoming call where the incoming
call is encrypted.
- the server token keyring isn't network namespaced - it belongs
to the server, so there's no need. Namespacing it means that
request_key() fails to find it.
- fix a leak of the server keyring"
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (21 commits)
net: usb: qmi_wwan: add Cellient MPL200 card
macsec: avoid use-after-free in macsec_handle_frame()
r8169: consider that PHY reset may still be in progress after applying firmware
openvswitch: handle DNAT tuple collision
sctp: fix sctp_auth_init_hmacs() error path
bridge: Netlink interface fix.
net: wireless: nl80211: fix out-of-bounds access in nl80211_del_key()
bpf: Fix scalar32_min_max_or bounds tracking
tcp: fix receive window update in tcp_add_backlog()
net: usb: rtl8150: set random MAC address when set_ethernet_addr() fails
mptcp: more DATA FIN fixes
net: mscc: ocelot: warn when encoding an out-of-bounds watermark value
net: mscc: ocelot: divide watermark value by 60 when writing to SYS_ATOP
net: qrtr: ns: Fix the incorrect usage of rcu_read_lock()
rxrpc: Fix server keyring leak
rxrpc: The server keyring isn't network-namespaced
rxrpc: Fix accept on a connection that need securing
rxrpc: Fix some missing _bh annotations on locking conn->state_lock
rxrpc: Downgrade the BUG() for unsupported token type in rxrpc_read()
rxrpc: Fix rxkad token xdr encoding
...
