IPVS: ftp: loaded support on port[0] = 21
watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [kworker/u4:1:6611]
Modules linked in:
irq event stamp: 409822027
hardirqs last  enabled at (409822026): [<ffffffff81003ce4>] trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (409822027): [<ffffffff81003d00>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last  enabled at (409817490): [<ffffffff87b87bb1>] tipc_shutdown+0x121/0x310 net/tipc/socket.c:2581
softirqs last disabled at (409817492): [<ffffffff87ba2853>] spin_lock_bh include/linux/spinlock.h:334 [inline]
softirqs last disabled at (409817492): [<ffffffff87ba2853>] tipc_topsrv_stop net/tipc/topsrv.c:702 [inline]
softirqs last disabled at (409817492): [<ffffffff87ba2853>] tipc_topsrv_exit_net+0x283/0x5c0 net/tipc/topsrv.c:722
CPU: 1 PID: 6611 Comm: kworker/u4:1 Not tainted 4.19.192-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0x20 kernel/kcov.c:188
Code: 84 00 00 00 00 00 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 ec fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 ce fe ff ff 66 66 2e 0f 1f 84 00 00
RSP: 0018:ffff88804925fbd8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000028cb4bda RCX: ffffffff87ba287d
RDX: 0000000000000000 RSI: 000000000000007a RDI: 0000000000000000
RBP: ffff8880aeef8540 R08: 0000000000000001 R09: 0000000028cb4bd9
R10: 0000000000000006 R11: 0000000000000000 R12: ffff8880aeef8590
R13: ffffed1015ddf0b9 R14: ffff88803790b580 R15: 000000000000007a
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000970004 CR3: 000000009a696000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tipc_topsrv_stop net/tipc/topsrv.c:697 [inline]
 tipc_topsrv_exit_net+0x2ad/0x5c0 net/tipc/topsrv.c:722
 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153
 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553
 process_one_work+0x864/0x1570 kernel/workqueue.c:2152
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2295
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60