INFO: task syz-executor.3:28543 blocked for more than 143 seconds.
Not tainted 5.15.0-rc7-next-20211029-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27288 pid:28543 ppid: 32622 flags:0x00024006
Call Trace:
context_switch kernel/sched/core.c:4984 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6265
schedule+0xd2/0x260 kernel/sched/core.c:6338
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
io_wq_exit_workers fs/io-wq.c:1176 [inline]
io_wq_put_and_exit+0x4b2/0xd20 fs/io-wq.c:1211
io_uring_clean_tctx fs/io_uring.c:9783 [inline]
io_uring_cancel_generic+0x61d/0x690 fs/io_uring.c:9864
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/0x21d0 kernel/signal.c:2820
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_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd90ea63ae9
RSP: 002b:00007fd90bfd9188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 00000000000001d3 RBX: 00007fd90eb76f60 RCX: 00007fd90ea63ae9
RDX: 0000000000007276 RSI: 00000000000001d3 RDI: 0000000000000004
RBP: 00007fd90eabdf25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3347df9f R14: 00007fd90bfd9300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b7839a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by khugepaged/33:
#0: ffffffff8b8687c8 (lock#5){+.+.}-{3:3}, at: __lru_add_drain_all+0x65/0x760 mm/swap.c:797
1 lock held by in:imklog/6173:
2 locks held by kworker/u4:10/10753:
#0: ffff8880b9d39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffffffff8b7839a0 (rcu_read_lock){....}-{1:2}, at: do_perf_sw_event kernel/events/core.c:9413 [inline]
#1: ffffffff8b7839a0 (rcu_read_lock){....}-{1:2}, at: ___perf_sw_event+0x137/0x570 kernel/events/core.c:9455
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc7-next-20211029-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:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2935 Comm: systemd-journal Not tainted 5.15.0-rc7-next-20211029-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__orc_find+0x5e/0xf0 arch/x86/kernel/unwind_orc.c:50
Code: 89 fe 48 89 fd eb 0c 48 8d 6b 04 49 89 de 49 39 ec 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 <48> 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0
RSP: 0018:ffffc90001a8f7d8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff92000351f0c RCX: ffffffff81343bd5
RDX: 0000000000000000 RSI: ffffffff8dbec27a RDI: ffffffff8d530424
RBP: ffffffff8d530424 R08: ffffffff8dbec27a R09: ffffc90001a8f948
R10: fffff52000351f34 R11: 0000000000084087 R12: ffffffff8d530424
R13: ffffffff8d530424 R14: ffffffff8d530424 R15: dffffc0000000000
FS: 00007f275844d8c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2752849000 CR3: 000000007f542000 CR4: 00000000003506e0
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:173 [inline]
unwind_next_frame+0x32a/0x1ce0 arch/x86/kernel/unwind_orc.c:443
__unwind_start+0x51b/0x800 arch/x86/kernel/unwind_orc.c:712
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x5c/0xe0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track+0x21/0x30 mm/kasan/common.c:46
kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
____kasan_slab_free mm/kasan/common.c:366 [inline]
____kasan_slab_free mm/kasan/common.c:328 [inline]
__kasan_slab_free+0xff/0x130 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1749
slab_free mm/slub.c:3513 [inline]
kmem_cache_free+0x92/0x5e0 mm/slub.c:3529
putname fs/namei.c:270 [inline]
putname+0xfe/0x140 fs/namei.c:256
do_sys_openat2+0x153/0x4d0 fs/open.c:1221
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+0x119/0x1c0 fs/open.c:1232
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: 0033:0x7f27579dc85d
Code: 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 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 67 f6 ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffc74d45520 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffc74d45830 RCX: 00007f27579dc85d
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055fed3bd2030
RBP: 000000000000000d R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000293 R12: 00000000ffffffff
R13: 000055fed3bc4040 R14: 00007ffc74d457f0 R15: 000055fed3bd2080
----------------
Code disassembly (best guess):
0: 89 fe mov %edi,%esi
2: 48 89 fd mov %rdi,%rbp
5: eb 0c jmp 0x13
7: 48 8d 6b 04 lea 0x4(%rbx),%rbp
b: 49 89 de mov %rbx,%r14
e: 49 39 ec cmp %rbp,%r12
11: 72 4d jb 0x60
13: 4c 89 e0 mov %r12,%rax
16: 48 29 e8 sub %rbp,%rax
19: 48 89 c2 mov %rax,%rdx
1c: 48 c1 e8 3f shr $0x3f,%rax
20: 48 c1 fa 02 sar $0x2,%rdx
24: 48 01 d0 add %rdx,%rax
27: 48 d1 f8 sar %rax
* 2a: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx <-- trapping instruction
2f: 48 89 d8 mov %rbx,%rax
32: 48 c1 e8 03 shr $0x3,%rax
36: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx
3b: 48 89 d8 mov %rbx,%rax
3e: 83 .byte 0x83
3f: e0 .byte 0xe0