We use cifs_tcp_ses_lock to protect a lot of things.
Not only does it protect the lists of connections, sessions,
tree connects, open file lists, etc., we also use it to
protect some fields in each of it's entries.
In this case, cifs_mark_ses_for_reconnect takes the
cifs_tcp_ses_lock to traverse the lists, and then calls
cifs_update_iface. However, that can end up calling
cifs_put_tcp_session, which picks up the same lock again.
Avoid this by taking a ref for the session, drop the lock,
and then call update iface.
Also, in cifs_update_iface, avoid nested locking of iface_lock
and chan_lock, as much as possible. When unavoidable, we need
to pick iface_lock first.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Currently, we only query the server for network interfaces
information at the time of mount, and never afterwards.
This can be a problem, especially for services like Azure,
where the IP address of the channel endpoints can change
over time.
With this change, we schedule a 600s polling of this info
from the server for each tree connect.
An alternative for periodic polling was to do this only at
the time of reconnect. But this could delay the reconnect
time slightly. Also, there are some challenges w.r.t how
we have cifs_reconnect implemented today.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Going forward, the plan is to periodically query the server
for it's interfaces (when multichannel is enabled).
This change allows checking for inactive interfaces during
reconnect, and reconnect to a new interface if necessary.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
A server's published interface list can change over time, and needs
to be updated. We've storing iface_list as a simple array, which
makes it difficult to manipulate an existing list.
With this change, iface_list is modified into a linked list of
interfaces, which is kept sorted by speed.
Also added a reference counter for an iface entry, so that each
channel can maintain a backpointer to the iface and drop it
easily when needed.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Some servers do not allow null netname contexts, which would cause
multichannel to revert to single channel when mounting to some
servers (e.g. Azure xSMB). The previous patch fixed that by avoiding
incorrectly sending the netname context when there would be a null
hostname sent in the netname context, while this patch fixes the null
hostname for the secondary channel by using the hostname of the
primary channel for the secondary channel.
Fixes: 4c14d7043f ("cifs: populate empty hostnames for extra channels")
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Some servers do not allow null netname contexts, which would cause
multichannel to revert to single channel when mounting to some
servers (e.g. Azure xSMB).
Fixes: 4c14d7043f ("cifs: populate empty hostnames for extra channels")
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
- Make RESERVE_BRK() work again with older binutils. The recent
'simplification' broke that.
- Make early #VE handling increment RIP when successful.
- Make the #VE code consistent vs. the RIP adjustments and add comments.
- Handle load_unaligned_zeropad() across page boundaries correctly in #VE
when the second page is shared.
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Merge tag 'x86-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
- Make RESERVE_BRK() work again with older binutils. The recent
'simplification' broke that.
- Make early #VE handling increment RIP when successful.
- Make the #VE code consistent vs. the RIP adjustments and add
comments.
- Handle load_unaligned_zeropad() across page boundaries correctly in
#VE when the second page is shared.
* tag 'x86-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tdx: Handle load_unaligned_zeropad() page-cross to a shared page
x86/tdx: Clarify RIP adjustments in #VE handler
x86/tdx: Fix early #VE handling
x86/mm: Fix RESERVE_BRK() for older binutils
- Remove obsolete CONFIG_X86_SMAP reference from objtool
- Fix overlapping text section failures in faddr2line for real
- Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it
with finegrained annotations so objtool can validate that code
correctly.
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Merge tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull build tooling updates from Thomas Gleixner:
- Remove obsolete CONFIG_X86_SMAP reference from objtool
- Fix overlapping text section failures in faddr2line for real
- Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it
with finegrained annotations so objtool can validate that code
correctly.
* tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ftrace: Remove OBJECT_FILES_NON_STANDARD usage
faddr2line: Fix overlapping text section failures, the sequel
objtool: Fix obsolete reference to CONFIG_X86_SMAP
balance_push(). sched_setscheduler() spliced the balance callbacks accross
a lock break which makes an interleaving schedule() observe an empty list.
