./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor7119612 <...> Warning: Permanently added '10.128.0.197' (ED25519) to the list of known hosts. execve("./syz-executor7119612", ["./syz-executor7119612"], 0x7ffc095f5550 /* 10 vars */) = 0 brk(NULL) = 0x555559915000 brk(0x555559915d00) = 0x555559915d00 arch_prctl(ARCH_SET_FS, 0x555559915380) = 0 set_tid_address(0x555559915650) = 5871 set_robust_list(0x555559915660, 24) = 0 rseq(0x555559915ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor7119612", 4096) = 25 getrandom("\xb0\xc0\x45\x6b\x13\x09\x3c\x28", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555559915d00 brk(0x555559936d00) = 0x555559936d00 brk(0x555559937000) = 0x555559937000 mprotect(0x7fbad1997000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5872 attached [pid 5872] set_robust_list(0x555559915660, 24 [pid 5871] <... clone resumed>, child_tidptr=0x555559915650) = 5872 [pid 5872] <... set_robust_list resumed>) = 0 [pid 5872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5872] setpgid(0, 0) = 0 [pid 5872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5872] write(3, "1000", 4) = 4 [pid 5872] close(3) = 0 [pid 5872] write(1, "executing program\n", 18executing program ) = 18 [pid 5872] socket(AF_VSOCK, SOCK_SEQPACKET, 0) = 3 [pid 5872] bind(3, {sa_family=AF_VSOCK, svm_cid=VMADDR_CID_ANY, svm_port=0, svm_flags=0}, 16) = 0 [pid 5872] listen(3, 0) = 0 [pid 5872] socket(AF_VSOCK, SOCK_SEQPACKET, 0) = 4 [pid 5872] connect(4, {sa_family=AF_VSOCK, svm_cid=VMADDR_CID_ANY, svm_port=0, svm_flags=0}, 16) = 0 [pid 5872] mmap(0x200000000000, 16506880, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 [pid 5872] openat(AT_FDCWD, 0x200000000000, O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE|O_NOATIME, 000) = 5 [pid 5872] ioctl(5, TUNSETIFF, 0x2000000000c0) = 0 [pid 5872] write(5, 0x200000000440, 65007) = -1 EIO (Input/output error) [pid 5872] setsockopt(4, SOL_SOCKET, SO_ZEROCOPY, 0x200000000180, 8) = 0 [ 90.658759][ T5872] ------------[ cut here ]------------ [ 90.664437][ T5872] 'send_pkt()' returns 0, but 65536 expected [ 90.671394][ T5872] WARNING: net/vmw_vsock/virtio_transport_common.c:428 at virtio_transport_send_pkt_info+0xd11/0xf00, CPU#1: syz-executor711/5872 [ 90.685105][ T5872] Modules linked in: [ 90.689100][ T5872] CPU: 1 UID: 0 PID: 5872 Comm: syz-executor711 Not tainted 6.16.0-next-20250808-syzkaller #0 PREEMPT(full) [ 90.701152][ T5872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 90.711651][ T5872] RIP: 0010:virtio_transport_send_pkt_info+0xd11/0xf00 [ 90.718547][ T5872] Code: 0f 0b 90 bd f2 ff ff ff eb bc e8 0a bb 5d f6 c6 05 c7 7a 6c 04 01 90 48 c7 c7 c0 67 da 8c 44 89 f6 4c 89 ea e8 60 51 21 f6 90 <0f> 0b 90 90 e9 e1 fe ff ff e8 e1 ba 5d f6 90 0f 0b 90 e9 c5 f7 ff [ 90.738432][ T5872] RSP: 0018:ffffc900041b7530 EFLAGS: 00010246 [ 90.744658][ T5872] RAX: 7b76faec331e7d00 RBX: 0000000000010000 RCX: ffff88807d1d0000 [ 90.752770][ T5872] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 [ 90.760859][ T5872] RBP: ffffffff8fc8be10 R08: ffff8880b8624253 R09: 1ffff110170c484a [ 90.768885][ T5872] R10: dffffc0000000000 R11: ffffed10170c484b R12: dffffc0000000000 [ 90.777031][ T5872] R13: 0000000000010000 R14: 0000000000000000 R15: ffff888074f349e4 [ 90.785072][ T5872] FS: 0000555559915380(0000) GS:ffff8881258db000(0000) knlGS:0000000000000000 [ 90.794166][ T5872] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.800772][ T5872] CR2: 00005559e1b877f8 CR3: 0000000074694000 CR4: 00000000003526f0 [ 90.808818][ T5872] Call Trace: [ 90.812264][ T5872] [ 90.815212][ T5872] ? lockdep_hardirqs_on+0x9c/0x150 [ 90.820596][ T5872] virtio_transport_seqpacket_enqueue+0x143/0x1c0 [ 90.827061][ T5872] ? __pfx_virtio_transport_seqpacket_enqueue+0x10/0x10 [ 90.834082][ T5872] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 90.840433][ T5872] ? do_raw_spin_unlock+0x122/0x240 [ 90.845708][ T5872] ? remove_wait_queue+0x33/0x120 [ 90.850758][ T5872] vsock_connectible_sendmsg+0xac7/0x1050 [ 90.856558][ T5872] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 90.862790][ T5872] ? __pfx_aa_sk_perm+0x10/0x10 [ 90.867638][ T5872] ? __pfx_woken_wake_function+0x10/0x10 [ 90.873356][ T5872] ? aa_sock_msg_perm+0xf1/0x1d0 [ 90.878327][ T5872] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 90.883685][ T5872] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 90.890051][ T5872] __sock_sendmsg+0x21c/0x270 [ 90.894919][ T5872] ____sys_sendmsg+0x52d/0x830 [ 90.899715][ T5872] ? __pfx_____sys_sendmsg+0x10/0x10 [ 90.905071][ T5872] ? import_iovec+0x74/0xa0 [ 90.909600][ T5872] ___sys_sendmsg+0x21f/0x2a0 [ 90.914419][ T5872] ? __pfx____sys_sendmsg+0x10/0x10 [ 90.919655][ T5872] ? trace_sched_exit_tp+0x36/0x110 [ 90.924889][ T5872] ? __schedule+0x17ae/0x4cc0 [ 90.929599][ T5872] ? __lock_acquire+0xab9/0xd20 [ 90.934610][ T5872] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 90.940012][ T5872] __sys_sendmmsg+0x227/0x430 [ 90.944733][ T5872] ? __pfx___sys_sendmmsg+0x10/0x10 [ 90.949959][ T5872] ? _raw_spin_unlock_irq+0x23/0x50 [ 90.955214][ T5872] ? lockdep_hardirqs_on+0x9c/0x150 [ 90.960451][ T5872] ? rcu_is_watching+0x15/0xb0 [ 90.965287][ T5872] __x64_sys_sendmmsg+0xa0/0xc0 [ 90.970171][ T5872] do_syscall_64+0xfa/0x3b0 [ 90.974755][ T5872] ? lockdep_hardirqs_on+0x9c/0x150 [ 90.979981][ T5872] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.986182][ T5872] ? clear_bhb_loop+0x60/0xb0 [ 90.990886][ T5872] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.996835][ T5872] RIP: 0033:0x7fbad1923df9 [ 91.001272][ T5872] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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 b8 ff ff ff f7 d8 64 89 01 48 [ 91.021326][ T5872] RSP: 002b:00007ffea15e5ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 91.029837][ T5872] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007fbad1923df9 [ 91.037987][ T5872] RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004 [ 91.046016][ T5872] RBP: 00007fbad19975f0 R08: 0000000000000000 R09: 0000000000000006 [ 91.054182][ T5872] R10: 0000000024008094 R11: 0000000000000246 R12: 0000000000000000 [ 91.062226][ T5872] R13: 00007fbad19975f0 R14: 0000000000000001 R15: 0000000000000001 [ 91.070382][ T5872] [ 91.073484][ T5872] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 91.080811][ T5872] CPU: 1 UID: 0 PID: 5872 Comm: syz-executor711 Not tainted 6.16.0-next-20250808-syzkaller #0 PREEMPT(full) [ 91.092369][ T5872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 91.102599][ T5872] Call Trace: [ 91.105887][ T5872] [ 91.108818][ T5872] dump_stack_lvl+0x99/0x250 [ 91.113410][ T5872] ? __asan_memcpy+0x40/0x70 [ 91.117998][ T5872] ? __pfx_dump_stack_lvl+0x10/0x10 [ 91.123198][ T5872] ? __pfx__printk+0x10/0x10 [ 91.127797][ T5872] vpanic+0x281/0x750 [ 91.131780][ T5872] ? __pfx__printk+0x10/0x10 [ 91.136378][ T5872] ? __pfx_vpanic+0x10/0x10 [ 91.140897][ T5872] ? is_bpf_text_address+0x292/0x2b0 [ 91.146287][ T5872] ? is_bpf_text_address+0x26/0x2b0 [ 91.151517][ T5872] panic+0xb9/0xc0 [ 91.155431][ T5872] ? __pfx_panic+0x10/0x10 [ 91.159851][ T5872] __warn+0x334/0x4c0 [ 91.163831][ T5872] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 91.170072][ T5872] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 91.176490][ T5872] report_bug+0x2be/0x4f0 [ 91.180822][ T5872] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 91.187152][ T5872] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 91.193401][ T5872] ? virtio_transport_send_pkt_info+0xd13/0xf00 [ 91.199649][ T5872] handle_bug+0x84/0x160 [ 91.203990][ T5872] exc_invalid_op+0x1a/0x50 [ 91.208496][ T5872] asm_exc_invalid_op+0x1a/0x20 [ 91.213351][ T5872] RIP: 0010:virtio_transport_send_pkt_info+0xd11/0xf00 [ 91.220296][ T5872] Code: 0f 0b 90 bd f2 ff ff ff eb bc e8 0a bb 5d f6 c6 05 c7 7a 6c 04 01 90 48 c7 c7 c0 67 da 8c 44 89 f6 4c 89 ea e8 60 51 21 f6 90 <0f> 0b 90 90 e9 e1 fe ff ff e8 e1 ba 5d f6 90 0f 0b 90 e9 c5 f7 ff [ 91.240081][ T5872] RSP: 0018:ffffc900041b7530 EFLAGS: 00010246 [ 91.246245][ T5872] RAX: 7b76faec331e7d00 RBX: 0000000000010000 RCX: ffff88807d1d0000 [ 91.254419][ T5872] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 [ 91.262397][ T5872] RBP: ffffffff8fc8be10 R08: ffff8880b8624253 R09: 1ffff110170c484a [ 91.270372][ T5872] R10: dffffc0000000000 R11: ffffed10170c484b R12: dffffc0000000000 [ 91.278434][ T5872] R13: 0000000000010000 R14: 0000000000000000 R15: ffff888074f349e4 [ 91.286424][ T5872] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.291654][ T5872] virtio_transport_seqpacket_enqueue+0x143/0x1c0 [ 91.298077][ T5872] ? __pfx_virtio_transport_seqpacket_enqueue+0x10/0x10 [ 91.305024][ T5872] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 91.311443][ T5872] ? do_raw_spin_unlock+0x122/0x240 [ 91.316657][ T5872] ? remove_wait_queue+0x33/0x120 [ 91.321769][ T5872] vsock_connectible_sendmsg+0xac7/0x1050 [ 91.327521][ T5872] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 91.333707][ T5872] ? __pfx_aa_sk_perm+0x10/0x10 [ 91.338587][ T5872] ? __pfx_woken_wake_function+0x10/0x10 [ 91.344262][ T5872] ? aa_sock_msg_perm+0xf1/0x1d0 [ 91.349241][ T5872] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 91.354544][ T5872] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 91.360711][ T5872] __sock_sendmsg+0x21c/0x270 [ 91.365402][ T5872] ____sys_sendmsg+0x52d/0x830 [ 91.370314][ T5872] ? __pfx_____sys_sendmsg+0x10/0x10 [ 91.375614][ T5872] ? import_iovec+0x74/0xa0 [ 91.380129][ T5872] ___sys_sendmsg+0x21f/0x2a0 [ 91.384816][ T5872] ? __pfx____sys_sendmsg+0x10/0x10 [ 91.390024][ T5872] ? trace_sched_exit_tp+0x36/0x110 [ 91.395319][ T5872] ? __schedule+0x17ae/0x4cc0 [ 91.400102][ T5872] ? __lock_acquire+0xab9/0xd20 [ 91.404973][ T5872] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 91.410460][ T5872] __sys_sendmmsg+0x227/0x430 [ 91.415259][ T5872] ? __pfx___sys_sendmmsg+0x10/0x10 [ 91.420558][ T5872] ? _raw_spin_unlock_irq+0x23/0x50 [ 91.425770][ T5872] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.430997][ T5872] ? rcu_is_watching+0x15/0xb0 [ 91.435793][ T5872] __x64_sys_sendmmsg+0xa0/0xc0 [ 91.440672][ T5872] do_syscall_64+0xfa/0x3b0 [ 91.445207][ T5872] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.450429][ T5872] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.456525][ T5872] ? clear_bhb_loop+0x60/0xb0 [ 91.461237][ T5872] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.467365][ T5872] RIP: 0033:0x7fbad1923df9 [ 91.471880][ T5872] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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 b8 ff ff ff f7 d8 64 89 01 48 [ 91.491504][ T5872] RSP: 002b:00007ffea15e5ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 91.499951][ T5872] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007fbad1923df9 [ 91.508036][ T5872] RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004 [ 91.516030][ T5872] RBP: 00007fbad19975f0 R08: 0000000000000000 R09: 0000000000000006 [ 91.524096][ T5872] R10: 0000000024008094 R11: 0000000000000246 R12: 0000000000000000 [ 91.532070][ T5872] R13: 00007fbad19975f0 R14: 0000000000000001 R15: 0000000000000001 [ 91.540241][ T5872] [ 91.543526][ T5872] Kernel Offset: disabled [ 91.547848][ T5872] Rebooting in 86400 seconds..