./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2105738976 <...> no interfaces have a carrier forked to background, child pid 3179 [ 20.531254][ T3180] 8021q: adding VLAN 0 to HW filter on device bond0 [ 20.534086][ T3180] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.65' (ECDSA) to the list of known hosts. execve("./syz-executor2105738976", ["./syz-executor2105738976"], 0x7fff5f96a9b0 /* 10 vars */) = 0 brk(NULL) = 0x55555730f000 brk(0x55555730fc40) = 0x55555730fc40 arch_prctl(ARCH_SET_FS, 0x55555730f300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2105738976", 4096) = 28 brk(0x555557330c40) = 0x555557330c40 brk(0x555557331000) = 0x555557331000 mprotect(0x7f4b95e16000, 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./strace-static-x86_64: Process 3601 attached , child_tidptr=0x55555730f5d0) = 3601 [pid 3601] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3601] setsid() = 1 [pid 3601] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3601] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3601] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3601] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3601] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3601] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3601] unshare(CLONE_NEWNS) = 0 [pid 3601] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3601] unshare(CLONE_NEWIPC) = 0 [pid 3601] unshare(CLONE_NEWCGROUP) = 0 [pid 3601] unshare(CLONE_NEWUTS) = 0 [pid 3601] unshare(CLONE_SYSVSEM) = 0 [pid 3601] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3601] write(3, "16777216", 8) = 8 [pid 3601] close(3) = 0 [pid 3601] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3601] write(3, "536870912", 9) = 9 [pid 3601] close(3) = 0 [pid 3601] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3601] write(3, "1024", 4) = 4 [pid 3601] close(3) = 0 [pid 3601] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3601] write(3, "8192", 4) = 4 [pid 3601] close(3) = 0 [pid 3601] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3601] write(3, "1024", 4) = 4 [pid 3601] close(3) = 0 [pid 3601] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3601] write(3, "1024", 4) = 4 [pid 3601] close(3) = 0 [pid 3601] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3601] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3601] close(3) = 0 [pid 3601] getpid() = 1 [pid 3601] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 48 89 df e8 97 44 66 fa e9 7f fd ff ff e8 ad 44 66 fa e9 48 [ 40.300237][ T3601] RSP: 0018:ffffc90002e2f4b8 EFLAGS: 00010293 [ 40.306307][ T3601] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000000000 [ 40.314346][ T3601] RDX: ffff88805bb58000 RSI: ffffffff8760ed0f RDI: 0000000000000004 [ 40.322302][ T3601] RBP: 0000000000005dbc R08: 0000000000000004 R09: 0000000000000fe0 [ 40.330272][ T3601] R10: 0000000000000fe4 R11: 0000000000000000 R12: 0000000000000fe0 [ 40.338232][ T3601] R13: ffff88807194d780 R14: 1ffff920005c5e9b R15: 0000000000000012 [ 40.346197][ T3601] FS: 000055555730f300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 40.355136][ T3601] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.361708][ T3601] CR2: 00000000200015c0 CR3: 0000000071ff8000 CR4: 0000000000350ee0 [ 40.369683][ T3601] Call Trace: [ 40.372944][ T3601] [ 40.375857][ T3601] ? skb_eth_gso_segment+0x250/0x250 [ 40.381127][ T3601] __skb_gso_segment+0x327/0x6e0 [ 40.386051][ T3601] validate_xmit_skb+0x6bc/0xf10 [ 40.390971][ T3601] validate_xmit_skb_list+0xbc/0x120 [ 40.396241][ T3601] sch_direct_xmit+0x3d1/0xbe0 [ 40.400987][ T3601] ? lock_release+0x780/0x780 [ 40.405651][ T3601] ? lock_release+0x780/0x780 [ 40.410311][ T3601] ? dev_watchdog+0x8f0/0x8f0 [ 40.414974][ T3601] ? do_raw_spin_trylock+0xb0/0x180 [ 40.420173][ T3601] ? do_raw_spin_lock+0x270/0x2a0 [ 40.425269][ T3601] __dev_queue_xmit+0x14a1/0x3a00 [ 40.430298][ T3601] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 40.435588][ T3601] ? skb_partial_csum_set+0x21b/0x2b0 [ 40.440959][ T3601] ? virtio_net_hdr_to_skb.constprop.0+0xf3/0x1150 [ 40.447458][ T3601] ? tpacket_destruct_skb+0x7c0/0x7c0 [ 40.452846][ T3601] packet_sendmsg+0x21cb/0x5550 [ 40.457695][ T3601] ? aa_sk_perm+0x30f/0xaa0 [ 40.462450][ T3601] ? _copy_from_user+0xf9/0x170 [ 40.467308][ T3601] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 40.473185][ T3601] ? aa_af_perm+0x230/0x230 [ 40.477692][ T3601] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 40.483139][ T3601] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 40.489013][ T3601] sock_sendmsg+0xcf/0x120 [ 40.493414][ T3601] ____sys_sendmsg+0x6eb/0x810 [ 40.498173][ T3601] ? kernel_sendmsg+0x50/0x50 [ 40.502844][ T3601] ? do_recvmmsg+0x6d0/0x6d0 [ 40.507417][ T3601] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 40.513490][ T3601] ? lockdep_hardirqs_on+0x79/0x100 [ 40.518689][ T3601] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 40.524829][ T3601] ___sys_sendmsg+0xf3/0x170 [ 40.529571][ T3601] ? sendmsg_copy_msghdr+0x160/0x160 [ 40.534938][ T3601] ? lock_release+0x780/0x780 [ 40.539598][ T3601] ? ptrace_stop+0x590/0xb30 [ 40.544643][ T3601] ? do_raw_spin_lock+0x120/0x2a0 [ 40.549685][ T3601] ? rwlock_bug.part.0+0x90/0x90 [ 40.554624][ T3601] ? _raw_spin_lock_irq+0x41/0x50 [ 40.559667][ T3601] ? __fget_light+0x20f/0x270 [ 40.564342][ T3601] __x64_sys_sendmsg+0x132/0x220 [ 40.569276][ T3601] ? __sys_sendmsg+0x1b0/0x1b0 [ 40.574052][ T3601] ? _raw_spin_unlock_irq+0x2a/0x40 [ 40.579244][ T3601] ? ptrace_notify+0xfa/0x140 [ 40.583909][ T3601] do_syscall_64+0x35/0xb0 [ 40.588311][ T3601] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 40.594193][ T3601] RIP: 0033:0x7f4b95da06c9 [ 40.598606][ T3601] 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 [ 40.618407][ T3601] RSP: 002b:00007ffd7defc4c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 40.626832][ T3601] RAX: ffffffffffffffda RBX: 00007ffd7defc4f0 RCX: 00007f4b95da06c9 [ 40.634798][ T3601] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 40.642759][ T3601] RBP: 0000000000000003 R08: bb1414ac00000050 R09: bb1414ac00000050 [ 40.650724][ T3601] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 40.658703][ T3601] R13: 00007ffd7defc4e0 R14: 00007ffd7defc4d8 R15: 00007ffd7defc4d4 [ 40.666669][ T3601] [ 40.669672][ T3601] Modules linked in: [ 40.673641][ T3601] ---[ end trace 0000000000000000 ]--- [ 40.673651][ T3601] RIP: 0010:skb_mac_gso_segment+0x48f/0x530 [ 40.673685][ T3601] Code: 00 48 c7 c7 00 96 d4 8a c6 05 cb d3 45 06 01 e8 26 bb d0 01 e9 2f fd ff ff 49 c7 c4 ea ff ff ff e9 f1 fe ff ff e8 91 84 19 fa <0f> 0b 48 89 df e8 97 44 66 fa e9 7f fd ff ff e8 ad 44 66 fa e9 48 [ 40.673712][ T3601] RSP: 0018:ffffc90002e2f4b8 EFLAGS: 00010293 [ 40.673735][ T3601] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000000000 [ 40.673753][ T3601] RDX: ffff88805bb58000 RSI: ffffffff8760ed0f RDI: 0000000000000004 [ 40.673772][ T3601] RBP: 0000000000005dbc R08: 0000000000000004 R09: 0000000000000fe0 [ 40.673790][ T3601] R10: 0000000000000fe4 R11: 0000000000000000 R12: 0000000000000fe0 [ 40.673806][ T3601] R13: ffff88807194d780 R14: 1ffff920005c5e9b R15: 0000000000000012 [ 40.673823][ T3601] FS: 000055555730f300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 40.673840][ T3601] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.673852][ T3601] CR2: 00000000200015c0 CR3: 0000000071ff8000 CR4: 0000000000350ee0 [ 40.673867][ T3601] Kernel panic - not syncing: Fatal exception in interrupt [ 40.781883][ T3601] Kernel Offset: disabled [ 40.786211][ T3601] Rebooting in 86400 seconds..