./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2319655425 <...> Warning: Permanently added '10.128.0.156' (ECDSA) to the list of known hosts. execve("./syz-executor2319655425", ["./syz-executor2319655425"], 0x7ffebe9fc1d0 /* 10 vars */) = 0 brk(NULL) = 0x555556d79000 brk(0x555556d79d00) = 0x555556d79d00 arch_prctl(ARCH_SET_FS, 0x555556d793c0) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2319655425", 4096) = 28 brk(0x555556d9ad00) = 0x555556d9ad00 brk(0x555556d9b000) = 0x555556d9b000 mprotect(0x7f0d275c4000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f0d27515060, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f0d27515cc0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f0d27515060, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f0d27515cc0}, NULL, 8) = 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=0x555556d79690) = 306 ./strace-static-x86_64: Process 306 attached [pid 306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 306] setpgid(0, 0) = 0 [pid 306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 306] write(3, "1000", 4) = 4 [pid 306] close(3) = 0 [pid 306] mkdir("./file0", 0777) = 0 [pid 306] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 306] pipe2([3, 4], 0) = 0 [pid 306] write(4, "\x15\x00\x00\x00\x65\xff\xff\x01\x80\x00\x00\x08\x00\x39\x50\x32\x30\x30\x30\x00\x00", 21) = 21 [pid 306] dup(4) = 5 [pid 306] write(5, "\x08\x0b\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\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"..., 312) = 312 [ 19.488992][ T22] audit: type=1400 audit(1653875718.929:73): avc: denied { execmem } for pid=304 comm="syz-executor231" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.514910][ T22] audit: type=1400 audit(1653875718.949:74): avc: denied { read write } for pid=304 comm="syz-executor231" name="loop0" dev="devtmpfs" ino=9358 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 19.539392][ T22] audit: type=1400 audit(1653875718.949:75): avc: denied { open } for pid=304 comm="syz-executor231" path="/dev/loop0" dev="devtmpfs" ino=9358 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 19.563768][ T22] audit: type=1400 audit(1653875718.949:76): avc: denied { ioctl } for pid=304 comm="syz-executor231" path="/dev/loop0" dev="devtmpfs" ino=9358 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 19.589584][ T22] audit: type=1400 audit(1653875718.959:77): avc: denied { mounton } for pid=306 comm="syz-executor231" path="/root/file0" dev="sda1" ino=1138 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 306] mount(NULL, "./file0", "9p", 0, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache," [pid 304] kill(-306, SIGKILL) = 0 [pid 304] kill(306, SIGKILL) = 0 [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, 0x555556d7a6e0 /* 2 entries */, 32768) = 48 [pid 304] getdents64(3, 0x555556d7a6e0 /* 0 entries */, 32768) = 0 [pid 304] close(3) = 0 [ 66.769505][ T12] cfg80211: failed to load regulatory.db