./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1928155557 <...> forked to background, child pid 192 no interfaces have a carrier Starting sshd: OK syzkaller syzkaller login: [ 17.087231][ T23] kauditd_printk_skb: 60 callbacks suppressed [ 17.087238][ T23] audit: type=1400 audit(1666285709.649:71): avc: denied { transition } for pid=265 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 17.091582][ T23] audit: type=1400 audit(1666285709.649:72): avc: denied { write } for pid=265 comm="sh" path="pipe:[10624]" dev="pipefs" ino=10624 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 Warning: Permanently added '10.128.0.5' (ECDSA) to the list of known hosts. execve("./syz-executor1928155557", ["./syz-executor1928155557"], 0x7ffd4fb45ab0 /* 10 vars */) = 0 brk(NULL) = 0x555555a5b000 brk(0x555555a5bc40) = 0x555555a5bc40 arch_prctl(ARCH_SET_FS, 0x555555a5b300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1928155557", 4096) = 28 brk(0x555555a7cc40) = 0x555555a7cc40 brk(0x555555a7d000) = 0x555555a7d000 mprotect(0x7f06d5ebb000, 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, child_tidptr=0x555555a5b5d0) = 306 ./strace-static-x86_64: Process 306 attached [pid 306] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 306] setsid() = 1 [pid 306] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [ 25.889841][ T23] audit: type=1400 audit(1666285718.449:73): avc: denied { execmem } for pid=304 comm="syz-executor192" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.914081][ T23] audit: type=1400 audit(1666285718.469:74): avc: denied { mounton } for pid=306 comm="syz-executor192" path="/sys/fs/fuse/connections" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1 [pid 306] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 306] unshare(CLONE_NEWNS) = 0 [pid 306] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 306] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 306] unshare(CLONE_NEWCGROUP) = 0 [pid 306] unshare(CLONE_NEWUTS) = 0 [pid 306] unshare(CLONE_SYSVSEM) = 0 [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] getpid() = 1 [pid 306] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<ffff8881dbdc5100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.601150][ T93] ^ [ 27.607784][ T93] ffff8881dbdc5180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.615809][ T93] ffff8881dbdc5200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.623831][ T93] ================================================================== [ 27.631852][ T93] Disabling lock debugging due to kernel taint [pid 306] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=306, si_uid=0, si_status=1, si_utime=1, si_stime=56} --- exit_group(0) = ? +++ exited with 0 +++