./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4061519923

<...>
Warning: Permanently added '10.128.1.71' (ECDSA) to the list of known hosts.
execve("./syz-executor4061519923", ["./syz-executor4061519923"], 0x7ffe61675820 /* 10 vars */) = 0
brk(NULL)                               = 0x5555560f3000
brk(0x5555560f3c40)                     = 0x5555560f3c40
arch_prctl(ARCH_SET_FS, 0x5555560f3300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor4061519923", 4096) = 28
brk(0x555556114c40)                     = 0x555556114c40
brk(0x555556115000)                     = 0x555556115000
mprotect(0x7f993e283000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4955 attached
, child_tidptr=0x5555560f35d0) = 4955
[pid  4955] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  4955] setpgid(0, 0)               = 0
[pid  4955] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  4955] write(3, "1000", 4)         = 4
[pid  4955] close(3)                    = 0
[pid  4955] socket(AF_VSOCK, SOCK_STREAM, 0) = 3
[  180.617406][   T39] =====================================================
[  180.624779][   T39] BUG: KMSAN: uninit-value in virtio_transport_recv_pkt+0x1c42/0x2580
[  180.633300][   T39]  virtio_transport_recv_pkt+0x1c42/0x2580
[  180.639357][   T39]  vsock_loopback_work+0x3e2/0x5d0
[  180.644781][   T39]  process_one_work+0xb0d/0x1410
[  180.649881][   T39]  worker_thread+0x107e/0x1d60
[  180.654884][   T39]  kthread+0x3e8/0x540
[  180.659152][   T39]  ret_from_fork+0x1f/0x30
[  180.663979][   T39] 
[  180.666387][   T39] Uninit was stored to memory at:
[  180.671657][   T39]  virtio_transport_recv_pkt+0x1ea4/0x2580
[  180.677853][   T39]  vsock_loopback_work+0x3e2/0x5d0
[  180.683349][   T39]  process_one_work+0xb0d/0x1410
[  180.688460][   T39]  worker_thread+0x107e/0x1d60
[  180.693482][   T39]  kthread+0x3e8/0x540
[  180.697748][   T39]  ret_from_fork+0x1f/0x30
[  180.702450][   T39] 
[  180.704875][   T39] Uninit was created at:
[  180.709281][   T39]  slab_post_alloc_hook+0x12d/0xb60
[  180.714772][   T39]  kmem_cache_alloc_node+0x535/0xa30
[  180.720244][   T39]  kmalloc_reserve+0x148/0x470
[  180.725405][   T39]  __alloc_skb+0x318/0x740
[  180.730012][   T39]  virtio_transport_alloc_skb+0x8b/0x1170
[  180.736040][   T39]  virtio_transport_recv_pkt+0x1531/0x2580
[  180.742101][   T39]  vsock_loopback_work+0x3e2/0x5d0
[  180.747402][   T39]  process_one_work+0xb0d/0x1410
[  180.752647][   T39]  worker_thread+0x107e/0x1d60
[  180.757590][   T39]  kthread+0x3e8/0x540
[  180.761976][   T39]  ret_from_fork+0x1f/0x30
[  180.766594][   T39] 
[  180.768969][   T39] CPU: 1 PID: 39 Comm: kworker/1:1 Not tainted 6.4.0-rc6-syzkaller-g7cccf3be6dcb #0
[  180.778635][   T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
[  180.789001][   T39] Workqueue: vsock-loopback vsock_loopback_work
[  180.795603][   T39] =====================================================
[  180.802684][   T39] Disabling lock debugging due to kernel taint
[  180.808900][   T39] Kernel panic - not syncing: kmsan.panic set ...
[  180.815384][   T39] CPU: 1 PID: 39 Comm: kworker/1:1 Tainted: G    B              6.4.0-rc6-syzkaller-g7cccf3be6dcb #0
[  180.826379][   T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
[  180.836587][   T39] Workqueue: vsock-loopback vsock_loopback_work
[  180.843072][   T39] Call Trace:
[  180.846442][   T39]  <TASK>
[  180.849463][   T39]  dump_stack_lvl+0x1bf/0x240
[  180.854373][   T39]  dump_stack+0x1e/0x20
[  180.858736][   T39]  panic+0x4d5/0xc70
[  180.862806][   T39]  ? add_taint+0x108/0x1a0
[  180.867390][   T39]  kmsan_report+0x2d0/0x2d0
[  180.872058][   T39]  ? perf_trace_kmsan_exceed_max_origin_depth+0x14/0xb0
[  180.879193][   T39]  ? __msan_warning+0x96/0x110
[  180.884153][   T39]  ? virtio_transport_recv_pkt+0x1c42/0x2580
[  180.890270][   T39]  ? vsock_loopback_work+0x3e2/0x5d0
[  180.895707][   T39]  ? process_one_work+0xb0d/0x1410
[  180.900994][   T39]  ? worker_thread+0x107e/0x1d60
[  180.906059][   T39]  ? kthread+0x3e8/0x540
[  180.910511][   T39]  ? ret_from_fork+0x1f/0x30
[  180.915289][   T39]  ? ret_from_fork+0x1f/0x30
[  180.920011][   T39]  ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[  180.925969][   T39]  ? virtio_transport_recv_pkt+0x7f/0x2580
[  180.931944][   T39]  ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[  180.937980][   T39]  ? virtio_transport_recv_pkt+0x7f/0x2580
[  180.943965][   T39]  ? kmsan_internal_set_shadow_origin+0x66/0xe0
[  180.950463][   T39]  ? kmsan_internal_set_shadow_origin+0x66/0xe0
[  180.956913][   T39]  ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[  180.963780][   T39]  __msan_warning+0x96/0x110
[  180.968557][   T39]  virtio_transport_recv_pkt+0x1c42/0x2580
[  180.974640][   T39]  vsock_loopback_work+0x3e2/0x5d0
[  180.980023][   T39]  ? vsock_loopback_send_pkt+0x1c0/0x1c0
[  180.985889][   T39]  process_one_work+0xb0d/0x1410
[  180.991033][   T39]  worker_thread+0x107e/0x1d60
[  180.995932][   T39]  ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[  181.001933][   T39]  ? __kthread_parkme+0xe0/0x1e0
[  181.007073][   T39]  kthread+0x3e8/0x540
[  181.011376][   T39]  ? pr_cont_work+0xce0/0xce0
[  181.016250][   T39]  ? kthread_blkcg+0x120/0x120
[  181.021305][   T39]  ret_from_fork+0x1f/0x30
[  181.025870][   T39]  </TASK>
[  181.029063][   T39] Kernel Offset: disabled
[  181.033473][   T39] Rebooting in 86400 seconds..