./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3808967233 <...> Warning: Permanently added '10.128.0.60' (ED25519) to the list of known hosts. execve("./syz-executor3808967233", ["./syz-executor3808967233"], 0x7ffd4d723f90 /* 10 vars */) = 0 brk(NULL) = 0x55557b5e3000 brk(0x55557b5e3d00) = 0x55557b5e3d00 arch_prctl(ARCH_SET_FS, 0x55557b5e3380) = 0 set_tid_address(0x55557b5e3650) = 5820 set_robust_list(0x55557b5e3660, 24) = 0 rseq(0x55557b5e3ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3808967233", 4096) = 28 getrandom("\xf5\x7b\x71\x01\x17\xe7\xdc\x54", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557b5e3d00 brk(0x55557b604d00) = 0x55557b604d00 brk(0x55557b605000) = 0x55557b605000 mprotect(0x7f6a75635000, 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 5821 attached , child_tidptr=0x55557b5e3650) = 5821 [pid 5820] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5821] set_robust_list(0x55557b5e3660, 24) = 0 ./strace-static-x86_64: Process 5822 attached [pid 5820] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5822 [pid 5822] set_robust_list(0x55557b5e3660, 24 [pid 5821] mkdir("./syzkaller.iUgDk6", 0700 [pid 5820] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5822] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5823 attached [pid 5822] mkdir("./syzkaller.fo1KDd", 0700 [pid 5823] set_robust_list(0x55557b5e3660, 24) = 0 [pid 5822] <... mkdir resumed>) = 0 [pid 5821] <... mkdir resumed>) = 0 [pid 5820] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5823 [pid 5823] mkdir("./syzkaller.zYaXie", 0700 [pid 5821] chmod("./syzkaller.iUgDk6", 0777 [pid 5820] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5822] chmod("./syzkaller.fo1KDd", 0777 [pid 5821] <... chmod resumed>) = 0 [pid 5821] chdir("./syzkaller.iUgDk6"./strace-static-x86_64: Process 5824 attached [pid 5823] <... mkdir resumed>) = 0 [pid 5822] <... chmod resumed>) = 0 [pid 5824] set_robust_list(0x55557b5e3660, 24 [pid 5823] chmod("./syzkaller.zYaXie", 0777 [pid 5821] <... chdir resumed>) = 0 [pid 5820] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5824 [pid 5822] chdir("./syzkaller.fo1KDd" [pid 5820] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5824] <... set_robust_list resumed>) = 0 [pid 5823] <... chmod resumed>) = 0 [pid 5822] <... chdir resumed>) = 0 [pid 5821] mkdir("./0", 0777./strace-static-x86_64: Process 5825 attached [pid 5824] mkdir("./syzkaller.RxpwHf", 0700 [pid 5822] mkdir("./0", 0777 [pid 5820] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5825 [pid 5825] set_robust_list(0x55557b5e3660, 24 [pid 5823] chdir("./syzkaller.zYaXie" [pid 5822] <... mkdir resumed>) = 0 [pid 5821] <... mkdir resumed>) = 0 [pid 5823] <... chdir resumed>) = 0 [pid 5825] <... set_robust_list resumed>) = 0 [pid 5825] mkdir("./syzkaller.cx2F8p", 0700 [pid 5822] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5825] <... mkdir resumed>) = 0 [pid 5824] <... mkdir resumed>) = 0 [pid 5823] mkdir("./0", 0777 [pid 5821] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5825] chmod("./syzkaller.cx2F8p", 0777 [pid 5824] chmod("./syzkaller.RxpwHf", 0777 [pid 5822] <... openat resumed>) = 3 [pid 5825] <... chmod resumed>) = 0 [pid 5824] <... chmod resumed>) = 0 [pid 5823] <... mkdir resumed>) = 0 [pid 5822] ioctl(3, LOOP_CLR_FD [pid 5821] <... openat resumed>) = 3 [pid 5825] chdir("./syzkaller.cx2F8p" [pid 5824] chdir("./syzkaller.RxpwHf" [pid 5825] <... chdir resumed>) = 0 [pid 5824] <... chdir resumed>) = 0 [pid 5825] mkdir("./0", 0777 [pid 5823] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5822] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5821] ioctl(3, LOOP_CLR_FD [pid 5824] mkdir("./0", 0777 [pid 5821] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5825] <... mkdir resumed>) = 0 [pid 5823] <... openat resumed>) = 3 [pid 5821] close(3 [pid 5825] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5824] <... mkdir resumed>) = 0 [pid 5822] close(3 [pid 5825] <... openat resumed>) = 3 [pid 5824] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5823] ioctl(3, LOOP_CLR_FD [pid 5822] <... close resumed>) = 0 [pid 5821] <... close resumed>) = 0 [pid 5824] <... openat resumed>) = 3 [pid 5825] ioctl(3, LOOP_CLR_FD [pid 5823] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5822] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5821] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5825] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5823] close(3 [pid 5825] close(3 [pid 5824] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5826 attached [pid 5825] <... close resumed>) = 0 [pid 5824] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5826] set_robust_list(0x55557b5e3660, 24 [pid 5825] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5824] close(3 [pid 5823] <... close resumed>) = 0 ./strace-static-x86_64: Process 5827 attached [pid 5823] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5822] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5826 ./strace-static-x86_64: Process 5828 attached [pid 5827] set_robust_list(0x55557b5e3660, 24 [pid 5826] <... set_robust_list resumed>) = 0 [pid 5824] <... close resumed>) = 0 [pid 5821] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5827 [pid 5824] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5829 attached [pid 5827] <... set_robust_list resumed>) = 0 [pid 5826] chdir("./0"./strace-static-x86_64: Process 5830 attached [pid 5829] set_robust_list(0x55557b5e3660, 24 [pid 5828] set_robust_list(0x55557b5e3660, 24 [pid 5827] chdir("./0" [pid 