INFO: task syz-executor.1:5050 blocked for more than 143 seconds.
Not tainted 6.6.0-rc4-syzkaller-00176-gb78b18fb8ee1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:20680 pid:5050 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:747
lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444
jfs_umount+0x2ce/0x3a0 fs/jfs/jfs_umount.c:114
jfs_put_super+0x8a/0x190 fs/jfs/super.c:194
generic_shutdown_super+0x13a/0x2c0 fs/super.c:693
kill_block_super+0x41/0x70 fs/super.c:1646
deactivate_locked_super+0xa4/0x110 fs/super.c:481
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9fabc7de17
RSP: 002b:00007fff6e6aebc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9fabc7de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fff6e6aec80
RBP: 00007fff6e6aec80 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff6e6afd40
R13: 00007f9fabcc73b9 R14: 0000000000023d73 R15: 0000000000000005
INFO: task syz-executor.0:5066 blocked for more than 143 seconds.
Not tainted 6.6.0-rc4-syzkaller-00176-gb78b18fb8ee1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20296 pid:5066 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:747
lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444
jfs_umount+0x2ce/0x3a0 fs/jfs/jfs_umount.c:114
jfs_put_super+0x8a/0x190 fs/jfs/super.c:194
generic_shutdown_super+0x13a/0x2c0 fs/super.c:693
kill_block_super+0x41/0x70 fs/super.c:1646
deactivate_locked_super+0xa4/0x110 fs/super.c:481
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f532aa7de17
RSP: 002b:00007ffc13419f18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f532aa7de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc13419fd0
RBP: 00007ffc13419fd0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc1341b090
R13: 00007f532aac73b9 R14: 0000000000023d69 R15: 0000000000000005
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4790:
#0: ffff88802a12a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
2 locks held by syz-executor.1/5050:
#0: ffff88805223a0e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88805223a0e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88805223a0e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:513
#1: ffffffff8d71f3e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor.4/5063:
#0: ffff8880796200e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880796200e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880796200e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:513
#1: ffffffff8d71f3e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor.0/5066:
#0: ffff888028f860e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888028f860e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888028f860e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:513
#1: ffffffff8d71f3e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor.3/6512:
#0: ffff88807dd4a0e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807dd4a0e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807dd4a0e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:513
#1: ffffffff8d71f3e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz-executor.5/6673:
#0: ffff8880512440e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880512440e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880512440e0 (&type->s_umount_key#102){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:513
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc4-syzkaller-00176-gb78b18fb8ee1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 143 Comm: kworker/u4:6 Not tainted 6.6.0-rc4-syzkaller-00176-gb78b18fb8ee1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:19 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:67 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:103 [inline]
RIP: 0010:lock_release+0x140/0x9d0 kernel/locking/lockdep.c:5769
Code: 42 0f b6 04 38 84 c0 0f 85 c3 05 00 00 83 3b 00 0f 85 ff 04 00 00 4c 8d b4 24 b0 00 00 00 4c 89 f3 48 c1 eb 03 42 80 3c 3b 00 <74> 08 4c 89 f7 e8 96 11 7b 00 4c 89 6c 24 50 48 c7 84 24 b0 00 00
RSP: 0018:ffffc90002defa60 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff920005bdf62 RCX: ffffffff816d76d0
RDX: 0000000000000000 RSI: ffffffff8b599cc0 RDI: ffffffff8b599c80
RBP: ffffc90002defb88 R08: ffffffff8e9a7faf R09: 1ffffffff1d34ff5
R10: dffffc0000000000 R11: fffffbfff1d34ff6 R12: 1ffff920005bdf58
R13: ffffffff8a9e151b R14: ffffc90002defb10 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c001741a01 CR3: 000000000d130000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:308 [inline]
rcu_read_unlock include/linux/rcupdate.h:782 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x290/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304