Age | Commit message (Collapse) | Author | Files | Lines |
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Aneesh Kumar:
- Increase default stack size to 32KB for Book3S
Thanks to Michael Ellerman.
* tag 'powerpc-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: Increase default stack size to 32KB
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Add line breaks - inode_to_text() is now much easier to read.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bcachefs_format.h has gotten too big; let's do some organizing.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Add a field to bch_snapshot for creation time; this will be important
when we start exposing the snapshot tree to userspace.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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The "apply this compression method in the background" paths now use the
compression option if background_compression is not set; this means that
setting or changing the compression option will cause existing data to
be compressed accordingly in the background.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bcachefs btree nodes are big - typically 256k - and btree roots are
pinned in memory. As we're now up to 18 btrees, we now have significant
memory overhead in mostly empty btree roots.
And in the future we're going to start enforcing that certain btree node
boundaries exist, to solve lock contention issues - analagous to XFS's
AGIs.
Thus, we need to start allocating smaller btree node buffers when we
can. This patch changes code that refers to the filesystem constant
c->opts.btree_node_size to refer to the btree node buffer size -
btree_buf_bytes() - where appropriate.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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When I was testing mongodb over bcachefs with compression,
there is a lockdep warning when snapshotting mongodb data volume.
$ cat test.sh
prog=bcachefs
$prog subvolume create /mnt/data
$prog subvolume create /mnt/data/snapshots
while true;do
$prog subvolume snapshot /mnt/data /mnt/data/snapshots/$(date +%s)
sleep 1s
done
$ cat /etc/mongodb.conf
systemLog:
destination: file
logAppend: true
path: /mnt/data/mongod.log
storage:
dbPath: /mnt/data/
lockdep reports:
[ 3437.452330] ======================================================
[ 3437.452750] WARNING: possible circular locking dependency detected
[ 3437.453168] 6.7.0-rc7-custom+ #85 Tainted: G E
[ 3437.453562] ------------------------------------------------------
[ 3437.453981] bcachefs/35533 is trying to acquire lock:
[ 3437.454325] ffffa0a02b2b1418 (sb_writers#10){.+.+}-{0:0}, at: filename_create+0x62/0x190
[ 3437.454875]
but task is already holding lock:
[ 3437.455268] ffffa0a02b2b10e0 (&type->s_umount_key#48){.+.+}-{3:3}, at: bch2_fs_file_ioctl+0x232/0xc90 [bcachefs]
[ 3437.456009]
which lock already depends on the new lock.
[ 3437.456553]
the existing dependency chain (in reverse order) is:
[ 3437.457054]
-> #3 (&type->s_umount_key#48){.+.+}-{3:3}:
[ 3437.457507] down_read+0x3e/0x170
[ 3437.457772] bch2_fs_file_ioctl+0x232/0xc90 [bcachefs]
[ 3437.458206] __x64_sys_ioctl+0x93/0xd0
[ 3437.458498] do_syscall_64+0x42/0xf0
[ 3437.458779] entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.459155]
-> #2 (&c->snapshot_create_lock){++++}-{3:3}:
[ 3437.459615] down_read+0x3e/0x170
[ 3437.459878] bch2_truncate+0x82/0x110 [bcachefs]
[ 3437.460276] bchfs_truncate+0x254/0x3c0 [bcachefs]
[ 3437.460686] notify_change+0x1f1/0x4a0
[ 3437.461283] do_truncate+0x7f/0xd0
