INFO: task syz-executor.0:2498 blocked for more than 143 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27088 pid: 2498 ppid: 6519 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:680
__mutex_lock kernel/locking/mutex.c:740 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:792
io_uring_del_tctx_node+0xe4/0x2a9 fs/io_uring.c:9777
io_uring_clean_tctx+0x192/0x1d5 fs/io_uring.c:9793
io_uring_cancel_generic+0x624/0x661 fs/io_uring.c:9882
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+0x1740/0x2120 kernel/signal.c:2852
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: 0033:0x7f9e48ef4ae9
RSP: 002b:00007f9e46449188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffa2 RBX: 00007f9e49008020 RCX: 00007f9e48ef4ae9
RDX: 0000000000000004 RSI: 000000000000000a RDI: 000000000000000a
RBP: 00007f9e48f4ef6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf5afc4ef R14: 00007f9e46449300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1db40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6218:
#0: ffff8880199599f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
1 lock held by syz-executor.0/2490:
1 lock held by syz-executor.0/2498:
#0: ffff888083dda0a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0xe4/0x2a9 fs/io_uring.c:9777
1 lock held by syz-executor.0/2541:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc3-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:111
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2968 Comm: systemd-journal Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x84/0x2f0 mm/kasan/generic.c:189
Code: df 4d 01 ea 4d 89 d6 4d 29 ce 49 83 fe 10 7f 30 4d 85 f6 0f 84 ae 01 00 00 4c 89 cb 4c 29 d3 0f 1f 80 00 00 00 00 45 0f b6 19 <45> 84 db 0f 85 f3 01 00 00 49 ff c1 48 ff c3 75 eb e9 87 01 00 00
RSP: 0018:ffffc9000282f330 EFLAGS: 00000293
RAX: 1ffff92000505e01 RBX: fffffffffffffffe RCX: ffffffff813abe21
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc9000282f490
RBP: ffffc9000282f490 R08: dffffc0000000000 R09: fffff52000505e92
R10: fffff52000505e94 R11: 0000000000000000 R12: 1ffff92000505e92
R13: dffffc0000000001 R14: 0000000000000002 R15: ffffffff8e81566a
FS: 00007f25b332d8c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f25b0ab0000 CR3: 000000001b764000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
memset+0x1f/0x40 mm/kasan/shadow.c:44
unwind_next_frame+0xaa1/0x1fc0 arch/x86/kernel/unwind_orc.c:541
arch_stack_walk+0x112/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0xb6/0xf0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:259 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3234 [inline]
slab_alloc mm/slub.c:3242 [inline]
kmem_cache_alloc+0x1c9/0x310 mm/slub.c:3247
kmem_cache_zalloc include/linux/slab.h:714 [inline]
__alloc_file+0x26/0x2f0 fs/file_table.c:101
alloc_empty_file+0xa9/0x1b0 fs/file_table.c:150
path_openat+0x111/0x3660 fs/namei.c:3545
do_filp_open+0x277/0x4f0 fs/namei.c:3586
do_sys_openat2+0x13b/0x500 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_open fs/open.c:1236 [inline]
__se_sys_open fs/open.c:1232 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1232
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: 0033:0x7f25b28bc840
Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24
RSP: 002b:00007fff6bd5bc38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fff6bd5bf40 RCX: 00007f25b28bc840
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000560e78b5cbe0
RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000560e78b52040 R14: 00007fff6bd5bf00 R15: 0000560e78b5ca00
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 4d 01 ea add %r13,%r10
3: 4d 89 d6 mov %r10,%r14
6: 4d 29 ce sub %r9,%r14
9: 49 83 fe 10 cmp $0x10,%r14
d: 7f 30 jg 0x3f
f: 4d 85 f6 test %r14,%r14
12: 0f 84 ae 01 00 00 je 0x1c6
18: 4c 89 cb mov %r9,%rbx
1b: 4c 29 d3 sub %r10,%rbx
1e: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
25: 45 0f b6 19 movzbl (%r9),%r11d
* 29: 45 84 db test %r11b,%r11b <-- trapping instruction
2c: 0f 85 f3 01 00 00 jne 0x225
32: 49 ff c1 inc %r9
35: 48 ff c3 inc %rbx
38: 75 eb jne 0x25
3a: e9 87 01 00 00 jmpq 0x1c6