./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3746385209 <...> Warning: Permanently added '10.128.1.23' (ED25519) to the list of known hosts. execve("./syz-executor3746385209", ["./syz-executor3746385209"], 0x7ffef2f7fad0 /* 10 vars */) = 0 brk(NULL) = 0x555556945000 brk(0x555556945d00) = 0x555556945d00 arch_prctl(ARCH_SET_FS, 0x555556945380) = 0 set_tid_address(0x555556945650) = 355 set_robust_list(0x555556945660, 24) = 0 rseq(0x555556945ca0, 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-executor3746385209", 4096) = 28 getrandom("\x49\x23\xcc\x5c\x18\x06\x2a\x34", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556945d00 brk(0x555556966d00) = 0x555556966d00 brk(0x555556967000) = 0x555556967000 mprotect(0x7f96ba8b7000, 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=0x555556945650) = 357 ./strace-static-x86_64: Process 357 attached [pid 357] set_robust_list(0x555556945660, 24) = 0 [pid 357] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 357] setsid() = 1 [pid 357] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 357] unshare(CLONE_NEWNS) = 0 [pid 357] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 357] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 357] unshare(CLONE_NEWCGROUP) = 0 [pid 357] unshare(CLONE_NEWUTS) = 0 [pid 357] unshare(CLONE_SYSVSEM) = 0 [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] getpid() = 1 [pid 357] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 53 [ 23.276494][ T357] RSP: 0018:ffff8881dc7f6dc8 EFLAGS: 00010293 [ 23.282392][ T357] RAX: ffffffff837df353 RBX: 0000000000000074 RCX: ffff8881e256ee40 [ 23.290207][ T357] RDX: 0000000000000000 RSI: 0000000000000074 RDI: 0000000000000229 [ 23.298015][ T357] RBP: 0000000000000229 R08: ffffffff837dedcf R09: ffffed103b8fedaa [ 23.305826][ T357] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f46e8930 [ 23.313637][ T357] R13: 0000000000000227 R14: ffff8881f46e88c0 R15: 1ffff1103e8dd126 [ 23.321448][ T357] FS: 0000555556945380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 23.330215][ T357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.336638][ T357] CR2: 000000002000d000 CR3: 00000001dc6e1000 CR4: 00000000003406a0 [ 23.344449][ T357] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.352258][ T357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.360068][ T357] Call Trace: [ 23.363219][ T357] ? __die+0xb4/0x100 [ 23.367013][ T357] ? die+0x26/0x50 [ 23.370574][ T357] ? do_trap+0x1e7/0x340 [ 23.374655][ T357] ? skb_checksum_help+0x873/0x880 [ 23.379600][ T357] ? skb_checksum_help+0x873/0x880 [ 23.384548][ T357] ? do_invalid_op+0xfb/0x110 [ 23.389061][ T357] ? skb_checksum_help+0x873/0x880 [ 23.394018][ T357] ? invalid_op+0x1e/0x30 [ 23.398185][ T357] ? skb_checksum_help+0x2ef/0x880 [ 23.403126][ T357] ? skb_checksum_help+0x873/0x880 [ 23.408075][ T357] ? skb_checksum_help+0x873/0x880 [ 23.413013][ T357] ? skb_checksum_help+0x873/0x880 [ 23.418019][ T357] ip_do_fragment+0x15e/0x2200 [ 23.422566][ T357] ? ip_fragment+0x210/0x210 [ 23.426988][ T357] ? ip_frag_next+0xad0/0xad0 [ 23.431521][ T357] ? kmem_cache_free+0x10b/0x2c0 [ 23.436275][ T357] ? __ip_finish_output+0x457/0x710 [ 23.441308][ T357] ? ip_fragment+0x9a/0x210 [ 23.445648][ T357] __ip_finish_output+0x49c/0x710 [ 23.450511][ T357] ip_mc_output+0x3d4/0xa70 [ 23.454848][ T357] ? rt_set_nexthop+0x21b/0x700 [ 23.459536][ T357] ? ip_build_and_send_pkt+0xad0/0xad0 [ 23.464847][ T357] ? ip_mc_finish_output+0x340/0x340 [ 23.469951][ T357] ? __ip_local_out+0x4e8/0x4f0 [ 23.474636][ T357] ? ip_send_check+0xd0/0xd0 [ 23.479073][ T357] ? __ip_local_out+0x4f0/0x4f0 [ 23.483757][ T357] ? prandom_u32+0x236/0x270 [ 23.488179][ T357] iptunnel_xmit+0x476/0x850 [ 23.492606][ T357] ip_tunnel_xmit+0x1aa7/0x26a0 [ 23.497291][ T357] ? ip_tunnel_xmit+0x151/0x26a0 [ 23.502064][ T357] ? tnl_update_pmtu+0xbb0/0xbb0 [ 23.506835][ T357] ? gre_build_header+0x23f/0x7a0 [ 23.511696][ T357] ipgre_xmit+0x754/0xa50 [ 23.515892][ T357] dev_hard_start_xmit+0x1b7/0x6b0 [ 23.520814][ T357] __dev_queue_xmit+0x14da/0x27e0 [ 23.525681][ T357] ? dev_queue_xmit+0x20/0x20 [ 23.530186][ T357] ? virtio_net_hdr_to_skb+0xa10/0x1130 [ 23.535564][ T357] ? fanout_demux_rollover+0xc10/0xc10 [ 23.540859][ T357] packet_sendmsg+0x4747/0x6100 [ 23.545547][ T357] ? avc_has_perm+0x21a/0x260 [ 23.550061][ T357] ? selinux_socket_sendmsg+0x243/0x340 [ 23.555439][ T357] ? selinux_socket_accept+0x5b0/0x5b0 [ 23.560737][ T357] ? rw_copy_check_uvector+0x2a3/0x2f0 [ 23.566036][ T357] ? compat_packet_setsockopt+0x160/0x160 [ 23.571586][ T357] ? iov_iter_npages+0x65e/0xc30 [ 23.576359][ T357] ? security_socket_sendmsg+0x7d/0xa0 [ 23.581657][ T357] ? compat_packet_setsockopt+0x160/0x160 [ 23.587205][ T357] ____sys_sendmsg+0x5ac/0x8f0 [ 23.591925][ T357] ? __sys_sendmsg_sock+0x2b0/0x2b0 [ 23.596925][ T357] __sys_sendmsg+0x28b/0x380 [ 23.601354][ T357] ? ____sys_sendmsg+0x8f0/0x8f0 [ 23.606137][ T357] ? ptrace_notify+0x24c/0x350 [ 23.610750][ T357] ? __do_page_fault+0x725/0xbb0 [ 23.615498][ T357] do_syscall_64+0xca/0x1c0 [ 23.619840][ T357] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 23.625565][ T357] Modules linked in: [ 23.629389][ T357] ---[ end trace abbc6bb0818e58e3 ]--- [ 23.634604][ T357] RIP: 0010:skb_checksum_help+0x873/0x880 [ 23.640196][ T357] Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c d0 fc ff ff 48 89 df e8 1e 22 16 fe e9 c3 fc ff ff e8 54 51 e6 fd 0f 0b e8 4d 51 e6 fd <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 53 [ 23.659641][ T357] RSP: 0018:ffff8881dc7f6dc8 EFLAGS: 00010293 [ 23.665490][ T357] RAX: ffffffff837df353 RBX: 0000000000000074 RCX: ffff8881e256ee40 [ 23.673350][ T357] RDX: 0000000000000000 RSI: 0000000000000074 RDI: 0000000000000229 [ 23.681179][ T357] RBP: 0000000000000229 R08: ffffffff837dedcf R09: ffffed103b8fedaa [ 23.688967][ T357] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f46e8930 [ 23.696737][ T357] R13: 0000000000000227 R14: ffff8881f46e88c0 R15: 1ffff1103e8dd126 [ 23.704583][ T357] FS: 0000555556945380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 23.713348][ T357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.719763][ T357] CR2: 000000002000d000 CR3: 00000001dc6e1000 CR4: 00000000003406a0 [ 23.727550][ T357] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.735394][ T357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.743200][ T357] Kernel panic - not syncing: Fatal exception in interrupt [ 23.750357][ T357] Kernel Offset: disabled [ 23.754471][ T357] Rebooting in 86400 seconds..