INFO: task syz-executor.1:17457 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27304 pid:17457 ppid: 7701 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:9846
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:2830
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: 0033:0x7f5f46044ae9
RSP: 002b:00007f5f435ba218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f5f46157f68 RCX: 00007f5f46044ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5f46157f68
RBP: 00007f5f46157f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5f46157f6c
R13: 00007ffde4560b4f R14: 00007f5f435ba300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb80f60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
3 locks held by kworker/u4:5/1075:
#0: ffff8880b9d39b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9d279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x173/0x490 kernel/sched/psi.c:871
#2: ffffffff8bb80f60 (rcu_read_lock){....}-{1:2}, at: trace_sched_stat_runtime include/trace/events/sched.h:517 [inline]
#2: ffffffff8bb80f60 (rcu_read_lock){....}-{1:2}, at: update_curr+0x370/0x900 kernel/sched/fair.c:876
1 lock held by in:imklog/6301:
#0: ffff8880772f7db0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1075 Comm: kworker/u4:5 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:mark_held_locks+0x2d/0xe0 kernel/locking/lockdep.c:4194
Code: 00 00 00 00 fc ff df 41 56 41 55 41 54 49 89 fc 48 81 c7 58 0a 00 00 48 89 fa 55 89 f5 53 48 c1 ea 03 48 83 ec 08 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e 89 00 00 00 41 8b 84 24 58 0a 00 00 31 db
RSP: 0018:ffffc90004ca7be0 EFLAGS: 00000082
RAX: 0000000000000000 RBX: ffff88801cde2240 RCX: 1ffffffff1ffa2ee
RDX: 1ffff110039bc593 RSI: 0000000000000006 RDI: ffff88801cde2c98
RBP: 0000000000000006 R08: 0000000000000000 R09: ffffffff8ff79aef
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801cde2240
R13: ffff88807e597400 R14: ffff88806fe46000 R15: ffff88807e597800
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0097bb5f0 CR3: 000000000b88e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4232 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4292 [inline]
lockdep_hardirqs_on_prepare+0x28b/0x400 kernel/locking/lockdep.c:4244
trace_hardirqs_on+0x5b/0x1c0 kernel/trace/trace_preemptirq.c:49
__local_bh_enable_ip+0xa0/0x120 kernel/softirq.c:388
spin_unlock_bh include/linux/spinlock.h:394 [inline]
batadv_forw_packet_steal+0x112/0x180 net/batman-adv/send.c:588
batadv_iv_send_outstanding_bat_ogm_packet+0x282/0x8e0 net/batman-adv/bat_iv_ogm.c:1717
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), 6 bytes skipped:
0: df 41 56 filds 0x56(%rcx)
3: 41 55 push %r13
5: 41 54 push %r12
7: 49 89 fc mov %rdi,%r12
a: 48 81 c7 58 0a 00 00 add $0xa58,%rdi
11: 48 89 fa mov %rdi,%rdx
14: 55 push %rbp
15: 89 f5 mov %esi,%ebp
17: 53 push %rbx
18: 48 c1 ea 03 shr $0x3,%rdx
1c: 48 83 ec 08 sub $0x8,%rsp
20: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax
* 24: 84 c0 test %al,%al <-- trapping instruction
26: 74 08 je 0x30
28: 3c 03 cmp $0x3,%al
2a: 0f 8e 89 00 00 00 jle 0xb9
30: 41 8b 84 24 58 0a 00 mov 0xa58(%r12),%eax
37: 00
38: 31 db xor %ebx,%ebx