./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2408256957 <...> DUID 00:04:f2:7f:36:b6:03:80:f9:c3:71:03:f9:5e:f9:cf:ad:4a forked to background, child pid 4671 [ 49.911737][ T4672] 8021q: adding VLAN 0 to HW filter on device bond0 [ 49.925736][ T4672] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.5' (ECDSA) to the list of known hosts. execve("./syz-executor2408256957", ["./syz-executor2408256957"], 0x7ffed418ce10 /* 10 vars */) = 0 brk(NULL) = 0x555555710000 brk(0x555555710c40) = 0x555555710c40 arch_prctl(ARCH_SET_FS, 0x555555710300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2408256957", 4096) = 28 brk(0x555555731c40) = 0x555555731c40 brk(0x555555732000) = 0x555555732000 mprotect(0x7f8249000000, 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=0x5555557105d0) = 5007 ./strace-static-x86_64: Process 5007 attached [pid 5007] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5007] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5007] setsid() = 1 [pid 5007] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5007] unshare(CLONE_NEWNS) = 0 [pid 5007] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5007] unshare(CLONE_NEWIPC) = 0 [pid 5007] unshare(CLONE_NEWCGROUP) = 0 [pid 5007] unshare(CLONE_NEWUTS) = 0 [pid 5007] unshare(CLONE_SYSVSEM) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "16777216", 8) = 8 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "536870912", 9) = 9 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "8192", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5007] close(3) = 0 [pid 5007] getpid() = 1 [pid 5007] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 5b 5d 41 5c 41 5d 41 5e e9 e8 95 76 f9 e8 e3 95 76 f9 48 89 [ 86.718093][ T5007] RSP: 0018:ffffc90003abf6b0 EFLAGS: 00010286 [ 86.724240][ T5007] RAX: 0000000000000000 RBX: ffff8880283d2000 RCX: 0000000000000000 [ 86.732248][ T5007] RDX: ffff8880284ed940 RSI: ffffffff814c03b7 RDI: 0000000000000001 [ 86.740302][ T5007] RBP: ffff8880287a0000 R08: 0000000000000001 R09: 0000000000000000 [ 86.748350][ T5007] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880287a00f0 [ 86.756404][ T5007] R13: ffff8880283d2370 R14: ffff8880287a0000 R15: 000000000000000e [ 86.764451][ T5007] FS: 0000555555710300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 86.773476][ T5007] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.780108][ T5007] CR2: 0000000020001000 CR3: 000000002a5d1000 CR4: 00000000003506f0 [ 86.788191][ T5007] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.796243][ T5007] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.804327][ T5007] Call Trace: [ 86.807637][ T5007] [ 86.810599][ T5007] ? __warn+0xe6/0x390 [ 86.814782][ T5007] ? skb_warn_bad_offload+0x119/0x230 [ 86.820221][ T5007] ? report_bug+0x2da/0x500 [ 86.824901][ T5007] ? handle_bug+0x3c/0x70 [ 86.829293][ T5007] ? exc_invalid_op+0x18/0x50 [ 86.834075][ T5007] ? asm_exc_invalid_op+0x1a/0x20 [ 86.839187][ T5007] ? __warn_printk+0x187/0x310 [ 86.844070][ T5007] ? skb_warn_bad_offload+0x119/0x230 [ 86.849521][ T5007] __skb_gso_segment+0x3eb/0x6e0 [ 86.854585][ T5007] validate_xmit_skb+0x69c/0xef0 [ 86.859581][ T5007] validate_xmit_skb_list+0xc0/0x130 [ 86.865000][ T5007] sch_direct_xmit+0x3d5/0xc30 [ 86.869820][ T5007] ? lock_sync+0x190/0x190 [ 86.874347][ T5007] ? lock_sync+0x190/0x190 [ 86.878829][ T5007] ? dev_watchdog+0x8b0/0x8b0 [ 86.883607][ T5007] ? do_raw_spin_trylock+0xb4/0x180 [ 86.888880][ T5007] ? do_raw_spin_lock+0x1f0/0x2b0 [ 86.894036][ T5007] __dev_queue_xmit+0x14d6/0x3b10 [ 86.899303][ T5007] ? netdev_core_pick_tx+0x390/0x390 [ 86.904703][ T5007] ? skb_set_owner_w+0x1b0/0x450 [ 86.909737][ T5007] ? hash_and_copy_to_iter+0x210/0x210 [ 86.915332][ T5007] ? virtio_net_hdr_to_skb.constprop.0+0x3c0/0x1220 [ 86.921988][ T5007] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 86.928710][ T5007] ? packet_rcv_spkt+0x620/0x620 [ 86.933751][ T5007] packet_xmit+0x260/0x390 [ 86.938254][ T5007] packet_sendmsg+0x347f/0x5030 [ 86.943284][ T5007] ? aa_sk_perm+0x31d/0xb10 [ 86.947856][ T5007] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 86.953966][ T5007] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 86.959943][ T5007] ? aa_af_perm+0x240/0x240 [ 86.964567][ T5007] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 86.969904][ T5007] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 86.975919][ T5007] sock_sendmsg+0xde/0x190 [ 86.980390][ T5007] __sys_sendto+0x23a/0x340 [ 86.985008][ T5007] ? __ia32_sys_getpeername+0xb0/0xb0 [ 86.990437][ T5007] ? do_raw_spin_lock+0x124/0x2b0 [ 86.995584][ T5007] ? _raw_spin_lock_irq+0x45/0x50 [ 87.000693][ T5007] ? ptrace_notify+0xfe/0x140 [ 87.005479][ T5007] ? lock_downgrade+0x690/0x690 [ 87.010413][ T5007] ? _raw_spin_unlock_irq+0x23/0x50 [ 87.015741][ T5007] ? lockdep_hardirqs_on+0x7d/0x100 [ 87.021011][ T5007] __x64_sys_sendto+0xe1/0x1b0 [ 87.025889][ T5007] ? syscall_trace_enter.constprop.0+0xb0/0x1e0 [ 87.032205][ T5007] do_syscall_64+0x39/0xb0 [ 87.036745][ T5007] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 87.042717][ T5007] RIP: 0033:0x7f8248f8c529 [ 87.047236][ T5007] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 87.066928][ T5007] RSP: 002b:00007ffc9c5caec8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 87.075438][ T5007] RAX: ffffffffffffffda RBX: 00007ffc9c5caee8 RCX: 00007f8248f8c529 [ 87.083490][ T5007] RDX: 0000000000002378 RSI: 0000000020000080 RDI: 0000000000000003 [ 87.091510][ T5007] RBP: 0000000000000003 R08: 0000000000000000 R09: 00000000000002ff [ 87.099584][ T5007] R10: 0000000004000002 R11: 0000000000000246 R12: 00007ffc9c5caef0 [ 87.107645][ T5007] R13: 00007ffc9c5caf10 R14: 0000000000000000 R15: 0000000000000000 [ 87.115731][ T5007] [ 87.118794][ T5007] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 87.126098][ T5007] CPU: 0 PID: 5007 Comm: syz-executor240 Not tainted 6.4.0-rc5-syzkaller-00134-g21225873be14 #0 [ 87.136533][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 87.146606][ T5007] Call Trace: [ 87.149901][ T5007] [ 87.152849][ T5007] dump_stack_lvl+0xd9/0x150 [ 87.157473][ T5007] panic+0x686/0x730 [ 87.161404][ T5007] ? panic_smp_self_stop+0xa0/0xa0 [ 87.166554][ T5007] ? show_trace_log_lvl+0x284/0x390 [ 87.171811][ T5007] ? skb_warn_bad_offload+0x119/0x230 [ 87.177222][ T5007] check_panic_on_warn+0xb1/0xc0 [ 87.182213][ T5007] __warn+0xf2/0x390 [ 87.186150][ T5007] ? skb_warn_bad_offload+0x119/0x230 [ 87.191576][ T5007] report_bug+0x2da/0x500 [ 87.195953][ T5007] handle_bug+0x3c/0x70 [ 87.200132][ T5007] exc_invalid_op+0x18/0x50 [ 87.204665][ T5007] asm_exc_invalid_op+0x1a/0x20 [ 87.209577][ T5007] RIP: 0010:skb_warn_bad_offload+0x119/0x230 [ 87.215704][ T5007] Code: 70 03 00 00 e8 18 96 76 f9 4c 8d a5 f0 00 00 00 e8 0c 96 76 f9 4c 89 e9 4c 89 e2 4c 89 f6 48 c7 c7 00 36 5e 8b e8 