./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1129726705 <...> Warning: Permanently added '10.128.0.151' (ED25519) to the list of known hosts. execve("./syz-executor1129726705", ["./syz-executor1129726705"], 0x7ffe4b675480 /* 10 vars */) = 0 brk(NULL) = 0x5555616b9000 brk(0x5555616b9d00) = 0x5555616b9d00 arch_prctl(ARCH_SET_FS, 0x5555616b9380) = 0 set_tid_address(0x5555616b9650) = 5851 set_robust_list(0x5555616b9660, 24) = 0 rseq(0x5555616b9ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1129726705", 4096) = 28 getrandom("\x27\x9f\x79\x91\xd0\xac\x9c\xd5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555616b9d00 brk(0x5555616dad00) = 0x5555616dad00 brk(0x5555616db000) = 0x5555616db000 mprotect(0x7f72f2637000, 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./strace-static-x86_64: Process 5852 attached [pid 5852] set_robust_list(0x5555616b9660, 24 [pid 5851] <... clone resumed>, child_tidptr=0x5555616b9650) = 5852 [pid 5852] <... set_robust_list resumed>) = 0 [pid 5852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5852] getppid() = 0 [pid 5852] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5852] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5852] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5852] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5852] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5852] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5852] unshare(CLONE_NEWNS) = 0 [pid 5852] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5852] unshare(CLONE_NEWIPC) = 0 [pid 5852] unshare(CLONE_NEWCGROUP) = 0 [pid 5852] unshare(CLONE_NEWUTS) = 0 [pid 5852] unshare(CLONE_SYSVSEM) = 0 [pid 5852] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "16777216", 8) = 8 [pid 5852] close(3) = 0 [pid 5852] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "536870912", 9) = 9 [pid 5852] close(3) = 0 [pid 5852] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "1024", 4) = 4 [pid 5852] close(3) = 0 [pid 5852] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "8192", 4) = 4 [pid 5852] close(3) = 0 [pid 5852] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "1024", 4) = 4 [pid 5852] close(3) = 0 [pid 5852] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "1024", 4) = 4 [pid 5852] close(3) = 0 [pid 5852] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5852] close(3) = 0 [pid 5852] getpid() = 1 [pid 5852] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5852] kill(-2, SIGKILL) = 0 [pid 5852] kill(2, SIGKILL) = 0 [pid 5852] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5852] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5852] getdents64(3, 0x5555616ba6f0 /* 2 entries */, 32768) = 48 [pid 5852] getdents64(3, 0x5555616ba6f0 /* 0 entries */, 32768) = 0 [pid 5852] close(3) = 0 [ 430.976137][ T5859] unregister_netdevice: waiting for vcan0 to become free. Usage count = 2