5826] <... chdir resumed>) = 0 [pid 5823] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5829 [pid 5830] set_robust_list(0x55557b5e3660, 24 [pid 5829] <... set_robust_list resumed>) = 0 [pid 5828] <... set_robust_list resumed>) = 0 [pid 5827] <... chdir resumed>) = 0 [pid 5826] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5825] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5828 [pid 5830] <... set_robust_list resumed>) = 0 [pid 5829] chdir("./0" [pid 5828] chdir("./0" [pid 5827] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5826] <... prctl resumed>) = 0 [pid 5824] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5830 [pid 5830] chdir("./0" [pid 5829] <... chdir resumed>) = 0 [pid 5827] <... prctl resumed>) = 0 [pid 5828] <... chdir resumed>) = 0 [pid 5826] setpgid(0, 0 [pid 5828] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5826] <... setpgid resumed>) = 0 [pid 5828] <... prctl resumed>) = 0 [pid 5826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5828] setpgid(0, 0) = 0 [pid 5828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5826] <... openat resumed>) = 3 [pid 5828] write(3, "1000", 4 [pid 5830] <... chdir resumed>) = 0 [pid 5829] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5827] setpgid(0, 0 [pid 5826] write(3, "1000", 4 [pid 5830] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5829] <... prctl resumed>) = 0 [pid 5828] <... write resumed>) = 4 [pid 5827] <... setpgid resumed>) = 0 [pid 5826] <... write resumed>) = 4 [pid 5830] <... prctl resumed>) = 0 [pid 5829] setpgid(0, 0 [pid 5828] close(3 [pid 5827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5826] close(3 [pid 5830] setpgid(0, 0 [pid 5829] <... setpgid resumed>) = 0 [pid 5828] <... close resumed>) = 0 [pid 5826] <... close resumed>) = 0 [pid 5829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5828] symlink("/dev/binderfs", "./binderfs" [pid 5826] symlink("/dev/binderfs", "./binderfs" [pid 5828] <... symlink resumed>) = 0 [pid 5826] <... symlink resumed>) = 0 [pid 5830] <... setpgid resumed>) = 0 [pid 5827] <... openat resumed>) = 3 [pid 5829] <... openat resumed>) = 3 executing program [pid 5830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5826] write(1, "executing program\n", 18 [pid 5830] <... openat resumed>) = 3 [pid 5829] write(3, "1000", 4 [pid 5827] write(3, "1000", 4 [pid 5826] <... write resumed>) = 18 [pid 5830] write(3, "1000", 4 [pid 5829] <... write resumed>) = 4 [pid 5828] write(1, "executing program\n", 18 [pid 5827] <... write resumed>) = 4 executing program [pid 5829] close(3 [pid 5828] <... write resumed>) = 18 [pid 5827] close(3 [pid 5826] memfd_create("syzkaller", 0 [pid 5828] memfd_create("syzkaller", 0 [pid 5827] <... close resumed>) = 0 [pid 5830] <... write resumed>) = 4 [pid 5829] <... close resumed>) = 0 [pid 5830] close(3 [pid 5827] symlink("/dev/binderfs", "./binderfs" [pid 5829] symlink("/dev/binderfs", "./binderfs" [pid 5830] <... close resumed>) = 0 [pid 5828] <... memfd_create resumed>) = 3 [pid 5827] <... symlink resumed>) = 0 [pid 5826] <... memfd_create resumed>) = 3 [pid 5830] symlink("/dev/binderfs", "./binderfs" [pid 5829] <... symlink resumed>) = 0 [pid 5828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 executing program executing program [pid 5830] <... symlink resumed>) = 0 [pid 5829] write(1, "executing program\n", 18 [pid 5828] <... mmap resumed>) = 0x7f6a6d000000 [pid 5826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5830] write(1, "executing program\n", 18 [pid 5829] <... write resumed>) = 18 [pid 5827] write(1, "executing program\n", 18 [pid 5830] <... write resumed>) = 18 [pid 5829] memfd_create("syzkaller", 0 [pid 5826] <... mmap resumed>) = 0x7f6a6d000000 executing program [pid 5830] memfd_create("syzkaller", 0 [pid 5827] <... write resumed>) = 18 [pid 5830] <... memfd_create resumed>) = 3 [pid 5829] <... memfd_create resumed>) = 3 [pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5830] <... mmap resumed>) = 0x7f6a6d000000 [pid 5829] <... mmap resumed>) = 0x7f6a6d000000 [pid 5827] memfd_create("syzkaller", 0) = 3 [pid 5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6a6d000000 [pid 5826] write(3, "\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\x00\x00"..., 16777216 [pid 5828] write(3, "\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\x00\x00"..., 16777216 [pid 5829] write(3, "\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\x00\x00"..., 16777216 [pid 5827] write(3, "\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\x00\x00"..., 16777216 [pid 5830] write(3, "\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\x00\x00"..., 16777216 [pid 5826] <... write resumed>) = 16777216 [pid 5826] munmap(0x7f6a6d000000, 138412032) = 0 [pid 5828] <... write resumed>) = 16777216 [pid 5826] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5828] munmap(0x7f6a6d000000, 138412032 [pid 5826] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5828] <... munmap resumed>) = 0 [pid 5826] close(3 [pid 5829] <... write resumed>) = 16777216 [pid 5828] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5826] <... close resumed>) = 0 [pid 5828] <... openat resumed>) = 4 [pid 5826] close(4 [pid 5828] ioctl(4, LOOP_SET_FD, 3 [pid 5826] <... close resumed>) = 0 [pid 5826] mkdir("./file0", 0777 [pid 5829] munmap(0x7f6a6d000000, 138412032 [pid 5826] <... mkdir resumed>) = 0 [ 63.333891][ T5826] loop1: detected capacity change from 0 to 32768 [pid 5830] <... write resumed>) = 16777216 [pid 5829] <... munmap resumed>) = 