[syzbot] [bcachefs?] INFO: task hung in journal_quiesce

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 6fbf71854e2d Merge tag 'perf-tools-fixes-for-v6.10-1-2024-..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=121a7784980000
kernel config: https://syzkaller.appspot.com/x/.config?x=62be2ac813b33670
dashboard link: https://syzkaller.appspot.com/bug?extid=1e1b380ef8d95b36f789
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13612784980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/eab66bf09e4e/disk-6fbf7185.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/232ac0545252/vmlinux-6fbf7185.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2820e679b0ee/bzImage-6fbf7185.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/1b9344a81d37/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1e1b38...@syzkaller.appspotmail.com

INFO: task kworker/1:5:5342 blocked for more than 143 seconds.
Not tainted 6.9.0-syzkaller-12400-g6fbf71854e2d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5 state:D stack:21792 pid:5342 tgid:5342 ppid:2 flags:0x00004000
Workqueue: events_long bch2_fs_read_only_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
journal_quiesce+0x205/0x2e0 fs/bcachefs/journal.c:474
bch2_fs_journal_stop+0x33b/0x520 fs/bcachefs/journal.c:1181
__bch2_fs_read_only+0x30c/0x430 fs/bcachefs/super.c:291
bch2_fs_read_only+0xb52/0x1210 fs/bcachefs/super.c:356
bch2_fs_read_only_work+0x2d/0x40 fs/bcachefs/super.c:393
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
INFO: task syz-executor.5:5431 blocked for more than 143 seconds.
Not tainted 6.9.0-syzkaller-12400-g6fbf71854e2d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:18512 pid:5431 tgid:5430 ppid:5255 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
__bch2_fs_stop+0xfd/0x540 fs/bcachefs/super.c:612
bch2_fs_stop fs/bcachefs/super.c:672 [inline]
bch2_fs_open+0xb4f/0xdf0 fs/bcachefs/super.c:2139
bch2_mount+0x71d/0x1310 fs/bcachefs/fs.c:1917
legacy_get_tree+0xf0/0x190 fs/fs_context.c:662
vfs_get_tree+0x92/0x2a0 fs/super.c:1780
do_new_mount+0x2be/0xb40 fs/namespace.c:3352
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f532cc7e5ea
RSP: 002b:00007f532dab2ef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f532dab2f80 RCX: 00007f532cc7e5ea
RDX: 0000000020005d80 RSI: 0000000020005dc0 RDI: 00007f532dab2f40
RBP: 0000000020005d80 R08: 00007f532dab2f80 R09: 0000000000000400
R10: 0000000000000400 R11: 0000000000000246 R12: 0000000020005dc0
R13: 00007f532dab2f40 R14: 0000000000005e05 R15: 0000000020005e00
</TASK>

Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
1 lock held by khungtaskd/30:
#0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:6/1097:
2 locks held by getty/4846:
#0: ffff88802abe40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/1:5/5342:
#0: ffff888015079148 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888015079148 ((wq_completion)events_long){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc9000a217d00 ((work_completion)(&c->read_only_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc9000a217d00 ((work_completion)(&c->read_only_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff888064d80278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_read_only_work+0x25/0x40 fs/bcachefs/super.c:392
1 lock held by syz-executor.5/5431:
#0: ffff888064d80278 (&c->state_lock){+.+.}-{3:3}, at: __bch2_fs_stop+0xfd/0x540 fs/bcachefs/super.c:612
1 lock held by kworker/u8:7/6982:
1 lock held by syz-executor.2/7397:
2 locks held by syz-executor/7402:
1 lock held by syz-executor.3/7406:
#0: ffffffff8e339200 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:4448
2 locks held by syz-executor.5/7440:
2 locks held by syz-executor/7444:

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.9.0-syzkaller-12400-g6fbf71854e2d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4532 Comm: klogd Not tainted 6.9.0-syzkaller-12400-g6fbf71854e2d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__kasan_check_read+0xa/0x20 mm/kasan/shadow.c:31
Code: db eb d0 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 89 f6 48 8b 0c 24 <31> d2 e9 6f e6 ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00
RSP: 0018:ffffc900036ff658 EFLAGS: 00000056
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81727bc0
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff8fad43a8
RBP: ffffc900036ff788 R08: ffffffff92fa8597 R09: 1ffffffff25f50b2
R10: dffffc0000000000 R11: fffffbfff25f50b3 R12: 1ffff920006dfed8
R13: ffffffff81659adb R14: 0000000000000000 R15: dffffc0000000000
FS: 00007fc3dc3d6380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb38dc96000 CR3: 000000007d38c000 CR4: 0000000000350ef0
Call Trace:
<NMI>
</NMI>
<TASK>
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:571 [inline]
cpu_online include/linux/cpumask.h:1181 [inline]
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xb0/0x9f0 kernel/locking/lockdep.c:5765
do_write_seqcount_end include/linux/seqlock.h:515 [inline]
psi_account_irqtime+0x382/0x5d0 kernel/sched/psi.c:1021
update_rq_clock_task kernel/sched/core.c:726 [inline]
update_rq_clock+0x22b/0x8a0 kernel/sched/core.c:770
ttwu_queue kernel/sched/core.c:4056 [inline]
try_to_wake_up+0x86b/0x1470 kernel/sched/core.c:4378
autoremove_wake_function+0x16/0x110 kernel/sched/wait.c:384
__wake_up_common kernel/sched/wait.c:89 [inline]
__wake_up_common_lock+0x132/0x1e0 kernel/sched/wait.c:106
sock_def_readable+0x20f/0x5b0 net/core/sock.c:3353
unix_dgram_sendmsg+0x1490/0x1f80 net/unix/af_unix.c:2112
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x223/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2192
__do_sys_sendto net/socket.c:2204 [inline]
__se_sys_sendto net/socket.c:2200 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2200
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc3dc5389b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd6a24c228 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc3dc5389b5
RDX: 000000000000005c RSI: 000055e4b1c92850 RDI: 0000000000000003
RBP: 000055e4b1c8d910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007fc3dc6c6212 R14: 00007ffd6a24c328 R15: 0000000000000000
</TASK>


