./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor822556747 <...> Warning: Permanently added '10.128.0.14' (ED25519) to the list of known hosts. execve("./syz-executor822556747", ["./syz-executor822556747"], 0x7ffc8beb3580 /* 10 vars */) = 0 brk(NULL) = 0x555556c80000 brk(0x555556c80d00) = 0x555556c80d00 arch_prctl(ARCH_SET_FS, 0x555556c80380) = 0 set_tid_address(0x555556c80650) = 356 set_robust_list(0x555556c80660, 24) = 0 rseq(0x555556c80ca0, 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-executor822556747", 4096) = 27 getrandom("\xb6\x43\x2a\x7e\x52\x0b\xa0\x90", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556c80d00 brk(0x555556ca1d00) = 0x555556ca1d00 brk(0x555556ca2000) = 0x555556ca2000 mprotect(0x7fbb4fe96000, 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=0x555556c80650) = 358 ./strace-static-x86_64: Process 358 attached [pid 358] set_robust_list(0x555556c80660, 24) = 0 [pid 358] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 358] setsid() = 1 [pid 358] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 358] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 358] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 358] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 358] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 358] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 358] unshare(CLONE_NEWNS) = 0 [pid 358] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 358] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 358] unshare(CLONE_NEWCGROUP) = 0 [pid 358] unshare(CLONE_NEWUTS) = 0 [pid 358] unshare(CLONE_SYSVSEM) = 0 [pid 358] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 358] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 358] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 358] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 358] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 358] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 358] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 358] getpid() = 1 [pid 358] 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 [ 23.325712][ T358] RSP: 0018:ffff8881dc07ee68 EFLAGS: 00010293 [ 23.331614][ T358] RAX: ffffffff837defe3 RBX: 0000000000000673 RCX: ffff8881dc618fc0 [ 23.339424][ T358] RDX: 0000000000000000 RSI: 0000000000000673 RDI: 0000000000009e75 [ 23.347236][ T358] RBP: 0000000000009e75 R08: ffffffff837dea5f R09: ffffed103b80fdbe [ 23.355067][ T358] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f0da4430 [ 23.362862][ T358] R13: 0000000000009e73 R14: ffff8881f0da43c0 R15: 1ffff1103e1b4886 [ 23.370671][ T358] FS: 0000555556c80380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.379436][ T358] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.385859][ T358] CR2: 000000002000e000 CR3: 00000001dc764000 CR4: 00000000003406b0 [ 23.393672][ T358] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.401487][ T358] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.409294][ T358] Call Trace: [ 23.412424][ T358] ? __die+0xb4/0x100 [ 23.416237][ T358] ? die+0x26/0x50 [ 23.419800][ T358] ? do_trap+0x1e7/0x340 [ 23.423877][ T358] ? skb_checksum_help+0x873/0x880 [ 23.428823][ T358] ? skb_checksum_help+0x873/0x880 [ 23.433769][ T358] ? do_invalid_op+0xfb/0x110 [ 23.438284][ T358] ? skb_checksum_help+0x873/0x880 [ 23.443234][ T358] ? invalid_op+0x1e/0x30 [ 23.447832][ T358] ? skb_checksum_help+0x2ef/0x880 [ 23.452776][ T358] ? skb_checksum_help+0x873/0x880 [ 23.457725][ T358] ? skb_checksum_help+0x873/0x880 [ 23.462672][ T358] ? skb_checksum_help+0x873/0x880 [ 23.467621][ T358] ip_do_fragment+0x15e/0x2200 [ 23.472221][ T358] ? ip_fragment+0x210/0x210 [ 23.476644][ T358] ? ip_frag_next+0xad0/0xad0 [ 23.481424][ T358] ? kmem_cache_free+0x10b/0x2c0 [ 23.486194][ T358] ? __ip_finish_output+0x457/0x710 [ 23.491228][ T358] ? ip_fragment+0x9a/0x210 [ 23.495568][ T358] __ip_finish_output+0x49c/0x710 [ 23.500429][ T358] ip_output+0x19b/0x3a0 [ 23.504515][ T358] ? ip_finish_output+0x1d0/0x1d0 [ 23.509368][ T358] ? ip_mc_finish_output+0x340/0x340 [ 23.514503][ T358] iptunnel_xmit+0x476/0x850 [ 23.518935][ T358] ip_tunnel_xmit+0x1aa7/0x26a0 [ 23.523612][ T358] ? ip_tunnel_xmit+0x1c1/0x26a0 [ 23.528380][ T358] ? tnl_update_pmtu+0xbb0/0xbb0 [ 23.533150][ T358] ? skb_mac_gso_segment+0x28e/0x490 [ 23.538276][ T358] ? gre_build_header+0x23f/0x7a0 [ 23.543134][ T358] ipgre_xmit+0x81a/0xbf0 [ 23.547302][ T358] dev_hard_start_xmit+0x1b7/0x6b0 [ 23.552246][ T358] __dev_queue_xmit+0x14da/0x27e0 [ 23.557108][ T358] ? dev_queue_xmit+0x20/0x20 [ 23.561617][ T358] ? virtio_net_hdr_to_skb+0xa10/0x1130 [ 23.567013][ T358] ? fanout_demux_rollover+0xc10/0xc10 [ 23.572304][ T358] packet_sendmsg+0x4747/0x6100 [ 23.576987][ T358] ? avc_has_perm+0x21a/0x260 [ 23.581500][ T358] ? selinux_socket_sendmsg+0x243/0x340 [ 23.586886][ T358] ? selinux_socket_accept+0x5b0/0x5b0 [ 23.592267][ T358] ? rw_copy_check_uvector+0x2a3/0x2f0 [ 23.597555][ T358] ? compat_packet_setsockopt+0x160/0x160 [ 23.603106][ T358] ? __rhashtable_walk_find_next+0x370/0x710 [ 23.608933][ T358] ? security_socket_sendmsg+0x7d/0xa0 [ 23.614217][ T358] ? compat_packet_setsockopt+0x160/0x160 [ 23.619774][ T358] ____sys_sendmsg+0x5ac/0x8f0 [ 23.624381][ T358] ? __sys_sendmsg_sock+0x2b0/0x2b0 [ 23.629404][ T358] __sys_sendmsg+0x28b/0x380 [ 23.633833][ T358] ? ____sys_sendmsg+0x8f0/0x8f0 [ 23.638615][ T358] ? ptrace_notify+0x24c/0x350 [ 23.643213][ T358] ? __do_page_fault+0x725/0xbb0 [ 23.647981][ T358] do_syscall_64+0xca/0x1c0 [ 23.652323][ T358] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 23.658044][ T358] Modules linked in: [ 23.662285][ T358] ---[ end trace 3ef932202fae4c6b ]--- [ 23.667545][ T358] RIP: 0010:skb_checksum_help+0x873/0x880 [ 23.673063][ T358] Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c d0 fc ff ff 48 89 df e8 2e 2b 16 fe e9 c3 fc ff ff e8 44 57 e6 fd 0f 0b e8 3d 57 e6 fd <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 53 [ 23.692621][ T358] RSP: 0018:ffff8881dc07ee68 EFLAGS: 00010293 [ 23.698505][ T358] RAX: ffffffff837defe3 RBX: 0000000000000673 RCX: ffff8881dc618fc0 [ 23.706300][ T358] RDX: 0000000000000000 RSI: 0000000000000673 RDI: 0000000000009e75 [ 23.714131][ T358] RBP: 0000000000009e75 R08: ffffffff837dea5f R09: ffffed103b80fdbe [ 23.721937][ T358] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f0da4430 [ 23.729753][ T358] R13: 0000000000009e73 R14: ffff8881f0da43c0 R15: 1ffff1103e1b4886 [ 23.737561][ T358] FS: 0000555556c80380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.746398][ T358] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.752841][ T358] CR2: 000000002000e000 CR3: 00000001dc764000 CR4: 00000000003406b0 [ 23.760647][ T358] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.768466][ T358] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.776259][ T358] Kernel panic - not syncing: Fatal exception in interrupt [ 23.783478][ T358] Kernel Offset: disabled [ 23.787596][ T358] Rebooting in 86400 seconds..