./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1891507210 <...> Warning: Permanently added '10.128.0.141' (ECDSA) to the list of known hosts. execve("./syz-executor1891507210", ["./syz-executor1891507210"], 0x7fff29f33c30 /* 10 vars */) = 0 brk(NULL) = 0x555555c93000 brk(0x555555c93c40) = 0x555555c93c40 arch_prctl(ARCH_SET_FS, 0x555555c93300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1891507210", 4096) = 28 brk(0x555555cb4c40) = 0x555555cb4c40 brk(0x555555cb5000) = 0x555555cb5000 mprotect(0x7f6848ae6000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 305 attached , child_tidptr=0x555555c935d0) = 305 [pid 305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 305] setpgid(0, 0) = 0 [pid 305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 305] write(3, "1000", 4) = 4 [pid 305] close(3) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 305] ioctl(3, LOOP_GET_STATUS64, 0x20000200) = -1 ENXIO (No such device or address) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 [pid 305] openat(AT_FDCWD, "/proc/self/net/pfkey", O_RDONLY) = 5 [pid 305] ioctl(4, LOOP_CONFIGURE, {fd=5, block_size=4096, info={lo_offset=0, lo_number=0, lo_flags=LO_FLAGS_PARTSCAN, lo_file_name="\xf2\xd9\x32\x8a\x0c\x3d\x9e\x8c\xb2\xa9\x07\xcb\x75\x1b\x59\xfa\x2d\x89\x74\x53\x36\xe7\x21\x1d\xe1\x43\x78\x0a\xb9\xe3\x2d\x54\xe9\x54\x03\x8a\xdb\x31\x93\x72\x4b\x21\x54\x14\x13\xb2\xf1\xf2\xa7\x50\xfb\xe4\x95\x9d", ...}}) = 0 [pid 305] exit_group(0) = ? [ 19.606114][ T22] audit: type=1400 audit(1678575113.180:73): avc: denied { execmem } for pid=304 comm="syz-executor189" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.629841][ T22] audit: type=1400 audit(1678575113.200:74): avc: denied { read } for pid=305 comm="syz-executor189" name="loop0" dev="devtmpfs" ino=9306 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 305] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=305, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c935d0) = 308 ./strace-static-x86_64: Process 308 attached [pid 308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 308] setpgid(0, 0) = 0 [pid 308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 308] write(3, "1000", 4) = 4 [pid 308] close(3) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 308] ioctl(3, LOOP_GET_STATUS64, 0x20000200) = -1 EOVERFLOW (Value too large for defined data type) [ 19.653718][ T22] audit: type=1400 audit(1678575113.200:75): avc: denied { open } for pid=305 comm="syz-executor189" path="/dev/loop0" dev="devtmpfs" ino=9306 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 19.678166][ T22] audit: type=1400 audit(1678575113.230:76): avc: denied { ioctl } for pid=305 comm="syz-executor189" path="/dev/loop0" dev="devtmpfs" ino=9306 ioctlcmd=0x4c05 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 308] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 304] kill(-308, SIGKILL) = 0 [pid 304] kill(308, SIGKILL) = 0 [pid 308] <... openat resumed>) = ? [pid 304] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 304] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 304] getdents64(3, 0x555555c94620 /* 2 entries */, 32768) = 48 [pid 304] getdents64(3, 0x555555c94620 /* 0 entries */, 32768) = 0 [pid 304] close(3) = 0 [ 66.192756][ T12] cfg80211: failed to load regulatory.db [ 81.218102][ T155] udevd[155]: worker [307] /devices/virtual/block/loop0 is taking a long time [ 201.361110][ T155] udevd[155]: worker [307] /devices/virtual/block/loop0 timeout; kill it [ 201.369671][ T155] udevd[155]: seq 2306 '/devices/virtual/block/loop0' killed