0 [pid 5828] <... ioctl resumed>) = 0 [pid 5826] mount("/dev/loop1", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5830] munmap(0x7f6a6d000000, 138412032 [pid 5829] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5829] ioctl(4, LOOP_SET_FD, 3 [pid 5827] <... write resumed>) = 16777216 [pid 5827] munmap(0x7f6a6d000000, 138412032 [pid 5830] <... munmap resumed>) = 0 [pid 5830] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5829] <... ioctl resumed>) = 0 [pid 5828] close(3 [pid 5830] <... openat resumed>) = 4 [pid 5829] close(3 [pid 5828] <... close resumed>) = 0 [pid 5830] ioctl(4, LOOP_SET_FD, 3 [pid 5829] <... close resumed>) = 0 [pid 5828] close(4 [pid 5829] close(4 [pid 5828] <... close resumed>) = 0 [pid 5826] <... mount resumed>) = 0 [pid 5828] mkdir("./file0", 0777 [pid 5826] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5829] <... close resumed>) = 0 [pid 5828] <... mkdir resumed>) = 0 [pid 5826] chdir("./file0" [pid 5830] <... ioctl resumed>) = 0 [pid 5829] mkdir("./file0", 0777 [pid 5828] mount("/dev/loop4", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5826] <... chdir resumed>) = 0 [pid 5830] close(3 [pid 5829] <... mkdir resumed>) = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5830] <... close resumed>) = 0 [pid 5829] mount("/dev/loop2", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5826] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5826] exit_group(0) = ? [ 63.392277][ T5828] loop4: detected capacity change from 0 to 32768 [ 63.405795][ T5829] loop2: detected capacity change from 0 to 32768 [ 63.430752][ T5830] loop3: detected capacity change from 0 to 32768 [pid 5827] <... munmap resumed>) = 0 [pid 5830] close(4 [pid 5829] <... mount resumed>) = 0 [pid 5828] <... mount resumed>) = 0 [pid 5826] +++ exited with 0 +++ [pid 5828] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5822] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5826, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=23 /* 0.23 s */} --- [pid 5828] <... openat resumed>) = 3 [pid 5828] chdir("./file0" [pid 5830] <... close resumed>) = 0 [pid 5829] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5830] mkdir("./file0", 0777 [pid 5829] <... openat resumed>) = 3 [pid 5828] <... chdir resumed>) = 0 [pid 5827] <... openat resumed>) = 4 [pid 5830] <... mkdir resumed>) = 0 [pid 5829] chdir("./file0" [pid 5828] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5827] ioctl(4, LOOP_SET_FD, 3 [pid 5822] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5829] <... chdir resumed>) = 0 [pid 5822] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5829] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5822] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5829] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5828] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5822] <... openat resumed>) = 3 [pid 5830] mount("/dev/loop3", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5822] newfstatat(3, "", [pid 5828] exit_group(0 [pid 5822] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5829] exit_group(0 [pid 5828] <... exit_group resumed>) = ? [pid 5822] getdents64(3, [pid 5829] <... exit_group resumed>) = ? [pid 5822] <... getdents64 resumed>0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5828] +++ exited with 0 +++ [pid 5825] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5828, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=17 /* 0.17 s */} --- [pid 5822] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5822] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5825] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5822] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5829] +++ exited with 0 +++ [pid 5825] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5822] unlink("./0/binderfs" [pid 5825] <... openat resumed>) = 3 [pid 5823] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5829, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=20 /* 0.20 s */} --- [pid 5822] <... unlink resumed>) = 0 [pid 5825] newfstatat(3, "", [pid 5823] restart_syscall(<... resuming interrupted clone ...> [pid 5825] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5822] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5825] getdents64(3, [pid 5823] <... restart_syscall resumed>) = 0 [pid 5830] <... mount resumed>) = 0 [pid 5825] <... getdents64 resumed>0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5830] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5825] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] <... openat resumed>) = 3 [pid 5825] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5830] chdir("./file0" [pid 5827] <... ioctl resumed>) = 0 [pid 5825] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5823] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] <... chdir resumed>) = 0 [pid 5827] close(3 [pid 5825] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5823] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5830] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5827] <... close resumed>) = 0 [pid 5825] unlink("./0/binderfs" [pid 5823] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5830] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5827] close(4 [pid 5825] <... unlink resumed>) = 0 [pid 5823] <... openat resumed>) = 3 [pid 5822] <... umount2 resumed>) = 0 [pid 5830] exit_group(0 [pid 5825] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5823] newfstatat(3, "", [pid 5830] <... exit_group resumed>) = ? [pid 5827] <... close