INFO: task syz-executor:4179 blocked for more than 143 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:20432 pid: 4179 ppid: 1 flags:0x00004004
Call Trace:
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: 0033:0x7ff88e2b5497
RSP: 002b:00007ffdf06e8578 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007ff88e33508c RCX: 00007ff88e2b5497
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdf06e8630
RBP: 00007ffdf06e8630 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdf06e96c0
R13: 00007ff88e33508c R14: 0000000000012a19 R15: 00007ffdf06e9700
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1f4e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3928:
#0: ffff88802c642098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900025c62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
2 locks held by syz-executor/4179:
#0: ffff88806073a0e0 (&type->s_umount_key#55){++++}-{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/4182:
#0: ffff888028aee0e0 (&type->s_umount_key#55){++++}-{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 udevd/4193:
#0: ffff88804dfaa8b8 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xae/0xd10 fs/seq_file.c:182
#1: ffff88802bd83488 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x50/0x3b0 fs/kernfs/file.c:112
#2: ffff88804e6adcb8 (kn->active#32){++++}-{0:0}, at: kernfs_seq_start+0x6f/0x3b0 fs/kernfs/file.c:113
#3: ffff8880757cb1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#3: ffff8880757cb1a8 (&dev->mutex){....}-{3:3}, at: uevent_show+0x17e/0x340 drivers/base/core.c:2408
7 locks held by kworker/0:8/4268:
#0: ffff8881407bd538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc900032efd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffff88814834e220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff88814834e220 (&dev->mutex){....}-{3:3}, at: hub_event+0x208/0x54c0 drivers/usb/core/hub.c:5781
#3: ffff888075264220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#3: ffff888075264220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x570 drivers/base/dd.c:954
#4: ffff8880757cb1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#4: ffff8880757cb1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x570 drivers/base/dd.c:954
#5: ffffffff8d750188 (input_mutex){+.+.}-{3:3}, at: input_register_device+0xb81/0x1150 drivers/input/input.c:2422
#6: ffff88803637c2c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_register_handle+0x69/0x3a0 drivers/input/input.c:2588
2 locks held by syz-executor/4323:
#0: ffff8880619980e0 (&type->s_umount_key#55){++++}-{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/4467:
#0: ffff88801df320e0 (&type->s_umount_key#55){++++}-{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.6.55/4971:
#0: ffff888028aee0e0 (&type->s_umount_key#55){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:716
2 locks held by kworker/u4:25/5774:
#0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000471fd20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
2 locks held by kworker/u4:28/5851:
#0: ffff8880b8e3a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xa8/0x140 kernel/sched/core.c:483
#1: ffffc9000476fd20 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
1 lock held by syz.8.288/6205:
#0: ffff888028aee0e0 (&type->s_umount_key#55){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:716
1 lock held by syz.2.884/8352:
#0: ffff8880354dc460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:377
=============================================
NMI backtrace for cpu 1
CPU: 1 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:
__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
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5774 Comm: kworker/u4:25 Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: bat_events batadv_nc_worker
RIP: 0010:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:409 [inline]
RIP: 0010:batadv_nc_worker+0x250/0x5b0 net/batman-adv/network-coding.c:723
Code: e0 a0 bf 8b e8 41 7c 46 f7 e8 7c 3b 4f f7 e8 47 80 00 00 49 ff c4 48 8b 44 24 18 42 0f b6 04 28 84 c0 48 8b 14 24 75 11 8b 02 <49> 39 c4 73 25 e8 56 d8 63 f7 e9 39 fe ff ff 89 d1 80 e1 07 80 c1
RSP: 0018:ffffc9000471fbf8 EFLAGS: 00000246
RAX: 0000000000000400 RBX: 0000000000000001 RCX: ffffc9000471fb03
RDX: ffff888040ce5e90 RSI: ffffffff8aab3d00 RDI: ffffffff8af9fa80
RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff1c153f6
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000051
R13: dffffc0000000000 R14: ffff888076fa4c80 R15: ffff888040ce5e80
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000404030 CR3: 000000002093a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287