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Merge tag 'sched-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"A single scheduler fix plugging a race between sched_setscheduler()
and balance_push().
sched_setscheduler() spliced the balance callbacks accross a lock
break which makes it possible for an interleaving schedule() to
observe an empty list"
* tag 'sched-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix balance_push() vs __sched_setscheduler()
worked until prandom_u32() was switched to the real random generator, which
takes a spinlock for extraction, which does not work on RT when invoked
from atomic contexts. lockdep has no requirement for real random numbers
and it turns out sched_clock() is good enough to create the cookie. That
works everywhere and is faster.
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Merge tag 'locking-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull lockdep fix from Thomas Gleixner:
"A RT fix for lockdep.
lockdep invokes prandom_u32() to create cookies. This worked until
prandom_u32() was switched to the real random generator, which takes a
spinlock for extraction, which does not work on RT when invoked from
atomic contexts.
lockdep has no requirement for real random numbers and it turns out
sched_clock() is good enough to create the cookie. That works
everywhere and is faster"
* tag 'locking-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/lockdep: Use sched_clock() for random numbers
Here are some small char/misc driver fixes for 5.19-rc3 that resolve
some reported issues.
They include:
- mei driver fixes
- comedi driver fix
- rtsx build warning fix
- fsl-mc-bus driver fix
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.19-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes for real from Greg KH:
"Let's tag the proper branch this time...
Here are some small char/misc driver fixes for 5.19-rc3 that resolve
some reported issues.
They include:
- mei driver fixes
- comedi driver fix
- rtsx build warning fix
- fsl-mc-bus driver fix
All of these have been in linux-next for a while with no reported
issues"
This is what the merge in commit f0ec9c65a8 _should_ have merged, but
Greg fat-fingered the pull request and I got some small changes from
linux-next instead there. Credit to Nathan Chancellor for eagle-eyes.
Link: https://lore.kernel.org/all/Yqywy+Md2AfGDu8v@dev-arch.thelio-3990X/
* tag 'char-misc-5.19-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()
mei: me: add raptor lake point S DID
mei: hbm: drop capability response on early shutdown
mei: me: set internal pg flag to off on hardware reset
misc: rtsx: Fix clang -Wsometimes-uninitialized in rts5261_init_from_hw()
comedi: vmk80xx: fix expression for tx buffer size
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Merge tag 'i2c-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"MAINTAINERS rectifications and a few minor driver fixes"
* tag 'i2c-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: mediatek: Fix an error handling path in mtk_i2c_probe()
i2c: designware: Use standard optional ref clock implementation
MAINTAINERS: core DT include belongs to core
MAINTAINERS: add include/dt-bindings/i2c to I2C SUBSYSTEM HOST DRIVERS
i2c: npcm7xx: Add check for platform_driver_register
MAINTAINERS: Update Synopsys DesignWare I2C to Supported
- Fix a bug where inode flag changes would accidentally drop nrext64.
- Fix a race condition when toggling LARP mode.
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Merge tag 'xfs-5.19-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"There's not a whole lot this time around (I'm still on vacation) but
here are some important fixes for new features merged in -rc1:
- Fix a bug where inode flag changes would accidentally drop nrext64
- Fix a race condition when toggling LARP mode"
* tag 'xfs-5.19-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: preserve DIFLAG2_NREXT64 when setting other inode attributes
xfs: fix variable state usage
xfs: fix TOCTOU race involving the new logged xattrs control knob
or error injection. Also fix up how test_dummy_encryption mount
option is handled for the new mount API. Finally, fix/cleanup a
number of comments and ext4 Documentation files.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Fix a variety of bugs, many of which were found by folks using fuzzing
or error injection.
Also fix up how test_dummy_encryption mount option is handled for the
new mount API.