resumed>) = 0 [pid 5823] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5822] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] +++ exited with 0 +++ [pid 5827] mkdir("./file0", 0777 [pid 5823] getdents64(3, [pid 5825] <... umount2 resumed>) = 0 [pid 5824] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5830, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=21 /* 0.21 s */} --- [pid 5823] <... getdents64 resumed>0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5822] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5827] <... mkdir resumed>) = 0 [pid 5827] mount("/dev/loop0", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5824] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5823] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5822] newfstatat(AT_FDCWD, "./0/file0", [pid 5824] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5823] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5822] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5824] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5823] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5824] <... openat resumed>) = 3 [pid 5823] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5822] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5824] newfstatat(3, "", [pid 5823] unlink("./0/binderfs" [pid 5822] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5827] <... mount resumed>) = 0 [pid 5825] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5824] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5823] <... unlink resumed>) = 0 [pid 5822] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5827] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5825] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5824] getdents64(3, [pid 5823] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5822] <... openat resumed>) = 4 [pid 5827] <... openat resumed>) = 3 [pid 5825] newfstatat(AT_FDCWD, "./0/file0", [pid 5824] <... getdents64 resumed>0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5822] newfstatat(4, "", [pid 5827] chdir("./file0" [pid 5825] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5824] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5822] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 63.508277][ T5827] loop0: detected capacity change from 0 to 32768 [pid 5827] <... chdir resumed>) = 0 [pid 5825] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5824] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5822] getdents64(4, [pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5825] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5824] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5822] <... getdents64 resumed>0x55557b5ec730 /* 2 entries */, 32768) = 48 [pid 5827] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5824] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5827] exit_group(0 [pid 5825] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5824] unlink("./0/binderfs" [pid 5822] getdents64(4, [pid 5827] <... exit_group resumed>) = ? [pid 5825] <... openat resumed>) = 4 [pid 5824] <... unlink resumed>) = 0 [pid 5822] <... getdents64 resumed>0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5827] +++ exited with 0 +++ [pid 5825] newfstatat(4, "", [pid 5824] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5823] <... umount2 resumed>) = 0 [pid 5822] close(4 [pid 5825] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5821] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5827, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=26 /* 0.26 s */} --- [pid 5822] <... close resumed>) = 0 [pid 5822] rmdir("./0/file0" [pid 5825] getdents64(4, [pid 5822] <... rmdir resumed>) = 0 [pid 5821] restart_syscall(<... resuming interrupted clone ...> [pid 5825] <... getdents64 resumed>0x55557b5ec730 /* 2 entries */, 32768) = 48 [pid 5825] getdents64(4, 0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5825] close(4) = 0 [pid 5825] rmdir("./0/file0") = 0 [pid 5823] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5825] getdents64(3, [pid 5823] newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5825] <... getdents64 resumed>0x55557b5e46f0 /* 0 entries */, 32768) = 0 [pid 5825] close(3 [pid 5823] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5825] <... close resumed>) = 0 [pid 5823] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5822] getdents64(3, [pid 5825] rmdir("./0" [pid 5823] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5825] <... rmdir resumed>) = 0 [pid 5823] <... openat resumed>) = 4 [pid 5822] <... getdents64 resumed>0x55557b5e46f0 /* 0 entries */, 32768) = 0 [pid 5821] <... restart_syscall resumed>) = 0 [pid 5822] close(3 [pid 5823] newfstatat(4, "", [pid 5822] <... close resumed>) = 0 [pid 5823] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5822] rmdir("./0" [pid 5823] getdents64(4, [pid 5822] <... rmdir resumed>) = 0 [pid 5824] <... umount2 resumed>) = 0 [pid 5821] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5824] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5821] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5824] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5821] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5824] newfstatat(AT_FDCWD, "./0/file0", [pid 5825] mkdir("./1", 0777 [pid 5824] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5823] <... getdents64 resumed>0x55557b5ec730 /* 2 entries */, 32768) = 48 [pid 5822] mkdir("./1", 0777 [pid 5821] <... openat resumed>) = 3 [pid 5825] <... mkdir