INFO: task syz-executor.4:18254 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller-12824-g9d64bf433c53 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25592 pid:18254 tgid:18251 ppid:24300 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1192/0x1b80 fs/fuse/dev.c:513
fuse_lookup_name+0x332/0x830 fs/fuse/dir.c:386
fuse_lookup+0x182/0x600 fs/fuse/dir.c:425
__lookup_slow+0x282/0x3e0 fs/namei.c:1693
lookup_slow+0x53/0x70 fs/namei.c:1710
walk_component+0x2d0/0x400 fs/namei.c:2001
lookup_last fs/namei.c:2458 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2482
filename_lookup+0x255/0x610 fs/namei.c:2511
vfs_statx+0x105/0x4e0 fs/stat.c:244
do_statx fs/stat.c:681 [inline]
__do_sys_statx fs/stat.c:708 [inline]
__se_sys_statx fs/stat.c:699 [inline]
__x64_sys_statx+0x1a4/0x240 fs/stat.c:699
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f098027cda9
RSP: 002b:00007f0980ff60c8 EFLAGS: 00000246 ORIG_RAX: 000000000000014c
RAX: ffffffffffffffda RBX: 00007f09803abf80 RCX: 00007f098027cda9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f09802c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f09803abf80 R15: 00007ffc146c78b8
INFO: task syz-executor.4:18255 blocked for more than 144 seconds.
Not tainted 6.7.0-syzkaller-12824-g9d64bf433c53 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23664 pid:18255 tgid:18251 ppid:24300 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
d_wait_lookup fs/dcache.c:2449 [inline]
d_alloc_parallel+0xc1a/0x1600 fs/dcache.c:2531
__lookup_slow+0x117/0x3e0 fs/namei.c:1678
lookup_slow+0x53/0x70 fs/namei.c:1710
walk_component+0x2d0/0x400 fs/namei.c:2001
lookup_last fs/namei.c:2458 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2482
filename_lookup+0x255/0x610 fs/namei.c:2511
user_path_at_empty+0x42/0x60 fs/namei.c:2920
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3689 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f098027cda9
RSP: 002b:00007f0980fd50c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f09803ac050 RCX: 00007f098027cda9
RDX: 0000000000000000 RSI: 000000002000a700 RDI: 0000000000000000
RBP: 00007f09802c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f09803ac050 R15: 00007ffc146c78b8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4805:
#0: ffff88802a44a0a0 (&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+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.5/5077:
#0: ffff8880213fe0e0 (&type->s_umount_key#59){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880213fe0e0 (&type->s_umount_key#59){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880213fe0e0 (&type->s_umount_key#59){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:509
2 locks held by kworker/1:2/20796:
#0: ffff88801308a938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff88801308a938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc90014a77d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc90014a77d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
2 locks held by kworker/u4:2/30661:
#0: ffff8880b993c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9928988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
2 locks held by syz-executor.4/18254:
#0: ffff88804812be10 (&type->i_mutex_dir_key#30){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88804812be10 (&type->i_mutex_dir_key#30){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
#1: ffff88804812c288 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:544
1 lock held by syz-executor.4/18255:
#0: ffff88804812be10 (&type->i_mutex_dir_key#30){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88804812be10 (&type->i_mutex_dir_key#30){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
2 locks held by syz-executor.1/21732:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-12824-g9d64bf433c53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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+0xfaf/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:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18312 Comm: udevd Not tainted 6.7.0-syzkaller-12824-g9d64bf433c53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4789 [inline]
RIP: 0010:__lock_acquire+0x721/0x1fd0 kernel/locking/lockdep.c:5087
Code: 04 24 8b 28 41 89 ec ff cd 0f 88 a5 00 00 00 89 eb 83 fd 31 73 7b 48 8d 04 9b 48 8d 5c c6 20 48 89 d8 48 c1 e8 03 0f b6 04 10 <84> c0 75 18 8b 1b 41 0f b6 04 16 84 c0 75 32 41 33 1f f7 c3 00 60
RSP: 0018:ffffc9000575f8b0 EFLAGS: 00000806
RAX: 0000000000000000 RBX: ffff888026474660 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffff888026474640 RDI: ffffffff90df73e0
RBP: 0000000000000000 R08: ffffffff90df73e7 R09: 1ffffffff21bee7c
R10: dffffc0000000000 R11: fffffbfff21bee7d R12: 0000000000000001
R13: ffff888026473b80 R14: 1ffff11004c8e8d1 R15: ffff888026474688
FS: 00007f3134c94c80(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056384c112660 CR3: 000000002bc59000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
_raw_write_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:318
stack_depot_put+0x2c/0x120 lib/stackdepot.c:628
release_free_meta mm/kasan/generic.c:530 [inline]
kasan_release_object_meta+0x90/0xa0 mm/kasan/generic.c:547
qlink_free mm/kasan/quarantine.c:148 [inline]
qlist_free_all+0x59/0xd0 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:324
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3813 [inline]
slab_alloc_node mm/slub.c:3860 [inline]
kmem_cache_alloc+0x16f/0x340 mm/slub.c:3867
getname_flags+0xbc/0x4f0 fs/namei.c:140
do_sys_openat2+0xd2/0x1d0 fs/open.c:1398
do_sys_open fs/open.c:1419 [inline]
__do_sys_openat fs/open.c:1435 [inline]
__se_sys_openat fs/open.c:1430 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1430
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f31349169a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffe4d36c450 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f31349169a4
RDX: 0000000000080000 RSI: 00007ffe4d36c588 RDI: 00000000ffffff9c
RBP: 00007ffe4d36c588 R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 000056384b2acb42 R14: 0000000000000001 R15: 000056384b2c8160