INFO: task syz-executor.4:5911 blocked for more than 143 seconds.
Not tainted 5.18.0-rc5-syzkaller-00016-g107c948d1d3e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27160 pid: 5911 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:10386 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10456
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: 0033:0x7fcd618890e9
RSP: 002b:00007fcd62a3e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fcd6199bf68 RCX: 00007fcd618890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fcd6199bf68
RBP: 00007fcd6199bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcd6199bf6c
R13: 00007fcd61ecfb1f R14: 00007fcd62a3e300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd821e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by kworker/u4:2/45:
2 locks held by getty/3278:
#0: ffff888148e2a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002ce62e8 (&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-rc5-syzkaller-00016-g107c948d1d3e #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: 5929 Comm: iou-wrk-5911 Not tainted 5.18.0-rc5-syzkaller-00016-g107c948d1d3e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:aa_file_perm+0x8e/0x1230 security/apparmor/file.c:600
Code: 04 00 00 00 f2 c7 40 08 00 00 00 f2 c7 40 0c f2 f2 00 00 c7 40 10 00 00 00 04 c7 40 14 f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 <48> 89 84 24 28 01 00 00 31 c0 e8 43 b6 b3 fd 4d 85 ed 0f 84 5c 0a
RSP: 0018:ffffc90002e0f768 EFLAGS: 00000282
RAX: 6aac915d1a1bd100 RBX: ffff888022cfaf00 RCX: 1ffff920005c1ef7
RDX: ffff888022cfaf00 RSI: ffff888010dbd2b0 RDI: ffffffff8a20f060
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000002000
R10: ffffffff83c460d8 R11: 00000000ffffc000 R12: ffff888022cfaf00
R13: ffff888010dbd2b0 R14: ffff888022cfaf00 R15: ffff888074b14b48
FS: 00007fcd62a3e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000357020 CR3: 000000001a235000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
common_file_perm security/apparmor/lsm.c:475 [inline]
apparmor_file_permission+0x15e/0x4e0 security/apparmor/lsm.c:489
security_file_permission+0x4d/0xd0 security/security.c:1523
rw_verify_area+0xae/0x1b0 fs/read_write.c:385
io_read+0x263/0x12b0 fs/io_uring.c:3855
io_issue_sqe+0x768/0x8a00 fs/io_uring.c:7138
io_wq_submit_work+0x22a/0x620 fs/io_uring.c:7313
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: 04 00 add $0x0,%al
2: 00 00 add %al,(%rax)
4: f2 c7 40 08 00 00 00 repnz movl $0xf2000000,0x8(%rax)
b: f2
c: c7 40 0c f2 f2 00 00 movl $0xf2f2,0xc(%rax)
13: c7 40 10 00 00 00 04 movl $0x4000000,0x10(%rax)
1a: c7 40 14 f3 f3 f3 f3 movl $0xf3f3f3f3,0x14(%rax)
21: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
28: 00 00
* 2a: 48 89 84 24 28 01 00 mov %rax,0x128(%rsp) <-- trapping instruction
31: 00
32: 31 c0 xor %eax,%eax
34: e8 43 b6 b3 fd callq 0xfdb3b67c
39: 4d 85 ed test %r13,%r13
3c: 0f .byte 0xf
3d: 84 .byte 0x84
3e: 5c pop %rsp
3f: 0a .byte 0xa