resumed>) = 0 [pid 5824] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5823] getdents64(4, [pid 5821] newfstatat(3, "", [pid 5825] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5824] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5823] <... getdents64 resumed>0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5822] <... mkdir resumed>) = 0 [pid 5824] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5821] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5825] <... openat resumed>) = 3 [pid 5824] <... openat resumed>) = 4 [pid 5823] close(4 [pid 5822] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5821] getdents64(3, [pid 5825] ioctl(3, LOOP_CLR_FD [pid 5824] newfstatat(4, "", [pid 5823] <... close resumed>) = 0 [pid 5822] <... openat resumed>) = 3 [pid 5825] <... ioctl resumed>) = 0 [pid 5824] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5823] rmdir("./0/file0" [pid 5821] <... getdents64 resumed>0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5825] close(3 [pid 5824] getdents64(4, [pid 5823] <... rmdir resumed>) = 0 [pid 5822] ioctl(3, LOOP_CLR_FD [pid 5821] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5824] <... getdents64 resumed>0x55557b5ec730 /* 2 entries */, 32768) = 48 [pid 5821] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5824] getdents64(4, [pid 5821] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5824] <... getdents64 resumed>0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5824] close(4 [pid 5821] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5824] <... close resumed>) = 0 [pid 5821] unlink("./0/binderfs" [pid 5824] rmdir("./0/file0" [pid 5821] <... unlink resumed>) = 0 [pid 5824] <... rmdir resumed>) = 0 [pid 5823] getdents64(3, [pid 5822] <... ioctl resumed>) = 0 [pid 5821] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5824] getdents64(3, 0x55557b5e46f0 /* 0 entries */, 32768) = 0 [pid 5823] <... getdents64 resumed>0x55557b5e46f0 /* 0 entries */, 32768) = 0 [pid 5822] close(3 [pid 5824] close(3 [pid 5823] close(3 [pid 5824] <... close resumed>) = 0 [pid 5823] <... close resumed>) = 0 [pid 5824] rmdir("./0" [pid 5823] rmdir("./0" [pid 5824] <... rmdir resumed>) = 0 [pid 5823] <... rmdir resumed>) = 0 [pid 5824] mkdir("./1", 0777 [pid 5823] mkdir("./1", 0777 [pid 5824] <... mkdir resumed>) = 0 [pid 5823] <... mkdir resumed>) = 0 [pid 5824] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5823] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5824] ioctl(3, LOOP_CLR_FD) = 0 [pid 5823] <... openat resumed>) = 3 [pid 5823] ioctl(3, LOOP_CLR_FD [pid 5824] close(3 [pid 5823] <... ioctl resumed>) = 0 [pid 5823] close(3 [pid 5821] <... umount2 resumed>) = 0 [pid 5821] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5821] newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5821] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5821] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5821] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5821] getdents64(4, 0x55557b5ec730 /* 2 entries */, 32768) = 48 [pid 5821] getdents64(4, 0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5821] close(4) = 0 [pid 5821] rmdir("./0/file0") = 0 [pid 5821] getdents64(3, 0x55557b5e46f0 /* 0 entries */, 32768) = 0 [pid 5821] close(3) = 0 [pid 5821] rmdir("./0") = 0 [pid 5821] mkdir("./1", 0777) = 0 [pid 5821] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5821] ioctl(3, LOOP_CLR_FD) = 0 [pid 5821] close(3 [pid 5822] <... close resumed>) = 0 [pid 5825] <... close resumed>) = 0 [pid 5823] <... close resumed>) = 0 [pid 5822] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557b5e3650) = 5835 [pid 5825] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557b5e3650) = 5836 ./strace-static-x86_64: Process 5836 attached [pid 5836] set_robust_list(0x55557b5e3660, 24 [pid 5823] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5835 attached [pid 5836] <... set_robust_list resumed>) = 0 [pid 5824] <... close resumed>) = 0 ./strace-static-x86_64: Process 5837 attached [pid 5836] chdir("./1" [pid 5835] set_robust_list(0x55557b5e3660, 24 [pid 5823] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5837 [pid 5837] set_robust_list(0x55557b5e3660, 24 [pid 5835] <... set_robust_list resumed>) = 0 [pid 5837] <... set_robust_list resumed>) = 0 [pid 5835] chdir("./1" [pid 5837] chdir("./1" [pid 5836] <... chdir resumed>) = 0 [pid 5835] <... chdir resumed>) = 0 [pid 5837] <... chdir resumed>) = 0 [pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5835] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5837] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5836] <... prctl resumed>) = 0 [pid 5835] <... prctl resumed>) = 0 [pid 5837] <... prctl resumed>) = 0 [pid 5836] setpgid(0, 0 [pid 5837] setpgid(0, 0 [pid 5836] <... setpgid resumed>) = 0 [pid 5835] setpgid(0, 0 [pid 5836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "1000", 4) = 4 [pid 5836] close(3) = 0 [pid 5836] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5836] write(1, "executing program\n", 18 [pid 5824] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5837] <... setpgid resumed>) = 0 [pid 5836] <... write resumed>) = 18 [pid 5835] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5838 attached [pid 5837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5836] memfd_create("syzkaller", 0 [pid 5835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] <... openat resumed>) = 3 [pid 5835] write(3, "1000", 4) = 4 [pid 5835] close(3) = 0 [pid 