INFO: task syz-executor.2:15310 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28544 pid:15310 ppid: 6688 flags:0x20024004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
io_uring_cancel_generic+0x53d/0x690 fs/io_uring.c:9846
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x60c/0x2b40 kernel/exit.c:787
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x2220 kernel/signal.c:2852
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
__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: 0023:0xf6eb0547
RSP: 002b:00000000f446867c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0
RAX: 00000000000000f0 RBX: 00000000f700d0a0 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f700d0a4
RBP: 0000000000000081 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb83ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
3 locks held by in:imklog/6221:
#0: ffff88801932cff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
#1: ffff8880b9c39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#2: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a6/0x490 kernel/sched/psi.c:880
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc2-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+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
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: 2965 Comm: systemd-journal Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4716 [inline]
RIP: 0010:__lock_acquire+0x590/0x54a0 kernel/locking/lockdep.c:4977
Code: 49 8d ac c5 81 0a 00 00 eb 12 41 83 ee 01 48 83 ed 28 41 83 fe ff 0f 84 15 0b 00 00 48 8d 5d df 48 89 e8 48 89 e9 48 c1 e8 03 <83> e1 07 42 0f b6 04 00 38 c8 7f 08 84 c0 0f 85 f3 2b 00 00 0f b6
RSP: 0018:ffffc90000007680 EFLAGS: 00000806
RAX: 1ffff1100f5e3155 RBX: ffff88807af18a88 RCX: ffff88807af18aa9
RDX: 0000000000000020 RSI: 0000000000000004 RDI: ffffffff8ff73cd9
RBP: ffff88807af18aa9 R08: dffffc0000000000 R09: ffffffff8ff71a07
R10: fffffbfff1fee340 R11: 000000000008808a R12: ffff88807af18b00
R13: ffff88807af18000 R14: 0000000000000001 R15: 0000000000000020
FS: 00007f26f9e688c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f26f7354000 CR3: 000000001a9bb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
is_bpf_text_address+0x36/0x170 kernel/bpf/core.c:715
kernel_text_address kernel/extable.c:124 [inline]
kernel_text_address+0x39/0x80 kernel/extable.c:93
__kernel_text_address+0x9/0x30 kernel/extable.c:78
unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
__kasan_record_aux_stack+0xf5/0x120 mm/kasan/generic.c:348
insert_work+0x48/0x370 kernel/workqueue.c:1354
__queue_work+0x5ca/0xee0 kernel/workqueue.c:1520
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1461 [inline]
__run_timers.part.0+0x49f/0xa20 kernel/time/timer.c:1734
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:vsnprintf+0xaa/0x14f0 lib/vsprintf.c:2750
Code: 76 fd 48 89 de bf ff ff ff 7f 48 c7 44 24 68 00 00 00 00 e8 d8 8f 76 fd 48 81 fb ff ff ff 7f 0f 87 95 0e 00 00 e8 36 8d 76 fd <48> 8b 44 24 20 48 03 44 24 28 48 89 44 24 18 73 1b e8 20 8d 76 fd
RSP: 0018:ffffc90001f4fad0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000002000 RCX: 0000000000000000
RDX: ffff88807af18000 RSI: ffffffff84010c2a RDI: 0000000000000003
RBP: ffffffff89accfa0 R08: 000000007fffffff R09: 00000000208fecac
R10: ffffffff84010c18 R11: 0000000000000000 R12: 0000000000002000
R13: ffff88807aad00f8 R14: ffffffff89accfa0 R15: ffffc90001f4fbd0
vscnprintf lib/vsprintf.c:2908 [inline]
scnprintf+0xbb/0x140 lib/vsprintf.c:2962
info_print_ext_header.constprop.0+0x1eb/0x280 kernel/printk/printk.c:567
devkmsg_read+0x3c9/0x730 kernel/printk/printk.c:749
vfs_read+0x1b5/0x600 fs/read_write.c:479
ksys_read+0x12d/0x250 fs/read_write.c:619
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: 0033:0x7f26f93f7210
Code: 73 01 c3 48 8b 0d 98 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d b9 c1 20 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24
RSP: 002b:00007fff6233a2a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fff6233cd20 RCX: 00007f26f93f7210
RDX: 0000000000002000 RSI: 00007fff6233ab20 RDI: 0000000000000009
RBP: 0000000000000000 R08: 0000000000000008 R09: 00007fff623c4080
R10: 00007fff623c40f0 R11: 0000000000000246 R12: 00007fff6233ab20
R13: 00007fff6233cc78 R14: 0000557ba694d958 R15: 0005d170755f4c0c
----------------
Code disassembly (best guess):
0: 49 8d ac c5 81 0a 00 lea 0xa81(%r13,%rax,8),%rbp
7: 00
8: eb 12 jmp 0x1c
a: 41 83 ee 01 sub $0x1,%r14d
e: 48 83 ed 28 sub $0x28,%rbp
12: 41 83 fe ff cmp $0xffffffff,%r14d
16: 0f 84 15 0b 00 00 je 0xb31
1c: 48 8d 5d df lea -0x21(%rbp),%rbx
20: 48 89 e8 mov %rbp,%rax
23: 48 89 e9 mov %rbp,%rcx
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 83 e1 07 and $0x7,%ecx <-- trapping instruction
2d: 42 0f b6 04 00 movzbl (%rax,%r8,1),%eax
32: 38 c8 cmp %cl,%al
34: 7f 08 jg 0x3e
36: 84 c0 test %al,%al
38: 0f 85 f3 2b 00 00 jne 0x2c31
3e: 0f .byte 0xf
3f: b6 .byte 0xb6