watchdog: BUG: soft lockup - CPU#1 stuck for 114s! [syz.2.2740:11106]
Modules linked in:
CPU: 1 PID: 11106 Comm: syz.2.2740 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:preempt_count_add+0x4/0x1b0 kernel/sched/core.c:4451
Code: ff e8 80 83 59 00 e9 25 ff ff ff 48 c7 c7 e0 1f 2f 86 4c 89 fe e8 fc fc 10 01 e9 1e ff ff ff 0f 1f 80 00 00 00 00 55 48 89 e5 <41> 57 41 56 53 49 bf 00 00 00 00 00 fc ff df 48 c7 c0 c0 c8 c7 86
RSP: 0018:ffffc90001916930 EFLAGS: 00000a06
RAX: f3f3f304f1f1f1f1 RBX: ffff88813b090a88 RCX: ffff888116274f00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000201
RBP: ffffc90001916930 R08: dffffc0000000000 R09: ffffed1027612151
R10: ffffed1027612151 R11: 1ffff11027612150 R12: dffffc0000000000
R13: 1ffff92000322d28 R14: ffffffff845d4f2a R15: 000000009793fa87
FS:  00007f9858fdb6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffde000000 CR3: 00000001270e6000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __local_bh_disable_ip include/linux/bottom_half.h:12 [inline]
 __raw_spin_trylock_bh include/linux/spinlock_api_smp.h:181 [inline]
 _raw_spin_trylock_bh+0x6e/0x130 kernel/locking/spinlock.c:143
 spin_trylock_bh include/linux/spinlock.h:414 [inline]
 tipc_sk_rcv+0x41a/0x1ef0 net/tipc/socket.c:2492
 tipc_node_xmit+0x256/0xcd0 net/tipc/node.c:1674
 tipc_node_xmit_skb net/tipc/node.c:1739 [inline]
 tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1754
 tipc_sk_rcv+0x19b9/0x1ef0 net/tipc/socket.c:2497
 tipc_node_xmit+0x256/0xcd0 net/tipc/node.c:1674
 tipc_sk_push_backlog net/tipc/socket.c:1306 [inline]
 tipc_sk_filter_connect net/tipc/socket.c:2253 [inline]
 tipc_sk_filter_rcv+0x1581/0x3850 net/tipc/socket.c:2362
 tipc_sk_enqueue net/tipc/socket.c:2442 [inline]
 tipc_sk_rcv+0x7cc/0x1ef0 net/tipc/socket.c:2493
 tipc_node_xmit+0x256/0xcd0 net/tipc/node.c:1674
 tipc_node_xmit_skb net/tipc/node.c:1739 [inline]
 tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1754
 tipc_sk_backlog_rcv+0x16f/0x1f0 net/tipc/socket.c:2410
 sk_backlog_rcv include/net/sock.h:1058 [inline]
 __release_sock+0x146/0x360 net/core/sock.c:2588
 release_sock net/core/sock.c:3139 [inline]
 sock_setsockopt+0x125e/0x2350 net/core/sock.c:1257
 __sys_setsockopt+0x265/0x460 net/socket.c:2142
 __do_sys_setsockopt net/socket.c:2157 [inline]
 __se_sys_setsockopt net/socket.c:2154 [inline]
 __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2154
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f985a5b56c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9858fdb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f985a80c180 RCX: 00007f985a5b56c9
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000005
RBP: 00007f985a637f91 R08: 0000000000000004 R09: 0000000000000000
R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f985a80c218 R14: 00007f985a80c180 R15: 00007ffc9318bf88
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline]
NMI backtrace for cpu 0 skipped: idling at default_idle+0x12/0x20 arch/x86/kernel/process.c:717