Finally, fix/cleanup a number of comments and ext4 Documentation
files"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix a doubled word "need" in a comment
ext4: add reserved GDT blocks check
ext4: make variable "count" signed
ext4: correct the judgment of BUG in ext4_mb_normalize_request
ext4: fix bug_on ext4_mb_use_inode_pa
ext4: fix up test_dummy_encryption handling for new mount API
ext4: use kmemdup() to replace kmalloc + memcpy
ext4: fix super block checksum incorrect after mount
ext4: improve write performance with disabled delalloc
ext4: fix warning when submitting superblock in ext4_commit_super()
ext4, doc: remove unnecessary escaping
ext4: fix incorrect comment in ext4_bio_write_page()
fs: fix jbd2_journal_try_to_free_buffers() kernel-doc comment
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Merge tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs client fixes from Steve French:
"Two cifs debugging improvements - one found to deal with debugging a
multichannel problem and one for a recent fallocate issue
This does include the two larger multichannel reconnect (dynamically
adjusting interfaces on reconnect) patches, because we recently found
an additional problem with multichannel to one server type that I want
to include at the same time"
* tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: when a channel is not found for server, log its connection id
smb3: add trace point for SMB2_set_eof
We capture a NULL pointer issue when resizing a corrupt ext4 image which
is freshly clear resize_inode feature (not run e2fsck). It could be
simply reproduced by following steps. The problem is because of the
resize_inode feature was cleared, and it will convert the filesystem to
meta_bg mode in ext4_resize_fs(), but the es->s_reserved_gdt_blocks was
not reduced to zero, so could we mistakenly call reserve_backup_gdb()
and passing an uninitialized resize_inode to it when adding new group
descriptors.
mkfs.ext4 /dev/sda 3G
tune2fs -O ^resize_inode /dev/sda #forget to run requested e2fsck
mount /dev/sda /mnt
resize2fs /dev/sda 8G
========
BUG: kernel NULL pointer dereference, address: 0000000000000028
CPU: 19 PID: 3243 Comm: resize2fs Not tainted 5.18.0-rc7-00001-gfde086c5ebfd #748
...
RIP: 0010:ext4_flex_group_add+0xe08/0x2570
...
Call Trace:
<TASK>
ext4_resize_fs+0xbec/0x1660
__ext4_ioctl+0x1749/0x24e0
ext4_ioctl+0x12/0x20
__x64_sys_ioctl+0xa6/0x110
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2dd739617b
========
The fix is simple, add a check in ext4_resize_begin() to make sure that
the es->s_reserved_gdt_blocks is zero when the resize_inode feature is
disabled.
Cc: stable@kernel.org
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220601092717.763694-1-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Since dx_make_map() may return -EFSCORRUPTED now, so change "count" to
be a signed integer so we can correctly check for an error code returned
by dx_make_map().
Fixes: 46c116b920 ("ext4: verify dir block before splitting it")
Cc: stable@kernel.org
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20220530100047.537598-1-dingxiang@cmss.chinamobile.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
ext4_mb_normalize_request() can move logical start of allocated blocks
to reduce fragmentation and better utilize preallocation. However logical
block requested as a start of allocation (ac->ac_o_ex.fe_logical) should
always be covered by allocated blocks so we should check that by
modifying and to or in the assertion.
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220528110017.354175-3-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Hulk Robot reported a BUG_ON:
==================================================================
kernel BUG at fs/ext4/mballoc.c:3211!
[...]
RIP: 0010:ext4_mb_mark_diskspace_used.cold+0x85/0x136f
[...]
Call Trace:
ext4_mb_new_blocks+0x9df/0x5d30
ext4_ext_map_blocks+0x1803/0x4d80
ext4_map_blocks+0x3a4/0x1a10
ext4_writepages+0x126d/0x2c30
do_writepages+0x7f/0x1b0
__filemap_fdatawrite_range+0x285/0x3b0
file_write_and_wait_range+0xb1/0x140
ext4_sync_file+0x1aa/0xca0
vfs_fsync_range+0xfb/0x260
do_fsync+0x48/0xa0
[...]
==================================================================
Above issue may happen as follows:
-------------------------------------
do_fsync
vfs_fsync_range
ext4_sync_file
file_write_and_wait_range
__filemap_fdatawrite_range
do_writepages
ext4_writepages
mpage_map_and_submit_extent
mpage_map_one_extent
ext4_map_blocks
ext4_mb_new_blocks
ext4_mb_normalize_request
>>> start + size <= ac->ac_o_ex.fe_logical
ext4_mb_regular_allocator
ext4_mb_simple_scan_group
ext4_mb_use_best_found
ext4_mb_new_preallocation
ext4_mb_new_inode_pa
ext4_mb_use_inode_pa
>>> set ac->ac_b_ex.fe_len <= 0
ext4_mb_mark_diskspace_used
>>> BUG_ON(ac->ac_b_ex.fe_len <= 0);
we can easily reproduce this problem with the following commands:
`fallocate -l100M disk`
`mkfs.ext4 -b 1024 -g 256 disk`
`mount disk /mnt`
`fsstress -d /mnt -l 0 -n 1000 -p 1`
The size must be smaller than or equal to EXT4_BLOCKS_PER_GROUP.
