INFO: task syz-executor.1:7871 blocked for more than 143 seconds.
Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27240 pid: 7871 ppid: 3621 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
schedule+0xd2/0x1f0 kernel/sched/core.c:6460
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x373/0x530 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10381 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10451
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2864
arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f965e6890e9
RSP: 002b:00007f965f749218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f965e79bf68 RCX: 00007f965e6890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f965e79bf68
RBP: 00007f965e79bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f965e79bf6c
R13: 00007ffcc16f72cf R14: 00007f965f749300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bd820e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by getty/3282:
#0: ffff88801dab9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b832e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #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:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7899 Comm: iou-wrk-7871 Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_switch+0xb5/0xf0 kernel/kcov.c:322
Code: 00 00 00 48 39 f7 72 1b 48 83 c2 01 48 89 5c 30 e0 48 89 6c 30 e8 4c 89 5c 30 f0 4e 89 4c e8 20 48 89 10 48 83 c1 01 49 39 ca <75> 95 5b 5d 41 5c 41 5d c3 48 83 f8 40 bb 07 00 00 00 0f 84 6c ff
RSP: 0018:ffffc9000b747b18 EFLAGS: 00000216
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 000000000000000b
RDX: 0000000000000000 RSI: ffff88801e0e3b00 RDI: 0000000000000003
RBP: 000000000000000a R08: ffffffff89dc3c20 R09: ffffffff81ed51b9
R10: 0000000000000028 R11: 0000000000000016 R12: ffff88801e0e3b00
R13: ffff88807e8d7b40 R14: ffff88807e8d7b40 R15: ffff88807e8d7c18
FS: 00007f965f749700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00f0ce980 CR3: 0000000079206000 CR4: 0000000000350ee0
Call Trace:
io_issue_sqe+0x1a9/0x8a00 fs/io_uring.c:7126
io_wq_submit_work+0x22a/0x620 fs/io_uring.c:7308
io_worker_handle_work+0xb1c/0x1ab0 fs/io-wq.c:597
io_wqe_worker+0x637/0xdb0 fs/io-wq.c:644
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 48 39 add %cl,0x39(%rax)
5: f7 72 1b divl 0x1b(%rdx)
8: 48 83 c2 01 add $0x1,%rdx
c: 48 89 5c 30 e0 mov %rbx,-0x20(%rax,%rsi,1)
11: 48 89 6c 30 e8 mov %rbp,-0x18(%rax,%rsi,1)
16: 4c 89 5c 30 f0 mov %r11,-0x10(%rax,%rsi,1)
1b: 4e 89 4c e8 20 mov %r9,0x20(%rax,%r13,8)
20: 48 89 10 mov %rdx,(%rax)
23: 48 83 c1 01 add $0x1,%rcx
27: 49 39 ca cmp %rcx,%r10
* 2a: 75 95 jne 0xffffffc1 <-- trapping instruction
2c: 5b pop %rbx
2d: 5d pop %rbp
2e: 41 5c pop %r12
30: 41 5d pop %r13
32: c3 retq
33: 48 83 f8 40 cmp $0x40,%rax
37: bb 07 00 00 00 mov $0x7,%ebx
3c: 0f .byte 0xf
3d: 84 .byte 0x84
3e: 6c insb (%dx),%es:(%rdi)
3f: ff .byte 0xff