[ 3437.461555] path_openat+0xa57/0xce0
[ 3437.461836] do_filp_open+0xb4/0x160
[ 3437.462116] do_sys_openat2+0x91/0xc0
[ 3437.462402] __x64_sys_openat+0x53/0xa0
[ 3437.462701] do_syscall_64+0x42/0xf0
[ 3437.462982] entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.463359]
-> #1 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}:
[ 3437.463843] down_write+0x3b/0xc0
[ 3437.464223] bch2_write_iter+0x5b/0xcc0 [bcachefs]
[ 3437.464493] vfs_write+0x21b/0x4c0
[ 3437.464653] ksys_write+0x69/0xf0
[ 3437.464839] do_syscall_64+0x42/0xf0
[ 3437.465009] entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.465231]
-> #0 (sb_writers#10){.+.+}-{0:0}:
[ 3437.465471] __lock_acquire+0x1455/0x21b0
[ 3437.465656] lock_acquire+0xc6/0x2b0
[ 3437.465822] mnt_want_write+0x46/0x1a0
[ 3437.465996] filename_create+0x62/0x190
[ 3437.466175] user_path_create+0x2d/0x50
[ 3437.466352] bch2_fs_file_ioctl+0x2ec/0xc90 [bcachefs]
[ 3437.466617] __x64_sys_ioctl+0x93/0xd0
[ 3437.466791] do_syscall_64+0x42/0xf0
[ 3437.466957] entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.467180]
other info that might help us debug this:
[ 3437.469670] 2 locks held by bcachefs/35533:
other info that might help us debug this:
[ 3437.467507] Chain exists of:
sb_writers#10 --> &c->snapshot_create_lock --> &type->s_umount_key#48
[ 3437.467979] Possible unsafe locking scenario:
[ 3437.468223] CPU0 CPU1
[ 3437.468405] ---- ----
[ 3437.468585] rlock(&type->s_umount_key#48);
[ 3437.468758] lock(&c->snapshot_create_lock);
[ 3437.469030] lock(&type->s_umount_key#48);
[ 3437.469291] rlock(sb_writers#10);
[ 3437.469434]
*** DEADLOCK ***
[ 3437.469670] 2 locks held by bcachefs/35533:
[ 3437.469838] #0: ffffa0a02ce00a88 (&c->snapshot_create_lock){++++}-{3:3}, at: bch2_fs_file_ioctl+0x1e3/0xc90 [bcachefs]
[ 3437.470294] #1: ffffa0a02b2b10e0 (&type->s_umount_key#48){.+.+}-{3:3}, at: bch2_fs_file_ioctl+0x232/0xc90 [bcachefs]
[ 3437.470744]
stack backtrace:
[ 3437.470922] CPU: 7 PID: 35533 Comm: bcachefs Kdump: loaded Tainted: G E 6.7.0-rc7-custom+ #85
[ 3437.471313] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
[ 3437.471694] Call Trace:
[ 3437.471795] <TASK>
[ 3437.471884] dump_stack_lvl+0x57/0x90
[ 3437.472035] check_noncircular+0x132/0x150
[ 3437.472202] __lock_acquire+0x1455/0x21b0
[ 3437.472369] lock_acquire+0xc6/0x2b0
[ 3437.472518] ? filename_create+0x62/0x190
[ 3437.472683] ? lock_is_held_type+0x97/0x110
[ 3437.472856] mnt_want_write+0x46/0x1a0
[ 3437.473025] ? filename_create+0x62/0x190
[ 3437.473204] filename_create+0x62/0x190
[ 3437.473380] user_path_create+0x2d/0x50
[ 3437.473555] bch2_fs_file_ioctl+0x2ec/0xc90 [bcachefs]
[ 3437.473819] ? lock_acquire+0xc6/0x2b0
[ 3437.474002] ? __fget_files+0x2a/0x190
[ 3437.474195] ? __fget_files+0xbc/0x190
[ 3437.474380] ? lock_release+0xc5/0x270
[ 3437.474567] ? __x64_sys_ioctl+0x93/0xd0
[ 3437.474764] ? __pfx_bch2_fs_file_ioctl+0x10/0x10 [bcachefs]
[ 3437.475090] __x64_sys_ioctl+0x93/0xd0
[ 3437.475277] do_syscall_64+0x42/0xf0
[ 3437.475454] entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.475691] RIP: 0033:0x7f2743c313af
======================================================
In __bch2_ioctl_subvolume_create(), we grab s_umount unconditionally
and unlock it at the end of the function. There is a comment
"why do we need this lock?" about the lock coming from
commit 42d237320e98 ("bcachefs: Snapshot creation, deletion")
The reason is that __bch2_ioctl_subvolume_create() calls
sync_inodes_sb() which enforce locked s_umount to writeback all dirty
nodes before doing snapshot works.