Therefore, "start + size <= ac->ac_o_ex.fe_logical" may occur
when the size is truncated. So start should be the start position of
the group where ac_o_ex.fe_logical is located after alignment.
In addition, when the value of fe_logical or EXT4_BLOCKS_PER_GROUP
is very large, the value calculated by start_off is more accurate.
Cc: stable@kernel.org
Fixes: cd648b8a8f ("ext4: trim allocation requests to group size")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220528110017.354175-2-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Since ext4 was converted to the new mount API, the test_dummy_encryption
mount option isn't being handled entirely correctly, because the needed
fscrypt_set_test_dummy_encryption() helper function combines
parsing/checking/applying into one function. That doesn't work well
with the new mount API, which split these into separate steps.
This was sort of okay anyway, due to the parsing logic that was copied
from fscrypt_set_test_dummy_encryption() into ext4_parse_param(),
combined with an additional check in ext4_check_test_dummy_encryption().
However, these overlooked the case of changing the value of
test_dummy_encryption on remount, which isn't allowed but ext4 wasn't
detecting until ext4_apply_options() when it's too late to fail.
Another bug is that if test_dummy_encryption was specified multiple
times with an argument, memory was leaked.
Fix this up properly by using the new helper functions that allow
splitting up the parse/check/apply steps for test_dummy_encryption.
Fixes: cebe85d570 ("ext4: switch to the new mount api")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20220526040412.173025-1-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
We got issue as follows:
[home]# mount /dev/sda test
EXT4-fs (sda): warning: mounting fs with errors, running e2fsck is recommended
[home]# dmesg
EXT4-fs (sda): warning: mounting fs with errors, running e2fsck is recommended
EXT4-fs (sda): Errors on filesystem, clearing orphan list.
EXT4-fs (sda): recovery complete
EXT4-fs (sda): mounted filesystem with ordered data mode. Quota mode: none.
[home]# debugfs /dev/sda
debugfs 1.46.5 (30-Dec-2021)
Checksum errors in superblock! Retrying...
Reason is ext4_orphan_cleanup will reset ‘s_last_orphan’ but not update
super block checksum.
To solve above issue, defer update super block checksum after
ext4_orphan_cleanup.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Cc: stable@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220525012904.1604737-1-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
cifs_ses_get_chan_index gets the index for a given server pointer.
When a match is not found, we warn about a possible bug.
However, printing details about the non-matching server could be
more useful to debug here.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
load_unaligned_zeropad() can lead to unwanted loads across page boundaries.
The unwanted loads are typically harmless. But, they might be made to
totally unrelated or even unmapped memory. load_unaligned_zeropad()
relies on exception fixup (#PF, #GP and now #VE) to recover from these
unwanted loads.
In TDX guests, the second page can be shared page and a VMM may configure
it to trigger #VE.
The kernel assumes that #VE on a shared page is an MMIO access and tries to
decode instruction to handle it. In case of load_unaligned_zeropad() it
may result in confusion as it is not MMIO access.
Fix it by detecting split page MMIO accesses and failing them.
load_unaligned_zeropad() will recover using exception fixups.
The issue was discovered by analysis and reproduced artificially. It was
not triggered during testing.
