INFO: task syz-executor.1:25464 blocked for more than 145 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26536 pid:25464 ppid: 8477 flags:0x00024004
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:9877
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_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f22461e8ae7
RSP: 002b:00007f224375e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007f22462fbf68 RCX: 00007f22461e8ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f22462fbf68
RBP: 00007f22462fbf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f22462fbf6c
R13: 00007fffcb8117bf R14: 00007f224375e300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb80fe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by in:imklog/6234:
#0: ffff888071f02e30 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
#1: ffff8880b9c39b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
=============================================
NMI backtrace for cpu 1
CPU: 1 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+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: 2961 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:__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:ffffc90001ca7968 EFLAGS: 00000003
RAX: 0000000000000001 RBX: ffffffff8da5539c RCX: ffffffff81bd1e6f
RDX: 0000000000000003 RSI: ffffffff8e178a3e RDI: ffffffff8da5536c
RBP: ffffffff8da553a0 R08: ffffffff8e178a3e R09: 0000000000000001
R10: fffff52000394f5c R11: 000000000008808a R12: ffffffff8da553ac
R13: ffffffff8da5536c R14: ffffffff8da5539c R15: dffffc0000000000
FS: 00007f2a2d56b8c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2a2ae47000 CR3: 00000000771cf000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:173 [inline]
unwind_next_frame+0x32a/0x1ce0 arch/x86/kernel/unwind_orc.c:443
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
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+0xd1/0x110 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:235 [inline]
__cache_free mm/slab.c:3445 [inline]
kmem_cache_free.part.0+0x91/0x200 mm/slab.c:3741
putname fs/namei.c:270 [inline]
putname+0xfe/0x140 fs/namei.c:256
do_mkdirat+0x1cd/0x300 fs/namei.c:3918
__do_sys_mkdir fs/namei.c:3929 [inline]
__se_sys_mkdir fs/namei.c:3927 [inline]
__x64_sys_mkdir+0xf2/0x140 fs/namei.c:3927
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: 0033:0x7f2a2c826687
Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffe9280ec28 EFLAGS: 00000293 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ffe92811b40 RCX: 00007f2a2c826687
RDX: 00007f2a2d297a00 RSI: 00000000000001ed RDI: 0000561f7fce08c0
RBP: 00007ffe9280ec60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffe92811b40 R15: 00007ffe9280f150
----------------
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