Fix it by read locking s_umount for snapshotting only and unlocking
s_umount after sync_inodes_sb().
Signed-off-by: Su Yue <glass.su@suse.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bch_fs::snapshots is allocated by kvzalloc in __snapshot_t_mut.
It should be freed by kvfree not kfree.
Or umount will triger:
[ 406.829178 ] BUG: unable to handle page fault for address: ffffe7b487148008
[ 406.830676 ] #PF: supervisor read access in kernel mode
[ 406.831643 ] #PF: error_code(0x0000) - not-present page
[ 406.832487 ] PGD 0 P4D 0
[ 406.832898 ] Oops: 0000 [#1] PREEMPT SMP PTI
[ 406.833512 ] CPU: 2 PID: 1754 Comm: umount Kdump: loaded Tainted: G OE 6.7.0-rc7-custom+ #90
[ 406.834746 ] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
[ 406.835796 ] RIP: 0010:kfree+0x62/0x140
[ 406.836197 ] Code: 80 48 01 d8 0f 82 e9 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 78 9f 1f 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 56 9f 1f 01 <48> 8b 50 08 48 89 c7 f6 c2 01 0f 85 b0 00 00 00 66 90 48 8b 07 f6
[ 406.837810 ] RSP: 0018:ffffb9d641607e48 EFLAGS: 00010286
[ 406.838213 ] RAX: ffffe7b487148000 RBX: ffffb9d645200000 RCX: ffffb9d641607dc4
[ 406.838738 ] RDX: 000065bb00000000 RSI: ffffffffc0d88b84 RDI: ffffb9d645200000
[ 406.839217 ] RBP: ffff9a4625d00068 R08: 0000000000000001 R09: 0000000000000001
[ 406.839650 ] R10: 0000000000000001 R11: 000000000000001f R12: ffff9a4625d4da80
[ 406.840055 ] R13: ffff9a4625d00000 R14: ffffffffc0e2eb20 R15: 0000000000000000
[ 406.840451 ] FS: 00007f0a264ffb80(0000) GS:ffff9a4e2d500000(0000) knlGS:0000000000000000
[ 406.840851 ] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 406.841125 ] CR2: ffffe7b487148008 CR3: 000000018c4d2000 CR4: 00000000000006f0
[ 406.841464 ] Call Trace:
[ 406.841583 ] <TASK>
[ 406.841682 ] ? __die+0x1f/0x70
[ 406.841828 ] ? page_fault_oops+0x159/0x470
[ 406.842014 ] ? fixup_exception+0x22/0x310
[ 406.842198 ] ? exc_page_fault+0x1ed/0x200
[ 406.842382 ] ? asm_exc_page_fault+0x22/0x30
[ 406.842574 ] ? bch2_fs_release+0x54/0x280 [bcachefs]
[ 406.842842 ] ? kfree+0x62/0x140
[ 406.842988 ] ? kfree+0x104/0x140
[ 406.843138 ] bch2_fs_release+0x54/0x280 [bcachefs]
[ 406.843390 ] kobject_put+0xb7/0x170
[ 406.843552 ] deactivate_locked_super+0x2f/0xa0
[ 406.843756 ] cleanup_mnt+0xba/0x150
[ 406.843917 ] task_work_run+0x59/0xa0
[ 406.844083 ] exit_to_user_mode_prepare+0x197/0x1a0
[ 406.844302 ] syscall_exit_to_user_mode+0x16/0x40
[ 406.844510 ] do_syscall_64+0x4e/0xf0
[ 406.844675 ] entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 406.844907 ] RIP: 0033:0x7f0a2664e4fb
Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Fixes: 023f9ac9f70f bcachefs: Delete dio read alignment check
Reported-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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The variable tmp is being assigned a value but it isn't being
read afterwards. The assignment is redundant and so tmp can be
removed.
