INFO: task syz-executor.5:17552 blocked for more than 143 seconds.
Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27432 pid:17552 ppid: 3650 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
schedule+0xd2/0x1f0 kernel/sched/core.c:6460
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x373/0x530 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:10391 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10461
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+0x19/0x60 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fa8c78890e9
RSP: 002b:00007fa8c8943218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fa8c799bf68 RCX: 00007fa8c78890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa8c799bf68
RBP: 00007fa8c799bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa8c799bf6c
R13: 00007fa8c7ecfb1f R14: 00007fa8c8943300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd820e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by getty/3276:
#0: ffff88801e0e2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002ce62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91 #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+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:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5913 Comm: kworker/u4:16 Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4288 [inline]
RIP: 0010:lockdep_hardirqs_on_prepare+0x20c/0x400 kernel/locking/lockdep.c:4246
Code: fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 0f b6 14 11 38 c2 7f 08 84 d2 0f 85 de 00 00 00 80 3d 22 ac 5b 0c 00 0f 85 4f 01 00 00 <65> 8b 05 45 2f a5 7e 85 c0 0f 84 96 fe ff ff e8 f0 17 97 02 85 c0
RSP: 0018:ffffc9000865fbc8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 1ffffffff1b71e79
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8147ce10
RBP: ffffffff8147ce10 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff817f8958 R11: 0000000000000000 R12: ffff888049e81828
R13: ffff888049e80d00 R14: dffffc0000000000 R15: ffffffff8907a690
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00c8d2ce0 CR3: 00000000189f2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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_nc_purge_paths+0x2a5/0x3a0 net/batman-adv/network-coding.c:471
batadv_nc_worker+0x930/0xfa0 net/batman-adv/network-coding.c:722
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
----------------
Code disassembly (best guess), 2 bytes skipped:
0: df 48 89 fisttps -0x77(%rax)
3: c1 83 e0 07 48 c1 e9 roll $0xe9,-0x3eb7f820(%rbx)
a: 03 0f add (%rdi),%ecx
c: b6 14 mov $0x14,%dh
e: 11 38 adc %edi,(%rax)
10: c2 7f 08 retq $0x87f
13: 84 d2 test %dl,%dl
15: 0f 85 de 00 00 00 jne 0xf9
1b: 80 3d 22 ac 5b 0c 00 cmpb $0x0,0xc5bac22(%rip) # 0xc5bac44
22: 0f 85 4f 01 00 00 jne 0x177
* 28: 65 8b 05 45 2f a5 7e mov %gs:0x7ea52f45(%rip),%eax # 0x7ea52f74 <-- trapping instruction
2f: 85 c0 test %eax,%eax
31: 0f 84 96 fe ff ff je 0xfffffecd
37: e8 f0 17 97 02 callq 0x297182c
3c: 85 c0 test %eax,%eax