watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.4.2329:10428]
Modules linked in:
CPU: 0 PID: 10428 Comm: syz.4.2329 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:rcu_read_unlock_special+0x344/0x430 kernel/rcu/tree_plugin.h:647
Code: 00 00 00 41 8b 34 24 4c 89 f7 e8 97 ab 1e 00 eb 0a bf 09 00 00 00 e8 1b 87 e9 ff 48 8b 44 24 08 48 89 44 24 18 ff 74 24 18 9d <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90000c56680 EFLAGS: 00000202
RAX: 0000000000000202 RBX: 1ffff9200018acd4 RCX: 0000000000000009
RDX: 0000000000000000 RSI: ffffffff84e7af40 RDI: ffffffff85406aa0
RBP: ffffc90000c56728 R08: ffff888118b7e383 R09: 1ffff1102316fc70
R10: dffffc0000000000 R11: ffffed102316fc71 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8881f70572c0 R15: ffffffff86598cc8
FS:  00007f5d7abe96c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000001 CR3: 0000000112054000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 __rcu_read_unlock+0x5e/0xa0 kernel/rcu/tree_plugin.h:399
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 tipc_sk_lookup+0x54e/0x600 net/tipc/socket.c:3006
 tipc_sk_rcv+0x350/0x1df0 net/tipc/socket.c:2494
 tipc_node_xmit+0x36c/0xd80 net/tipc/node.c:1679
 tipc_node_xmit_skb net/tipc/node.c:1744 [inline]
 tipc_node_distr_xmit+0x277/0x390 net/tipc/node.c:1759
 tipc_sk_rcv+0x1913/0x1df0 net/tipc/socket.c:2503
 tipc_node_xmit+0x36c/0xd80 net/tipc/node.c:1679
 tipc_sk_push_backlog+0x4d3/0x7b0 net/tipc/socket.c:1307
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1362 [inline]
 tipc_sk_proto_rcv+0xa32/0x1b60 net/tipc/socket.c:2160
 tipc_sk_filter_rcv+0x30bc/0x3860 net/tipc/socket.c:2356
 tipc_sk_enqueue net/tipc/socket.c:2448 [inline]
 tipc_sk_rcv+0x745/0x1df0 net/tipc/socket.c:2499
 tipc_node_xmit+0x36c/0xd80 net/tipc/node.c:1679
 tipc_node_xmit_skb net/tipc/node.c:1744 [inline]
 tipc_node_distr_xmit+0x277/0x390 net/tipc/node.c:1759
 tipc_sk_backlog_rcv+0x174/0x220 net/tipc/socket.c:2416
 sk_backlog_rcv include/net/sock.h:1071 [inline]
 __release_sock+0x146/0x360 net/core/sock.c:2588
 release_sock net/core/sock.c:3141 [inline]
 sock_setsockopt+0x1801/0x2620 net/core/sock.c:1256
 __sys_setsockopt+0x272/0x480 net/socket.c:2143
 __do_sys_setsockopt net/socket.c:2158 [inline]
 __se_sys_setsockopt net/socket.c:2155 [inline]
 __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2155
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f5d7c1b1199
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5d7abe9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f5d7c439090 RCX: 00007f5d7c1b1199
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000069
RBP: 00007f5d7c2488e0 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000540 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5d7c439128 R14: 00007f5d7c439090 R15: 00007fff693215e8
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0x12/0x20 arch/x86/kernel/process.c:717