./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor567826758 <...> pid=5799 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 41.392998][ T29] audit: type=1400 audit(1735805228.613:83): avc: denied { write } for pid=5802 comm="sftp-server" path="pipe:[5169]" dev="pipefs" ino=5169 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 41.885852][ T29] audit: type=1400 audit(1735805229.103:84): avc: denied { read } for pid=5177 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 [ 41.907764][ T29] audit: type=1400 audit(1735805229.103:85): avc: denied { append } for pid=5177 comm="syslogd" name="messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 41.930100][ T29] audit: type=1400 audit(1735805229.103:86): avc: denied { open } for pid=5177 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 41.952983][ T29] audit: type=1400 audit(1735805229.103:87): avc: denied { getattr } for pid=5177 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 Warning: Permanently added '10.128.1.63' (ED25519) to the list of known hosts. execve("./syz-executor567826758", ["./syz-executor567826758"], 0x7fffaf53b850 /* 10 vars */) = 0 brk(NULL) = 0x55557b699000 brk(0x55557b699d00) = 0x55557b699d00 arch_prctl(ARCH_SET_FS, 0x55557b699380) = 0 set_tid_address(0x55557b699650) = 5819 set_robust_list(0x55557b699660, 24) = 0 rseq(0x55557b699ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor567826758", 4096) = 27 getrandom("\xec\x8b\x10\xdd\xec\x40\x04\x21", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557b699d00 brk(0x55557b6bad00) = 0x55557b6bad00 brk(0x55557b6bb000) = 0x55557b6bb000 mprotect(0x7f245e041000, 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 5820 attached , child_tidptr=0x55557b699650) = 5820 [pid 5820] set_robust_list(0x55557b699660, 24) = 0 [pid 5820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5820] getppid() = 0 [pid 5820] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5820] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5820] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5820] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5820] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [ 53.396727][ T29] audit: type=1400 audit(1735805240.613:88): avc: denied { execmem } for pid=5819 comm="syz-executor567" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 5820] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5820] unshare(CLONE_NEWNS) = 0 [pid 5820] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5820] unshare(CLONE_NEWIPC) = 0 [pid 5820] unshare(CLONE_NEWCGROUP) = 0 [pid 5820] unshare(CLONE_NEWUTS) = 0 [pid 5820] unshare(CLONE_SYSVSEM) = 0 [pid 5820] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [ 53.476988][ T29] audit: type=1400 audit(1735805240.693:89): avc: denied { mounton } for pid=5820 comm="syz-executor567" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1 [pid 5820] write(3, "16777216", 8) = 8 [pid 5820] close(3) = 0 [pid 5820] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5820] write(3, "536870912", 9) = 9 [pid 5820] close(3) = 0 [pid 5820] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5820] write(3, "1024", 4) = 4 [pid 5820] close(3) = 0 [pid 5820] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5820] write(3, "8192", 4) = 4 [pid 5820] close(3) = 0 [pid 5820] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5820] write(3, "1024", 4) = 4 [pid 5820] close(3) = 0 [pid 5820] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5820] write(3, "1024", 4) = 4 [pid 5820] close(3) = 0 [pid 5820] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5820] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5820] close(3) = 0 [pid 5820] getpid() = 1 [pid 5820] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5829] set_robust_list(0x55557b699660, 24 [pid 5820] <... clone resumed>, child_tidptr=0x55557b699650) = 2 [pid 5829] <... set_robust_list resumed>) = 0 [pid 5829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5829] setpgid(0, 0) = 0 [pid 5829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5829] write(3, "1000", 4) = 4 [pid 5829] close(3) = 0 [pid 5829] write(1, "executing program\n", 18executing program ) = 18 [pid 5829] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 [pid 5829] socket(AF_CAN, SOCK_DGRAM, CAN_J1939) = 4 [pid 5829] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 5 [pid 5829] ioctl(5, SIOCGIFINDEX, {ifr_name="vcan0", ifr_ifindex=13}) = 0 [pid 5829] socket(AF_CAN, SOCK_DGRAM, CAN_J1939) = 6 [pid 5829] bind(6, {sa_family=AF_CAN, sa_data="\x00\x00\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00"}, 24) = 0 [pid 5829] ioctl(4, SIOCGIFINDEX, {ifr_name="vcan0", ifr_ifindex=13}) = 0 [ 57.162482][ T5829] netlink: 4 bytes leftover after parsing attributes in process `syz-executor567'. [pid 5829] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x24\x00\x00\x00\x11\x00\x01\x00\x2b\xbd\x74\x00\x00\x00\x00\x00\x00\x00\x74\x00\x0d\x00\x00\x00\x06\x00\x0d\x00\xe0\xff\x04\x00\x0a\x00\x00\x00", iov_len=36}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5820] kill(-2, SIGKILL) = 0 [pid 5820] kill(2, SIGKILL) = 0 [pid 5820] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5820] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5820] getdents64(3, 0x55557b69a6f0 /* 2 entries */, 32768) = 48 [pid 5820] getdents64(3, 0x55557b69a6f0 /* 0 entries */, 32768) = 0 [pid 5820] close(3) = 0 [ 76.132287][ T970] cfg80211: failed to load regulatory.db [ 197.239405][ T5829] unregister_netdevice: waiting for vcan0 to become free. Usage count = 2