INFO: task syz-executor.3:28948 blocked for more than 143 seconds.
Not tainted 5.18.0-rc4-syzkaller-00050-g46cf2c613f4b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27360 pid:28948 ppid: 3640 flags:0x00004004
Call Trace:
<TASK>
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: 0033:0x7ffbf72890e9
RSP: 002b:00007ffbf84bb0e8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9
RAX: 0000000000000015 RBX: 00007ffbf739bf60 RCX: 00007ffbf72890e9
RDX: 0000000020ffd000 RSI: 0000000020000240 RDI: 0000000000003ede
RBP: 0000000020000240 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000020000140
R13: 0000000020ffd000 R14: 0000000020000100 R15: 0000000020002000
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd820e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by getty/3284:
#0: ffff88814ce48098 (&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
1 lock held by iou-wrk-28948/28967:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc4-syzkaller-00050-g46cf2c613f4b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__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
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 28967 Comm: iou-wrk-28948 Not tainted 5.18.0-rc4-syzkaller-00050-g46cf2c613f4b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hlock_class kernel/locking/lockdep.c:192 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4727 [inline]
RIP: 0010:__lock_acquire+0x6d1/0x56c0 kernel/locking/lockdep.c:4979
Code: c4 48 8d 04 80 49 8d 1c c6 48 8d 7b 20 48 89 fa 48 c1 ea 03 42 0f b6 14 3a 84 d2 74 09 80 fa 03 0f 8e 2f 2c 00 00 0f b7 53 20 <66> 81 e2 ff 1f 0f b7 da be 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d
RSP: 0018:ffffc900145f7478 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88807a2c8a60 RCX: 0000000000000001
RDX: 0000000000000b0f RSI: 0000000000000001 RDI: ffff88807a2c8a80
RBP: 0000000000000004 R08: dffffc0000000000 R09: ffffffff90058a67
R10: fffffbfff200b14c R11: 0000000000000001 R12: 0000000000000000
R13: ffff88807a2c8000 R14: ffff88807a2c8a60 R15: dffffc0000000000
FS: 00007ffbf84bb700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f689956a990 CR3: 0000000044346000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
lock_acquire kernel/locking/lockdep.c:5641 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5606
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:354 [inline]
release_sock+0x1b/0x1b0 net/core/sock.c:3325
rxrpc_recvmsg+0x400/0x16c0 net/rxrpc/recvmsg.c:514
sock_recvmsg_nosec net/socket.c:948 [inline]
sock_recvmsg net/socket.c:966 [inline]
sock_recvmsg net/socket.c:962 [inline]
sock_read_iter+0x336/0x470 net/socket.c:1039
call_read_iter include/linux/fs.h:2044 [inline]
io_iter_do_read fs/io_uring.c:3742 [inline]
io_read+0x2f7/0x12b0 fs/io_uring.c:3860
io_issue_sqe+0x768/0x8a00 fs/io_uring.c:7133
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
</TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 48 8d 04 80 lea (%rax,%rax,4),%rax
4: 49 8d 1c c6 lea (%r14,%rax,8),%rbx
8: 48 8d 7b 20 lea 0x20(%rbx),%rdi
c: 48 89 fa mov %rdi,%rdx
f: 48 c1 ea 03 shr $0x3,%rdx
13: 42 0f b6 14 3a movzbl (%rdx,%r15,1),%edx
18: 84 d2 test %dl,%dl
1a: 74 09 je 0x25
1c: 80 fa 03 cmp $0x3,%dl
1f: 0f 8e 2f 2c 00 00 jle 0x2c54
25: 0f b7 53 20 movzwl 0x20(%rbx),%edx
* 29: 66 81 e2 ff 1f and $0x1fff,%dx <-- trapping instruction
2e: 0f b7 da movzwl %dx,%ebx
31: be 08 00 00 00 mov $0x8,%esi
36: 48 89 d8 mov %rbx,%rax
39: 48 c1 f8 06 sar $0x6,%rax
3d: 48 rex.W
3e: 8d .byte 0x8d