INFO: task syz.4.299:6829 blocked for more than 143 seconds.
Not tainted 6.12.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.299 state:D stack:23808 pid:6829 tgid:6829 ppid:6336 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
request_wait_answer fs/fuse/dev.c:464 [inline]
__fuse_request_send fs/fuse/dev.c:478 [inline]
__fuse_simple_request+0xe17/0x1840 fs/fuse/dev.c:572
fuse_simple_request fs/fuse/fuse_i.h:1156 [inline]
fuse_flush+0x69d/0x950 fs/fuse/file.c:542
filp_flush+0xae/0x150 fs/open.c:1525
filp_close+0x1e/0x40 fs/open.c:1538
__range_close fs/file.c:703 [inline]
__close_range+0x380/0x6c0 fs/file.c:760
__do_sys_close_range fs/open.c:1591 [inline]
__se_sys_close_range fs/open.c:1588 [inline]
__x64_sys_close_range+0x7a/0x90 fs/open.c:1588
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f811237dff9
RSP: 002b:00007ffd3070e338 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007f8112537a80 RCX: 00007f811237dff9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f8112537a80 R08: 0000000000000006 R09: 00007ffd3070e62f
R10: 00000000005f2a78 R11: 0000000000000246 R12: 000000000005ae21
R13: 00007ffd3070e440 R14: 0000000000000032 R15: ffffffffffffffff
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
1 lock held by klogd/4669:
2 locks held by getty/4981:
#0: ffff888031e8a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.4.299/6830:
#0: ffff88802f33b5b8 (&ima_iint_mutex_key[depth]){+.+.}-{3:3}, at: process_measurement+0x7a6/0x1fb0 security/integrity/ima/ima_main.c:269
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6834 Comm: syz-executor Not tainted 6.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
RIP: 0010:lock_release+0x1b0/0xa30 kernel/locking/lockdep.c:5845
Code: 84 24 b0 00 00 00 00 00 00 00 9c 8f 84 24 b0 00 00 00 42 80 3c 3b 00 74 08 4c 89 f7 e8 49 1a 8e 00 48 8b 9c 24 b0 00 00 00 fa <48> c7 c7 00 d7 0a 8c e8 54 18 55 0a 65 ff 05 8d 0c 92 7e 48 8d 94
RSP: 0018:ffffc9000234fa40 EFLAGS: 00000046
RAX: ffffffff93e356d0 RBX: 0000000000000046 RCX: ffffffff81707ce0
RDX: 0000000000000000 RSI: ffffffff8c60fac0 RDI: ffffffff8c60fa80
RBP: ffffc9000234fb70 R08: ffffffff901ced2f R09: 1ffffffff2039da5
R10: dffffc0000000000 R11: fffffbfff2039da6 R12: 1ffff92000469f54
R13: ffffffff8159d460 R14: ffffc9000234faf0 R15: dffffc0000000000
FS: 000055557eec0500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f1b6424680 CR3: 0000000062220000 CR4: 0000000000350ef0
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
unlock_task_sighand include/linux/sched/signal.h:753 [inline]
do_send_sig_info kernel/signal.c:1300 [inline]
group_send_sig_info+0x2e0/0x310 kernel/signal.c:1449
bpf_send_signal_common+0x2dd/0x430 kernel/trace/bpf_trace.c:857
____bpf_send_signal kernel/trace/bpf_trace.c:862 [inline]
bpf_send_signal+0x19/0x30 kernel/trace/bpf_trace.c:860
bpf_prog_7ba5217f62dcd359+0x41/0x49
bpf_dispatcher_nop_func include/linux/bpf.h:1257 [inline]
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run include/linux/filter.h:708 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2318 [inline]
bpf_trace_run2+0x2ee/0x540 kernel/trace/bpf_trace.c:2359
trace_sys_enter+0x93/0xd0 include/trace/events/syscalls.h:18
syscall_trace_enter+0xf8/0x150 kernel/entry/common.c:61
syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline]
syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline]
do_syscall_64+0xcc/0x230 arch/x86/entry/common.c:79
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f74ab719959
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007ffe2e204680 EFLAGS: 00000202 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f74ab719959
RDX: 00007ffe2e204680 RSI: 00007ffe2e2047b0 RDI: 0000000000000011
RBP: 00007f74ab7f033b R08: 00000000000000da R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000