./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3127256507 <...> Warning: Permanently added '10.128.10.12' (ED25519) to the list of known hosts. execve("./syz-executor3127256507", ["./syz-executor3127256507"], 0x7fff6615b0f0 /* 10 vars */) = 0 brk(NULL) = 0x55556ab3c000 brk(0x55556ab3cd00) = 0x55556ab3cd00 arch_prctl(ARCH_SET_FS, 0x55556ab3c380) = 0 set_tid_address(0x55556ab3c650) = 5873 set_robust_list(0x55556ab3c660, 24) = 0 rseq(0x55556ab3cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3127256507", 4096) = 28 getrandom("\x38\x79\x88\x4a\x3d\x5c\x06\x05", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556ab3cd00 brk(0x55556ab5dd00) = 0x55556ab5dd00 brk(0x55556ab5e000) = 0x55556ab5e000 mprotect(0x7fd4f6a42000, 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 5874 attached [pid 5874] set_robust_list(0x55556ab3c660, 24 [pid 5873] <... clone resumed>, child_tidptr=0x55556ab3c650) = 5874 [pid 5874] <... set_robust_list resumed>) = 0 [pid 5874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5874] setpgid(0, 0) = 0 [pid 5874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5874] write(3, "1000", 4) = 4 [pid 5874] close(3) = 0 executing program [pid 5874] write(1, "executing program\n", 18) = 18 [pid 5874] socket(AF_VSOCK, SOCK_SEQPACKET, 0) = 3 [pid 5874] bind(3, {sa_family=AF_VSOCK, svm_cid=VMADDR_CID_ANY, svm_port=0, svm_flags=0}, 16) = 0 [pid 5874] listen(3, 0) = 0 [pid 5874] socket(AF_VSOCK, SOCK_SEQPACKET, 0) = 4 [pid 5874] connect(4, {sa_family=AF_VSOCK, svm_cid=VMADDR_CID_ANY, svm_port=0, svm_flags=0}, 16) = 0 [pid 5874] mmap(0x200000000000, 16506880, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 [pid 5874] openat(AT_FDCWD, 0x200000000000, O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE|O_NOATIME, 000) = 5 [pid 5874] ioctl(5, TUNSETIFF, 0x2000000000c0) = 0 [pid 5874] write(5, 0x200000000440, 65007) = -1 EIO (Input/output error) [pid 5874] setsockopt(4, SOL_SOCKET, SO_ZEROCOPY, 0x200000000180, 8) = 0 [ 88.347304][ T5874] ------------[ cut here ]------------ [ 88.352989][ T5874] 'send_pkt()' returns 0, but 65536 expected [ 88.359872][ T5874] WARNING: net/vmw_vsock/virtio_transport_common.c:428 at virtio_transport_send_pkt_info+0xd11/0xf00, CPU#0: syz-executor312/5874 [ 88.373571][ T5874] Modules linked in: [ 88.377530][ T5874] CPU: 0 UID: 0 PID: 5874 Comm: syz-executor312 Not tainted 6.16.0-next-20250808-syzkaller #0 PREEMPT(full) [ 88.389319][ T5874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 88.399429][ T5874] RIP: 0010:virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.406374][ T5874] 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 [ 88.426045][ T5874] RSP: 0018:ffffc90003e47530 EFLAGS: 00010246 [ 88.432243][ T5874] RAX: ea52dd8fd46a3500 RBX: 0000000000010000 RCX: ffff88807dfb8000 [ 88.440277][ T5874] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 [ 88.448270][ T5874] RBP: ffffffff8fc8be10 R08: ffff8880b8624253 R09: 1ffff110170c484a [ 88.456363][ T5874] R10: dffffc0000000000 R11: ffffed10170c484b R12: dffffc0000000000 [ 88.464380][ T5874] R13: 0000000000010000 R14: 0000000000000000 R15: ffff888074936da4 [ 88.472586][ T5874] FS: 000055556ab3c380(0000) GS:ffff8881257db000(0000) knlGS:0000000000000000 [ 88.481566][ T5874] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.488146][ T5874] CR2: 000020000003f000 CR3: 0000000074992000 CR4: 00000000003526f0 [ 88.496166][ T5874] Call Trace: [ 88.499481][ T5874] [ 88.502412][ T5874] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.507632][ T5874] virtio_transport_seqpacket_enqueue+0x143/0x1c0 [ 88.514136][ T5874] ? __pfx_virtio_transport_seqpacket_enqueue+0x10/0x10 [ 88.521114][ T5874] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 88.527449][ T5874] ? do_raw_spin_unlock+0x122/0x240 [ 88.532737][ T5874] ? remove_wait_queue+0x33/0x120 [ 88.537792][ T5874] vsock_connectible_sendmsg+0xac7/0x1050 [ 88.543581][ T5874] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 88.549781][ T5874] ? __pfx_aa_sk_perm+0x10/0x10 [ 88.554632][ T5874] ? __pfx_woken_wake_function+0x10/0x10 [ 88.560425][ T5874] ? aa_sock_msg_perm+0xf1/0x1d0 [ 88.565420][ T5874] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 88.570808][ T5874] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 88.577006][ T5874] __sock_sendmsg+0x21c/0x270 [ 88.581808][ T5874] ____sys_sendmsg+0x52d/0x830 [ 88.586609][ T5874] ? __pfx_____sys_sendmsg+0x10/0x10 [ 88.591975][ T5874] ? import_iovec+0x74/0xa0 [ 88.596517][ T5874] ___sys_sendmsg+0x21f/0x2a0 [ 88.601250][ T5874] ? __pfx____sys_sendmsg+0x10/0x10 [ 88.606523][ T5874] ? trace_sched_exit_tp+0x36/0x110 [ 88.611775][ T5874] ? __schedule+0x17ae/0x4cc0 [ 88.616491][ T5874] ? __lock_acquire+0xab9/0xd20 [ 88.621412][ T5874] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 88.626813][ T5874] __sys_sendmmsg+0x227/0x430 [ 88.631557][ T5874] ? __pfx___sys_sendmmsg+0x10/0x10 [ 88.636777][ T5874] ? _raw_spin_unlock_irq+0x23/0x50 [ 88.642072][ T5874] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.647324][ T5874] ? rcu_is_watching+0x15/0xb0 [ 88.652161][ T5874] __x64_sys_sendmmsg+0xa0/0xc0 [ 88.657042][ T5874] do_syscall_64+0xfa/0x3b0 [ 88.661611][ T5874] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.666951][ T5874] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.673426][ T5874] ? clear_bhb_loop+0x60/0xb0 [ 88.678139][ T5874] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.684121][ T5874] RIP: 0033:0x7fd4f69cedf9 [ 88.688550][ T5874] 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 [ 88.708366][ T5874] RSP: 002b:00007ffece7a89c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 88.716881][ T5874] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007fd4f69cedf9 [ 88.725054][ T5874] RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004 [ 88.733093][ T5874] RBP: 00007fd4f6a425f0 R08: 0000000000000000 R09: 0000000000000006 [ 88.741134][ T5874] R10: 0000000024008094 R11: 0000000000000246 R12: 0000000000000000 [ 88.749247][ T5874] R13: 00007fd4f6a425f0 R14: 0000000000000001 R15: 0000000000000001 [ 88.757277][ T5874] [ 88.760369][ T5874] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 88.767717][ T5874] CPU: 0 UID: 0 PID: 5874 Comm: syz-executor312 Not tainted 6.16.0-next-20250808-syzkaller #0 PREEMPT(full) [ 88.779579][ T5874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 88.789635][ T5874] Call Trace: [ 88.792934][ T5874] [ 88.795859][ T5874] dump_stack_lvl+0x99/0x250 [ 88.800537][ T5874] ? __asan_memcpy+0x40/0x70 [ 88.805233][ T5874] ? __pfx_dump_stack_lvl+0x10/0x10 [ 88.810543][ T5874] ? __pfx__printk+0x10/0x10 [ 88.815184][ T5874] vpanic+0x281/0x750 [ 88.819195][ T5874] ? __pfx__printk+0x10/0x10 [ 88.823847][ T5874] ? __pfx_vpanic+0x10/0x10 [ 88.828362][ T5874] ? is_bpf_text_address+0x292/0x2b0 [ 88.833648][ T5874] ? is_bpf_text_address+0x26/0x2b0 [ 88.838865][ T5874] panic+0xb9/0xc0 [ 88.842599][ T5874] ? __pfx_panic+0x10/0x10 [ 88.847068][ T5874] __warn+0x334/0x4c0 [ 88.851177][ T5874] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.857445][ T5874] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.863691][ T5874] report_bug+0x2be/0x4f0 [ 88.868036][ T5874] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.874452][ T5874] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.880712][ T5874] ? virtio_transport_send_pkt_info+0xd13/0xf00 [ 88.886960][ T5874] handle_bug+0x84/0x160 [ 88.891211][ T5874] exc_invalid_op+0x1a/0x50 [ 88.895737][ T5874] asm_exc_invalid_op+0x1a/0x20 [ 88.900620][ T5874] RIP: 0010:virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.907494][ T5874] 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 [ 88.927109][ T5874] RSP: 0018:ffffc90003e47530 EFLAGS: 00010246 [ 88.933223][ T5874] RAX: ea52dd8fd46a3500 RBX: 0000000000010000 RCX: ffff88807dfb8000 [ 88.941199][ T5874] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 [ 88.949172][ T5874] RBP: ffffffff8fc8be10 R08: ffff8880b8624253 R09: 1ffff110170c484a [ 88.957162][ T5874] R10: dffffc0000000000 R11: ffffed10170c484b R12: dffffc0000000000 [ 88.965222][ T5874] R13: 0000000000010000 R14: 0000000000000000 R15: ffff888074936da4 [ 88.973305][ T5874] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.978638][ T5874] virtio_transport_seqpacket_enqueue+0x143/0x1c0 [ 88.985088][ T5874] ? __pfx_virtio_transport_seqpacket_enqueue+0x10/0x10 [ 88.992219][ T5874] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 88.998569][ T5874] ? do_raw_spin_unlock+0x122/0x240 [ 89.003789][ T5874] ? remove_wait_queue+0x33/0x120 [ 89.008915][ T5874] vsock_connectible_sendmsg+0xac7/0x1050 [ 89.014662][ T5874] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 89.020936][ T5874] ? __pfx_aa_sk_perm+0x10/0x10 [ 89.025817][ T5874] ? __pfx_woken_wake_function+0x10/0x10 [ 89.031477][ T5874] ? aa_sock_msg_perm+0xf1/0x1d0 [ 89.036429][ T5874] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 89.041733][ T5874] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 89.047906][ T5874] __sock_sendmsg+0x21c/0x270 [ 89.052613][ T5874] ____sys_sendmsg+0x52d/0x830 [ 89.057421][ T5874] ? __pfx_____sys_sendmsg+0x10/0x10 [ 89.062749][ T5874] ? import_iovec+0x74/0xa0 [ 89.067271][ T5874] ___sys_sendmsg+0x21f/0x2a0 [ 89.071966][ T5874] ? __pfx____sys_sendmsg+0x10/0x10 [ 89.077195][ T5874] ? trace_sched_exit_tp+0x36/0x110 [ 89.082395][ T5874] ? __schedule+0x17ae/0x4cc0 [ 89.087092][ T5874] ? __lock_acquire+0xab9/0xd20 [ 89.091960][ T5874] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 89.097350][ T5874] __sys_sendmmsg+0x227/0x430 [ 89.102042][ T5874] ? __pfx___sys_sendmmsg+0x10/0x10 [ 89.107252][ T5874] ? _raw_spin_unlock_irq+0x23/0x50 [ 89.112466][ T5874] ? lockdep_hardirqs_on+0x9c/0x150 [ 89.117690][ T5874] ? rcu_is_watching+0x15/0xb0 [ 89.122470][ T5874] __x64_sys_sendmmsg+0xa0/0xc0 [ 89.127330][ T5874] do_syscall_64+0xfa/0x3b0 [ 89.131855][ T5874] ? lockdep_hardirqs_on+0x9c/0x150 [ 89.137061][ T5874] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.143125][ T5874] ? clear_bhb_loop+0x60/0xb0 [ 89.147807][ T5874] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.153707][ T5874] RIP: 0033:0x7fd4f69cedf9 [ 89.158128][ T5874] 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 [ 89.177755][ T5874] RSP: 002b:00007ffece7a89c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 89.186208][ T5874] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007fd4f69cedf9 [ 89.194215][ T5874] RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004 [ 89.202200][ T5874] RBP: 00007fd4f6a425f0 R08: 0000000000000000 R09: 0000000000000006 [ 89.210276][ T5874] R10: 0000000024008094 R11: 0000000000000246 R12: 0000000000000000 [ 89.218272][ T5874] R13: 00007fd4f6a425f0 R14: 0000000000000001 R15: 0000000000000001 [ 89.226267][ T5874] [ 89.229559][ T5874] Kernel Offset: disabled [ 89.233879][ T5874] Rebooting in 86400 seconds..