INFO: task syz-executor.3:12422 blocked for more than 143 seconds.
Not tainted 5.18.0-rc1-next-20220408-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27104 pid:12422 ppid: 3624 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5106 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6421
schedule+0xd2/0x1f0 kernel/sched/core.c:6493
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x378/0x530 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10581 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10651
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2864
arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f910d689049
RSP: 002b:00007f910e822218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f910d79bf68 RCX: 00007f910d689049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f910d79bf68
RBP: 00007f910d79bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f910d79bf6c
R13: 00007fff6d751e9f R14: 00007f910e822300 R15: 0000000000022000
</TASK>
INFO: task iou-wrk-12422:12445 can't die for more than 143 seconds.
task:iou-wrk-12422 state:R running task stack:28128 pid:12445 ppid: 3624 flags:0x00024006
Call Trace:
<TASK>
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd83a20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
2 locks held by getty/3275:
#0: ffff888144eb2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e732e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
2 locks held by kworker/u4:11/4827:
#0: ffff8880b9d39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:541
#1: ffffc900038c7da8 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc1-next-20220408-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__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+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:256 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:413
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3890 Comm: kworker/u4:6 Not tainted 5.18.0-rc1-next-20220408-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_purge_orig
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:115 [inline]
RIP: 0010:lockdep_softirqs_on+0x22/0x340 kernel/locking/lockdep.c:4437
Code: 0f 1f 84 00 00 00 00 00 48 c7 c0 2c b6 b7 8d 41 54 49 89 fc 48 ba 00 00 00 00 00 fc ff df 48 89 c1 55 83 e0 07 48 c1 e9 03 53 <83> c0 03 0f b6 14 11 65 48 8b 1c 25 00 70 02 00 38 d0 7c 08 84 d2
RSP: 0018:ffffc90005207bb8 EFLAGS: 00000807
RAX: 0000000000000004 RBX: 0000000000000201 RCX: 1ffffffff1b6f6c5
RDX: dffffc0000000000 RSI: ffffffff81483a33 RDI: ffffffff88fef907
RBP: ffffffff88fef907 R08: 0000000000000000 R09: ffff888027636983
R10: ffffffff818053cd R11: 0000000000000000 R12: ffffffff88fef907
R13: ffffc90005207da8 R14: ffff88801f013600 R15: 00000000000001a6
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8098da7990 CR3: 000000007a197000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__local_bh_enable_ip+0xcd/0x120 kernel/softirq.c:371
spin_unlock_bh include/linux/spinlock.h:399 [inline]
batadv_purge_orig_ref+0xeb7/0x1550 net/batman-adv/originator.c:1259
batadv_purge_orig+0x17/0x60 net/batman-adv/originator.c:1272
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>
----------------
Code disassembly (best guess):
0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
8: 48 c7 c0 2c b6 b7 8d mov $0xffffffff8db7b62c,%rax
f: 41 54 push %r12
11: 49 89 fc mov %rdi,%r12
14: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
1b: fc ff df
1e: 48 89 c1 mov %rax,%rcx
21: 55 push %rbp
22: 83 e0 07 and $0x7,%eax
25: 48 c1 e9 03 shr $0x3,%rcx
29: 53 push %rbx
* 2a: 83 c0 03 add $0x3,%eax <-- trapping instruction
2d: 0f b6 14 11 movzbl (%rcx,%rdx,1),%edx
31: 65 48 8b 1c 25 00 70 mov %gs:0x27000,%rbx
38: 02 00
3a: 38 d0 cmp %dl,%al
3c: 7c 08 jl 0x46
3e: 84 d2 test %dl,%dl