watchdog: BUG: soft lockup - CPU#0 stuck for 42s! [kworker/0:6:7327]
Modules linked in:
irq event stamp: 113358
hardirqs last  enabled at (113357): [<ffffffff8140ffaf>] __local_bh_enable_ip+0x11f/0x220 kernel/softirq.c:203
hardirqs last disabled at (113358): [<ffffffff876b48ab>] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100
softirqs last  enabled at (113356): [<ffffffff85e8e0a3>] get_next_corpse net/netfilter/nf_conntrack_core.c:2197 [inline]
softirqs last  enabled at (113356): [<ffffffff85e8e0a3>] nf_ct_iterate_cleanup+0x73/0x270 net/netfilter/nf_conntrack_core.c:2245
softirqs last disabled at (113354): [<ffffffff85e8e0e5>] get_next_corpse net/netfilter/nf_conntrack_core.c:2197 [inline]
softirqs last disabled at (113354): [<ffffffff85e8e0e5>] nf_ct_iterate_cleanup+0xb5/0x270 net/netfilter/nf_conntrack_core.c:2245
CPU: 0 PID: 7327 Comm: kworker/0:6 Not tainted 5.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events iterate_cleanup_work
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x14f/0x220 kernel/softirq.c:205
Code: 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 bd 00 00 00 48 83 3d 2a f6 f5 07 00 74 4f fb 66 0f 1f 44 00 00 <65> 8b 05 9a fe c0 7e 85 c0 74 78 5b 5d 41 5c c3 65 8b 05 46 06 c1
RSP: 0018:ffffc90004417bd0 EFLAGS: 00000282
RAX: 1ffffffff126dec0 RBX: 00000000fffffe01 RCX: 1ffffffff1801c02
RDX: dffffc0000000000 RSI: ffffffff87cb2740 RDI: ffffffff88129500
RBP: 0000000000000200 R08: 0000000000000001 R09: ffffffff8bfaacaf
R10: fffffbfff17f5595 R11: 0000000000000000 R12: ffffffff85e8e0a3
R13: ffffc90004417c70 R14: 000000000000aae5 R15: ffff88810f260500
FS:  0000000000000000(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000055c000 CR3: 0000000102671004 CR4: 00000000001706f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 get_next_corpse net/netfilter/nf_conntrack_core.c:2222 [inline]
 nf_ct_iterate_cleanup+0x90/0x270 net/netfilter/nf_conntrack_core.c:2245
 nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2330 [inline]
 nf_ct_iterate_cleanup_net+0xfe/0x150 net/netfilter/nf_conntrack_core.c:2315
 iterate_cleanup_work+0x3f/0xf0 net/netfilter/nf_nat_masquerade.c:216
 process_one_work+0x84c/0x13b0 kernel/workqueue.c:2275
 worker_thread+0x598/0xf80 kernel/workqueue.c:2421
 kthread+0x36f/0x450 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294