./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1002565280 <...> Warning: Permanently added '10.128.1.89' (ED25519) to the list of known hosts. execve("./syz-executor1002565280", ["./syz-executor1002565280"], 0x7fff027c31e0 /* 10 vars */) = 0 brk(NULL) = 0x555556f61000 brk(0x555556f61d00) = 0x555556f61d00 arch_prctl(ARCH_SET_FS, 0x555556f61380) = 0 set_tid_address(0x555556f61650) = 286 set_robust_list(0x555556f61660, 24) = 0 rseq(0x555556f61ca0, 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-executor1002565280", 4096) = 28 getrandom("\x9a\x5c\xa8\x52\x0f\x91\x76\x97", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556f61d00 brk(0x555556f82d00) = 0x555556f82d00 brk(0x555556f83000) = 0x555556f83000 mprotect(0x7f1a5c792000, 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 mkdir("./syzkaller.AMYYlo", 0700) = 0 chmod("./syzkaller.AMYYlo", 0777) = 0 chdir("./syzkaller.AMYYlo") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556f61650) = 287 ./strace-static-x86_64: Process 287 attached [pid 287] set_robust_list(0x555556f61660, 24) = 0 [pid 287] chdir("./0") = 0 [pid 287] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 287] setpgid(0, 0) = 0 [pid 287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 287] write(3, "1000", 4) = 4 [pid 287] close(3) = 0 [pid 287] symlink("/dev/binderfs", "./binderfs") = 0 [pid 287] memfd_create("syzkaller", 0) = 3 [pid 287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1a542de000 [pid 287] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 287] munmap(0x7f1a542de000, 138412032) = 0 [pid 287] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 287] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 287] close(3) = 0 [ 21.462343][ T24] audit: type=1400 audit(1713063402.989:66): avc: denied { execmem } for pid=286 comm="syz-executor100" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.465836][ T24] audit: type=1400 audit(1713063402.999:67): avc: denied { read write } for pid=286 comm="syz-executor100" name="loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 21.475143][ T24] audit: type=1400 audit(1713063402.999:68): avc: denied { open } for pid=286 comm="syz-executor100" path="/dev/loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 21.478568][ T24] audit: type=1400 audit(1713063402.999:69): avc: denied { ioctl } for pid=286 comm="syz-executor100" path="/dev/loop0" dev="devtmpfs" ino=111 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 21.503532][ T287] ====================================================== [ 21.503532][ T287] WARNING: the mand mount option is being deprecated and [ 21.503532][ T287] will be removed in v5.15! [ 21.503532][ T287] ====================================================== [pid 287] close(4) = 0 [pid 287] mkdir("./file0", 0777) = 0 [pid 287] mount("/dev/loop0", "./file0", "exfat", MS_NODEV|MS_NOEXEC|MS_MANDLOCK|MS_BORN, "iocharset=ascii,discard,dmask=00000000000000000000007,uid=0x0000000000000000,dmask=00000000000000000"...) = 0 [pid 287] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 287] chdir("./file0") = 0 [pid 287] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 287] ioctl(4, LOOP_CLR_FD) = 0 [pid 287] close(4) = 0 [pid 287] mount("./file0", "./file0", NULL, MS_NOSUID|MS_BIND|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, NULL) = 0 [pid 287] exit_group(0) = ? [pid 287] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=287, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555556f626f0 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|000, st_size=61440, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=61440, ...}, AT_EMPTY_PATH) = 0 [ 21.506892][ T24] audit: type=1400 audit(1713063403.039:70): avc: denied { mounton } for pid=287 comm="syz-executor100" path="/root/syzkaller.AMYYlo/0/file0" dev="sda1" ino=1930 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 21.556952][ T287] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x205ad3fc, utbl_chksum : 0xe619d30d) [ 21.571477][ T24] audit: type=1400 audit(1713063403.109:71): avc: denied { mount } for pid=287 comm="syz-executor100" name="/" dev="loop0" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 21.599463][ T24] audit: type=1400 audit(1713063403.109:72): avc: denied { mounton } for pid=287 comm="syz-executor100" path="/root/syzkaller.AMYYlo/0/file0/file0" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.625600][ T24] audit: type=1400 audit(1713063403.109:73): avc: denied { unmount } for pid=286 comm="syz-executor100" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1