[ dhansen: fix up changelogs and comments for grammar and clarity,
plus incorporate Kirill's off-by-one fix]
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/20220614120135.14812-4-kirill.shutemov@linux.intel.com
- Bugfixes:
- Add FMODE_CAN_ODIRECT support to NFSv4 so opens don't fail
- Fix trunking detection & cl_max_connect setting
- Avoid pnfs_update_layout() livelocks
- Don't keep retrying pNFS if the server replies with NFS4ERR_UNAVAILABLE
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Merge tag 'nfs-for-5.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client fixes from Anna Schumaker:
- Add FMODE_CAN_ODIRECT support to NFSv4 so opens don't fail
- Fix trunking detection & cl_max_connect setting
- Avoid pnfs_update_layout() livelocks
- Don't keep retrying pNFS if the server replies with NFS4ERR_UNAVAILABLE
* tag 'nfs-for-5.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
NFSv4: Add FMODE_CAN_ODIRECT after successful open of a NFS4.x file
sunrpc: set cl_max_connect when cloning an rpc_clnt
pNFS: Avoid a live lock condition in pnfs_update_layout()
pNFS: Don't keep retrying if the server replied NFS4ERR_LAYOUTUNAVAILABLE
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Merge tag 'pci-v5.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci fix from Bjorn Helgaas:
"Revert clipping of PCI host bridge windows to avoid E820 regions,
which broke several machines by forcing unnecessary BAR reassignments
(Hans de Goede)"
* tag 'pci-v5.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
x86/PCI: Revert "x86/PCI: Clip only host bridge windows for E820 regions"
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Merge tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk fixes from Petr Mladek:
"Make the global console_sem available for CPU that is handling panic()
or shutdown.
This is an old problem when an existing console lock owner might block
console output, but it became more visible with the kthreads"
* tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: Wait for the global console lock when the system is going down
printk: Block console kthreads when direct printing will be required
This reverts commit 4c5e242d3e.
Prior to 4c5e242d3e ("x86/PCI: Clip only host bridge windows for E820
regions"), E820 regions did not affect PCI host bridge windows. We only
looked at E820 regions and avoided them when allocating new MMIO space.
If firmware PCI bridge window and BAR assignments used E820 regions, we
left them alone.
After 4c5e242d3e, we removed E820 regions from the PCI host bridge
windows before looking at BARs, so firmware assignments in E820 regions
looked like errors, and we moved things around to fit in the space left
(if any) after removing the E820 regions. This unnecessary BAR
reassignment broke several machines.
Guilherme reported that Steam Deck fails to boot after 4c5e242d3e. We
clipped the window that contained most 32-bit BARs:
BIOS-e820: [mem 0x00000000a0000000-0x00000000a00fffff] reserved
acpi PNP0A08:00: clipped [mem 0x80000000-0xf7ffffff window] to [mem 0xa0100000-0xf7ffffff window] for e820 entry [mem 0xa0000000-0xa00fffff]
which forced us to reassign all those BARs, for example, this NVMe BAR:
pci 0000:00:01.2: PCI bridge to [bus 01]
pci 0000:00:01.2: bridge window [mem 0x80600000-0x806fffff]
pci 0000:01:00.0: BAR 0: [mem 0x80600000-0x80603fff 64bit]
pci 0000:00:01.2: can't claim window [mem 0x80600000-0x806fffff]: no compatible bridge window
pci 0000:01:00.0: can't claim BAR 0 [mem 0x80600000-0x80603fff 64bit]: no compatible bridge window
pci 0000:00:01.2: bridge window: assigned [mem 0xa0100000-0xa01fffff]
pci 0000:01:00.0: BAR 0: assigned [mem 0xa0100000-0xa0103fff 64bit]
All the reassignments were successful, so the devices should have been
functional at the new addresses, but some were not.
Andy reported a similar failure on an Intel MID platform. Benjamin
reported a similar failure on a VMWare Fusion VM.
Note: this is not a clean revert; this revert keeps the later change to
make the clipping dependent on a new pci_use_e820 bool, moving the checking
of this bool to arch_remove_reservations().
[bhelgaas: commit log, add more reporters and testers]
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216109
Reported-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reported-by: Benjamin Coddington <bcodding@redhat.com>
Reported-by: Jongman Heo <jongman.heo@gmail.com>
Fixes: 4c5e242d3e ("x86/PCI: Clip only host bridge windows for E820 regions")
Link: https://lore.kernel.org/r/20220612144325.85366-1-hdegoede@redhat.com
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
- Revert the moving of the jump labels initialisation before
setup_machine_fdt(). The bug was fixed in drivers/char/random.c.
- Ftrace fixes: branch range check and consistent handling of PLTs.
- Clean rather than invalidate FROM_DEVICE buffers at start of DMA
transfer (safer if such buffer is mapped in user space). A cache
invalidation is done already at the end of the transfer.
