RBP: 00007f88683c8ee0 R08: 0000000000000004 R09: 0000000000000000
R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f886859f038 R14: 00007f886859efa0 R15: 00007ffe849d2548
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.2.1265:4224]
Modules linked in:
CPU: 0 PID: 4224 Comm: syz.2.1265 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x5f/0x80 kernel/softirq.c:404
Code: 48 c7 c7 60 27 08 85 e8 5f 43 6f 03 65 66 8b 05 17 3f c4 7e 66 85 c0 75 22 bf 01 00 00 00 e8 a8 98 08 00 65 8b 05 89 3c c3 7e <85> c0 74 02 5d c3 e8 ea 47 c1 ff 5d c3 0f 0b eb a2 e8 0b 00 00 00
RSP: 0018:ffffc9000455e798 EFLAGS: 00000213
RAX: 0000000000000201 RBX: ffff8881075ee8c4 RCX: 0000000000000200
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 00000000ffffffff
RBP: ffffc9000455e798 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520008abce8 R12: ffffc9000455ec40
R13: dffffc0000000000 R14: 00000000ede7851f R15: 00000000ede7851f
FS:  00007f88681986c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556cc50908 CR3: 000000012f752000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
 _raw_spin_unlock_bh+0x51/0x60 kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:409 [inline]
 tipc_skb_peek_port net/tipc/msg.h:1258 [inline]
 tipc_sk_rcv+0x397/0x2c20 net/tipc/socket.c:2491
 tipc_node_xmit+0x26c/0xd80 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x2a3/0x3b0 net/tipc/node.c:1783
 tipc_sk_rcv+0x19f7/0x2c20 net/tipc/socket.c:2501
 tipc_node_xmit+0x26c/0xd80 net/tipc/node.c:1703
 tipc_sk_push_backlog+0x4dd/0x790 net/tipc/socket.c:1316
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline]
 tipc_sk_proto_rcv+0xa65/0x1560 net/tipc/socket.c:2158
 tipc_sk_filter_rcv+0x2ac0/0x2cb0 net/tipc/socket.c:2352
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x794/0x2c20 net/tipc/socket.c:2497
 tipc_node_xmit+0x26c/0xd80 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x2a3/0x3b0 net/tipc/node.c:1783
 tipc_sk_backlog_rcv+0x17d/0x210 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1090 [inline]
 __release_sock+0x17c/0x3f0 net/core/sock.c:2737
 release_sock net/core/sock.c:3290 [inline]
 sock_setsockopt+0x1d7a/0x2490 net/core/sock.c:1381
 __sys_setsockopt+0x261/0x470 net/socket.c:2198
 __do_sys_setsockopt net/socket.c:2213 [inline]
 __se_sys_setsockopt net/socket.c:2210 [inline]
 __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2210
 x64_sys_call+0x982/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:55
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8868333ef9
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:00007f8868198028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f886859efa0 RCX: 00007f8868333ef9
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007f88683c8ee0 R08: 0000000000000004 R09: 0000000000000000
R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f886859f038 R14: 00007f886859efa0 R15: 00007ffe849d2548
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4223 Comm: syz.2.1265 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x527/0x9c0 kernel/locking/qspinlock.c:508
Code: 00 41 c6 45 00 00 48 8b 44 24 10 42 0f b6 04 38 84 c0 0f 85 1c 01 00 00 48 8b 44 24 08 c6 00 01 41 bd 00 80 ff ff eb 07 f3 90 <41> ff c5 74 47 43 0f b6 04 3e 84 c0 75 2b 80 3b 00 75 eb 48 89 df
RSP: 0018:ffffc9000454f9a0 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffff88811dbec088 RCX: ffffffff81500909
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff88811dbec088
RBP: ffffc9000454fa90 R08: ffff88811dbec088 R09: 1ffff11023b7d811
R10: dffffc0000000000 R11: ffffed1023b7d812 R12: 1ffff1103ee20001
R13: 00000000ffff9532 R14: 1ffff11023b7d811 R15: dffffc0000000000
FS:  00005555826bf500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff9171d96b8 CR3: 000000012f752000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [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:188 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0xe4/0xf0 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:369 [inline]
 lock_sock_nested+0x95/0x2a0 net/core/sock.c:3278
 lock_sock include/net/sock.h:1743 [inline]
 tipc_release+0xb2/0x1640 net/tipc/socket.c:639
 __sock_release net/socket.c:649 [inline]
 sock_close+0xe0/0x270 net/socket.c:1335
 __fput+0x20b/0x8b0 fs/file_table.c:311
 ____fput+0x15/0x20 fs/file_table.c:339
 task_work_run+0x127/0x190 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8868333ef9
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:00007ffe849d26a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f88685a0da0 RCX: 00007f8868333ef9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f88685a0da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f88685a0cb0 R11: 0000000000000246 R12: 000000000000e5eb
R13: 00007f886859f09c R14: 000000000000e2de R15: 00007f886859f090
 </TASK>