INFO: task syz.1.482:5341 blocked for more than 143 seconds.
Not tainted 5.15.167-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.482 state:D stack:22912 pid: 5341 ppid: 3571 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
perf_pending_task_sync+0x13c/0x1c0 kernel/events/core.c:5123
_free_event+0x34/0xe60 kernel/events/core.c:5129
put_event kernel/events/core.c:5254 [inline]
perf_event_release_kernel+0x873/0x900 kernel/events/core.c:5379
perf_release+0x37/0x40 kernel/events/core.c:5389
__fput+0x3fe/0x8e0 fs/file_table.c:280
task_work_run+0x129/0x1a0 kernel/task_work.c:188
exit_task_work include/linux/task_work.h:33 [inline]
do_exit+0x6a3/0x2480 kernel/exit.c:874
do_group_exit+0x144/0x310 kernel/exit.c:996
get_signal+0xc66/0x14e0 kernel/signal.c:2897
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
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: 0033:0x7f50890da3d0
RSP: 002b:00007f508768f238 EFLAGS: 00000283
RAX: 0000000000000000 RBX: 00007f508768fd30 RCX: 00007f5089395160
RDX: 00007f508768f240 RSI: 00007f508768f370 RDI: 000000000000000b
RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000000 R12: 0000000000000073
R13: 00007f508768feb0 R14: 9999999999999999 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91fc60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
5 locks held by kworker/u4:4/1406:
#0: ffff8880171d5938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000539fd20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8da261d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf1/0xb60 net/core/net_namespace.c:561
#3: ffffffff8da31d88 (rtnl_mutex){+.+.}-{3:3}, at: caif_exit_net+0x6b/0x4e0 net/caif/caif_dev.c:527
#4: ffff88802083f680 (&caifn->caifdevs.lock){+.+.}-{3:3}, at: caif_exit_net+0x7e/0x4e0 net/caif/caif_dev.c:528
2 locks held by getty/3332:
#0: ffff88814b34a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc9000208e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
1 lock held by syz-executor/3558:
2 locks held by kworker/1:4/3612:
#0: ffff888017072138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003067d20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
3 locks held by kworker/1:5/3613:
#0: ffff888017070938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003077d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8c924228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
#2: ffffffff8c924228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:845
3 locks held by kworker/1:9/3657:
#0: ffff888017070938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc900030d7d20 (fqdir_free_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8c924130 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x9c/0x4e0 kernel/rcu/tree.c:4039
2 locks held by kworker/u4:8/6865:
1 lock held by syz-executor/7032:
1 lock held by syz-executor/7038:
3 locks held by syz.1.1051/7157:
1 lock held by syz.4.1059/7194:
1 lock held by syz.3.1060/7190:
1 lock held by syz.3.1060/7198:
1 lock held by syz.0.1061/7195:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
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: 3028 Comm: udevd Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:202
Code: 1f 84 00 00 00 00 00 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 78 08 69 0c 48 89 de 5b e9 07 f3 48 00 cc cc cc cc cc cc cc <48> 8b 04 24 65 48 8b 0d 44 15 82 7e 65 8b 15 45 15 82 7e 81 e2 00
RSP: 0018:ffffc90002317088 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 1ffff11017206a16 RCX: ffff88807c120000
RDX: ffff88807c120000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff81a1f616 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b90350b4
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007fde21095c80(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e4689a9040 CR3: 0000000028606000 CR4: 00000000003506f0
DR0: 0000000020000240 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
get_recursion_context kernel/events/internal.h:216 [inline]
perf_swevent_get_recursion_context+0xdf/0x150 kernel/events/core.c:9715
perf_trace_buf_alloc+0x57/0x2e0 kernel/trace/trace_event_perf.c:408
perf_trace_lock_acquire+0x1eb/0x4a0 include/trace/events/lock.h:13
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x4c6/0x4f0 kernel/locking/lockdep.c:5594
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312
rcu_read_lock include/linux/rcupdate.h:739 [inline]
BPF_PROG_RUN_ARRAY include/linux/bpf.h:1333 [inline]
trace_call_bpf+0x146/0x660 kernel/trace/bpf_trace.c:127
perf_trace_run_bpf_submit+0x7b/0x1d0 kernel/events/core.c:9987
perf_trace_lock_acquire+0x3bf/0x4a0 include/trace/events/lock.h:13
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x4c6/0x4f0 kernel/locking/lockdep.c:5594
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312
rcu_read_lock include/linux/rcupdate.h:739 [inline]
is_bpf_text_address+0x1d/0x260 kernel/bpf/core.c:721
kernel_text_address kernel/extable.c:151 [inline]
__kernel_text_address+0x94/0x100 kernel/extable.c:105
unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233
__d_alloc+0x2a/0x700 fs/dcache.c:1749
d_alloc+0x48/0x1d0 fs/dcache.c:1828
lookup_one_qstr_excl+0xca/0x240 fs/namei.c:1559
do_unlinkat+0x294/0x950 fs/namei.c:4332
__do_sys_unlink fs/namei.c:4396 [inline]
__se_sys_unlink fs/namei.c:4394 [inline]
__x64_sys_unlink+0x45/0x50 fs/namei.c:4394
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: 0033:0x7fde211c1da7
Code: f0 ff ff 73 01 c3 48 8b 0d 7e 90 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 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 90 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007fff2c374728 EFLAGS: 00000202 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fde211c1da7
RDX: 0000000000000001 RSI: 00007fff2c374800 RDI: 000055e43ae450d8
RBP: 000055e4689b2490 R08: 0000000014385610 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000bb8
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000