./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3978894751 <...> no interfaces have a carrier forked to background, child pid 3182 [ 26.787356][ T3183] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.796965][ T3183] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.2' (ECDSA) to the list of known hosts. execve("./syz-executor3978894751", ["./syz-executor3978894751"], 0x7ffe6113d700 /* 10 vars */) = 0 brk(NULL) = 0x555556358000 brk(0x555556358c40) = 0x555556358c40 arch_prctl(ARCH_SET_FS, 0x555556358300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3978894751", 4096) = 28 brk(0x555556379c40) = 0x555556379c40 brk(0x55555637a000) = 0x55555637a000 mprotect(0x7faf1fe02000, 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=0x5555563585d0) = 3604 ./strace-static-x86_64: Process 3604 attached [pid 3604] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3604] setsid() = 1 [pid 3604] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3604] unshare(CLONE_NEWNS) = 0 [pid 3604] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3604] unshare(CLONE_NEWIPC) = 0 [pid 3604] unshare(CLONE_NEWCGROUP) = 0 [pid 3604] unshare(CLONE_NEWUTS) = 0 [pid 3604] unshare(CLONE_SYSVSEM) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "16777216", 8) = 8 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "536870912", 9) = 9 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "1024", 4) = 4 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "8192", 4) = 4 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "1024", 4) = 4 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "1024", 4) = 4 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3604] close(3) = 0 [pid 3604] getpid() = 1 [pid 3604] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 48 89 df e8 27 1f 68 fa e9 7f fd ff ff e8 3d 1f 68 fa e9 48 [ 49.415352][ T3604] RSP: 0018:ffffc90002e8f4b8 EFLAGS: 00010293 [ 49.421403][ T3604] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000000000 [ 49.429357][ T3604] RDX: ffff888022ea3b00 RSI: ffffffff875ddb0f RDI: 0000000000000003 [ 49.437317][ T3604] RBP: 000000000000e4e3 R08: 0000000000000fe0 R09: 000000000000e4e3 [ 49.445278][ T3604] R10: ffffffff875dd7ac R11: 0000000000000000 R12: 0000000000000fe0 [ 49.453408][ T3604] R13: ffff88801c0a5000 R14: 1ffff920005d1e9b R15: 0000000000000012 [ 49.461451][ T3604] FS: 0000555556358300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 49.470368][ T3604] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.476935][ T3604] CR2: 0000000020002000 CR3: 000000001a4e5000 CR4: 00000000003506e0 [ 49.484892][ T3604] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.492847][ T3604] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.500807][ T3604] Call Trace: [ 49.504073][ T3604] [ 49.507003][ T3604] ? skb_eth_gso_segment+0x250/0x250 [ 49.512285][ T3604] __skb_gso_segment+0x327/0x6e0 [ 49.517239][ T3604] validate_xmit_skb+0x6bc/0xf10 [ 49.522167][ T3604] validate_xmit_skb_list+0xbc/0x120 [ 49.527441][ T3604] sch_direct_xmit+0x3d1/0xbe0 [ 49.532195][ T3604] ? lock_release+0x780/0x780 [ 49.536860][ T3604] ? lock_release+0x780/0x780 [ 49.541525][ T3604] ? dev_watchdog+0x8f0/0x8f0 [ 49.546624][ T3604] ? do_raw_spin_trylock+0xb0/0x180 [ 49.551811][ T3604] ? do_raw_spin_lock+0x280/0x2a0 [ 49.556825][ T3604] __dev_queue_xmit+0x14a1/0x3a00 [ 49.561843][ T3604] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 49.567116][ T3604] ? skb_partial_csum_set+0x21b/0x2b0 [ 49.572476][ T3604] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 49.578788][ T3604] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 49.584490][ T3604] ? virtio_net_hdr_to_skb.constprop.0+0xf3/0x1150 [ 49.590980][ T3604] ? tpacket_destruct_skb+0x7c0/0x7c0 [ 49.596340][ T3604] packet_sendmsg+0x21cb/0x5550 [ 49.601181][ T3604] ? aa_sk_perm+0x30f/0xaa0 [ 49.605670][ T3604] ? _copy_from_user+0xf9/0x170 [ 49.610511][ T3604] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 49.616389][ T3604] ? aa_af_perm+0x230/0x230 [ 49.621051][ T3604] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.627277][ T3604] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.633506][ T3604] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 49.639398][ T3604] sock_sendmsg+0xcf/0x120 [ 49.643800][ T3604] ____sys_sendmsg+0x6eb/0x810 [ 49.648650][ T3604] ? kernel_sendmsg+0x50/0x50 [ 49.653311][ T3604] ? do_recvmmsg+0x6d0/0x6d0 [ 49.657888][ T3604] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.663857][ T3604] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.669834][ T3604] ___sys_sendmsg+0xf3/0x170 [ 49.674413][ T3604] ? sendmsg_copy_msghdr+0x160/0x160 [ 49.679685][ T3604] ? lock_release+0x780/0x780 [ 49.684446][ T3604] ? ptrace_stop+0x590/0xb30 [ 49.689199][ T3604] ? do_raw_spin_lock+0x120/0x2a0 [ 49.694211][ T3604] ? rwlock_bug.part.0+0x90/0x90 [ 49.699169][ T3604] ? _raw_spin_lock_irq+0x41/0x50 [ 49.704203][ T3604] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 49.710708][ T3604] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.716939][ T3604] ? __fget_light+0x20f/0x270 [ 49.721624][ T3604] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.727879][ T3604] __x64_sys_sendmsg+0x132/0x220 [ 49.732815][ T3604] ? __sys_sendmsg+0x1b0/0x1b0 [ 49.737566][ T3604] ? _raw_spin_unlock_irq+0x2a/0x40 [ 49.742750][ T3604] ? ptrace_notify+0xfa/0x140 [ 49.747418][ T3604] do_syscall_64+0x35/0xb0 [ 49.751824][ T3604] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 49.757908][ T3604] RIP: 0033:0x7faf1fd8d679 [ 49.762316][ T3604] 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 [ 49.782015][ T3604] RSP: 002b:00007ffc8b0bbda8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.790416][ T3604] RAX: ffffffffffffffda RBX: 00007ffc8b0bbdd0 RCX: 00007faf1fd8d679 [ 49.798374][ T3604] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 49.806327][ T3604] RBP: 0000000000000003 R08: bb1414ac8b0bbdd7 R09: bb1414ac8b0bbdd7 [ 49.814292][ T3604] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 49.822596][ T3604] R13: 00007ffc8b0bbdc0 R14: 00007ffc8b0bbdb8 R15: 00007ffc8b0bbdb4 [ 49.830555][ T3604] [ 49.833563][ T3604] Modules linked in: [ 49.837538][ T3604] ---[ end trace 0000000000000000 ]--- [ 49.837549][ T3604] RIP: 0010:skb_mac_gso_segment+0x48f/0x530 [ 49.837583][ T3604] Code: 00 48 c7 c7 00 21 d4 8a c6 05 16 3c 48 06 01 e8 90 be d0 01 e9 2f fd ff ff 49 c7 c4 ea ff ff ff e9 f1 fe ff ff e8 51 d9 1b fa <0f> 0b 48 89 df e8 27 1f 68 fa e9 7f fd ff ff e8 3d 1f 68 fa e9 48 [ 49.837606][ T3604] RSP: 0018:ffffc90002e8f4b8 EFLAGS: 00010293 [ 49.837625][ T3604] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000000000 [ 49.837640][ T3604] RDX: ffff888022ea3b00 RSI: ffffffff875ddb0f RDI: 0000000000000003 [ 49.837660][ T3604] RBP: 000000000000e4e3 R08: 0000000000000fe0 R09: 000000000000e4e3 [ 49.837671][ T3604] R10: ffffffff875dd7ac R11: 0000000000000000 R12: 0000000000000fe0 [ 49.837682][ T3604] R13: ffff88801c0a5000 R14: 1ffff920005d1e9b R15: 0000000000000012 [ 49.837695][ T3604] FS: 0000555556358300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 49.837715][ T3604] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.837729][ T3604] CR2: 0000000020002000 CR3: 000000001a4e5000 CR4: 00000000003506e0 [ 49.837743][ T3604] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.837757][ T3604] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.837773][ T3604] Kernel panic - not syncing: Fatal exception in interrupt [ 49.961824][ T3604] Kernel Offset: disabled [ 49.966142][ T3604] Rebooting in 86400 seconds..