- A couple of clean-ups (unexport symbol, remove unused label).
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Revert the moving of the jump labels initialisation before
setup_machine_fdt(). The bug was fixed in drivers/char/random.c.
- Ftrace fixes: branch range check and consistent handling of PLTs.
- Clean rather than invalidate FROM_DEVICE buffers at start of DMA
transfer (safer if such buffer is mapped in user space). A cache
invalidation is done already at the end of the transfer.
- A couple of clean-ups (unexport symbol, remove unused label).
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer
arm64/cpufeature: Unexport set_cpu_feature()
arm64: ftrace: remove redundant label
arm64: ftrace: consistently handle PLTs.
arm64: ftrace: fix branch range checks
Revert "arm64: Initialize jump labels before setup_machine_fdt()"
* A fix for the PolarFire SOC's device tree.
* A handful of fixes for the recently added Svpmbt support.
* An improvement to the Kconfig text for Svpbmt.
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Merge tag 'riscv-for-linus-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix for the PolarFire SOC's device tree
- A handful of fixes for the recently added Svpmbt support
- An improvement to the Kconfig text for Svpbmt
* tag 'riscv-for-linus-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Improve description for RISCV_ISA_SVPBMT Kconfig symbol
riscv: drop cpufeature_apply_feature tracking variable
riscv: fix dependency for t-head errata
riscv: dts: microchip: re-add pdma to mpfs device tree
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Merge tag 'block-5.19-2022-06-16' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request from Christoph
- Quirks, quirks, quirks to work around buggy consumer grade
devices (Keith Bush, Ning Wang, Stefan Reiter, Rasheed Hsueh)
- Better kernel messages for devices that need quirking (Keith
Bush)
- Make a kernel message more useful (Thomas Weißschuh)
- MD pull request from Song, with a few fixes
- blk-mq sysfs locking fixes (Ming)
- BFQ stats fix (Bart)
- blk-mq offline queue fix (Bart)
- blk-mq flush request tag fix (Ming)
* tag 'block-5.19-2022-06-16' of git://git.kernel.dk/linux-block:
block/bfq: Enable I/O statistics
blk-mq: don't clear flush_rq from tags->rqs[]
blk-mq: avoid to touch q->elevator without any protection
blk-mq: protect q->elevator by ->sysfs_lock in blk_mq_elv_switch_none
block: Fix handling of offline queues in blk_mq_alloc_request_hctx()
md/raid5-ppl: Fix argument order in bio_alloc_bioset()
Revert "md: don't unregister sync_thread with reconfig_mutex held"
nvme-pci: disable write zeros support on UMIC and Samsung SSDs
nvme-pci: avoid the deepest sleep state on ZHITAI TiPro7000 SSDs
nvme-pci: sk hynix p31 has bogus namespace ids
nvme-pci: smi has bogus namespace ids
nvme-pci: phison e12 has bogus namespace ids
nvme-pci: add NVME_QUIRK_BOGUS_NID for ADATA XPG GAMMIX S50
nvme-pci: add trouble shooting steps for timeouts
nvme: add bug report info for global duplicate id
nvme: add device name to warning in uuid_show()
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Merge tag 'io_uring-5.19-2022-06-16' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"Bigger than usual at this time, both because we missed -rc2, but also
because of some reverts that we chose to do. In detail:
- Adjust mapped buffer API while we still can (Dylan)
- Mapped buffer fixes (Dylan, Hao, Pavel, me)
- Fix for uring_cmd wrong API usage for task_work (Dylan)
- Fix for bug introduced in fixed file closing (Hao)
- Fix race in buffer/file resource handling (Pavel)
- Revert the NOP support for CQE32 and buffer selection that was
brought up during the merge window (Pavel)
- Remove IORING_CLOSE_FD_AND_FILE_SLOT introduced in this merge
window. The API needs further refining, so just yank it for now and
we'll revisit for a later kernel.
