./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3586626883 <...> Warning: Permanently added '10.128.1.72' (ED25519) to the list of known hosts. execve("./syz-executor3586626883", ["./syz-executor3586626883"], 0x7ffc2957a5e0 /* 10 vars */) = 0 brk(NULL) = 0x555556d2a000 brk(0x555556d2ad00) = 0x555556d2ad00 arch_prctl(ARCH_SET_FS, 0x555556d2a380) = 0 set_tid_address(0x555556d2a650) = 5067 set_robust_list(0x555556d2a660, 24) = 0 rseq(0x555556d2aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3586626883", 4096) = 28 getrandom("\x8d\xa7\x9b\xf3\xe1\x82\x42\x45", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556d2ad00 brk(0x555556d4bd00) = 0x555556d4bd00 brk(0x555556d4c000) = 0x555556d4c000 mprotect(0x7f4a33f40000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556d2a650) = 5068 ./strace-static-x86_64: Process 5068 attached [pid 5068] set_robust_list(0x555556d2a660, 24) = 0 [pid 5068] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5068] setsid() = 1 [pid 5068] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5068] unshare(CLONE_NEWNS) = 0 [pid 5068] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5068] unshare(CLONE_NEWIPC) = 0 [pid 5068] unshare(CLONE_NEWCGROUP) = 0 [pid 5068] unshare(CLONE_NEWUTS) = 0 [pid 5068] unshare(CLONE_SYSVSEM) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "16777216", 8) = 8 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "536870912", 9) = 9 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "8192", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5068] close(3) = 0 [pid 5068] getpid() = 1 [pid 5068] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 90 e9 ff f9 ff ff 44 89 ef 44 89 e6 e8 aa 5f 4a f6 45 39 e5 [ 55.528950][ T5068] RSP: 0018:ffffc90003aa70c8 EFLAGS: 00010293 [ 55.535066][ T5068] RAX: ffffffff8b490e62 RBX: 0000000000000000 RCX: ffff888077c1d940 [ 55.543029][ T5068] RDX: 0000000000000000 RSI: 00000000ffffff94 RDI: 0000000000000000 [ 55.551076][ T5068] RBP: ffff8880153ced30 R08: ffffffff8b49085c R09: 1ffffffff2593084 [ 55.559096][ T5068] R10: dffffc0000000000 R11: ffffffff8b4906f0 R12: ffffffffffffff94 [ 55.567121][ T5068] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8880153cec80 [ 55.575141][ T5068] FS: 0000555556d2a380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 55.584079][ T5068] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.590702][ T5068] CR2: 0000000020010000 CR3: 000000007a3e6000 CR4: 00000000003506f0 [ 55.598719][ T5068] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.606725][ T5068] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.614881][ T5068] Call Trace: [ 55.618209][ T5068] [ 55.621148][ T5068] ? __warn+0x162/0x4b0 [ 55.625347][ T5068] ? mpls_gso_segment+0x773/0xaa0 [ 55.630388][ T5068] ? report_bug+0x2b3/0x500 [ 55.634888][ T5068] ? mpls_gso_segment+0x773/0xaa0 [ 55.639979][ T5068] ? handle_bug+0x3e/0x70 [ 55.644311][ T5068] ? exc_invalid_op+0x1a/0x50 [ 55.649029][ T5068] ? asm_exc_invalid_op+0x1a/0x20 [ 55.654080][ T5068] ? __pfx_mpls_gso_segment+0x10/0x10 [ 55.659497][ T5068] ? mpls_gso_segment+0x16c/0xaa0 [ 55.664538][ T5068] ? mpls_gso_segment+0x772/0xaa0 [ 55.669613][ T5068] ? mpls_gso_segment+0x773/0xaa0 [ 55.674653][ T5068] ? mpls_gso_segment+0x772/0xaa0 [ 55.679726][ T5068] ? __pfx_skb_network_protocol+0x10/0x10 [ 55.685539][ T5068] ? __pfx_mpls_gso_segment+0x10/0x10 [ 55.690923][ T5068] skb_mac_gso_segment+0x383/0x740 [ 55.696083][ T5068] ? skb_mac_gso_segment+0x1b8/0x740 [ 55.701402][ T5068] ? __pfx_skb_mac_gso_segment+0x10/0x10 [ 55.707104][ T5068] nsh_gso_segment+0x40a/0xad0 [ 55.711894][ T5068] ? __pfx_nsh_gso_segment+0x10/0x10 [ 55.717229][ T5068] skb_mac_gso_segment+0x383/0x740 [ 55.722365][ T5068] ? skb_mac_gso_segment+0x1b8/0x740 [ 55.727703][ T5068] ? __pfx_skb_mac_gso_segment+0x10/0x10 [ 55.733440][ T5068] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 55.739534][ T5068] __skb_gso_segment+0x324/0x4c0 [ 55.744494][ T5068] validate_xmit_skb+0x580/0x1120 [ 55.749602][ T5068] ? __pfx_validate_xmit_skb+0x10/0x10 [ 55.755120][ T5068] validate_xmit_skb_list+0x95/0x130 [ 55.760406][ T5068] sch_direct_xmit+0x11a/0x5f0 [ 55.765210][ T5068] ? __pfx_do_raw_spin_trylock+0x10/0x10 [ 55.770858][ T5068] ? __pfx_sch_direct_xmit+0x10/0x10 [ 55.776190][ T5068] ? skb_copy_bits+0x341/0x7a0 [ 55.780968][ T5068] __dev_queue_xmit+0x1912/0x3b10 [ 55.786053][ T5068] ? __dev_queue_xmit+0x2c4/0x3b10 [ 55.791181][ T5068] ? __pfx___dev_queue_xmit+0x10/0x10 [ 55.796595][ T5068] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 55.802151][ T5068] ? packet_parse_headers+0x7bd/0xad0 [ 55.807607][ T5068] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 55.813425][ T5068] ? packet_xmit+0x68/0x330 [ 55.817971][ T5068] packet_sendmsg+0x46a9/0x6130 [ 55.822844][ T5068] ? __pfx___might_resched+0x10/0x10 [ 55.828208][ T5068] ? aa_sk_perm+0x966/0xab0 [ 55.832830][ T5068] ? __pfx_packet_sendmsg+0x10/0x10 [ 55.838258][ T5068] ? validate_chain+0x3880/0x58e0 [ 55.843312][ T5068] ? aa_sock_msg_perm+0x91/0x160 [ 55.848309][ T5068] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 55.853694][ T5068] ? security_socket_sendmsg+0x87/0xb0 [ 55.859197][ T5068] ? __pfx_packet_sendmsg+0x10/0x10 [ 55.864418][ T5068] __sock_sendmsg+0x221/0x270 [ 55.869175][ T5068] __sys_sendto+0x3a4/0x4f0 [ 55.873713][ T5068] ? __pfx___sys_sendto+0x10/0x10 [ 55.878800][ T5068] ? lockdep_hardirqs_on+0x98/0x140 [ 55.884018][ T5068] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 55.890429][ T5068] __x64_sys_sendto+0xde/0x100 [ 55.895258][ T5068] do_syscall_64+0xf9/0x240 [ 55.899779][ T5068] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 55.905729][ T5068] RIP: 0033:0x7f4a33ec7169 [ 55.910156][ T5068] Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 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 [ 55.929812][ T5068] RSP: 002b:00007ffc1051d5a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 55.938269][ T5068] RAX: ffffffffffffffda RBX: 00007f4a33f15070 RCX: 00007f4a33ec7169 [ 55.946275][ T5068] RDX: 000000000000ff88 RSI: 0000000020000180 RDI: 0000000000000004 [ 55.954257][ T5068] RBP: 00007ffc1051d5c8 R08: 0000000020000140 R09: 0000000000000014 [ 55.962294][ T5068] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc1051d5c4 [ 55.970318][ T5068] R13: 0000000000000000 R14: 00007ffc1051d5d0 R15: 00007f4a33f15004 [ 55.978371][ T5068] [ 55.981391][ T5068] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 55.988651][ T5068] CPU: 0 PID: 5068 Comm: syz-executor358 Not tainted 6.8.0-rc4-syzkaller-01071-g4934446297c2 #0 [ 55.999041][ T5068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 56.009082][ T5068] Call Trace: [ 56.012349][ T5068] [ 56.015267][ T5068] dump_stack_lvl+0x1e7/0x2e0 [ 56.019942][ T5068] ? __pfx_dump_stack_lvl+0x10/0x10 [ 56.025215][ T5068] ? __pfx__printk+0x10/0x10 [ 56.029790][ T5068] ? vscnprintf+0x5d/0x90 [ 56.034106][ T5068] panic+0x349/0x860 [ 56.037988][ T5068] ? __warn+0x171/0x4b0 [ 56.042130][ T5068] ? __pfx_panic+0x10/0x10 [ 56.046540][ T5068] __warn+0x31c/0x4b0 [ 56.050506][ T5068] ? mpls_gso_segment+0x773/0xaa0 [ 56.055516][ T5068] report_bug+0x2b3/0x500 [ 56.059852][ T5068] ? mpls_gso_segment+0x773/0xaa0 [ 56.064873][ T5068] handle_bug+0x3e/0x70 [ 56.069025][ T5068] exc_invalid_op+0x1a/0x50 [ 56.073523][ T5068] asm_exc_invalid_op+0x1a/0x20 [ 56.078366][ T5068] RIP: 0010:mpls_gso_segment+0x773/0xaa0 [ 56.083989][ T5068] Code: 48 81 c4 a0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 0c 5e 4a f6 48 c7 c3 ea ff ff ff eb d9 e8 fe 5d 4a f6 90 <0f> 0b 90 e9 ff f9 ff ff 44 89 ef 44 89 e6 e8 aa 5f 4a f6 45 39 e5 [ 56.103584][ T5068] RSP: 0018:ffffc90003aa70c8 EFLAGS: 00010293 [ 56.109644][ T5068] RAX: ffffffff8b490e62 RBX: 0000000000000000 RCX: ffff888077c1d940 [ 56.117606][ T5068] RDX: 0000000000000000 RSI: 00000000ffffff94 RDI: 0000000000000000 [ 56.125571][ T5068] RBP: ffff8880153ced30 R08: ffffffff8b49085c R09: 1ffffffff2593084 [ 56.133532][ T5068] R10: dffffc0000000000 R11: ffffffff8b4906f0 R12: ffffffffffffff94 [ 56.141495][ T5068] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8880153cec80 [ 56.149467][ T5068] ? __pfx_mpls_gso_segment+0x10/0x10 [ 56.154847][ T5068] ? mpls_gso_segment+0x16c/0xaa0 [ 56.159859][ T5068] ? mpls_gso_segment+0x772/0xaa0 [ 56.164880][ T5068] ? mpls_gso_segment+0x772/0xaa0 [ 56.169908][ T5068] ? __pfx_skb_network_protocol+0x10/0x10 [ 56.175637][ T5068] ? __pfx_mpls_gso_segment+0x10/0x10 [ 56.181038][ T5068] skb_mac_gso_segment+0x383/0x740 [ 56.186150][ T5068] ? skb_mac_gso_segment+0x1b8/0x740 [ 56.191444][ T5068] ? __pfx_skb_mac_gso_segment+0x10/0x10 [ 56.197090][ T5068] nsh_gso_segment+0x40a/0xad0 [ 56.201861][ T5068] ? __pfx_nsh_gso_segment+0x10/0x10 [ 56.207147][ T5068] skb_mac_gso_segment+0x383/0x740 [ 56.212285][ T5068] ? skb_mac_gso_segment+0x1b8/0x740 [ 56.217574][ T5068] ? __pfx_skb_mac_gso_segment+0x10/0x10 [ 56.223199][ T5068] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 56.229181][ T5068] __skb_gso_segment+0x324/0x4c0 [ 56.234114][ T5068] validate_xmit_skb+0x580/0x1120 [ 56.239150][ T5068] ? __pfx_validate_xmit_skb+0x10/0x10 [ 56.244607][ T5068] validate_xmit_skb_list+0x95/0x130 [ 56.249888][ T5068] sch_direct_xmit+0x11a/0x5f0 [ 56.254648][ T5068] ? __pfx_do_raw_spin_trylock+0x10/0x10 [ 56.260274][ T5068] ? __pfx_sch_direct_xmit+0x10/0x10 [ 56.265555][ T5068] ? skb_copy_bits+0x341/0x7a0 [ 56.270315][ T5068] __dev_queue_xmit+0x1912/0x3b10 [ 56.275342][ T5068] ? __dev_queue_xmit+0x2c4/0x3b10 [ 56.280451][ T5068] ? __pfx___dev_queue_xmit+0x10/0x10 [ 56.285815][ T5068] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 56.291351][ T5068] ? packet_parse_headers+0x7bd/0xad0 [ 56.296724][ T5068] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 56.302522][ T5068] ? packet_xmit+0x68/0x330 [ 56.307018][ T5068] packet_sendmsg+0x46a9/0x6130 [ 56.311879][ T5068] ? __pfx___might_resched+0x10/0x10 [ 56.317168][ T5068] ? aa_sk_perm+0x966/0xab0 [ 56.321669][ T5068] ? __pfx_packet_sendmsg+0x10/0x10 [ 56.326864][ T5068] ? validate_chain+0x3880/0x58e0 [ 56.331885][ T5068] ? aa_sock_msg_perm+0x91/0x160 [ 56.336812][ T5068] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 56.342088][ T5068] ? security_socket_sendmsg+0x87/0xb0 [ 56.347636][ T5068] ? __pfx_packet_sendmsg+0x10/0x10 [ 56.352824][ T5068] __sock_sendmsg+0x221/0x270 [ 56.357496][ T5068] __sys_sendto+0x3a4/0x4f0 [ 56.361992][ T5068] ? __pfx___sys_sendto+0x10/0x10 [ 56.367017][ T5068] ? lockdep_hardirqs_on+0x98/0x140 [ 56.372216][ T5068] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 56.378543][ T5068] __x64_sys_sendto+0xde/0x100 [ 56.383328][ T5068] do_syscall_64+0xf9/0x240 [ 56.387847][ T5068] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 56.393841][ T5068] RIP: 0033:0x7f4a33ec7169 [ 56.398258][ T5068] Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 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 [ 56.417858][ T5068] RSP: 002b:00007ffc1051d5a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 56.426262][ T5068] RAX: ffffffffffffffda RBX: 00007f4a33f15070 RCX: 00007f4a33ec7169 [ 56.434224][ T5068] RDX: 000000000000ff88 RSI: 0000000020000180 RDI: 0000000000000004 [ 56.442185][ T5068] RBP: 00007ffc1051d5c8 R08: 0000000020000140 R09: 0000000000000014 [ 56.450163][ T5068] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc1051d5c4 [ 56.458147][ T5068] R13: 0000000000000000 R14: 00007ffc1051d5d0 R15: 00007f4a33f15004 [ 56.466124][ T5068] [ 56.469343][ T5068] Kernel Offset: disabled [ 56.473720][ T5068] Rebooting in 86400 seconds..