watchdog: BUG: soft lockup - CPU#1 stuck for 122s! [syz-executor.0:454]
Modules linked in:
CPU: 1 PID: 454 Comm: syz-executor.0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
RIP: 0010:kvm_wait+0xc2/0x120 arch/x86/kernel/kvm.c:926
Code: 38 f0 75 26 41 f7 c4 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d af 98 98 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d a0 98 98 03 fb f4 <4c> 89 64 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 4b c7 04
RSP: 0018:ffffc900012379a0 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff88811052a888 RCX: ffffffff814b25ba
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff88811052a888
RBP: ffffc90001237a50 R08: dffffc0000000000 R09: ffffed10220a5512
R10: ffffed10220a5512 R11: 1ffff110220a5511 R12: 0000000000000246
R13: 1ffff110220a5511 R14: dffffc0000000000 R15: 1ffff92000246f38
FS:  0000555563210480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa08b18dd58 CR3: 000000010ebbd000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x714/0xb70 kernel/locking/qspinlock.c:508
 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:183 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0xd8/0xe0 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 lock_sock_nested+0x92/0x290 net/core/sock.c:3122
 lock_sock include/net/sock.h:1684 [inline]
 tipc_release+0x56/0x1490 net/tipc/socket.c:626
 __sock_release net/socket.c:597 [inline]
 sock_close+0xe0/0x270 net/socket.c:1286
 __fput+0x2fb/0x770 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fa08b62bd5a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24
RSP: 002b:00007ffefa0b71b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007fa08b62bd5a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fa08b75c980 R08: 0000001b30160000 R09: 00369a33f7c498a2
R10: 000000172992e76e R11: 0000000000000293 R12: 000000000000a7ab
R13: ffffffffffffffff R14: 00007fa08b1af000 R15: 000000000000a46a
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 456 Comm: syz-executor.0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:29 [inline]
RIP: 0010:atomic_read include/asm-generic/atomic-instrumented.h:28 [inline]
RIP: 0010:queued_spin_trylock include/asm-generic/qspinlock.h:63 [inline]
RIP: 0010:do_raw_spin_trylock include/linux/spinlock.h:201 [inline]
RIP: 0010:__raw_spin_trylock_bh include/linux/spinlock_api_smp.h:182 [inline]
RIP: 0010:_raw_spin_trylock_bh+0x7e/0x130 kernel/locking/spinlock.c:143
Code: f1 f1 f1 04 f3 f3 f3 4b 89 44 25 00 4c 8b 75 08 bf 01 02 00 00 e8 12 03 cc fc 48 89 df be 04 00 00 00 e8 65 88 25 fd 48 89 d8 <48> c1 e8 03 42 0f b6 04 20 84 c0 75 7e 8b 03 89 44 24 20 85 c0 75
RSP: 0018:ffffc9000126e7a0 EFLAGS: 00000256
RAX: ffff88811052a888 RBX: ffff88811052a888 RCX: ffffffff84780edb
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88811052a888
RBP: ffffc9000126e830 R08: dffffc0000000000 R09: ffffed10220a5512
R10: ffffed10220a5512 R11: 1ffff110220a5511 R12: dffffc0000000000
R13: 1ffff9200024dcf4 R14: ffffffff845d4f2a R15: 0000000035d00dee
FS:  00007fa08b18d6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffefa0b72f8 CR3: 000000010ebbd000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 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+0x4dd/0x790 net/tipc/socket.c:1306
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1358 [inline]
 tipc_sk_proto_rcv+0x98d/0x1ac0 net/tipc/socket.c:2156
 tipc_sk_filter_rcv+0x30ac/0x3850 net/tipc/socket.c:2350
 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: 0033:0x7fa08b62ce69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa08b18d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fa08b75b050 RCX: 00007fa08b62ce69
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007fa08b67947a R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa08b75b050 R15: 00007ffefa0b70e8