- Series cleaning up the CQE32 support added in this merge window,
making it more integrated rather than sitting on the side (Pavel)"
* tag 'io_uring-5.19-2022-06-16' of git://git.kernel.dk/linux-block: (21 commits)
io_uring: recycle provided buffer if we punt to io-wq
io_uring: do not use prio task_work_add in uring_cmd
io_uring: commit non-pollable provided mapped buffers upfront
io_uring: make io_fill_cqe_aux honour CQE32
io_uring: remove __io_fill_cqe() helper
io_uring: fix ->extra{1,2} misuse
io_uring: fill extra big cqe fields from req
io_uring: unite fill_cqe and the 32B version
io_uring: get rid of __io_fill_cqe{32}_req()
io_uring: remove IORING_CLOSE_FD_AND_FILE_SLOT
Revert "io_uring: add buffer selection support to IORING_OP_NOP"
Revert "io_uring: support CQE32 for nop operation"
io_uring: limit size of provided buffer ring
io_uring: fix types in provided buffer ring
io_uring: fix index calculation
io_uring: fix double unlock for pbuf select
io_uring: kbuf: fix bug of not consuming ring buffer in partial io case
io_uring: openclose: fix bug of closing wrong fixed file
io_uring: fix not locked access to fixed buf table
io_uring: fix races with buffer table unregister
...
Invalidating the buffer memory in arch_sync_dma_for_device() for
FROM_DEVICE transfers
When using the streaming DMA API to map a buffer prior to inbound
non-coherent DMA (i.e. DMA_FROM_DEVICE), we invalidate any dirty CPU
cachelines so that they will not be written back during the transfer and
corrupt the buffer contents written by the DMA. This, however, poses two
potential problems:
(1) If the DMA transfer does not write to every byte in the buffer,
then the unwritten bytes will contain stale data once the transfer
has completed.
(2) If the buffer has a virtual alias in userspace, then stale data
may be visible via this alias during the period between performing
the cache invalidation and the DMA writes landing in memory.
Address both of these issues by cleaning (aka writing-back) the dirty
lines in arch_sync_dma_for_device(DMA_FROM_DEVICE) instead of discarding
them using invalidation.
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220606152150.GA31568@willie-the-truck
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220610151228.4562-2-will@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Pull writeback and ext2 fixes from Jan Kara:
"A fix for writeback bug which prevented machines with kdevtmpfs from
booting and also one small ext2 bugfix in IO error handling"
* tag 'fs_for_v5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
init: Initialize noop_backing_dev_info early
ext2: fix fs corruption when trying to remove a non-empty directory with IO error
accounting for abnormal IO (e.g. discards, write zeroes, etc).
- Fix a use-after-free in DM core's dm_put_live_table_bio.
- Fix a race for REQ_NOWAIT bios being issued despite no support from
underlying DM targets (due to DM table reload at an "unlucky" time)
- Fix access beyond allocated bitmap in DM mirror's log.
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Merge tag 'for-5.19/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Fix a race in DM core's dm_start_io_acct that could result in double
accounting for abnormal IO (e.g. discards, write zeroes, etc).
- Fix a use-after-free in DM core's dm_put_live_table_bio.
- Fix a race for REQ_NOWAIT bios being issued despite no support from
underlying DM targets (due to DM table reload at an "unlucky" time)
- Fix access beyond allocated bitmap in DM mirror's log.
* tag 'for-5.19/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm mirror log: round up region bitmap size to BITS_PER_LONG
dm: fix narrow race for REQ_NOWAIT bios being issued despite no support
dm: fix use-after-free in dm_put_live_table_bio
dm: fix race in dm_start_io_acct
* Add missing lock protection in occ driver
* Add missing comma in board name list in asus-ec-sensors driver
* Fix devicetree bindings for ti,tmp401
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Merge tag 'hwmon-for-v5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Add missing lock protection in occ driver
- Add missing comma in board name list in asus-ec-sensors driver
- Fix devicetree bindings for ti,tmp401
* tag 'hwmon-for-v5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (asus-ec-sensors) add missing comma in board name list.
hwmon: (occ) Lock mutex in shutdown to prevent race with occ_active
dt-bindings: hwmon: ti,tmp401: Drop 'items' from 'ti,n-factor' property
Here are some small char/misc driver fixes for 5.19-rc3 that resolve
some reported issues.
