INFO: task syz-executor.1:18445 blocked for more than 143 seconds.
Not tainted 5.18.0-rc1-syzkaller-00259-g6c7376da2358 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27688 pid:18445 ppid: 3637 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+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: 0033:0x7f1d53289049
RSP: 002b:00007f1d543e5218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f1d5339bf68 RCX: 00007f1d53289049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f1d5339bf68
RBP: 00007f1d5339bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1d5339bf6c
R13: 00007f1d538cfb1f R14: 00007f1d543e5300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd81ee0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
5 locks held by kworker/u4:2/45:
3 locks held by syslogd/2944:
2 locks held by getty/3277:
#0: ffff888148a22098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e632e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
1 lock held by iou-wrk-18445/18449:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc1-syzkaller-00259-g6c7376da2358 #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18449 Comm: iou-wrk-18445 Not tainted 5.18.0-rc1-syzkaller-00259-g6c7376da2358 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_preemption_disabled+0xe/0x170 lib/smp_processor_id.c:14
Code: 3c 25 00 70 02 00 e8 b1 de f9 f7 eb 99 0f 1f 44 00 00 0f 0b e9 23 ff ff ff cc cc cc 41 56 41 55 49 89 f5 41 54 55 48 89 fd 53 <0f> 1f 44 00 00 65 44 8b 25 35 34 a2 76 65 8b 1d 1e 8a a2 76 81 e3
RSP: 0018:ffffc9000b4bf6c0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff89cc5b20 RDI: ffffffff8a26b7e0
RBP: ffffffff8a26b7e0 R08: 0000000000000000 R09: ffff888011bc07cf
R10: ffffffff83bd81c6 R11: 0000000000000000 R12: ffff88807f2e3a00
R13: ffffffff89cc5b20 R14: 00000000ffffffff R15: ffff88805a026c00
FS: 00007f1d543e5700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056124a808600 CR3: 000000004bb61000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 00000000e08e0077 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:436 [inline]
lock_is_held_type+0xd7/0x140 kernel/locking/lockdep.c:5685
lock_is_held include/linux/lockdep.h:283 [inline]
__might_resched+0x3a/0x2c0 kernel/sched/core.c:9695
begin_current_label_crit_section security/apparmor/include/cred.h:164 [inline]
aa_sk_perm+0x182/0xaa0 security/apparmor/net.c:173
security_socket_recvmsg+0x5c/0xc0 security/security.c:2229
sock_recvmsg net/socket.c:964 [inline]
sock_read_iter+0x2c7/0x470 net/socket.c:1039
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: 3c 25 cmp $0x25,%al
2: 00 70 02 add %dh,0x2(%rax)
5: 00 e8 add %ch,%al
7: b1 de mov $0xde,%cl
9: f9 stc
a: f7 eb imul %ebx
c: 99 cltd
d: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
12: 0f 0b ud2
14: e9 23 ff ff ff jmpq 0xffffff3c
19: cc int3
1a: cc int3
1b: cc int3
1c: 41 56 push %r14
1e: 41 55 push %r13
20: 49 89 f5 mov %rsi,%r13
23: 41 54 push %r12
25: 55 push %rbp
26: 48 89 fd mov %rdi,%rbp
29: 53 push %rbx
* 2a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction
2f: 65 44 8b 25 35 34 a2 mov %gs:0x76a23435(%rip),%r12d # 0x76a2346c
36: 76
37: 65 8b 1d 1e 8a a2 76 mov %gs:0x76a28a1e(%rip),%ebx # 0x76a28a5c
3e: 81 .byte 0x81
3f: e3 .byte 0xe3