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

[Kent Overstreet]

#syz fix: bcachefs: Add missing bch2_journal_do_writes() call

[Hillf Danton]

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+1e1b38...@syzkaller.appspotmail.com

Tested on:

commit: 8282d5af Merge tag 'nfs-for-6.10-3' of git://git.linux..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=161cf8b9980000
kernel config: https://syzkaller.appspot.com/x/.config?x=e40800950091403a

dashboard link: https://syzkaller.appspot.com/bug?extid=1e1b380ef8d95b36f789
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.

[Hillf Danton]

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

--- x/fs/bcachefs/btree_locking.c
+++ y/fs/bcachefs/btree_locking.c
@@ -10,7 +10,6 @@ void bch2_btree_lock_init(struct btree_b
enum six_lock_init_flags flags)
{
__six_lock_init(&b->lock, "b->c.lock", &bch2_btree_node_lock_key, flags);
- lockdep_set_novalidate_class(&b->lock);
}

#ifdef CONFIG_LOCKDEP
--

[syzbot]

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
possible deadlock in __bch2_btree_path_make_mut

bcachefs (loop0): alloc_read... done
bcachefs (loop0): stripes_read... done
bcachefs (loop0): snapshots_read... done
============================================
WARNING: possible recursive locking detected
6.10.0-rc5-syzkaller-00282-g8282d5af7be8-dirty #0 Not tainted
--------------------------------------------
syz-executor/6090 is trying to acquire lock:
ffff88806719b070
(b->c.lock){++++}-{0:0}, at: btree_path_copy fs/bcachefs/btree_iter.c:1228 [inline]
(b->c.lock){++++}-{0:0}, at: btree_path_clone fs/bcachefs/btree_iter.c:1236 [inline]
(b->c.lock){++++}-{0:0}, at: __bch2_btree_path_make_mut+0x1ec/0x570 fs/bcachefs/btree_iter.c:1249

but task is already holding lock:
ffff88806719d070 (b->c.lock){++++}-{0:0}, at: six_relock_type fs/bcachefs/six.h:289 [inline]
ffff88806719d070 (b->c.lock){++++}-{0:0}, at: __bch2_btree_node_relock+0x142/0x9c0 fs/bcachefs/btree_locking.c:506

other info that might help us debug this:
Possible unsafe locking scenario:

CPU0
----
lock(b->c.lock);
lock(b->c.lock);

*** DEADLOCK ***

May be due to missing lock nesting notation

5 locks held by syz-executor/6090:
#0: ffff888065f80278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_start+0x45/0x5b0 fs/bcachefs/super.c:1005
#1: ffff888065f842d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline]
#1: ffff888065f842d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline]
#1: ffff888065f842d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x840/0xce0 fs/bcachefs/btree_iter.c:3193
#2: ffff88806719d070 (b->c.lock){++++}-{0:0}, at: six_relock_type fs/bcachefs/six.h:289 [inline]
#2: ffff88806719d070 (b->c.lock){++++}-{0:0}, at: __bch2_btree_node_relock+0x142/0x9c0 fs/bcachefs/btree_locking.c:506
#3: ffff88806a354c88 (b->c.lock){++++}-{0:0}, at: six_relock_type fs/bcachefs/six.h:289 [inline]
#3: ffff88806a354c88 (b->c.lock){++++}-{0:0}, at: __bch2_btree_node_relock+0x142/0x9c0 fs/bcachefs/btree_locking.c:506
#4: ffff88806719b070 (b->c.lock){++++}-{0:0}, at: six_trylock_type fs/bcachefs/six.h:207 [inline]
#4: ffff88806719b070 (b->c.lock){++++}-{0:0}, at: btree_node_lock fs/bcachefs/btree_locking.h:266 [inline]
#4: ffff88806719b070 (b->c.lock){++++}-{0:0}, at: btree_path_lock_root fs/bcachefs/btree_iter.c:757 [inline]
#4: ffff88806719b070 (b->c.lock){++++}-{0:0}, at: bch2_btree_path_traverse_one+0xa44/0x2930 fs/bcachefs/btree_iter.c:1177

stack backtrace:
CPU: 1 PID: 6090 Comm: syz-executor Not tainted 6.10.0-rc5-syzkaller-00282-g8282d5af7be8-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024

Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114

check_deadlock kernel/locking/lockdep.c:3062 [inline]
validate_chain+0x15d3/0x5900 kernel/locking/lockdep.c:3856
__lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
six_lock_increment+0x3f/0x110 fs/bcachefs/six.c:717
btree_path_copy fs/bcachefs/btree_iter.c:1228 [inline]
btree_path_clone fs/bcachefs/btree_iter.c:1236 [inline]
__bch2_btree_path_make_mut+0x1ec/0x570 fs/bcachefs/btree_iter.c:1249
bch2_btree_path_make_mut fs/bcachefs/btree_iter.h:196 [inline]
__bch2_btree_path_set_pos+0x382/0x1750 fs/bcachefs/btree_iter.c:1264
bch2_btree_path_set_pos fs/bcachefs/btree_iter.h:211 [inline]
bch2_btree_iter_peek_upto+0x5471/0x7090 fs/bcachefs/btree_iter.c:2377
bch2_btree_iter_peek_slot+0xf01/0x26d0 fs/bcachefs/btree_iter.c:2643
__bch2_bkey_get_iter fs/bcachefs/btree_iter.h:552 [inline]
bch2_bkey_get_iter fs/bcachefs/btree_iter.h:566 [inline]
bch2_bucket_do_index+0x685/0x10d0 fs/bcachefs/alloc_background.c:680
bch2_trigger_alloc+0x206d/0x3e10 fs/bcachefs/alloc_background.c:785
bch2_key_trigger fs/bcachefs/bkey_methods.h:88 [inline]
bch2_key_trigger_new fs/bcachefs/bkey_methods.h:116 [inline]
run_one_trans_trigger fs/bcachefs/btree_trans_commit.c:517 [inline]
run_btree_triggers+0x86e/0x11d0 fs/bcachefs/btree_trans_commit.c:544
bch2_trans_commit_run_triggers fs/bcachefs/btree_trans_commit.c:587 [inline]
__bch2_trans_commit+0x574/0x88e0 fs/bcachefs/btree_trans_commit.c:1022
bch2_trans_commit fs/bcachefs/btree_update.h:170 [inline]
bch2_trans_mark_metadata_bucket+0x46f/0x1350 fs/bcachefs/buckets.c:1413
bch2_trans_mark_metadata_sectors fs/bcachefs/buckets.c:1430 [inline]
__bch2_trans_mark_dev_sb fs/bcachefs/buckets.c:1465 [inline]
bch2_trans_mark_dev_sb+0x323/0x720 fs/bcachefs/buckets.c:1493
bch2_trans_mark_dev_sbs_flags+0x6be/0x720 fs/bcachefs/buckets.c:1503
bch2_run_recovery_pass+0xf2/0x1e0 fs/bcachefs/recovery_passes.c:182
bch2_run_recovery_passes+0x19e/0x820 fs/bcachefs/recovery_passes.c:225
bch2_fs_recovery+0x2386/0x3730 fs/bcachefs/recovery.c:813
bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1035
bch2_fs_open+0xa8d/0xdf0 fs/bcachefs/super.c:2132
bch2_mount+0x6b0/0x13a0 fs/bcachefs/fs.c:1926

legacy_get_tree+0xf0/0x190 fs/fs_context.c:662
vfs_get_tree+0x92/0x2a0 fs/super.c:1780
do_new_mount+0x2be/0xb40 fs/namespace.c:3352
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f

RIP: 0033:0x7f3538a7e5ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f353978def8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f353978df80 RCX: 00007f3538a7e5ea
RDX: 0000000020005d80 RSI: 0000000020005dc0 RDI: 00007f353978df40
RBP: 0000000020005d80 R08: 00007f353978df80 R09: 0000000000000400

R10: 0000000000000400 R11: 0000000000000246 R12: 0000000020005dc0

R13: 00007f353978df40 R14: 0000000000005e05 R15: 0000000020005e00
</TASK>
bcachefs (loop0): going read-write
bcachefs (loop0): journal_replay... done
bcachefs (loop0): resume_logged_ops... done
bcachefs (loop0): delete_dead_inodes... done
bcachefs (loop0): done starting filesystem
syz-executor (6090) used greatest stack depth: 16752 bytes left

Tested on:

commit: 8282d5af Merge tag 'nfs-for-6.10-3' of git://git.linux..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

console output: https://syzkaller.appspot.com/x/log.txt?x=152c24b9980000

kernel config: https://syzkaller.appspot.com/x/.config?x=e40800950091403a
dashboard link: https://syzkaller.appspot.com/bug?extid=1e1b380ef8d95b36f789
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

patch: https://syzkaller.appspot.com/x/patch.diff?x=17cc24b9980000