They include:
- mei driver fixes
- comedi driver fix
- rtsx build warning fix
- fsl-mc-bus driver fix
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char/misc driver fixes for 5.19-rc3 that resolve
some reported issues.
They include:
- mei driver fixes
- comedi driver fix
- rtsx build warning fix
- fsl-mc-bus driver fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
eeprom: at25: Split reads into chunks and cap write size
misc: atmel-ssc: Fix IRQ check in ssc_probe
char: lp: remove redundant initialization of err
Here are some small staging driver fixes for 5.19-rc3 that resolve
reported issues:
- remove visorbus.h which was forgotten in the -rc1 merge where
the code that used it was removed
- olpc_dcon: mark as broken to allow the DRM developers to
evolve the fbdev api properly without having to deal with this
obsolete driver. It will be removed soon if no one steps up
to adopt it and fix the issues with it.
- rtl8723bs driver fix
- r8188eu driver fix to resolve many reports of the driver being
broken with -rc1.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes for 5.19-rc3 that resolve
reported issues:
- remove visorbus.h which was forgotten in the -rc1 merge where the
code that used it was removed
- olpc_dcon: mark as broken to allow the DRM developers to evolve the
fbdev api properly without having to deal with this obsolete
driver. It will be removed soon if no one steps up to adopt it and
fix the issues with it.
- rtl8723bs driver fix
- r8188eu driver fix to resolve many reports of the driver being
broken with -rc1.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: Also remove the Unisys visorbus.h
staging: rtl8723bs: Allocate full pwep structure
staging: olpc_dcon: mark driver as broken
staging: r8188eu: Fix warning of array overflow in ioctl_linux.c
staging: r8188eu: fix rtw_alloc_hwxmits error detection for now
Here are some small tty and serial driver fixes for 5.19-rc3 to resolve
some reported problems:
- 8250 lsr read bugfix
- n_gsm line discipline allocation fix
- qcom serial driver fix for reported lockups that happened in
-rc1
- goldfish tty driver fix
All have been in linux-next for a while now with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are some small tty and serial driver fixes for 5.19-rc3 to
resolve some reported problems:
- 8250 lsr read bugfix
- n_gsm line discipline allocation fix
- qcom serial driver fix for reported lockups that happened in -rc1
- goldfish tty driver fix
All have been in linux-next for a while now with no reported issues"
* tag 'tty-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: 8250: Store to lsr_save_flags after lsr read
tty: goldfish: Fix free_irq() on remove
tty: serial: qcom-geni-serial: Implement start_rx callback
serial: core: Introduce callback for start_rx and do stop_rx in suspend only if this callback implementation is present.
tty: n_gsm: Debug output allocation must use GFP_ATOMIC
Here are some small USB driver fixes and new device ids for 5.19-rc3
They include:
- new usb-serial driver device ids
- usb gadget driver fixes for reported problems
- cdnsp driver fix
- dwc3 driver fixes for reported problems
- dwc3 driver fix for merge problem that I caused in 5.18
- xhci driver fixes
- dwc2 memory leak fix
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
"Here are some small USB driver fixes and new device ids for 5.19-rc3
They include:
- new usb-serial driver device ids
- usb gadget driver fixes for reported problems
- cdnsp driver fix
- dwc3 driver fixes for reported problems
- dwc3 driver fix for merge problem that I caused in 5.18
- xhci driver fixes
- dwc2 memory leak fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: gadget: f_fs: change ep->ep safe in ffs_epfile_io()
usb: gadget: f_fs: change ep->status safe in ffs_epfile_io()
xhci: Fix null pointer dereference in resume if xhci has only one roothub
USB: fixup for merge issue with "usb: dwc3: Don't switch OTG -> peripheral if extcon is present"
usb: cdnsp: Fixed setting last_trb incorrectly
usb: gadget: u_ether: fix regression in setting fixed MAC address
usb: gadget: lpc32xx_udc: Fix refcount leak in lpc32xx_udc_probe
usb: dwc2: Fix memory leak in dwc2_hcd_init
usb: dwc3: pci: Restore line lost in merge conflict resolution
usb: dwc3: gadget: Fix IN endpoint max packet size allocation
USB: serial: option: add support for Cinterion MV31 with new baseline
USB: serial: io_ti: add Agilent E5805A support
