INFO: task syz.1.9:5197 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc6-syzkaller-00215-g22f902dfc51e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.9         state:D stack:27360 pid:5197  tgid:5193  ppid:5087   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 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
 inode_lock include/linux/fs.h:791 [inline]
 __generic_file_fsync+0x9a/0x190 fs/libfs.c:1520
 generic_file_fsync+0x73/0xf0 fs/libfs.c:1557
 vfs_fsync_range fs/sync.c:188 [inline]
 vfs_fsync fs/sync.c:202 [inline]
 do_fsync fs/sync.c:212 [inline]
 __do_sys_fsync fs/sync.c:220 [inline]
 __se_sys_fsync fs/sync.c:218 [inline]
 __x64_sys_fsync+0x19a/0x1e0 fs/sync.c:218
 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: 0033:0x7f55c5f75bd9
RSP: 002b:00007f55c6d6d048 EFLAGS: 00000246 ORIG_RAX: 000000000000004a
RAX: ffffffffffffffda RBX: 00007f55c6104038 RCX: 00007f55c5f75bd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007f55c5fe4aa1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f55c6104038 R15: 00007ffc92501d38
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:9/2842:
 #0: ffff888015089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
 #0: ffff888015089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
 #1: ffffc90009757d00 ((work_completion)(&lo->rootcg_work)){+.+.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
2 locks held by getty/4839:
 #0: ffff88802af6a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
2 locks held by syz.1.9/5194:
1 lock held by syz.1.9/5197:
 #0: ffff888064014188 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
 #0: ffff888064014188 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: __generic_file_fsync+0x9a/0x190 fs/libfs.c:1520
2 locks held by syz-executor/6437:
5 locks held by syz.0.202/7055:
3 locks held by syz.2.201/7057:
 #0: ffff888047700988 (&c->sb_lock){+.+.}-{3:3}, at: bch2_fs_alloc+0xd5a/0x20a0 fs/bcachefs/super.c:825
 #1: ffff888047704980 (&c->mark_lock){++++}-{0:0}, at: bch2_sb_replicas_to_cpu_replicas+0x1c3/0x290 fs/bcachefs/replicas.c:726
 #2: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
 #2: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:939
2 locks held by syz.4.200/7059:

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

NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-syzkaller-00215-g22f902dfc51e #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
 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+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6437 Comm: syz-executor Not tainted 6.10.0-rc6-syzkaller-00215-g22f902dfc51e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:xas_clear_mark+0xa3/0x540
Code: 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 4d 85 ed 0f 84 2d 02 00 00 44 89 e6 45 89 e4 bf 04 00 00 00 89 74 24 04 <e8> c8 8b 1d f6 4c 89 f8 48 c1 e8 03 48 89 44 24 08 83 7c 24 04 03
RSP: 0018:ffffc90004b1f528 EFLAGS: 00000082
RAX: 0000000000000000 RBX: ffffc90004b1f632 RCX: ffff888029fa1e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004
RBP: dffffc0000000000 R08: ffffffff8b789efa R09: 1ffff1100c850fd5
R10: dffffc0000000000 R11: ffffed100c850fd6 R12: 0000000000000001
R13: ffff888064287c80 R14: 0000000000000020 R15: ffffc90004b1f620
FS:  000055558307c500(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b7e016000 CR3: 000000002cf46000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 xas_init_marks+0x88/0xe0 lib/xarray.c:948
 page_cache_delete mm/filemap.c:150 [inline]
 __filemap_remove_folio+0x58d/0x9e0 mm/filemap.c:232
 filemap_remove_folio+0x109/0x2e0 mm/filemap.c:264
 truncate_inode_folio+0x5d/0x70 mm/truncate.c:195
 shmem_undo_range+0x45d/0x1df0 mm/shmem.c:1001
 shmem_truncate_range mm/shmem.c:1114 [inline]
 shmem_evict_inode+0x29b/0xa60 mm/shmem.c:1242
 evict+0x2a8/0x630 fs/inode.c:667
 __dentry_kill+0x20d/0x630 fs/dcache.c:603
 dput+0x19f/0x2b0 fs/dcache.c:845
 __fput+0x5f8/0x8a0 fs/file_table.c:430
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x360 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb98f7757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007ffc0dec2f10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fb98f7757db
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000003
RBP: 00007ffc0dec2fcc R08: 0000000000000000 R09: 00007ffc0dec2cb7
R10: 0000000000000000 R11: 0000000000000246 R12: 000055558308f5eb
R13: 000055558308f590 R14: 00007fb98f7d5328 R15: 0000000000000005
 </TASK>