syzbot

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2639 jiffies s: 477 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4633 Comm: syz-executor996 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline]
RIP: 0010:lock_acquire+0x16d/0x490 kernel/locking/lockdep.c:5658
Code: 19 02 00 00 41 83 3e 00 0f 85 02 01 00 00 48 c7 84 24 a0 00 00 00 00 00 00 00 9c 8f 84 24 a0 00 00 00 4c 8b b4 24 a0 00 00 00 <fa> 48 c7 c7 00 11 8c 8a e8 86 85 b3 08 65 ff 05 4f 97 9f 7e 45 31
RSP: 0018:ffffc90003f06340 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 7b69b815a906a400
RDX: 0000000000000000 RSI: ffffffff8adef680 RDI: ffffffff8adef640
RBP: ffffc90003f06450 R08: dffffc0000000000 R09: fffffbfff1c3ea96
R10: fffffbfff1c3ea96 R11: 1ffffffff1c3ea95 R12: 0000000000000000
R13: 1ffff920007e0c74 R14: 0000000000000246 R15: dffffc0000000000
FS:  00007f3fb13c16c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fb13c1d58 CR3: 000000002f635000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x32/0x50 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 tipc_skb_peek_port net/tipc/msg.h:1225 [inline]
 tipc_sk_rcv+0x24b/0x2c40 net/tipc/socket.c:2491
 tipc_node_xmit+0x1e0/0xea0 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x29a/0x3a0 net/tipc/node.c:1783
 tipc_sk_rcv+0x26f6/0x2c40 net/tipc/socket.c:2501
 tipc_node_xmit+0x1e0/0xea0 net/tipc/node.c:1703
 tipc_sk_push_backlog+0x4ef/0x8f0 net/tipc/socket.c:1316
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline]
 tipc_sk_proto_rcv+0x8ff/0x1760 net/tipc/socket.c:2158
 tipc_sk_filter_rcv+0x2f04/0x31b0 net/tipc/socket.c:2352
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x8af/0x2c40 net/tipc/socket.c:2497
 tipc_node_xmit+0x1e0/0xea0 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x29a/0x3a0 net/tipc/node.c:1783
 tipc_sk_backlog_rcv+0x19e/0x230 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1119 [inline]
 __release_sock+0x1b9/0x420 net/core/sock.c:2939
 release_sock+0x5b/0x1b0 net/core/sock.c:3503
 sockopt_release_sock net/core/sock.c:1065 [inline]
 sk_setsockopt+0x152b/0x2720 net/core/sock.c:1543
 __sys_setsockopt+0x2f6/0x3d0 net/socket.c:2284
 __do_sys_setsockopt net/socket.c:2299 [inline]
 __se_sys_setsockopt net/socket.c:2296 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2296
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3fb14213e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3fb13c1218 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f3fb13c16c0 RCX: 00007f3fb14213e9
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007f3fb14ab338 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000540 R11: 0000000000000246 R12: 00002000000002c0
R13: 00007f3fb14ab330 R14: 00007f3fb14ab33c R15: 0000200000000004
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.156 msecs