INFO: task syz-executor.0:20571 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:25808 pid:20571 ppid: 6490 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6250
schedule+0x12b/0x1f0 kernel/sched/core.c:6323
io_uring_cancel_generic+0x5b3/0x661 fs/io_uring.c:9850
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x281/0x24f0 kernel/exit.c:787
do_group_exit+0x168/0x2d0 kernel/exit.c:929
get_signal+0x16b0/0x2090 kernel/signal.c:2820
arch_do_signal_or_restart+0x9c/0x730 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+0x191/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f774c1cbae9
RSP: 002b:00007f7749741218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f774c2def68 RCX: 00007f774c1cbae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f774c2def68
RBP: 00007f774c2def60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f774c2def6c
R13: 00007ffde8ae131f R14: 00007f7749741300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1d880 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6148:
#0: ffff888018da85f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2933 Comm: systemd-journal Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:91 [inline]
RIP: 0010:lock_is_held_type+0x3d/0x190 kernel/locking/lockdep.c:5661
Code: 28 00 00 00 48 89 44 24 08 bb ff ff ff ff 83 3d bc c5 fd 03 00 0f 84 0c 01 00 00 65 8b 05 db 1d 03 76 85 c0 0f 85 fd 00 00 00 <65> 4c 8b 2c 25 c0 6f 02 00 41 83 bd 5c 0a 00 00 00 0f 85 e6 00 00
RSP: 0018:ffffc9000292f5f8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8cb1d8e0
RBP: ffffc9000292f758 R08: dffffc0000000000 R09: fffffbfff1bf9dae
R10: fffffbfff1bf9dae R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000368 R14: ffffffff8c418c1a R15: 1ffff92000525ed0
FS: 00007f0d4d1be8c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0d4a701018 CR3: 000000007b2fc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:283 [inline]
__might_resched+0x96/0x790 kernel/sched/core.c:9501
dput+0x40/0x6e0 fs/dcache.c:872
__traverse_mounts fs/namei.c:1340 [inline]
traverse_mounts+0x407/0x690 fs/namei.c:1385
handle_mounts fs/namei.c:1494 [inline]
step_into+0x1e0/0x1f90 fs/namei.c:1800
walk_component+0x33a/0x790 fs/namei.c:1976
link_path_walk+0x697/0xd00
path_lookupat+0xab/0x6c0 fs/namei.c:2448
filename_lookup+0x270/0x640 fs/namei.c:2478
user_path_at_empty+0x40/0x1a0 fs/namei.c:2801
user_path_at include/linux/namei.h:57 [inline]
do_faccessat+0x43f/0x940 fs/open.c:421
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0d4c4799c7
Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007fff010d2658 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007fff010d5570 RCX: 00007f0d4c4799c7
RDX: 00007f0d4ceeaa00 RSI: 0000000000000000 RDI: 000055c1f97a29a3
RBP: 00007fff010d2690 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fff010d5570 R15: 00007fff010d2b80
----------------
Code disassembly (best guess):
0: 28 00 sub %al,(%rax)
2: 00 00 add %al,(%rax)
4: 48 89 44 24 08 mov %rax,0x8(%rsp)
9: bb ff ff ff ff mov $0xffffffff,%ebx
e: 83 3d bc c5 fd 03 00 cmpl $0x0,0x3fdc5bc(%rip) # 0x3fdc5d1
15: 0f 84 0c 01 00 00 je 0x127
1b: 65 8b 05 db 1d 03 76 mov %gs:0x76031ddb(%rip),%eax # 0x76031dfd
22: 85 c0 test %eax,%eax
24: 0f 85 fd 00 00 00 jne 0x127
* 2a: 65 4c 8b 2c 25 c0 6f mov %gs:0x26fc0,%r13 <-- trapping instruction
31: 02 00
33: 41 83 bd 5c 0a 00 00 cmpl $0x0,0xa5c(%r13)
3a: 00
3b: 0f .byte 0xf
3c: 85 e6 test %esp,%esi