INFO: task syz-executor.5:24816 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24752 pid:24816 ppid: 9880 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6250
schedule+0x12b/0x1f0 kernel/sched/core.c:6323
io_uring_cancel_generic+0x5b3/0x661 fs/io_uring.c:9850
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x281/0x24f0 kernel/exit.c:787
do_group_exit+0x168/0x2d0 kernel/exit.c:929
get_signal+0x16b0/0x2090 kernel/signal.c:2820
arch_do_signal_or_restart+0x9c/0x730 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x191/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0ab2862ae9
RSP: 002b:00007f0aafdd8218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f0ab2975f68 RCX: 00007f0ab2862ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0ab2975f68
RBP: 00007f0ab2975f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0ab2975f6c
R13: 00007fffd5d9e74f R14: 00007f0aafdd8300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1d8c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6157:
2 locks held by agetty/6155:
#0: ffff888023642098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900028cc2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2113
1 lock held by kworker/u4:8/11410:
2 locks held by kworker/u4:0/6766:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2929 Comm: systemd-journal Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rcu_rnp_online_cpus kernel/rcu/tree.c:221 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0xbe/0x130 kernel/rcu/tree.c:1171
Code: 20 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 05 2c 61 00 4c 8b 23 49 8d 5e 70 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 e8 2b 61 00 4c 23 23 75 27 49 83 c6 78 4c 89 f0
RSP: 0018:ffffc9000b5d75d8 EFLAGS: 00000246
RAX: 1ffffffff196436e RBX: ffffffff8cb21b70 RCX: 0000000080000002
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8880b9b3a418
RBP: ffffc9000b5d7690 R08: dffffc0000000000 R09: fffffbfff1bfa1ee
R10: fffffbfff1bfa1ee R11: 0000000000000000 R12: 0000000000000002
R13: 1ffff920016baee4 R14: ffffffff8cb21b00 R15: dffffc0000000000
FS: 00007f3d30b888c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3d2c776008 CR3: 000000007b153000 CR4: 00000000003506e0
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_sched_held+0x74/0x130 kernel/rcu/update.c:123
trace_lock_release+0x4f/0x150 include/trace/events/lock.h:58
lock_release+0x82/0x810 kernel/locking/lockdep.c:5636
__raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
dput+0x1d1/0x6e0 fs/dcache.c:875
path_put fs/namei.c:557 [inline]
terminate_walk+0x1c2/0x570 fs/namei.c:672
path_openat+0x27a8/0x3670 fs/namei.c:3560
do_filp_open+0x277/0x4f0 fs/namei.c:3586
do_sys_openat2+0x13b/0x500 fs/open.c:1200
do_sys_open fs/open.c:1216 [inline]
__do_sys_open fs/open.c:1224 [inline]
__se_sys_open fs/open.c:1220 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1220
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3d3011785d
Code: bb 20 00 00 75 10 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 67 f6 ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffed96576f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffed9657a00 RCX: 00007f3d3011785d
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000558b4667c350
RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000293 R12: 00000000ffffffff
R13: 0000558b4666e040 R14: 00007ffed96579c0 R15: 0000558b4667a470
----------------
Code disassembly (best guess):
0: 20 48 89 and %cl,-0x77(%rax)
3: d8 48 c1 fmuls -0x3f(%rax)
6: e8 03 42 80 3c callq 0x3c80420e
b: 38 00 cmp %al,(%rax)
d: 74 08 je 0x17
f: 48 89 df mov %rbx,%rdi
12: e8 05 2c 61 00 callq 0x612c1c
17: 4c 8b 23 mov (%rbx),%r12
1a: 49 8d 5e 70 lea 0x70(%r14),%rbx
1e: 48 89 d8 mov %rbx,%rax
21: 48 c1 e8 03 shr $0x3,%rax
25: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
* 2a: 74 08 je 0x34 <-- trapping instruction
2c: 48 89 df mov %rbx,%rdi
2f: e8 e8 2b 61 00 callq 0x612c1c
34: 4c 23 23 and (%rbx),%r12
37: 75 27 jne 0x60
39: 49 83 c6 78 add $0x78,%r14
3d: 4c 89 f0 mov %r14,%rax