Cleans up clang scan build warning:
warning: Although the value stored to 'ret' is used in the enclosing
expression, the value is never actually read from 'ret'
[deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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drop_locks_do() should not be used in a fastpath without first trying
the do in nonblocking mode - the unlock and relock will cause excessive
transaction restarts and potentially livelocking with other threads that
are contending for the same locks.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Factor out bch2_journal_bufs_to_text(), and use it in the
journal_entry_full() tracepoint; when we can't get a journal reservation
we need to know the outstanding journal entry sizes to know if the
problem is due to excessive flushing.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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When issuing discards, we may need to flush the journal if there's too
many buckets that can't be discarded until a journal flush.
But the heuristic was bad; we should be comparing the number of buckets
that need to flushes against the number of free buckets, not the number
of buckets we saw.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Also print out the data_opts, so that we can see what specifically is
being done to an extent.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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This fixes a bug with rebalance IOs getting stuck with reads completed,
but writes never being issued.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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It appears this was accidentally deleted at some point - also, do a bit
of cleanup.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Drop t he loop in bch2_kthread_io_clock_wait(): this allows the code
that uses it to be woken up for other reasons, and fixes a bug where
rebalance wouldn't wake up when a scan was requested.
This raises the possibility of spurious wakeups, but callers should
always be able to handle that reasonably well.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Some (buggy!) compilers have issues with this.
Fixes: https://github.com/koverstreet/bcachefs/issues/625
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Pull header fix from Kent Overstreet:
"Just one small fixup for the RT build"
* tag 'header_cleanup-2024-01-20' of https://evilpiepirate.org/git/bcachefs:
spinlock: Fix failing build for PREEMPT_RT
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We don't have to take locks in any particular ordering - we'll make
forward progress just fine - but if we try to stick to an ordering, it
can help to avoid excessive would_deadlock transaction restarts.
This tweaks the reflink path to take extents btree locks in the right
order.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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The disk space accounting rewrite is splitting out accounting for each
replicas set - those are moving to btree keys, instead of percpu
counters.
This breaks bch2_trans_fs_usage_apply() up, splitting out the part we
will still need.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Split out base filesystem usage into its own type; prep work for
breaking up bch2_trans_fs_usage_apply().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bounds checking helper, since compression types are extensible
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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We need bounds checking since new versions may introduce new data types.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Add a new flag to be explicit about when we're running atomic triggers.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Previously, we added logging in the write path to ensure that any
unexpected errors getting reported to userspace have a log message; but
BCH_WRITE_ALLOC_NOWAIT is a special case, it's used for promotes where
errors are expected and not reported out to userspace - so we need to
silence those.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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The pointer dev_name can be modified by strseq(),
then causes the memleak:
unreferenced object 0xffff9d08a2916c80 (size 32):
comm "mount.bcachefs", pid 9090, jiffies 4295856224 (age 17.564s)
hex dump (first 32 bytes):
2f 64 65 76 2f 6d 61 70 70 65 72 2f 74 65 73 74 /dev/mapper/test
2d 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -0..............
backtrace:
[<00000000c5d3be7d>] __kmem_cache_alloc_node+0x1f3/0x2c0
[<0000000052215d26>] __kmalloc_node_track_caller+0x51/0x150
[<0000000069fea956>] kstrdup+0x32/0x60
[<000000000877fcf1>] bch2_split_devs+0x3f/0x150 [bcachefs]
[<000000007ee93204>] bch2_mount+0xcb/0x640 [bcachefs]
[<000000002dd1e04b>] legacy_get_tree+0x30/0x60
[<000000006afc31d3>] vfs_get_tree+0x28/0xf0
[<000000007b0c538e>] path_mount+0x475/0xb60
[<0000000092de5882>] __x64_sys_mount+0x105/0x140
[<0000000054fc05d8>] do_syscall_64+0x42/0xf0
[<00000000df584910>] entry_SYSCALL_64_after_hwframe+0x6e/0x76
Fix it by copy pointer dev_name at beginning and free the copied
pointer at end.
Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Pull smb client updates from Steve French:
"Various smb client fixes, including multichannel and for SMB3.1.1
POSIX extensions:
- debugging improvement (display start time for stats)
- two reparse point handling fixes
- various multichannel improvements and fixes
- SMB3.1.1 POSIX extensions open/create parsing fix
- retry (reconnect) improvement including new retrans mount parm, and
handling of two additional return codes that need to be retried on
- two minor cleanup patches and another to remove duplicate query
info code
- two documentation cleanup, and one reviewer email correction"
* tag 'v6.8-rc-part2-smb-client' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update iface_last_update on each query-and-update
cifs: handle servers that still advertise multichannel after disabling
cifs: new mount option called retrans
cifs: reschedule periodic query for server interfaces
smb: client: don't clobber ->i_rdev from cached reparse points
smb: client: get rid of smb311_posix_query_path_info()
smb: client: parse owner/group when creating reparse points
smb: client: fix parsing of SMB3.1.1 POSIX create context
cifs: update known bugs mentioned in kernel docs for cifs
cifs: new nt status codes from MS-SMB2
cifs: pick channel for tcon and tdis
cifs: open_cached_dir should not rely on primary channel
smb3: minor documentation updates
Update MAINTAINERS email address
cifs: minor comment cleanup
smb3: show beginning time for per share stats
cifs: remove redundant variable tcon_exist
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"New support:
- Loongson LS2X APB DMA controller
- sf-pdma: mpfs-pdma support
- Qualcomm X1E80100 GPI dma controller support
Updates:
- Xilinx XDMA updates to support interleaved DMA transfers
- TI PSIL threads for AM62P and J722S and cfg register regions
description
- axi-dmac Improving the cyclic DMA transfers
- Tegra Support dma-channel-mask property
- Remaining platform remove callback returning void conversions
Driver fixes for:
- Xilinx xdma driver operator precedence and initialization fix
- Excess kernel-doc warning fix in imx-sdma xilinx xdma drivers
- format-overflow warning fix for rz-dmac, sh usb dmac drivers
- 'output may be truncated' fix for shdma, fsl-qdma and dw-edma
drivers"
* tag 'dmaengine-fix-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (58 commits)
dmaengine: dw-edma: increase size of 'name' in debugfs code
dmaengine: fsl-qdma: increase size of 'irq_name'
dmaengine: shdma: increase size of 'dev_id'
dmaengine: xilinx: xdma: Fix kernel-doc warnings
dmaengine: usb-dmac: Avoid format-overflow warning
dmaengine: sh: rz-dmac: Avoid format-overflow warning
dmaengine: imx-sdma: fix Excess kernel-doc warnings
dmaengine: xilinx: xdma: Fix initialization location of desc in xdma_channel_isr()
dmaengine: xilinx: xdma: Fix operator precedence in xdma_prep_interleaved_dma()
dmaengine: xilinx: xdma: statify xdma_prep_interleaved_dma
dmaengine: xilinx: xdma: Workaround truncation compilation error
dmaengine: pl330: issue_pending waits until WFP state
dmaengine: xilinx: xdma: Implement interleaved DMA transfers
dmaengine: xilinx: xdma: Prepare the introduction of interleaved DMA transfers
dmaengine: xilinx: xdma: Add transfer error reporting
dmaengine: xilinx: xdma: Add error checking in xdma_channel_isr()
dmaengine: xilinx: xdma: Rework xdma_terminate_all()
dmaengine: xilinx: xdma: Ease dma_pool alignment requirements
dmaengine: xilinx: xdma: Add necessary macro definitions
dmaengine: xilinx: xdma: Get rid of unused code
...
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