watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u4:2:34]
Modules linked in:
irq event stamp: 484353
hardirqs last enabled at (484352): [<ffffffff87400976>] restore_regs_and_return_to_kernel+0x0/0x2a
hardirqs last disabled at (484353): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793
softirqs last enabled at (479462): [<ffffffff86d1b18d>] tipc_unregister_callbacks net/tipc/server.c:192 [inline]
softirqs last enabled at (479462): [<ffffffff86d1b18d>] tipc_close_conn+0xdd/0x200 net/tipc/server.c:200
softirqs last disabled at (479464): [<ffffffff86cdeb32>] spin_lock_bh include/linux/spinlock.h:322 [inline]
softirqs last disabled at (479464): [<ffffffff86cdeb32>] tipc_subscrb_subscrp_delete+0x32/0x330 net/tipc/subscr.c:201
CPU: 0 PID: 34 Comm: kworker/u4:2 Not tainted 4.14.260-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: tipc_send tipc_send_work
task: ffff8880b56b61c0 task.stack: ffff8880b56b8000
RIP: 0010:__read_once_size include/linux/compiler.h:185 [inline]
RIP: 0010:lock_timer_base+0xaa/0x190 kernel/time/timer.c:918
RSP: 0018:ffff8880b56bfae8 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: ffff8880b56b61c0 RBX: 00000000010c0008 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8880b56bfb58 RDI: ffff8880b0538b18
RBP: ffff8880b0538b18 R08: ffffffff8c070d08 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0538b18
R13: ffffed10160a7168 R14: ffff8880b56bfb58 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e428000 CR3: 0000000008e6a000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
del_timer kernel/time/timer.c:1154 [inline]
del_timer+0x8b/0xe0 kernel/time/timer.c:1145
tipc_subscrb_subscrp_delete+0x13a/0x330 net/tipc/subscr.c:207
tipc_subscrb_delete net/tipc/subscr.c:238 [inline]
tipc_subscrb_release_cb+0x13/0x20 net/tipc/subscr.c:316
tipc_close_conn+0x16a/0x200 net/tipc/server.c:203
tipc_send_to_sock net/tipc/server.c:538 [inline]
tipc_send_work+0x41e/0x520 net/tipc/server.c:564
process_one_work+0x793/0x14a0 kernel/workqueue.c:2117
worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 00 00 41 39 5c 24 28 0f 84 99 00 00 00 48 89 74 24 08 e8 4a 40 0d 00 48 8b 74 24 08 48 89 ef e8 2d 00 dc 05 e8 38 40 0d 00 f3 90 <e8> 31 40 0d 00 48 8b 04 24 41 0f b6 55 00 83 e0 07 83 c0 03 38
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff8723ed1e
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 41 39 5c 24 28 cmp %ebx,0x28(%r12)
7: 0f 84 99 00 00 00 je 0xa6
d: 48 89 74 24 08 mov %rsi,0x8(%rsp)
12: e8 4a 40 0d 00 callq 0xd4061
17: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
1c: 48 89 ef mov %rbp,%rdi
1f: e8 2d 00 dc 05 callq 0x5dc0051
24: e8 38 40 0d 00 callq 0xd4061
29: f3 90 pause
* 2b: e8 31 40 0d 00 callq 0xd4061 <-- trapping instruction
30: 48 8b 04 24 mov (%rsp),%rax
34: 41 0f b6 55 00 movzbl 0x0(%r13),%edx
39: 83 e0 07 and $0x7,%eax
3c: 83 c0 03 add $0x3,%eax
3f: 38 .byte 0x38