INFO: task syz-executor.1:10488 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.1 state:D stack:27256 pid:10488 ppid: 6538 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
io_uring_cancel_generic+0x53d/0x690 fs/io_uring.c:9850
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x60c/0x2b40 kernel/exit.c:787
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x21d0 kernel/signal.c:2820
arch_do_signal_or_restart+0x2a9/0x1c40 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+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f5a59bb7ae7
RSP: 002b:00007f5a5712d218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007f5a59ccaf68 RCX: 00007f5a59bb7ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5a59ccaf68
RBP: 00007f5a59ccaf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5a59ccaf6c
R13: 00007f5a5a1feb2f R14: 00007f5a5712d300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8b983920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446
1 lock held by in:imklog/6173:
#0: ffff8880724399f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by agetty/6401:
#0: ffff88807bcf5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90001f682e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 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+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 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+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2936 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:__lock_acquire+0x1022/0x54a0 kernel/locking/lockdep.c:4985
Code: 10 be 08 00 00 00 48 8d 43 3f 48 85 db 48 0f 49 c3 48 c1 f8 06 48 8d 3c c5 00 ba d3 8f e8 86 b8 61 00 48 0f a3 1d de 2f 77 0e <0f> 82 c7 f8 ff ff e8 d3 d4 79 02 85 c0 0f 84 f1 fd ff ff 48 c7 c0
RSP: 0018:ffffc900029e7cc8 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 00000000000000a0 RCX: ffffffff815c8a1a
RDX: fffffbfff1fa7743 RSI: 0000000000000008 RDI: ffffffff8fd3ba10
RBP: ffff88807aa58a82 R08: 0000000000000000 R09: ffffffff8fd3ba17
R10: fffffbfff1fa7742 R11: 0000000000000000 R12: ffff88807aa58a60
R13: ffff88807aa58000 R14: 0000000000040000 R15: 0000000000000000
FS: 00007fc4835f78c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc480a40000 CR3: 0000000019bc6000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5625 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590
do_write_seqcount_begin_nested include/linux/seqlock.h:520 [inline]
do_write_seqcount_begin include/linux/seqlock.h:545 [inline]
vtime_user_enter+0x9f/0x170 kernel/sched/cputime.c:709
__context_tracking_enter+0xef/0x100 kernel/context_tracking.c:82
user_enter_irqoff include/linux/context_tracking.h:41 [inline]
__exit_to_user_mode kernel/entry/common.c:130 [inline]
syscall_exit_to_user_mode+0x48/0x60 kernel/entry/common.c:302
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc48288ff17
Code: ff ff ff 48 8b 4d a0 0f b7 51 fe 48 8b 4d a8 66 89 54 08 fe e9 1a ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 b8 27 00 00 00 0f 05 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007ffda3793998 EFLAGS: 00000202 ORIG_RAX: 0000000000000027
RAX: 0000000000000b78 RBX: 00005555ee34e1e0 RCX: 00007fc48288ff17
RDX: 0000000000000000 RSI: 00000000177cd083 RDI: 00005555ee34e1e0
RBP: 0000000000000b78 R08: 000000000000018a R09: 00007ffda37f9080
R10: 00007ffda37f90f0 R11: 0000000000000202 R12: ffffffffffffffff
R13: 00007ffda3793a48 R14: 00005555edabe958 R15: 0005cff0f0157edc
----------------
Code disassembly (best guess):
0: 10 be 08 00 00 00 adc %bh,0x8(%rsi)
6: 48 8d 43 3f lea 0x3f(%rbx),%rax
a: 48 85 db test %rbx,%rbx
d: 48 0f 49 c3 cmovns %rbx,%rax
11: 48 c1 f8 06 sar $0x6,%rax
15: 48 8d 3c c5 00 ba d3 lea -0x702c4600(,%rax,8),%rdi
1c: 8f
1d: e8 86 b8 61 00 callq 0x61b8a8
22: 48 0f a3 1d de 2f 77 bt %rbx,0xe772fde(%rip) # 0xe773008
29: 0e
* 2a: 0f 82 c7 f8 ff ff jb 0xfffff8f7 <-- trapping instruction
30: e8 d3 d4 79 02 callq 0x279d508
35: 85 c0 test %eax,%eax
37: 0f 84 f1 fd ff ff je 0xfffffe2e
3d: 48 rex.W
3e: c7 .byte 0xc7
3f: c0 .byte 0xc0