watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz.3.2660:8453]
Modules linked in:
CPU: 1 PID: 8453 Comm: syz.3.2660 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x591/0xc40 kernel/locking/qspinlock.c:511
Code: 0f 85 33 01 00 00 41 c6 45 00 00 41 0f b6 04 17 84 c0 0f 85 46 01 00 00 48 8b 44 24 10 c6 00 01 41 bd 00 80 ff ff eb 07 f3 90 <41> ff c5 74 5b 41 0f b6 04 16 84 c0 75 35 80 3b 00 75 eb 48 89 df
RSP: 0018:ffffc90004497940 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffff88812da23798 RCX: ffffffff84f37c82
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff88812da23798
RBP: ffffc90004497a30 R08: dffffc0000000000 R09: ffffed1025b446f4
R10: ffffed1025b446f4 R11: 1ffff11025b446f3 R12: 1ffff1103ee20001
R13: 00000000ffffc757 R14: 1ffff11025b446f3 R15: 1ffff11025b446f3
FS:  000055555bceb500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e5d8c6e018 CR3: 0000000120bf2000 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: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+0xd8/0xe0 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 lock_sock_nested+0x92/0x280 net/core/sock.c:3507
 lock_sock include/net/sock.h:1769 [inline]
 tipc_release+0xb2/0x1650 net/tipc/socket.c:639
 __sock_release net/socket.c:652 [inline]
 sock_close+0xf1/0x290 net/socket.c:1390
 __fput+0x1fc/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1db/0x240 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+0x5a/0xa0 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:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff14258eb69
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:00007ffd9a2e79a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ff1427b7ba0 RCX: 00007ff14258eb69
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007ff1427b7ba0 R08: 0000000000000000 R09: 000000039a2e7c9f
R10: 00007ff1427b7ac0 R11: 0000000000000246 R12: 00000000000107db
R13: 00007ff1427b6080 R14: ffffffffffffffff R15: 00007ffd9a2e7ac0
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8455 Comm: syz.3.2660 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:_raw_spin_unlock_bh+0x1/0x60 kernel/locking/spinlock.c:209
Code: 03 5b 5d c3 e8 74 1d 0d fc 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 00 d5 ed 86 48 c1 e8 03 48 b9 00 00 00 00 00
RSP: 0018:ffffc900044068d0 EFLAGS: 00000293
RAX: ffffffff84cc571c RBX: ffff88811750a100 RCX: ffff888111201440
RDX: 0000000000000000 RSI: 0000000051235e8c RDI: ffffc90004406d74
RBP: ffffc90004406b70 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000880d0c R11: 1ffff92000880d0c R12: ffff88811b535780
R13: dffffc0000000000 R14: ffffc90004406d60 R15: 0000000051235e8c
FS:  00007ff1433376c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb45e9a7f98 CR3: 0000000120bf2000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1783
 tipc_sk_rcv+0x1aa3/0x2cc0 net/tipc/socket.c:2501
 tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703
 tipc_sk_push_backlog net/tipc/socket.c:1316 [inline]
 tipc_sk_filter_connect net/tipc/socket.c:2255 [inline]
 tipc_sk_filter_rcv+0x155f/0x2c80 net/tipc/socket.c:2364
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x7d9/0x2cc0 net/tipc/socket.c:2497
 tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x292/0x390 net/tipc/node.c:1783
 tipc_sk_backlog_rcv+0x16f/0x1f0 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1131 [inline]
 __release_sock+0x154/0x380 net/core/sock.c:2945
 release_sock net/core/sock.c:3519 [inline]
 sockopt_release_sock+0x95/0x1f0 net/core/sock.c:1067
 sk_setsockopt+0x1355/0x2590 net/core/sock.c:-1
 sock_setsockopt+0x5a/0x70 net/core/sock.c:1552
 __sys_setsockopt+0x270/0x4e0 net/socket.c:2274
 __do_sys_setsockopt net/socket.c:2289 [inline]
 __se_sys_setsockopt net/socket.c:2286 [inline]
 __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2286
 x64_sys_call+0x124/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:55
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff14258eb69
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:00007ff143337038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ff1427b5fa0 RCX: 00007ff14258eb69
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007ff142611df1 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000540 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff1427b5fa0 R15: 00007ffd9a2e7848
 </TASK>