syzbot

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P9362/2:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=13217, q=477546 ncpus=2)
task:syz-executor316 state:R  running task     stack:21600 pid:9362  tgid:9357  ppid:5816   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5298 [inline]
 __schedule+0x1553/0x5240 kernel/sched/core.c:6911
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7238
 irqentry_exit+0x599/0x620 kernel/entry/common.c:239
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__local_bh_enable_ip+0x1c2/0x2b0 kernel/softirq.c:307
Code: f7 89 df e8 60 01 00 00 41 f7 c4 00 02 00 00 74 05 e8 42 80 44 00 9c 58 a9 00 02 00 00 75 23 41 f7 c4 00 02 00 00 74 01 fb 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 90 0f 0b 90 e9 66 fe
RSP: 0018:ffffc9000f4960d0 EFLAGS: 00000206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000000046
RDX: 0000000000000002 RSI: ffffffff8d5655b5 RDI: ffffffff8ba67a00
RBP: 1ffff11006d4b544 R08: ffffffff8f6a71b7 R09: 1ffffffff1ed4e36
R10: dffffc0000000000 R11: fffffbfff1ed4e37 R12: 0000000000000286
R13: dffffc0000000000 R14: ffff888036a5aa24 R15: 0000000000000001
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 spin_unlock_bh include/linux/spinlock_rt.h:116 [inline]
 tipc_skb_peek_port net/tipc/msg.h:1235 [inline]
 tipc_sk_rcv+0x45e/0x2bb0 net/tipc/socket.c:2491
 tipc_node_xmit+0x227/0xf10 net/tipc/node.c:1701
 tipc_node_xmit_skb net/tipc/node.c:1766 [inline]
 tipc_node_distr_xmit+0x2e5/0x420 net/tipc/node.c:1781
 tipc_sk_rcv+0x27c6/0x2bb0 net/tipc/socket.c:2501
 tipc_node_xmit+0x227/0xf10 net/tipc/node.c:1701
 tipc_sk_push_backlog net/tipc/socket.c:1312 [inline]
 tipc_sk_filter_connect net/tipc/socket.c:2255 [inline]
 tipc_sk_filter_rcv+0x1d6a/0x33f0 net/tipc/socket.c:2364
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x8de/0x2bb0 net/tipc/socket.c:2497
 tipc_node_xmit+0x227/0xf10 net/tipc/node.c:1701
 tipc_node_xmit_skb net/tipc/node.c:1766 [inline]
 tipc_node_distr_xmit+0x2e5/0x420 net/tipc/node.c:1781
 tipc_sk_backlog_rcv+0x1d6/0x290 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1185 [inline]
 __release_sock+0x2a9/0x3d0 net/core/sock.c:3213
 release_sock+0x75/0x210 net/core/sock.c:3795
 sockopt_release_sock net/core/sock.c:1161 [inline]
 sk_setsockopt+0x2619/0x2bb0 net/core/sock.c:1674
 do_sock_setsockopt+0x11b/0x1b0 net/socket.c:2318
 __sys_setsockopt net/socket.c:2347 [inline]
 __do_sys_setsockopt net/socket.c:2353 [inline]
 __se_sys_setsockopt net/socket.c:2350 [inline]
 __x64_sys_setsockopt+0x143/0x1b0 net/socket.c:2350
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f50ad6ad839
RSP: 002b:00007f50ad676118 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f50ad75b928 RCX: 00007f50ad6ad839
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007f50ad75b920 R08: 0000000000000004 R09: 36203a6b63617473
R10: 0000200000000040 R11: 0000000000000246 R12: 00007f50ad75b92c
R13: 0000000000000016 R14: 00007ffeaa92b310 R15: 00007ffeaa92b3f8
 </TASK>