INFO: task syz-executor.4:27095 blocked for more than 143 seconds.
Not tainted 5.18.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27408 pid:27095 ppid: 3635 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6382
schedule+0xd2/0x1f0 kernel/sched/core.c:6454
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
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:10599 [inline]
io_uring_cancel_generic+0x60b/0x695 fs/io_uring.c:10669
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+0x88/0x1a10 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+0x42/0x80 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f9a79689049
RSP: 002b:00007f9a7a7bb218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f9a7979bf68 RCX: 00007f9a79689049
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f9a7979bf6c
RBP: 00007f9a7979bf60 R08: 00007ffccfdc2080 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 00007f9a7979bf6c
R13: 00007ffccfdb472f R14: 00007f9a7a7bb300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd81da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
1 lock held by klogd/2951:
2 locks held by getty/3279:
#0: ffff888149092098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e662e8 (&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: 28 Comm: khungtaskd Not tainted 5.18.0-rc1-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: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: 27098 Comm: iou-wrk-27095 Not tainted 5.18.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__kasan_check_read+0x4/0x10 mm/kasan/shadow.c:31
Code: 0f 0b 48 83 c4 60 5b 5d 41 5c c3 48 05 00 80 00 00 48 89 fb 48 39 c7 0f 82 77 e2 57 07 eb e1 cc cc cc cc cc cc cc 48 8b 0c 24 <89> f6 31 d2 e9 b3 fa ff ff 0f 1f 00 48 8b 0c 24 89 f6 ba 01 00 00
RSP: 0018:ffffc90015727348 EFLAGS: 00000012
RAX: 0000000000000013 RBX: 1ffff92002ae4e71 RCX: ffffffff815cdf4e
RDX: 00000000000004c3 RSI: 0000000000000008 RDI: ffffffff90029998
RBP: 0000000000000080 R08: 0000000000000000 R09: ffffffff9002999f
R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880232e8a60
R13: 0000000000000007 R14: 00000000000004c3 R15: ffff8880232e8a80
FS: 00007f9a7a7bb700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00e69abe0 CR3: 000000002133b000 CR4: 0000000000350ee0
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
hlock_class kernel/locking/lockdep.c:197 [inline]
mark_lock.part.0+0xee/0x1910 kernel/locking/lockdep.c:4585
mark_lock kernel/locking/lockdep.c:4571 [inline]
mark_usage kernel/locking/lockdep.c:4520 [inline]
__lock_acquire+0x893/0x56c0 kernel/locking/lockdep.c:4983
lock_acquire kernel/locking/lockdep.c:5641 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5606
__ldsem_down_read_nested+0xa5/0x850 drivers/tty/tty_ldsem.c:300
tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
tty_read+0x1a2/0x5d0 drivers/tty/tty_io.c:928
call_read_iter include/linux/fs.h:2044 [inline]
io_iter_do_read fs/io_uring.c:3824 [inline]
io_read+0x32a/0x1290 fs/io_uring.c:3894
io_issue_sqe+0x815/0x87e0 fs/io_uring.c:7253
io_wq_submit_work+0x1ed/0x590 fs/io_uring.c:7421
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: 0f 0b ud2
2: 48 83 c4 60 add $0x60,%rsp
6: 5b pop %rbx
7: 5d pop %rbp
8: 41 5c pop %r12
a: c3 retq
b: 48 05 00 80 00 00 add $0x8000,%rax
11: 48 89 fb mov %rdi,%rbx
14: 48 39 c7 cmp %rax,%rdi
17: 0f 82 77 e2 57 07 jb 0x757e294
1d: eb e1 jmp 0x0
1f: cc int3
20: cc int3
21: cc int3
22: cc int3
23: cc int3
24: cc int3
25: cc int3
26: 48 8b 0c 24 mov (%rsp),%rcx
* 2a: 89 f6 mov %esi,%esi <-- trapping instruction
2c: 31 d2 xor %edx,%edx
2e: e9 b3 fa ff ff jmpq 0xfffffae6
33: 0f 1f 00 nopl (%rax)
36: 48 8b 0c 24 mov (%rsp),%rcx
3a: 89 f6 mov %esi,%esi
3c: ba .byte 0xba
3d: 01 00 add %eax,(%rax)