INFO: task syz-executor.0:6175 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-02172-g6b1f86f8e9c7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27576 pid: 6175 ppid: 3610 flags:0x20004004
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:1264 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1299
io_uring_clean_tctx fs/io_uring.c:10512 [inline]
io_uring_cancel_generic+0x60b/0x695 fs/io_uring.c:10582
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a30 kernel/exit.c:761
do_group_exit+0xd2/0x2f0 kernel/exit.c:936
get_signal+0x4b0/0x28c0 kernel/signal.c:2903
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:149 [inline]
exit_to_user_mode_loop kernel/entry/common.c:187 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:222
__syscall_exit_to_user_mode_work kernel/entry/common.c:304 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:315
__do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7fbc549
RSP: 002b:00000000f7fb768c EFLAGS: 00000246 ORIG_RAX: 00000000000000f0
RAX: 0000000000000001 RBX: 00000000f6f5afac RCX: 0000000000000081
RDX: 00000000000f4240 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000f6e1a9c9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-02172-g6b1f86f8e9c7 #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:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2955 Comm: klogd Tainted: G W 5.17.0-syzkaller-02172-g6b1f86f8e9c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:format_decode+0x4c3/0xad0 lib/vsprintf.c:2591
Code: 24 b8 01 10 04 00 31 ff 48 d3 e8 83 e0 01 48 89 c6 48 89 04 24 e8 6d 14 67 fd 48 8b 04 24 48 83 f0 01 49 89 c7 e8 6d 10 67 fd <31> ff 44 89 fe e8 e3 12 67 fd 4d 85 ff 0f 85 59 fe ff ff e8 55 10
RSP: 0018:ffffc9000bb97818 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000073 RCX: 0000000000000000
RDX: ffff88807da55700 RSI: ffffffff8411a963 RDI: 0000000000000003
RBP: ffffc9000bb97930 R08: 0000000000000000 R09: 000000000000000b
R10: ffffffff8411a953 R11: 0000000000000012 R12: ffffffff89ad1523
R13: ffffffff89ad1521 R14: 1ffff92001772f06 R15: 0000000000000001
FS: 00007f4d5a9b5800(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dad892e680 CR3: 000000007f1e2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vsnprintf+0x155/0x1660 lib/vsprintf.c:2749
sprintf+0xc0/0x100 lib/vsprintf.c:2999
print_caller kernel/printk/printk.c:1272 [inline]
info_print_prefix+0x12e/0x340 kernel/printk/printk.c:1289
record_print_text+0x14d/0x3e0 kernel/printk/printk.c:1336
syslog_print+0x48a/0x580 kernel/printk/printk.c:1536
do_syslog.part.0+0x202/0x640 kernel/printk/printk.c:1655
do_syslog kernel/printk/printk.c:1745 [inline]
__do_sys_syslog kernel/printk/printk.c:1747 [inline]
__se_sys_syslog kernel/printk/printk.c:1745 [inline]
__x64_sys_syslog+0x97/0xc0 kernel/printk/printk.c:1745
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f4d5ab508b7
Code: 73 01 c3 48 8b 0d c1 05 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 05 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffe9669f6e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f4d5acdd490 RCX: 00007f4d5ab508b7
RDX: 00000000000003ff RSI: 00007f4d5acdd490 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 00005647ce1bf490
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f4d5acdd490
R13: 00007f4d5acdd4ec R14: 00007f4d5acdd4ec R15: 0000000000000000
----------------
Code disassembly (best guess):
0: 24 b8 and $0xb8,%al
2: 01 10 add %edx,(%rax)
4: 04 00 add $0x0,%al
6: 31 ff xor %edi,%edi
8: 48 d3 e8 shr %cl,%rax
b: 83 e0 01 and $0x1,%eax
e: 48 89 c6 mov %rax,%rsi
11: 48 89 04 24 mov %rax,(%rsp)
15: e8 6d 14 67 fd callq 0xfd671487
1a: 48 8b 04 24 mov (%rsp),%rax
1e: 48 83 f0 01 xor $0x1,%rax
22: 49 89 c7 mov %rax,%r15
25: e8 6d 10 67 fd callq 0xfd671097
* 2a: 31 ff xor %edi,%edi <-- trapping instruction
2c: 44 89 fe mov %r15d,%esi
2f: e8 e3 12 67 fd callq 0xfd671317
34: 4d 85 ff test %r15,%r15
37: 0f 85 59 fe ff ff jne 0xfffffe96
3d: e8 .byte 0xe8
3e: 55 push %rbp
3f: 10 .byte 0x10