INFO: task syz-executor:9696 blocked for more than 144 seconds.
      Not tainted 5.15.179-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20824 pid: 9696 ppid:     1 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5029 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6375
 schedule+0x11b/0x1f0 kernel/sched/core.c:6458
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6517
 __mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1452
 jfs_umount+0x298/0x370 fs/jfs/jfs_umount.c:116
 jfs_put_super+0x86/0x180 fs/jfs/super.c:194
 generic_shutdown_super+0x130/0x310 fs/super.c:475
 kill_block_super+0x7a/0xe0 fs/super.c:1427
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4be2e53497
RSP: 002b:00007ffc95d3afb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f4be2ed308c RCX: 00007f4be2e53497
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc95d3b070
RBP: 00007ffc95d3b070 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc95d3c100
R13: 00007f4be2ed308c R14: 0000000000092f5c R15: 00007ffc95d3c140
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/1:0/21:
 #0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc90000db7d20 (xfrm_state_gc_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffffffff8cb23aa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
 #2: ffffffff8cb23aa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
1 lock held by khungtaskd/27:
 #0: ffffffff8cb1f4e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
6 locks held by kworker/1:1H/150:
3 locks held by kworker/u4:2/154:
3 locks held by kworker/1:2/1106:
 #0: ffff88814198ed38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc90004d77d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffff8880247e8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #2: ffff8880247e8220 (&dev->mutex){....}-{3:3}, at: hub_event+0x208/0x54c0 drivers/usb/core/hub.c:5781
2 locks held by klogd/3536:
1 lock held by udevd/3547:
2 locks held by getty/3928:
 #0: ffff88814cca6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
 #1: ffffc900026362e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
2 locks held by syz-executor/4175:
 #0: ffff888075c640e0 (&type->s_umount_key#91){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
 #1: ffffffff8cecc5e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1452
4 locks held by kworker/u4:5/4211:
4 locks held by kworker/u4:6/4228:
3 locks held by kworker/u4:10/4810:
2 locks held by kworker/1:8/6973:
3 locks held by kworker/u4:19/7341:
3 locks held by kworker/u4:20/7343:
3 locks held by kworker/u4:22/7346:
 #0: ffff8880175cd938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc90003647d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffffffff8dc37e10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x166/0xc90 net/core/net_namespace.c:572
2 locks held by kworker/u4:23/7348:
3 locks held by kworker/u4:25/7356:
2 locks held by kworker/0:6/9088:
2 locks held by syz-executor/9696:
 #0: ffff88806dc000e0 (&type->s_umount_key#91){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
 #1: ffffffff8cecc5e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/10147:
 #0: ffff88807e9c60e0 (&type->s_umount_key#91){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
 #1: ffffffff8cecc5e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1452
1 lock held by syz.1.1408/10791:
 #0: ffff888075c640e0 (&type->s_umount_key#91){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:716
2 locks held by syz-executor/11000:
 #0: ffff88806d2600e0 (&type->s_umount_key#91){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
 #1: ffffffff8cecc5e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1452
2 locks held by syz-executor/11726:
 #0: ffff8880774380e0 (&type->s_umount_key#91){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
 #1: ffffffff8cecc5e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1452
2 locks held by kworker/u4:0/13018:
2 locks held by syz.4.1760/13075:

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

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xe72/0xeb0 kernel/hung_task.c:369
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3529 Comm: syslogd Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:84 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x71/0x290 mm/kasan/generic.c:189
Code: 54 37 ff 49 c1 ea 03 49 bb 01 00 00 00 00 fc ff df 4f 8d 34 1a 4c 89 f5 4c 29 cd 48 83 fd 10 7f 26 48 85 ed 0f 84 3a 01 00 00 <49> f7 d2 49 01 da 41 80 39 00 0f 85 c4 01 00 00 49 ff c1 49 ff c2
RSP: 0018:ffffc90002ddfb78 EFLAGS: 00000202
RAX: 1ffff1100fc7b201 RBX: 1ffff1100b10535d RCX: ffffffff816244c1
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888058829ae8
RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed100b10535d
R10: 1ffff1100b10535d R11: dffffc0000000001 R12: ffffc90002ddfbe0
R13: 1ffff920005bbf78 R14: ffffed100b10535e R15: dffffc0000000000
FS:  00007f9aa0611380(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000b000 CR3: 000000002054c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1667 [inline]
 rwsem_write_trylock+0xa1/0x210 kernel/locking/rwsem.c:262
 __down_write_common kernel/locking/rwsem.c:1291 [inline]
 __down_write kernel/locking/rwsem.c:1301 [inline]
 down_write+0x44/0x60 kernel/locking/rwsem.c:1552
 inode_lock include/linux/fs.h:787 [inline]
 generic_file_write_iter+0x7c/0x1b0 mm/filemap.c:3941
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0xacd/0xe50 fs/read_write.c:594
 ksys_write+0x1a2/0x2c0 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9aa0765bf2
Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fffa12638c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9aa0765bf2
RDX: 0000000000000067 RSI: 0000559797f85c50 RDI: 0000000000000003
RBP: 0000559797f85c50 R08: 0000000000000001 R09: 0000000000000000
R10: 00007f9aa09043a3 R11: 0000000000000246 R12: 0000000000000067
R13: 00007f9aa0611300 R14: 0000000000000006 R15: 0000559797f85a60
 </TASK>