5835] symlink("/dev/binderfs", "./binderfs"executing program ) = 0 [pid 5835] write(1, "executing program\n", 18 [pid 5838] set_robust_list(0x55557b5e3660, 24 [pid 5835] <... write resumed>) = 18 [pid 5836] <... memfd_create resumed>) = 3 [pid 5835] memfd_create("syzkaller", 0 [pid 5838] <... set_robust_list resumed>) = 0 [pid 5837] write(3, "1000", 4 [pid 5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5835] <... memfd_create resumed>) = 3 [pid 5838] chdir("./1" [pid 5837] <... write resumed>) = 4 [pid 5836] <... mmap resumed>) = 0x7f6a6d000000 [pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5838] <... chdir resumed>) = 0 [pid 5837] close(3 [pid 5824] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5838 [pid 5837] <... close resumed>) = 0 [pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5837] symlink("/dev/binderfs", "./binderfs" [pid 5835] <... mmap resumed>) = 0x7f6a6d000000 [pid 5838] <... prctl resumed>) = 0 [pid 5838] setpgid(0, 0 [pid 5837] <... symlink resumed>) = 0 executing program [pid 5838] <... setpgid resumed>) = 0 [pid 5837] write(1, "executing program\n", 18) = 18 [pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5838] write(3, "1000", 4 [pid 5837] memfd_create("syzkaller", 0 [pid 5838] <... write resumed>) = 4 [pid 5838] close(3 [pid 5837] <... memfd_create resumed>) = 3 [pid 5838] <... close resumed>) = 0 [pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5838] symlink("/dev/binderfs", "./binderfs" [pid 5837] <... mmap resumed>) = 0x7f6a6d000000 [pid 5838] <... symlink resumed>) = 0 executing program [pid 5838] write(1, "executing program\n", 18) = 18 [pid 5838] memfd_create("syzkaller", 0 [pid 5821] <... close resumed>) = 0 [pid 5838] <... memfd_create resumed>) = 3 [pid 5821] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6a6d000000 ./strace-static-x86_64: Process 5839 attached [pid 5821] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5839 [pid 5839] set_robust_list(0x55557b5e3660, 24) = 0 [pid 5839] chdir("./1") = 0 [pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5839] setpgid(0, 0) = 0 [pid 5839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1000", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5839] write(1, "executing program\n", 18) = 18 [pid 5839] memfd_create("syzkaller", 0) = 3 [pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6a6d000000 [pid 5836] write(3, "\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\x00\x00"..., 16777216 [pid 5837] write(3, "\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\x00\x00"..., 16777216 [pid 5838] write(3, "\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\x00\x00"..., 16777216 [pid 5835] write(3, "\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\x00\x00"..., 16777216 [pid 5839] write(3, "\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\x00\x00"..., 16777216 [pid 5836] <... write resumed>) = 16777216 [pid 5836] munmap(0x7f6a6d000000, 138412032) = 0 [pid 5836] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5836] ioctl(4, LOOP_SET_FD, 3 [pid 5837] <... write resumed>) = 16777216 [pid 5836] <... ioctl resumed>) = 0 [pid 5836] close(3) = 0 [pid 5836] close(4) = 0 [pid 5836] mkdir("./file0", 0777) = 0 [pid 5837] munmap(0x7f6a6d000000, 138412032 [pid 5836] mount("/dev/loop4", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"...) = 0 [pid 5838] <... write resumed>) = 16777216 [pid 5836] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5836] chdir("./file0") = 0 [pid 5836] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5836] exit_group(0) = ? [pid 5836] +++ exited with 0 +++ [pid 5825] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5836, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=23 /* 0.23 s */} --- [pid 5825] restart_syscall(<... resuming interrupted clone ...> [pid 5838] munmap(0x7f6a6d000000, 138412032 [pid 5837] <... munmap resumed>) = 0 [ 64.609136][ T5836] loop4: detected capacity change from 0 to 32768 [pid 5835] <... write resumed>) = 16777216 [pid 5825] <... restart_syscall resumed>) = 0 [pid 5825] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5835] munmap(0x7f6a6d000000, 138412032 [pid 5837] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5825] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5837] <... openat resumed>) = 4 [pid 5825] <... openat resumed>) = 3 [pid 5837] ioctl(4, LOOP_SET_FD, 3 [pid 5825] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5825] getdents64(3, 0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5825] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5825] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5825] unlink("./1/binderfs") = 0 [pid 5825] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5837] <... ioctl resumed>) = 0 [pid 5837] close(3) = 0 [pid 5837] close(4) = 0 [pid 5837] mkdir("./file0", 0777) = 0 [pid 5837] mount("/dev/loop2", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5838] <... munmap resumed>) = 0 [pid 5837] <... mount resumed>) = 0 [pid 5835] <... munmap resumed>) = 0 [pid 5825] <... umount2 resumed>) = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5837] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5835] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5825] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5825] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 64.674985][ T5837] loop2: detected capacity change from 0 to 32768 [pid 5835] <... openat resumed>) = 4 [pid 5825] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5838] <... openat resumed>) = 4 [pid 