INFO: task syz-executor.3:16829 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.3 state:D stack:28496 pid:16829 ppid: 6502 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
io_uring_cancel_generic+0x53d/0x690 fs/io_uring.c:9850
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: 0033:0x7f34e07d1ae7
RSP: 002b:00007f34ddd26218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007f34e08e5028 RCX: 00007f34e07d1ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f34e08e5028
RBP: 00007f34e08e5020 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f34e08e502c
R13: 00007ffd34769ccf R14: 00007f34ddd26300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b983a20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6461
=============================================
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+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: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: 8653 Comm: kworker/u4:6 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:13 [inline]
RIP: 0010:lock_acquire+0xc5/0x510 kernel/locking/lockdep.c:5611
Code: 08 00 00 00 48 89 d0 48 89 54 24 08 48 c1 f8 06 48 8d 3c c5 d0 c1 6f 8d e8 78 8b 61 00 48 8b 54 24 08 48 0f a3 15 fb e1 12 0c <0f> 82 64 03 00 00 48 c7 c0 0c f6 6f 8d 48 ba 00 00 00 00 00 fc ff
RSP: 0018:ffffc9001870fba0 EFLAGS: 00000247
RAX: 0000000000000001 RBX: 1ffff920030e1f76 RCX: ffffffff815cdfc8
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d6fc1d0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8d6fc1d7
R10: fffffbfff1adf83a R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8b983a20 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0042f11000 CR3: 000000007269c000 CR4: 0000000000350ef0
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:723
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 08 00 or %al,(%rax)
2: 00 00 add %al,(%rax)
4: 48 89 d0 mov %rdx,%rax
7: 48 89 54 24 08 mov %rdx,0x8(%rsp)
c: 48 c1 f8 06 sar $0x6,%rax
10: 48 8d 3c c5 d0 c1 6f lea -0x72903e30(,%rax,8),%rdi
17: 8d
18: e8 78 8b 61 00 callq 0x618b95
1d: 48 8b 54 24 08 mov 0x8(%rsp),%rdx
22: 48 0f a3 15 fb e1 12 bt %rdx,0xc12e1fb(%rip) # 0xc12e225
29: 0c
* 2a: 0f 82 64 03 00 00 jb 0x394 <-- trapping instruction
30: 48 c7 c0 0c f6 6f 8d mov $0xffffffff8d6ff60c,%rax
37: 48 rex.W
38: ba 00 00 00 00 mov $0x0,%edx
3d: 00 fc add %bh,%ah
3f: ff .byte 0xff