./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor691782980 <...> Warning: Permanently added '10.128.1.89' (ED25519) to the list of known hosts. execve("./syz-executor691782980", ["./syz-executor691782980"], 0x7fff1f22c830 /* 10 vars */) = 0 brk(NULL) = 0x5555573e0000 brk(0x5555573e0d00) = 0x5555573e0d00 arch_prctl(ARCH_SET_FS, 0x5555573e0380) = 0 set_tid_address(0x5555573e0650) = 370 set_robust_list(0x5555573e0660, 24) = 0 rseq(0x5555573e0ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor691782980", 4096) = 27 getrandom("\x1e\x1b\x5a\x93\x32\xe5\xc2\x6e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555573e0d00 brk(0x555557401d00) = 0x555557401d00 brk(0x555557402000) = 0x555557402000 mprotect(0x7f1e3faa0000, 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=0x5555573e0650) = 371 ./strace-static-x86_64: Process 371 attached [pid 371] set_robust_list(0x5555573e0660, 24) = 0 [pid 371] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 371] setsid() = 1 [pid 371] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 371] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 371] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 371] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 371] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 371] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 371] unshare(CLONE_NEWNS) = 0 [pid 371] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 371] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 371] unshare(CLONE_NEWCGROUP) = 0 [pid 371] unshare(CLONE_NEWUTS) = 0 [pid 371] unshare(CLONE_SYSVSEM) = 0 [pid 371] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 371] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 371] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 371] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 371] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 371] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 371] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 371] getpid() = 1 [pid 371] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e8 5d a3 e6 fd 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 [ 38.572721][ T371] RSP: 0018:ffff8881dca96dc8 EFLAGS: 00010293 [ 38.578620][ T371] RAX: ffffffff837da00c RBX: 0000000000002d51 RCX: ffff8881dc861f80 [ 38.586450][ T371] RDX: 0000000000000000 RSI: 0000000000002d51 RDI: 0000000000002d51 [ 38.594353][ T371] RBP: 0000000000002d51 R08: ffffffff837d9a07 R09: ffff8881dca96f80 [ 38.602142][ T371] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f29cd070 [ 38.609963][ T371] R13: 0000000000002d51 R14: ffff8881f29cd000 R15: 1ffff1103e539a0e [ 38.618285][ T371] FS: 00005555573e0380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 38.627395][ T371] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.633736][ T371] CR2: 000000002000d000 CR3: 00000001dca44000 CR4: 00000000003406a0 [ 38.641631][ T371] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.649440][ T371] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.658137][ T371] Call Trace: [ 38.661401][ T371] ? __die+0xb4/0x100 [ 38.665267][ T371] ? die+0x26/0x50 [ 38.668826][ T371] ? do_trap+0x1e7/0x340 [ 38.673165][ T371] ? skb_checksum_help+0x86c/0x880 [ 38.678113][ T371] ? skb_checksum_help+0x86c/0x880 [ 38.683066][ T371] ? do_invalid_op+0xfb/0x110 [ 38.687565][ T371] ? skb_checksum_help+0x86c/0x880 [ 38.692598][ T371] ? invalid_op+0x1e/0x30 [ 38.696847][ T371] ? skb_checksum_help+0x267/0x880 [ 38.701792][ T371] ? skb_checksum_help+0x86c/0x880 [ 38.706738][ T371] ? skb_checksum_help+0x86c/0x880 [ 38.711686][ T371] ? skb_checksum_help+0x86c/0x880 [ 38.716637][ T371] ip_do_fragment+0x15e/0x2200 [ 38.721245][ T371] ? ip_fragment+0x210/0x210 [ 38.725660][ T371] ? ip_frag_next+0xad0/0xad0 [ 38.730175][ T371] ? kmem_cache_free+0x10b/0x2c0 [ 38.735036][ T371] ? __ip_finish_output+0x457/0x710 [ 38.740069][ T371] ? ip_fragment+0x9a/0x210 [ 38.744424][ T371] __ip_finish_output+0x49c/0x710 [ 38.749266][ T371] ip_mc_output+0x3d4/0xa70 [ 38.753695][ T371] ? rt_set_nexthop+0x21b/0x700 [ 38.758468][ T371] ? ip_build_and_send_pkt+0xad0/0xad0 [ 38.763887][ T371] ? ip_mc_finish_output+0x340/0x340 [ 38.769518][ T371] ? __ip_local_out+0x4e8/0x4f0 [ 38.774214][ T371] ? ip_send_check+0xd0/0xd0 [ 38.778619][ T371] ? __ip_local_out+0x4f0/0x4f0 [ 38.783319][ T371] ? prandom_u32+0x236/0x270 [ 38.787820][ T371] iptunnel_xmit+0x476/0x850 [ 38.792252][ T371] ip_tunnel_xmit+0x1aa7/0x26a0 [ 38.796959][ T371] ? ip_tunnel_xmit+0x141/0x26a0 [ 38.801706][ T371] ? tnl_update_pmtu+0xbb0/0xbb0 [ 38.806481][ T371] ? gre_build_header+0x23f/0x7a0 [ 38.811427][ T371] ipgre_xmit+0x754/0xa50 [ 38.815593][ T371] dev_hard_start_xmit+0x1b7/0x6b0 [ 38.820541][ T371] __dev_queue_xmit+0x14da/0x27e0 [ 38.825939][ T371] ? dev_queue_xmit+0x20/0x20 [ 38.830647][ T371] ? virtio_net_hdr_to_skb+0x9c1/0x10c0 [ 38.836200][ T371] ? fanout_demux_rollover+0xc10/0xc10 [ 38.841599][ T371] packet_sendmsg+0x4747/0x6100 [ 38.846291][ T371] ? get_page_from_freelist+0x2d13/0x2d90 [ 38.851855][ T371] ? avc_has_perm+0x21a/0x260 [ 38.856367][ T371] ? selinux_socket_sendmsg+0x243/0x340 [ 38.861735][ T371] ? selinux_socket_accept+0x5b0/0x5b0 [ 38.867031][ T371] ? rw_copy_check_uvector+0x2a3/0x2f0 [ 38.872322][ T371] ? compat_packet_setsockopt+0x160/0x160 [ 38.877964][ T371] ? copy_page_to_iter+0x67e/0x760 [ 38.882959][ T371] ? security_socket_sendmsg+0x7d/0xa0 [ 38.888380][ T371] ? compat_packet_setsockopt+0x160/0x160 [ 38.893940][ T371] ____sys_sendmsg+0x5ac/0x8f0 [ 38.898622][ T371] ? __sys_sendmsg_sock+0x2b0/0x2b0 [ 38.903653][ T371] __sys_sendmsg+0x28b/0x380 [ 38.908082][ T371] ? ____sys_sendmsg+0x8f0/0x8f0 [ 38.912853][ T371] ? ptrace_notify+0x24c/0x350 [ 38.917489][ T371] ? __do_page_fault+0x725/0xbb0 [ 38.922229][ T371] do_syscall_64+0xca/0x1c0 [ 38.926569][ T371] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 38.932473][ T371] Modules linked in: [ 38.936340][ T371] ---[ end trace f6fc8899b35e567d ]--- [ 38.941616][ T371] RIP: 0010:skb_checksum_help+0x86c/0x880 [ 38.947171][ T371] Code: 65 16 fe e9 b3 fc ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c d0 fc ff ff 48 89 df e8 ee 64 16 fe e9 c3 fc ff ff e8 64 a3 e6 fd <0f> 0b e8 5d a3 e6 fd 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 [ 38.966616][ T371] RSP: 0018:ffff8881dca96dc8 EFLAGS: 00010293 [ 38.972499][ T371] RAX: ffffffff837da00c RBX: 0000000000002d51 RCX: ffff8881dc861f80 [ 38.980389][ T371] RDX: 0000000000000000 RSI: 0000000000002d51 RDI: 0000000000002d51 [ 38.988253][ T371] RBP: 0000000000002d51 R08: ffffffff837d9a07 R09: ffff8881dca96f80 [ 38.996195][ T371] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f29cd070 [ 39.004007][ T371] R13: 0000000000002d51 R14: ffff8881f29cd000 R15: 1ffff1103e539a0e [ 39.011828][ T371] FS: 00005555573e0380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 39.022247][ T371] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.028714][ T371] CR2: 000000002000d000 CR3: 00000001dca44000 CR4: 00000000003406a0 [ 39.036559][ T371] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.044431][ T371] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.052409][ T371] Kernel panic - not syncing: Fatal exception in interrupt [ 39.059799][ T371] Kernel Offset: disabled [ 39.064614][ T371] Rebooting in 86400 seconds..