./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2766647609 <...> DUID 00:04:83:15:3d:b3:f9:44:11:d6:e6:e1:d9:1f:49:4d:f4:66 forked to background, child pid 3183 [ 25.920900][ T3184] 8021q: adding VLAN 0 to HW filter on device bond0 [ 25.924927][ T3184] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.121' (ECDSA) to the list of known hosts. execve("./syz-executor2766647609", ["./syz-executor2766647609"], 0x7ffdc35f3ad0 /* 10 vars */) = 0 brk(NULL) = 0x555556326000 brk(0x555556326c40) = 0x555556326c40 arch_prctl(ARCH_SET_FS, 0x555556326300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2766647609", 4096) = 28 brk(0x555556347c40) = 0x555556347c40 brk(0x555556348000) = 0x555556348000 mprotect(0x7f0fbeec1000, 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 mount(NULL, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, NULL) = -1 EBUSY (Device or resource busy) openat(AT_FDCWD, "/proc/sys/fs/binfmt_misc/register", O_WRONLY|O_CLOEXEC) = 3 write(3, "\x3a\x73\x79\x7a\x30\x3a\x4d\x3a\x30\x3a\x01\x3a\x3a\x2e\x2f\x66\x69\x6c\x65\x30\x3a", 21) = 21 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/binfmt_misc/register", O_WRONLY|O_CLOEXEC) = 3 write(3, "\x3a\x73\x79\x7a\x31\x3a\x4d\x3a\x31\x3a\x02\x3a\x3a\x2e\x2f\x66\x69\x6c\x65\x30\x3a\x50\x4f\x43", 24) = 24 close(3) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555563265d0) = 3605 ./strace-static-x86_64: Process 3605 attached [pid 3605] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3605] setsid() = 1 [pid 3605] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3605] unshare(CLONE_NEWNS) = 0 [pid 3605] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3605] unshare(CLONE_NEWIPC) = 0 [pid 3605] unshare(CLONE_NEWCGROUP) = 0 [pid 3605] unshare(CLONE_NEWUTS) = 0 [pid 3605] unshare(CLONE_SYSVSEM) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "16777216", 8) = 8 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "536870912", 9) = 9 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "8192", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3605] close(3) = 0 [pid 3605] getpid() = 1 [pid 3605] 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 [ 49.186576][ T3605] RSP: 0018:ffffc90002eef4b8 EFLAGS: 00010293 [ 49.192632][ T3605] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000000000 [ 49.200586][ T3605] RDX: ffff888024ad8000 RSI: ffffffff8760ed0f RDI: 0000000000000004 [ 49.208541][ T3605] RBP: 0000000000005dbc R08: 0000000000000004 R09: 0000000000000fe0 [ 49.216496][ T3605] R10: 0000000000000fe4 R11: 0000000000000000 R12: 0000000000000fe0 [ 49.224452][ T3605] R13: ffff888015ce33c0 R14: 1ffff920005dde9b R15: 0000000000000012 [ 49.232408][ T3605] FS: 0000555556326300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 49.241342][ T3605] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.247909][ T3605] CR2: 00000000200015c0 CR3: 0000000071cc8000 CR4: 00000000003506f0 [ 49.255864][ T3605] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.263817][ T3605] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.271773][ T3605] Call Trace: [ 49.275034][ T3605] [ 49.277961][ T3605] ? skb_eth_gso_segment+0x250/0x250 [ 49.283238][ T3605] __skb_gso_segment+0x327/0x6e0 [ 49.288169][ T3605] validate_xmit_skb+0x6bc/0xf10 [ 49.293094][ T3605] validate_xmit_skb_list+0xbc/0x120 [ 49.298374][ T3605] sch_direct_xmit+0x3d1/0xbe0 [ 49.303122][ T3605] ? lock_release+0x780/0x780 [ 49.307787][ T3605] ? lock_release+0x780/0x780 [ 49.312450][ T3605] ? dev_watchdog+0x8f0/0x8f0 [ 49.317113][ T3605] ? do_raw_spin_trylock+0xb0/0x180 [ 49.322294][ T3605] ? do_raw_spin_lock+0x270/0x2a0 [ 49.327306][ T3605] __dev_queue_xmit+0x14a1/0x3a00 [ 49.332431][ T3605] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 49.337715][ T3605] ? skb_partial_csum_set+0x21b/0x2b0 [ 49.343083][ T3605] ? virtio_net_hdr_to_skb.constprop.0+0xf3/0x1150 [ 49.349581][ T3605] ? tpacket_destruct_skb+0x7c0/0x7c0 [ 49.355064][ T3605] packet_sendmsg+0x21cb/0x5550 [ 49.360005][ T3605] ? aa_sk_perm+0x30f/0xaa0 [ 49.364503][ T3605] ? _copy_from_user+0xf9/0x170 [ 49.369344][ T3605] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 49.375224][ T3605] ? aa_af_perm+0x230/0x230 [ 49.379718][ T3605] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 49.384992][ T3605] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 49.390869][ T3605] sock_sendmsg+0xcf/0x120 [ 49.395272][ T3605] ____sys_sendmsg+0x6eb/0x810 [ 49.400022][ T3605] ? kernel_sendmsg+0x50/0x50 [ 49.404683][ T3605] ? do_recvmmsg+0x6d0/0x6d0 [ 49.409256][ T3605] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.415232][ T3605] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.421200][ T3605] ___sys_sendmsg+0xf3/0x170 [ 49.425777][ T3605] ? sendmsg_copy_msghdr+0x160/0x160 [ 49.431048][ T3605] ? lock_release+0x780/0x780 [ 49.435712][ T3605] ? ptrace_stop+0x590/0xb30 [ 49.440288][ T3605] ? do_raw_spin_lock+0x120/0x2a0 [ 49.445310][ T3605] ? rwlock_bug.part.0+0x90/0x90 [ 49.450231][ T3605] ? _raw_spin_lock_irq+0x41/0x50 [ 49.455333][ T3605] ? __fget_light+0x20f/0x270 [ 49.460002][ T3605] __x64_sys_sendmsg+0x132/0x220 [ 49.464925][ T3605] ? __sys_sendmsg+0x1b0/0x1b0 [ 49.469674][ T3605] ? _raw_spin_unlock_irq+0x2a/0x40 [ 49.474860][ T3605] ? ptrace_notify+0xfa/0x140 [ 49.479522][ T3605] do_syscall_64+0x35/0xb0 [ 49.483923][ T3605] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 49.489805][ T3605] RIP: 0033:0x7f0fbee4b709 [ 49.494203][ T3605] 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 [ 49.514028][ T3605] RSP: 002b:00007ffd929489f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.522448][ T3605] RAX: ffffffffffffffda RBX: 00007ffd92948a20 RCX: 00007f0fbee4b709 [ 49.530419][ T3605] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 49.538392][ T3605] RBP: 0000000000000003 R08: bb1414ac92948a27 R09: bb1414ac92948a27 [ 49.546353][ T3605] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 49.554315][ T3605] R13: 00007ffd92948a10 R14: 00007ffd92948a08 R15: 00007ffd92948a04 [ 49.562283][ T3605] [ 49.565290][ T3605] Modules linked in: [ 49.569237][ T3605] ---[ end trace 0000000000000000 ]--- [ 49.569247][ T3605] RIP: 0010:skb_mac_gso_segment+0x48f/0x530 [ 49.569277][ T3605] 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 [ 49.569296][ T3605] RSP: 0018:ffffc90002eef4b8 EFLAGS: 00010293 [ 49.569314][ T3605] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000000000 [ 49.569328][ T3605] RDX: ffff888024ad8000 RSI: ffffffff8760ed0f RDI: 0000000000000004 [ 49.569342][ T3605] RBP: 0000000000005dbc R08: 0000000000000004 R09: 0000000000000fe0 [ 49.569356][ T3605] R10: 0000000000000fe4 R11: 0000000000000000 R12: 0000000000000fe0 [ 49.569369][ T3605] R13: ffff888015ce33c0 R14: 1ffff920005dde9b R15: 0000000000000012 [ 49.569384][ T3605] FS: 0000555556326300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 49.569406][ T3605] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.569420][ T3605] CR2: 00000000200015c0 CR3: 0000000071cc8000 CR4: 00000000003506f0 [ 49.569431][ T3605] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.569441][ T3605] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.569453][ T3605] Kernel panic - not syncing: Fatal exception in interrupt [ 49.692896][ T3605] Kernel Offset: disabled [ 49.697220][ T3605] Rebooting in 86400 seconds..