d7 51 3e f9 <0f> 0b 5b 5d 41 5c 41 5d 41 5e e9 e8 95 76 f9 e8 e3 95 76 f9 48 89 [ 87.235345][ T5007] RSP: 0018:ffffc90003abf6b0 EFLAGS: 00010286 [ 87.241445][ T5007] RAX: 0000000000000000 RBX: ffff8880283d2000 RCX: 0000000000000000 [ 87.249458][ T5007] RDX: ffff8880284ed940 RSI: ffffffff814c03b7 RDI: 0000000000000001 [ 87.257461][ T5007] RBP: ffff8880287a0000 R08: 0000000000000001 R09: 0000000000000000 [ 87.265457][ T5007] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880287a00f0 [ 87.273448][ T5007] R13: ffff8880283d2370 R14: ffff8880287a0000 R15: 000000000000000e [ 87.281796][ T5007] ? __warn_printk+0x187/0x310 [ 87.286615][ T5007] __skb_gso_segment+0x3eb/0x6e0 [ 87.291598][ T5007] validate_xmit_skb+0x69c/0xef0 [ 87.296568][ T5007] validate_xmit_skb_list+0xc0/0x130 [ 87.301883][ T5007] sch_direct_xmit+0x3d5/0xc30 [ 87.306680][ T5007] ? lock_sync+0x190/0x190 [ 87.311132][ T5007] ? lock_sync+0x190/0x190 [ 87.315583][ T5007] ? dev_watchdog+0x8b0/0x8b0 [ 87.320286][ T5007] ? do_raw_spin_trylock+0xb4/0x180 [ 87.325523][ T5007] ? do_raw_spin_lock+0x1f0/0x2b0 [ 87.330596][ T5007] __dev_queue_xmit+0x14d6/0x3b10 [ 87.335663][ T5007] ? netdev_core_pick_tx+0x390/0x390 [ 87.340976][ T5007] ? skb_set_owner_w+0x1b0/0x450 [ 87.345955][ T5007] ? hash_and_copy_to_iter+0x210/0x210 [ 87.351445][ T5007] ? virtio_net_hdr_to_skb.constprop.0+0x3c0/0x1220 [ 87.358073][ T5007] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 87.364709][ T5007] ? packet_rcv_spkt+0x620/0x620 [ 87.369691][ T5007] packet_xmit+0x260/0x390 [ 87.374143][ T5007] packet_sendmsg+0x347f/0x5030 [ 87.379056][ T5007] ? aa_sk_perm+0x31d/0xb10 [ 87.383586][ T5007] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 87.389602][ T5007] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 87.395531][ T5007] ? aa_af_perm+0x240/0x240 [ 87.400065][ T5007] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 87.405380][ T5007] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 87.411311][ T5007] sock_sendmsg+0xde/0x190 [ 87.415758][ T5007] __sys_sendto+0x23a/0x340 [ 87.420381][ T5007] ? __ia32_sys_getpeername+0xb0/0xb0 [ 87.425782][ T5007] ? do_raw_spin_lock+0x124/0x2b0 [ 87.430847][ T5007] ? _raw_spin_lock_irq+0x45/0x50 [ 87.435924][ T5007] ? ptrace_notify+0xfe/0x140 [ 87.440630][ T5007] ? lock_downgrade+0x690/0x690 [ 87.445522][ T5007] ? _raw_spin_unlock_irq+0x23/0x50 [ 87.450754][ T5007] ? lockdep_hardirqs_on+0x7d/0x100 [ 87.455985][ T5007] __x64_sys_sendto+0xe1/0x1b0 [ 87.460774][ T5007] ? syscall_trace_enter.constprop.0+0xb0/0x1e0 [ 87.467081][ T5007] do_syscall_64+0x39/0xb0 [ 87.471553][ T5007] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 87.477498][ T5007] RIP: 0033:0x7f8248f8c529 [ 87.481942][ T5007] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 87.501578][ T5007] RSP: 002b:00007ffc9c5caec8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 87.510015][ T5007] RAX: ffffffffffffffda RBX: 00007ffc9c5caee8 RCX: 00007f8248f8c529 [ 87.518010][ T5007] RDX: 0000000000002378 RSI: 0000000020000080 RDI: 0000000000000003 [ 87.526003][ T5007] RBP: 0000000000000003 R08: 0000000000000000 R09: 00000000000002ff [ 87.534025][ T5007] R10: 0000000004000002 R11: 0000000000000246 R12: 00007ffc9c5caef0 [ 87.542037][ T5007] R13: 00007ffc9c5caf10 R14: 0000000000000000 R15: 0000000000000000 [ 87.550078][ T5007] [ 87.553406][ T5007] Kernel Offset: disabled [ 87.557853][ T5007] Rebooting in 86400 seconds..