5835] ioctl(4, LOOP_SET_FD, 3 [pid 5825] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5837] <... openat resumed>) = 3 [pid 5825] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5837] chdir("./file0") = 0 [pid 5837] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5838] ioctl(4, LOOP_SET_FD, 3 [pid 5837] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5825] <... openat resumed>) = 4 [pid 5838] <... ioctl resumed>) = 0 [pid 5837] exit_group(0 [pid 5825] newfstatat(4, "", [pid 5837] <... exit_group resumed>) = ? [pid 5825] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5825] getdents64(4, [pid 5837] +++ exited with 0 +++ [pid 5825] <... getdents64 resumed>0x55557b5ec730 /* 2 entries */, 32768) = 48 [pid 5825] getdents64(4, 0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5823] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5837, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=20 /* 0.20 s */} --- [pid 5835] <... ioctl resumed>) = 0 [pid 5825] close(4) = 0 [pid 5823] restart_syscall(<... resuming interrupted clone ...> [pid 5825] rmdir("./1/file0") = 0 [pid 5825] getdents64(3, 0x55557b5e46f0 /* 0 entries */, 32768) = 0 [pid 5825] close(3) = 0 [pid 5825] rmdir("./1") = 0 [pid 5825] mkdir("./2", 0777) = 0 [pid 5825] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5825] ioctl(3, LOOP_CLR_FD) = 0 [pid 5825] close(3 [pid 5835] close(3 [pid 5823] <... restart_syscall resumed>) = 0 [pid 5835] <... close resumed>) = 0 [pid 5835] close(4) = 0 [pid 5823] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5835] mkdir("./file0", 0777 [pid 5823] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5838] close(3 [pid 5835] <... mkdir resumed>) = 0 [pid 5838] <... close resumed>) = 0 [pid 5835] mount("/dev/loop1", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5823] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5838] close(4 [pid 5823] <... openat resumed>) = 3 [pid 5838] <... close resumed>) = 0 [pid 5823] newfstatat(3, "", [pid 5838] mkdir("./file0", 0777 [pid 5823] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5838] <... mkdir resumed>) = 0 [pid 5823] getdents64(3, [pid 5838] mount("/dev/loop3", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5823] <... getdents64 resumed>0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5835] <... mount resumed>) = 0 [pid 5823] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5835] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5823] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5835] <... openat resumed>) = 3 [pid 5823] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5835] chdir("./file0") = 0 [pid 5823] unlink("./1/binderfs" [pid 5835] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5823] <... unlink resumed>) = 0 [pid 5835] exit_group(0 [pid 5823] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5835] <... exit_group resumed>) = ? [ 64.715644][ T5835] loop1: detected capacity change from 0 to 32768 [ 64.732173][ T5838] loop3: detected capacity change from 0 to 32768 [pid 5835] +++ exited with 0 +++ [pid 5822] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5835, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=23 /* 0.23 s */} --- [pid 5822] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5822] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5822] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5822] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5822] getdents64(3, [pid 5823] <... umount2 resumed>) = 0 [pid 5822] <... getdents64 resumed>0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5822] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5822] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5822] unlink("./1/binderfs") = 0 [pid 5822] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5823] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5822] <... umount2 resumed>) = 0 [pid 5838] <... mount resumed>) = 0 [pid 5823] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5822] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5823] newfstatat(AT_FDCWD, "./1/file0", [pid 5822] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5838] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5822] newfstatat(AT_FDCWD, "./1/file0", [pid 5838] <... openat resumed>) = 3 [pid 5823] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5822] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5838] chdir("./file0" [pid 5822] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5838] <... chdir resumed>) = 0 [pid 5823] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5822] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5838] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5823] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5822] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5838] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5823] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5838] exit_group(0 [pid 5822] <... openat resumed>) = 4 [pid 5839] <... write resumed>) = 16777216 [pid 5838] <... exit_group resumed>) = ? [pid 5823] <... openat resumed>) = 4 [pid 5822] newfstatat(4, "", [pid 5839] munmap(0x7f6a6d000000, 138412032 [pid 5823] newfstatat(4, "", [pid 5822] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5838] +++ exited with 0 +++ [pid 5822] getdents64(4, [pid 5824] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5838, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=18 /* 0.18 s */} --- [pid 