./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3144154086 <...> Warning: Permanently added '10.128.1.158' (ED25519) to the list of known hosts. execve("./syz-executor3144154086", ["./syz-executor3144154086"], 0x7ffc3c9640e0 /* 10 vars */) = 0 brk(NULL) = 0x555581a61000 brk(0x555581a61d00) = 0x555581a61d00 arch_prctl(ARCH_SET_FS, 0x555581a61380) = 0 set_tid_address(0x555581a61650) = 5868 set_robust_list(0x555581a61660, 24) = 0 rseq(0x555581a61ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3144154086", 4096) = 28 getrandom("\x52\x4b\x2a\x27\x42\x97\xa2\xb4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555581a61d00 brk(0x555581a82d00) = 0x555581a82d00 brk(0x555581a83000) = 0x555581a83000 mprotect(0x7f820577d000, 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 5869 attached [pid 5869] set_robust_list(0x555581a61660, 24 [pid 5868] <... clone resumed>, child_tidptr=0x555581a61650) = 5869 [pid 5869] <... set_robust_list resumed>) = 0 [pid 5869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5869] setpgid(0, 0) = 0 [pid 5869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1000", 4) = 4 [pid 5869] close(3) = 0 executing program [pid 5869] write(1, "executing program\n", 18) = 18 [pid 5869] socket(AF_VSOCK, SOCK_SEQPACKET, 0) = 3 [pid 5869] bind(3, {sa_family=AF_VSOCK, svm_cid=VMADDR_CID_ANY, svm_port=0, svm_flags=0}, 16) = 0 [pid 5869] listen(3, 0) = 0 [pid 5869] socket(AF_VSOCK, SOCK_SEQPACKET, 0) = 4 [pid 5869] connect(4, {sa_family=AF_VSOCK, svm_cid=VMADDR_CID_ANY, svm_port=0, svm_flags=0}, 16) = 0 [pid 5869] mmap(0x200000000000, 16506880, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 [pid 5869] openat(AT_FDCWD, 0x200000000000, O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE|O_NOATIME, 000) = 5 [pid 5869] ioctl(5, TUNSETIFF, 0x2000000000c0) = 0 [pid 5869] write(5, 0x200000000440, 65007) = -1 EIO (Input/output error) [pid 5869] setsockopt(4, SOL_SOCKET, SO_ZEROCOPY, 0x200000000180, 8) = 0 [ 88.132757][ T5869] ------------[ cut here ]------------ [ 88.138354][ T5869] 'send_pkt()' returns 0, but 65536 expected [ 88.145190][ T5869] WARNING: net/vmw_vsock/virtio_transport_common.c:428 at virtio_transport_send_pkt_info+0xd11/0xf00, CPU#0: syz-executor314/5869 [ 88.158711][ T5869] Modules linked in: [ 88.164030][ T5869] CPU: 0 UID: 0 PID: 5869 Comm: syz-executor314 Not tainted 6.16.0-next-20250808-syzkaller #0 PREEMPT(full) [ 88.176003][ T5869] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 88.186170][ T5869] RIP: 0010:virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.193109][ T5869] 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 [ 88.213352][ T5869] RSP: 0018:ffffc900041c7530 EFLAGS: 00010246 [ 88.219461][ T5869] RAX: 7cf27ab11f566400 RBX: 0000000000010000 RCX: ffff888032675a00 [ 88.227619][ T5869] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 [ 88.235662][ T5869] RBP: ffffffff8fc8be10 R08: 0000000000000003 R09: 0000000000000004 [ 88.243689][ T5869] R10: dffffc0000000000 R11: fffffbfff1c7a1ec R12: dffffc0000000000 [ 88.251752][ T5869] R13: 0000000000010000 R14: 0000000000000000 R15: ffff88802a1816e4 [ 88.259753][ T5869] FS: 0000555581a61380(0000) GS:ffff8881257db000(0000) knlGS:0000000000000000 [ 88.268804][ T5869] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.275521][ T5869] CR2: 000020000003f000 CR3: 0000000071818000 CR4: 00000000003526f0 [ 88.283552][ T5869] Call Trace: [ 88.286853][ T5869] [ 88.289784][ T5869] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.295075][ T5869] virtio_transport_seqpacket_enqueue+0x143/0x1c0 [ 88.301559][ T5869] ? __pfx_virtio_transport_seqpacket_enqueue+0x10/0x10 [ 88.308514][ T5869] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 88.314898][ T5869] ? do_raw_spin_unlock+0x122/0x240 [ 88.320140][ T5869] ? remove_wait_queue+0x33/0x120 [ 88.325210][ T5869] vsock_connectible_sendmsg+0xac7/0x1050 [ 88.330977][ T5869] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 88.337218][ T5869] ? __pfx_aa_sk_perm+0x10/0x10 [ 88.342214][ T5869] ? __pfx_woken_wake_function+0x10/0x10 [ 88.347873][ T5869] ? aa_sock_msg_perm+0xf1/0x1d0 [ 88.352893][ T5869] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 88.358295][ T5869] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 88.364510][ T5869] __sock_sendmsg+0x21c/0x270 [ 88.369420][ T5869] ____sys_sendmsg+0x52d/0x830 [ 88.374282][ T5869] ? __pfx_____sys_sendmsg+0x10/0x10 [ 88.379741][ T5869] ? import_iovec+0x74/0xa0 [ 88.384403][ T5869] ___sys_sendmsg+0x21f/0x2a0 [ 88.389205][ T5869] ? __pfx____sys_sendmsg+0x10/0x10 [ 88.394686][ T5869] ? trace_sched_exit_tp+0x36/0x110 [ 88.399921][ T5869] ? __schedule+0x17ae/0x4cc0 [ 88.404700][ T5869] ? __lock_acquire+0xab9/0xd20 [ 88.409668][ T5869] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 88.415118][ T5869] __sys_sendmmsg+0x227/0x430 [ 88.419823][ T5869] ? __pfx___sys_sendmmsg+0x10/0x10 [ 88.425160][ T5869] ? _raw_spin_unlock_irq+0x23/0x50 [ 88.430587][ T5869] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.435966][ T5869] ? rcu_is_watching+0x15/0xb0 [ 88.440844][ T5869] __x64_sys_sendmmsg+0xa0/0xc0 [ 88.445752][ T5869] do_syscall_64+0xfa/0x3b0 [ 88.450275][ T5869] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.455560][ T5869] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.461770][ T5869] ? clear_bhb_loop+0x60/0xb0 [ 88.466459][ T5869] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.472424][ T5869] RIP: 0033:0x7f8205709df9 [ 88.476955][ T5869] 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 [ 88.496627][ T5869] RSP: 002b:00007ffdb5270568 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 88.505126][ T5869] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f8205709df9 [ 88.513233][ T5869] RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004 [ 88.521259][ T5869] RBP: 00007f820577d5f0 R08: 0000000000000000 R09: 0000000000000006 [ 88.529521][ T5869] R10: 0000000024008094 R11: 0000000000000246 R12: 0000000000000000 [ 88.537577][ T5869] R13: 00007f820577d5f0 R14: 0000000000000001 R15: 0000000000000001 [ 88.545658][ T5869] [ 88.548689][ T5869] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 88.555962][ T5869] CPU: 0 UID: 0 PID: 5869 Comm: syz-executor314 Not tainted 6.16.0-next-20250808-syzkaller #0 PREEMPT(full) [ 88.567575][ T5869] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 88.577743][ T5869] Call Trace: [ 88.581033][ T5869] [ 88.583965][ T5869] dump_stack_lvl+0x99/0x250 [ 88.588581][ T5869] ? __asan_memcpy+0x40/0x70 [ 88.593276][ T5869] ? __pfx_dump_stack_lvl+0x10/0x10 [ 88.598479][ T5869] ? __pfx__printk+0x10/0x10 [ 88.603080][ T5869] vpanic+0x281/0x750 [ 88.607061][ T5869] ? __pfx__printk+0x10/0x10 [ 88.611656][ T5869] ? __pfx_vpanic+0x10/0x10 [ 88.616156][ T5869] ? is_bpf_text_address+0x292/0x2b0 [ 88.621436][ T5869] ? is_bpf_text_address+0x26/0x2b0 [ 88.626724][ T5869] panic+0xb9/0xc0 [ 88.630466][ T5869] ? __pfx_panic+0x10/0x10 [ 88.634918][ T5869] __warn+0x334/0x4c0 [ 88.638907][ T5869] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.645247][ T5869] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.651507][ T5869] report_bug+0x2be/0x4f0 [ 88.655869][ T5869] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.662118][ T5869] ? virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.668400][ T5869] ? virtio_transport_send_pkt_info+0xd13/0xf00 [ 88.674642][ T5869] handle_bug+0x84/0x160 [ 88.678882][ T5869] exc_invalid_op+0x1a/0x50 [ 88.683600][ T5869] asm_exc_invalid_op+0x1a/0x20 [ 88.688462][ T5869] RIP: 0010:virtio_transport_send_pkt_info+0xd11/0xf00 [ 88.695327][ T5869] 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 [ 88.714961][ T5869] RSP: 0018:ffffc900041c7530 EFLAGS: 00010246 [ 88.721051][ T5869] RAX: 7cf27ab11f566400 RBX: 0000000000010000 RCX: ffff888032675a00 [ 88.729030][ T5869] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 [ 88.737003][ T5869] RBP: ffffffff8fc8be10 R08: 0000000000000003 R09: 0000000000000004 [ 88.744979][ T5869] R10: dffffc0000000000 R11: fffffbfff1c7a1ec R12: dffffc0000000000 [ 88.752955][ T5869] R13: 0000000000010000 R14: 0000000000000000 R15: ffff88802a1816e4 [ 88.760951][ T5869] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.766182][ T5869] virtio_transport_seqpacket_enqueue+0x143/0x1c0 [ 88.772606][ T5869] ? __pfx_virtio_transport_seqpacket_enqueue+0x10/0x10 [ 88.779551][ T5869] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 88.785973][ T5869] ? do_raw_spin_unlock+0x122/0x240 [ 88.791275][ T5869] ? remove_wait_queue+0x33/0x120 [ 88.796412][ T5869] vsock_connectible_sendmsg+0xac7/0x1050 [ 88.802174][ T5869] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 88.808340][ T5869] ? __pfx_aa_sk_perm+0x10/0x10 [ 88.813408][ T5869] ? __pfx_woken_wake_function+0x10/0x10 [ 88.819057][ T5869] ? aa_sock_msg_perm+0xf1/0x1d0 [ 88.824005][ T5869] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 88.829478][ T5869] ? __pfx_vsock_connectible_sendmsg+0x10/0x10 [ 88.835647][ T5869] __sock_sendmsg+0x21c/0x270 [ 88.840340][ T5869] ____sys_sendmsg+0x52d/0x830 [ 88.845115][ T5869] ? __pfx_____sys_sendmsg+0x10/0x10 [ 88.850416][ T5869] ? import_iovec+0x74/0xa0 [ 88.854938][ T5869] ___sys_sendmsg+0x21f/0x2a0 [ 88.859623][ T5869] ? __pfx____sys_sendmsg+0x10/0x10 [ 88.864837][ T5869] ? trace_sched_exit_tp+0x36/0x110 [ 88.870063][ T5869] ? __schedule+0x17ae/0x4cc0 [ 88.874764][ T5869] ? __lock_acquire+0xab9/0xd20 [ 88.879718][ T5869] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 88.885193][ T5869] __sys_sendmmsg+0x227/0x430 [ 88.889879][ T5869] ? __pfx___sys_sendmmsg+0x10/0x10 [ 88.895181][ T5869] ? _raw_spin_unlock_irq+0x23/0x50 [ 88.900415][ T5869] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.905644][ T5869] ? rcu_is_watching+0x15/0xb0 [ 88.910427][ T5869] __x64_sys_sendmmsg+0xa0/0xc0 [ 88.915372][ T5869] do_syscall_64+0xfa/0x3b0 [ 88.919877][ T5869] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.925083][ T5869] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.931153][ T5869] ? clear_bhb_loop+0x60/0xb0 [ 88.935846][ T5869] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.941744][ T5869] RIP: 0033:0x7f8205709df9 [ 88.946162][ T5869] 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 [ 88.965856][ T5869] RSP: 002b:00007ffdb5270568 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 88.974277][ T5869] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f8205709df9 [ 88.982253][ T5869] RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004 [ 88.990311][ T5869] RBP: 00007f820577d5f0 R08: 0000000000000000 R09: 0000000000000006 [ 88.998284][ T5869] R10: 0000000024008094 R11: 0000000000000246 R12: 0000000000000000 [ 89.006264][ T5869] R13: 00007f820577d5f0 R14: 0000000000000001 R15: 0000000000000001 [ 89.014252][ T5869] [ 89.017637][ T5869] Kernel Offset: disabled [ 89.021967][ T5869] Rebooting in 86400 seconds..