./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3371230753 <...> Warning: Permanently added '10.128.1.24' (ED25519) to the list of known hosts. execve("./syz-executor3371230753", ["./syz-executor3371230753"], 0x7ffdccac80f0 /* 10 vars */) = 0 brk(NULL) = 0x55558b513000 brk(0x55558b513d00) = 0x55558b513d00 arch_prctl(ARCH_SET_FS, 0x55558b513380) = 0 set_tid_address(0x55558b513650) = 5835 set_robust_list(0x55558b513660, 24) = 0 rseq(0x55558b513ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3371230753", 4096) = 28 getrandom("\x55\xee\x9a\x7a\x75\x93\xed\x8f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558b513d00 brk(0x55558b534d00) = 0x55558b534d00 brk(0x55558b535000) = 0x55558b535000 mprotect(0x7f89db99b000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5836 attached [pid 5836] set_robust_list(0x55558b513660, 24 [pid 5835] <... clone resumed>, child_tidptr=0x55558b513650) = 5836 [pid 5836] <... set_robust_list resumed>) = 0 [pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5836] getppid() = 0 [pid 5836] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5836] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5836] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5836] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5836] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5836] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5836] unshare(CLONE_NEWNS) = 0 [pid 5836] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5836] unshare(CLONE_NEWIPC) = 0 [pid 5836] unshare(CLONE_NEWCGROUP) = 0 [pid 5836] unshare(CLONE_NEWUTS) = 0 [pid 5836] unshare(CLONE_SYSVSEM) = 0 [pid 5836] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "16777216", 8) = 8 [pid 5836] close(3) = 0 [pid 5836] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "536870912", 9) = 9 [pid 5836] close(3) = 0 [pid 5836] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "1024", 4) = 4 [pid 5836] close(3) = 0 [pid 5836] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "8192", 4) = 4 [pid 5836] close(3) = 0 [pid 5836] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "1024", 4) = 4 [pid 5836] close(3) = 0 [pid 5836] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "1024", 4) = 4 [pid 5836] close(3) = 0 [pid 5836] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5836] close(3) = 0 [pid 5836] getpid() = 1 [pid 5836] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5848] set_robust_list(0x55558b513660, 24 [pid 5836] <... clone resumed>, child_tidptr=0x55558b513650) = 2 [pid 5848] <... set_robust_list resumed>) = 0 [pid 5848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5848] setpgid(0, 0) = 0 [pid 5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "1000", 4) = 4 [pid 5848] close(3) = 0 [pid 5848] write(1, "executing program\n", 18executing program ) = 18 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 3 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 4 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 5 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 6 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 7 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 8 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 9 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 10 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 11 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 12 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 13 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 14 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 15 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 16 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 17 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 18 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 19 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 20 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 21 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 22 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 23 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 24 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 25 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 26 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 27 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 28 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 29 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 30 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 31 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 32 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 33 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 34 [pid 5848] socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6) = 35 [pid 5848] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 36 [pid 5848] socket(AF_CAN, SOCK_DGRAM, CAN_J1939) = 37 [pid 5848] ioctl(37, SIOCGIFINDEX, {ifr_name="vcan0", ifr_ifindex=13}) = 0 [pid 5848] bind(37, {sa_family=AF_CAN, sa_data="\x00\x00\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x06\x00\xfe\x00\x00\x00"}, 24) = 0 [ 102.547206][ T5848] netlink: 4 bytes leftover after parsing attributes in process `syz-executor337'. [pid 5848] sendmsg(36, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x24\x00\x00\x00\x11\x00\x01\x00\x28\xbd\x70\x00\x00\x00\x00\x00\x00\x00\x74\x00\x0d\x00\x00\x00\xfd\xff\xeb\xff\x01\x00\x01\x00\xf2\xff\x0d\x00", iov_len=36}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_PEEK|MSG_PROBE|MSG_NOSIGNAL}, MSG_PROBE|MSG_DONTWAIT|MSG_CONFIRM [pid 5836] kill(-2, SIGKILL) = 0 [pid 5836] kill(2, SIGKILL) = 0 [pid 5836] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5836] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5836] getdents64(3, 0x55558b5146f0 /* 2 entries */, 32768) = 48 [pid 5836] getdents64(3, 0x55558b5146f0 /* 0 entries */, 32768) = 0 [pid 5836] close(3) = 0 [ 242.776752][ T5848] unregister_netdevice: waiting for vcan0 to become free. Usage count = 2