syzbot

RBP: 00007f724e3e5d6f R08: 0000000000000004 R09: 0000000000000000
R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f724e5c9128 R14: 00007f724e5c9090 R15: 00007ffd89069ed8
watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz.2.332:1345]
Modules linked in:
CPU: 1 PID: 1345 Comm: syz.2.332 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:_raw_spin_lock_bh+0x31/0xf0 kernel/locking/spinlock.c:174
Code: 56 41 54 53 48 83 e4 e0 48 83 ec 60 48 89 fb 65 48 8b 04 25 28 00 00 00 48 89 44 24 48 4c 8d 74 24 20 48 c7 04 24 b3 8a b5 41 <48> c7 44 24 08 78 40 ba 85 48 c7 44 24 10 80 f0 82 84 49 89 e7 49
RSP: 0018:ffffc90001f5e780 EFLAGS: 00000282
RAX: 62a4aea86e31d100 RBX: ffffc90001f5ec94 RCX: ffff88810d67e2c0
RDX: 0000000000000000 RSI: 0000000000000005 RDI: ffffc90001f5ec94
RBP: ffffc90001f5e810 R08: ffff8881130cc083 R09: 1ffff11022619810
R10: dffffc0000000000 R11: ffffed1022619811 R12: ffffc90001f5ec80
R13: ffff8881130cc080 R14: ffffc90001f5e7a0 R15: 00000000d4a5d846
FS:  00007f724e1916c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f724e190ff8 CR3: 0000000112afd000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 spin_lock_bh include/linux/spinlock.h:360 [inline]
 tipc_skb_peek_port net/tipc/msg.h:1248 [inline]
 tipc_sk_rcv+0x230/0x1dc0 net/tipc/socket.c:2489
 tipc_node_xmit+0x26c/0xd80 net/tipc/node.c:1674
 tipc_node_xmit_skb net/tipc/node.c:1739 [inline]
 tipc_node_distr_xmit+0x2a3/0x3b0 net/tipc/node.c:1754
 tipc_sk_rcv+0x18ed/0x1dc0 net/tipc/socket.c:2499
 tipc_node_xmit+0x26c/0xd80 net/tipc/node.c:1674
 tipc_sk_push_backlog+0x4dd/0x790 net/tipc/socket.c:1306
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1358 [inline]
 tipc_sk_proto_rcv+0xa65/0x1af0 net/tipc/socket.c:2156
 tipc_sk_filter_rcv+0x320e/0x39d0 net/tipc/socket.c:2352
 tipc_sk_enqueue net/tipc/socket.c:2444 [inline]
 tipc_sk_rcv+0x742/0x1dc0 net/tipc/socket.c:2495
 tipc_node_xmit+0x26c/0xd80 net/tipc/node.c:1674
 tipc_node_xmit_skb net/tipc/node.c:1739 [inline]
 tipc_node_distr_xmit+0x2a3/0x3b0 net/tipc/node.c:1754
 tipc_sk_backlog_rcv+0x17d/0x210 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1071 [inline]
 __release_sock+0x146/0x360 net/core/sock.c:2589
 release_sock net/core/sock.c:3142 [inline]
 sock_setsockopt+0x1840/0x2680 net/core/sock.c:1257
 __sys_setsockopt+0x272/0x480 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: 0033:0x7f724e34fe59
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:00007f724e191028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f724e5c9090 RCX: 00007f724e34fe59
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007f724e3e5d6f R08: 0000000000000004 R09: 0000000000000000
R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f724e5c9128 R14: 00007f724e5c9090 R15: 00007ffd89069ed8
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1344 Comm: syz.2.332 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x584/0xb70 kernel/locking/qspinlock.c:508
Code: 00 00 41 c6 06 00 48 8b 44 24 10 42 0f b6 04 38 84 c0 0f 85 c4 01 00 00 48 8b 44 24 08 c6 00 01 41 be 00 80 ff ff eb 07 f3 90 <41> ff c6 74 4b 43 0f b6 44 3d 00 84 c0 75 2e 80 3b 00 75 ea 48 89
RSP: 0018:ffffc900020377a0 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffff8881130cc088 RCX: ffffffff814bfcfa
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff8881130cc088
RBP: ffffc90002037890 R08: ffff8881130cc088 R09: 1ffff11022619811
R10: dffffc0000000000 R11: ffffed1022619812 R12: ffff88823ff92b00
R13: 1ffff11022619811 R14: 00000000ffffe05f R15: dffffc0000000000
FS:  00007f724e1b26c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 0000000112afd000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:184 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0xe4/0xf0 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:360 [inline]
 lock_sock_nested+0x90/0x2a0 net/core/sock.c:3125
 lock_sock include/net/sock.h:1697 [inline]
 tipc_sendstream+0x47/0x70 net/tipc/socket.c:1540
 sock_sendmsg_nosec net/socket.c:652 [inline]
 __sock_sendmsg net/socket.c:664 [inline]
 ____sys_sendmsg+0x5b7/0x8f0 net/socket.c:2376
 ___sys_sendmsg+0x236/0x2e0 net/socket.c:2430
 __sys_sendmsg net/socket.c:2459 [inline]
 __do_sys_sendmsg net/socket.c:2468 [inline]
 __se_sys_sendmsg net/socket.c:2466 [inline]
 __x64_sys_sendmsg+0x1f9/0x2c0 net/socket.c:2466
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f724e34fe59
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:00007f724e1b2028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f724e5c8fa0 RCX: 00007f724e34fe59
RDX: 0000000000048090 RSI: 0000200000000080 RDI: 0000000000000004
RBP: 00007f724e3e5d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f724e5c9038 R14: 00007f724e5c8fa0 R15: 00007ffd89069ed8