RBP: 00007f9b30433eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b30626128 R14: 00007f9b30626090 R15: 00007ffd80437b58
watchdog: BUG: soft lockup - CPU#1 stuck for 263s! [syz.1.7471:23850]
Modules linked in:
CPU: 1 PID: 23850 Comm: syz.1.7471 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:_raw_spin_unlock_bh+0x1/0x60 kernel/locking/spinlock.c:209
Code: 03 5b 5d c3 e8 74 7c ff fb eb f6 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 b8 fa da 91 aa 55 <48> 89 e5 53 48 c7 c0 80 db 0d 87 48 c1 e8 03 48 b9 00 00 00 00 00
RSP: 0018:ffffc900016c69f0 EFLAGS: 00000246
RAX: ffffffff84d9b185 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc90004285000 RSI: 000000000007ffff RDI: ffffc900016c6e34
RBP: ffffc900016c6c70 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520002d8d30 R12: ffffc900016c6e20
R13: ffff888114600580 R14: 000000002006809d R15: 000000002006809d
FS: 00007f9b311cd6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000007038 CR3: 00000001134a1000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tipc_node_xmit+0x36f/0xd80 net/tipc/node.c:1703
tipc_node_xmit_skb+0xf7/0x150 net/tipc/node.c:1768
tipc_sk_rcv+0x1d57/0x2c20 net/tipc/socket.c:2524
tipc_node_xmit+0x36f/0xd80 net/tipc/node.c:1703
tipc_sk_push_backlog net/tipc/socket.c:1316 [inline]
tipc_sk_filter_connect net/tipc/socket.c:2257 [inline]
tipc_sk_filter_rcv+0x19d7/0x3010 net/tipc/socket.c:2366
tipc_sk_enqueue net/tipc/socket.c:2447 [inline]
tipc_sk_rcv+0x7e7/0x2c20 net/tipc/socket.c:2499
tipc_node_xmit+0x36f/0xd80 net/tipc/node.c:1703
tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
tipc_node_distr_xmit+0x277/0x390 net/tipc/node.c:1783
tipc_sk_backlog_rcv+0x174/0x220 net/tipc/socket.c:2414
sk_backlog_rcv include/net/sock.h:1150 [inline]
__release_sock+0x154/0x380 net/core/sock.c:2951
release_sock+0x60/0x1c0 net/core/sock.c:3527
tipc_release+0xd1a/0x1640 net/tipc/socket.c:652
__sock_release net/socket.c:652 [inline]
sock_close+0xc9/0x220 net/socket.c:1389
__fput+0x1fd/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9b3039de99
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:00007f9b311cd028 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f9b30626090 RCX: 00007f9b3039de99
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000
RBP: 00007f9b30433eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b30626128 R14: 00007f9b30626090 R15: 00007ffd80437b58
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 23849 Comm: syz.1.7471 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:kvm_wait+0x105/0x150 arch/x86/kernel/kvm.c:1064
Code: 1b 33 04 f4 eb 87 fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07 40 38 f0 75 10 66 90 0f 00 2d cd 1b 33 04 fb f4 5e ff ff ff fb e9 58 ff ff ff e8 eb 20 c5 03 89 f9 80 e1 07 38
RSP: 0018:ffffc90000f37540 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff888114600598 RCX: ffffffff85012029
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888114600598
RBP: ffffc90000f375d0 R08: ffff888114600598 R09: 1ffff110228c00b3
R10: dffffc0000000000 R11: ffffed10228c00b4 R12: 1ffff110228c00b3
R13: ffff8881f6e38cd4 R14: dffffc0000000000 R15: 1ffff920001e6ea8
FS: 00007f9b311ee6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200001000000 CR3: 00000001134a1000 CR4: 00000000003506b0
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:603 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x687/0xc40 kernel/locking/qspinlock.c:511
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock include/linux/spinlock.h:187 [inline]
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline]
_raw_spin_lock_bh+0xe4/0xf0 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
lock_sock_nested+0x90/0x290 net/core/sock.c:3515
lock_sock include/net/sock.h:1818 [inline]
tipc_sendstream+0x47/0x70 net/tipc/socket.c:1549
sock_sendmsg_nosec net/socket.c:716 [inline]
__sock_sendmsg net/socket.c:728 [inline]
____sys_sendmsg+0x5fb/0x9c0 net/socket.c:2508
___sys_sendmsg+0x2a2/0x360 net/socket.c:2562
__sys_sendmmsg+0x2cc/0x4e0 net/socket.c:2648
__do_sys_sendmmsg net/socket.c:2677 [inline]
__se_sys_sendmmsg net/socket.c:2674 [inline]
__x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2674
x64_sys_call+0x3f5/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:308
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9b3039de99
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:00007f9b311ee028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f9b30625fa0 RCX: 00007f9b3039de99
RDX: 04000000000001cd RSI: 0000200000005280 RDI: 0000000000000004
RBP: 00007f9b30433eaf R08: 0000000000000000 R09: 0000000000000000
R10: 000000001008c811 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b30626038 R14: 00007f9b30625fa0 R15: 00007ffd80437b58