INFO: task syz-executor:8758 blocked for more than 143 seconds.
Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21880 pid:8758 tgid:8758 ppid:1 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16a2/0x4cb0 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x724/0xe80 kernel/locking/mutex.c:747
lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
jfs_umount+0x2ef/0x3c0 fs/jfs/jfs_umount.c:114
jfs_put_super+0x8c/0x190 fs/jfs/super.c:194
generic_shutdown_super+0x132/0x2c0 fs/super.c:643
kill_block_super+0x44/0x90 fs/super.c:1755
deactivate_locked_super+0xbc/0x130 fs/super.c:474
cleanup_mnt+0x425/0x4c0 fs/namespace.c:1417
task_work_run+0x1d1/0x260 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1c6dd8fc57
RSP: 002b:00007ffe7bef3a98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f1c6de10925 RCX: 00007f1c6dd8fc57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe7bef3b50
RBP: 00007ffe7bef3b50 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe7bef4be0
R13: 00007f1c6de10925 R14: 0000000000043a4d R15: 00007ffe7bef4c20
INFO: task syz.1.320:9697 blocked for more than 144 seconds.
Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.320 state:D stack:25128 pid:9697 tgid:9696 ppid:9423 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16a2/0x4cb0 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
rwsem_down_write_slowpath+0xbec/0x1030 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1578
__super_lock fs/super.c:57 [inline]
super_lock+0x25c/0x3b0 fs/super.c:121
user_get_super+0xc8/0x120 fs/super.c:998
quotactl_block fs/quota/quota.c:890 [inline]
__do_sys_quotactl fs/quota/quota.c:955 [inline]
__se_sys_quotactl+0x4da/0x950 fs/quota/quota.c:917
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f59f8e929
RSP: 002b:00007f8f5ad50038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f8f5a1b5fa0 RCX: 00007f8f59f8e929
RDX: 0000000000000000 RSI: 0000200000000040 RDI: ffffffff80000201
RBP: 00007f8f5a010b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000100 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8f5a1b5fa0 R15: 00007fff27e699e8
Showing all locks held in the system:
2 locks held by kworker/u8:1/13:
1 lock held by khungtaskd/31:
#0: ffffffff8e13eda0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13eda0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13eda0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
2 locks held by getty/5581:
#0: ffff88814c7940a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
2 locks held by syz-executor/6605:
2 locks held by syz-executor/8220:
#0: ffff88807d7a00e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff88807d7a00e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff88807d7a00e0 (&type->s_umount_key#74){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570da8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/8402:
#0: ffff88802a04a0e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff88802a04a0e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff88802a04a0e0 (&type->s_umount_key#74){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570da8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/8758:
#0: ffff88802bd320e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff88802bd320e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff88802bd320e0 (&type->s_umount_key#74){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570da8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/9044:
#0: ffff888058b120e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff888058b120e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff888058b120e0 (&type->s_umount_key#74){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570da8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/9204:
#0: ffff8880297600e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff8880297600e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff8880297600e0 (&type->s_umount_key#74){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570da8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/9299:
#0: ffff88808d06a0e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff88808d06a0e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff88808d06a0e0 (&type->s_umount_key#74){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570da8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz.1.320/9697:
#0: ffff88807d7a00e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff88807d7a00e0 (&type->s_umount_key#74){++++}-{4:4}, at: super_lock+0x25c/0x3b0 fs/super.c:121
2 locks held by syz-executor/9886:
#0: ffff8880552fc0e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff8880552fc0e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff8880552fc0e0 (&type->s_umount_key#74){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570da8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
2 locks held by dhcpcd/10725:
#0: ffff88805ae60e08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline]
#0: ffff88805ae60e08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:646 [inline]
#0: ffff88805ae60e08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x9b/0x240 net/socket.c:1391
#1: ffffffff8e1448b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#1: ffffffff8e1448b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730 kernel/rcu/tree_exp.h:998
1 lock held by syz.9.481/10799:
#0: ffff88802bd320e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff88802bd320e0 (&type->s_umount_key#74){++++}-{4:4}, at: super_lock+0x25c/0x3b0 fs/super.c:121
1 lock held by syz.8.501/10959:
#0: ffff88802a04a0e0 (&type->s_umount_key#74){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
#0: ffff88802a04a0e0 (&type->s_umount_key#74){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
2 locks held by syz.2.552/11421:
#0: ffff888095c00918 (&c->sb_lock){+.+.}-{4:4}, at: bch2_fs_alloc fs/bcachefs/super.c:918 [inline]
#0: ffff888095c00918 (&c->sb_lock){+.+.}-{4:4}, at: bch2_fs_open+0x11e5/0x2570 fs/bcachefs/super.c:2423
#1: ffff888095c049d0 (&c->mark_lock){++++}-{0:0}, at: bch2_sb_replicas_to_cpu_replicas+0x117/0x1a0 fs/bcachefs/replicas.c:600
1 lock held by cmp/11469:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:470
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 10961 Comm: udevd Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:vsnprintf+0x0/0xf00 lib/vsprintf.c:2792
Code: eb 0a e8 e3 f4 64 f6 b8 f0 ff ff ff 5b 41 5e c3 cc cc cc cc cc 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 58 49 89 cc 49
RSP: 0018:ffffc9000ba87878 EFLAGS: 00000246
RAX: ffffc9000ba879a0 RBX: ffffffff8bdc0dc0 RCX: ffffc9000ba87960
RDX: ffffffff8bdc0dc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000ba87a88 R08: ffffc9000ba879cf R09: 0000000000000000
R10: ffffc9000ba879a0 R11: fffff52001750f3a R12: 0000003000000010
R13: ffffc9000ba878c0 R14: ffffc9000ba87a98 R15: 1ffff92001750f20
FS: 00007fad9f556880(0000) GS:ffff888125c85000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f40025314e8 CR3: 000000004c780000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tomoyo_supervisor+0x133/0x1480 security/tomoyo/common.c:2170
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission+0x25a/0x380 security/tomoyo/file.c:587
tomoyo_path_perm+0x347/0x4b0 security/tomoyo/file.c:838
tomoyo_path_rmdir+0xa2/0xe0 security/tomoyo/tomoyo.c:195
security_path_rmdir+0x167/0x360 security/security.c:1949
do_rmdir+0x219/0x630 fs/namei.c:4522
__do_sys_rmdir fs/namei.c:4544 [inline]
__se_sys_rmdir fs/namei.c:4542 [inline]
__x64_sys_rmdir+0x47/0x50 fs/namei.c:4542
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fad9ef15407
Code: f0 ff ff 73 01 c3 48 8b 0d ee b9 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 54 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 c1 b9 0d 00 f7 d8 64 89 02 b8
RSP: 002b:00007ffdb46fcc88 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007ffdb46fccb0 RCX: 00007fad9ef15407
RDX: 0000000000000000 RSI: 00000000000007b0 RDI: 00007ffdb46fd0b0
RBP: 0000564097196890 R08: 00005640971894c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000564097184800
R13: 00007ffdb46fd8b0 R14: 0000000000000000 R15: 00007ffdb46fd0b0