watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.2:9409]
Modules linked in:
irq event stamp: 26303
hardirqs last  enabled at (26302): [<ffffffff8a20140a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (26303): [<ffffffff8a0767ae>] sysvec_apic_timer_interrupt+0xe/0xc0
softirqs last  enabled at (778): [<ffffffff89e49220>] vsock_connect+0x630/0xd30
softirqs last disabled at (780): [<ffffffff89e5437b>] virtio_transport_purge_skbs+0xcb/0x4d0
CPU: 0 PID: 9409 Comm: syz-executor.2 Not tainted 6.3.0-rc3-syzkaller-00161-g622035847f5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70
Code: 66 e7 8f 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be a8 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <f3> 0f 1e fa 65 8b 05 dd 1e 80 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc90003c77b28 EFLAGS: 00000287
RAX: ffff888017cea200 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 1ffff9200155df89 RSI: ffffffff89e54412 RDI: ffffc9000aaefc48
RBP: ffffc90003c77c60 R08: 0000000000000001 R09: 0000000000000003
R10: fffff5200078ef58 R11: 0000000000000000 R12: ffffc9000aaefc30
R13: ffffffff92158108 R14: ffffc90003c77b90 R15: ffffc9000aaefc30
FS:  00007f88f1a636c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f88f1a42d58 CR3: 0000000076e58000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 virtio_transport_purge_skbs+0x139/0x4d0
 vsock_loopback_cancel_pkt+0x1c/0x20
 vsock_connect+0x77a/0xd30
 __sys_connect_file+0x14f/0x190
 __sys_connect+0x133/0x160
 __x64_sys_connect+0x72/0xb0
 do_syscall_64+0x38/0xb0
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f88f0c7c999
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:00007f88f1a630c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f88f0d9bf80 RCX: 00007f88f0c7c999
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f88f0cd8b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f88f0d9bf80 R15: 00007ffcaaf5fd78
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2303 Comm: kworker/1:2 Not tainted 6.3.0-rc3-syzkaller-00161-g622035847f5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: vsock-loopback vsock_loopback_work
RIP: 0010:kvm_wait+0xb7/0x110
Code: 40 38 c6 74 1b 48 83 c4 10 c3 c3 e8 93 8e 51 00 66 90 0f 00 2d 7a f4 10 09 fb f4 48 83 c4 10 c3 66 90 0f 00 2d 6a f4 10 09 f4 <48> 83 c4 10 c3 89 74 24 0c 48 89 3c 24 e8 d7 8e 51 00 8b 74 24 0c
RSP: 0018:ffffc9000aaef7b8 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffffffff92158120 RCX: ffffffff8a0ae6de
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffffffff92158120
RBP: ffff8880b993d100 R08: 0000000000000001 R09: ffffffff92158120
R10: fffffbfff242b024 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: fffffbfff242b024
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2e57fed58 CR3: 0000000076e58000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __pv_queued_spin_lock_slowpath+0x959/0xc70
 do_raw_spin_lock+0x20e/0x2b0
 _raw_spin_lock_irqsave+0x42/0x50
 skb_queue_tail+0x25/0x150
 vsock_loopback_send_pkt+0x4d/0x80
 virtio_transport_reset_no_sock.isra.0+0x348/0x450
 virtio_transport_recv_pkt+0xd72/0x2a10
 vsock_loopback_work+0x296/0x3e0
 process_one_work+0x9f0/0x15d0
 worker_thread+0x67d/0x10e0
 kthread+0x2e4/0x3a0
 ret_from_fork+0x1f/0x30
 </TASK>