5823] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5824] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5824] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5824] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5824] getdents64(3, [pid 5823] getdents64(4, [pid 5822] <... getdents64 resumed>0x55557b5ec730 /* 2 entries */, 32768) = 48 [pid 5824] <... getdents64 resumed>0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5824] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5824] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5823] <... getdents64 resumed>0x55557b5ec730 /* 2 entries */, 32768) = 48 [pid 5822] getdents64(4, [pid 5824] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5823] getdents64(4, [pid 5822] <... getdents64 resumed>0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5824] unlink("./1/binderfs" [pid 5823] <... getdents64 resumed>0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5822] close(4 [pid 5824] <... unlink resumed>) = 0 [pid 5823] close(4 [pid 5824] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5823] <... close resumed>) = 0 [pid 5822] <... close resumed>) = 0 [pid 5823] rmdir("./1/file0" [pid 5822] rmdir("./1/file0" [pid 5823] <... rmdir resumed>) = 0 [pid 5822] <... rmdir resumed>) = 0 [pid 5823] getdents64(3, 0x55557b5e46f0 /* 0 entries */, 32768) = 0 [pid 5822] getdents64(3, [pid 5823] close(3 [pid 5822] <... getdents64 resumed>0x55557b5e46f0 /* 0 entries */, 32768) = 0 [pid 5823] <... close resumed>) = 0 [pid 5822] close(3 [pid 5823] rmdir("./1" [pid 5822] <... close resumed>) = 0 [pid 5823] <... rmdir resumed>) = 0 [pid 5822] rmdir("./1" [pid 5823] mkdir("./2", 0777 [pid 5822] <... rmdir resumed>) = 0 [pid 5823] <... mkdir resumed>) = 0 [pid 5822] mkdir("./2", 0777 [pid 5823] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5822] <... mkdir resumed>) = 0 [pid 5839] <... munmap resumed>) = 0 [pid 5823] <... openat resumed>) = 3 [pid 5822] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5823] ioctl(3, LOOP_CLR_FD [pid 5822] ioctl(3, LOOP_CLR_FD [pid 5824] <... umount2 resumed>) = 0 [pid 5824] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5823] <... ioctl resumed>) = 0 [pid 5822] <... ioctl resumed>) = 0 [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5824] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5823] close(3 [pid 5822] close(3 [pid 5839] <... openat resumed>) = 4 [pid 5824] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5824] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5824] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5824] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5824] getdents64(4, 0x55557b5ec730 /* 2 entries */, 32768) = 48 [pid 5824] getdents64(4, 0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5824] close(4) = 0 [pid 5824] rmdir("./1/file0") = 0 [pid 5824] getdents64(3, 0x55557b5e46f0 /* 0 entries */, 32768) = 0 [pid 5824] close(3) = 0 [pid 5824] rmdir("./1") = 0 [pid 5839] ioctl(4, LOOP_SET_FD, 3 [pid 5824] mkdir("./2", 0777) = 0 [pid 5824] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5824] ioctl(3, LOOP_CLR_FD) = 0 [pid 5824] close(3 [pid 5839] <... ioctl resumed>) = 0 [pid 5839] close(3) = 0 [ 64.860691][ T5839] loop0: detected capacity change from 0 to 32768 [pid 5839] close(4) = 0 [pid 5839] mkdir("./file0", 0777) = 0 [pid 5839] mount("/dev/loop0", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"...) = 0 [pid 5839] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5839] chdir("./file0") = 0 [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5839] exit_group(0) = ? [pid 5839] +++ exited with 0 +++ [pid 5821] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5839, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=26 /* 0.26 s */} --- [pid 5821] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5825] <... close resumed>) = 0 [pid 5821] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5821] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5821] getdents64(3, 0x55557b5e46f0 /* 4 entries */, 32768) = 112 [pid 5821] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5821] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5821] unlink("./1/binderfs" [pid 5825] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5821] <... unlink resumed>) = 0 [pid 5821] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5825] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5840 ./strace-static-x86_64: Process 5840 attached [pid 5840] set_robust_list(0x55557b5e3660, 24) = 0 [pid 5840] chdir("./2" [pid 5821] <... umount2 resumed>) = 0 [pid 5821] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5840] <... chdir resumed>) = 0 [pid 5821] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5840] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5821] newfstatat(AT_FDCWD, "./1/file0", [pid 5840] <... prctl resumed>) = 0 [pid 5840] setpgid(0, 0 [pid 5821] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5840] <... setpgid resumed>) = 0 [pid 5821] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5821] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5840] <... openat resumed>) = 3 [pid 5823] <... close resumed>) = 0 [pid 5840] write(3, "1000", 4 [pid 5821] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5840] <... write resumed>) = 4 [pid 5840] close(3) = 0 [pid 5840] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5840] write(1, "executing program\n", 18executing program ) = 18 [pid 5840] memfd_create("syzkaller", 0) = 3 [pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5821] <... openat resumed>) = 4 [pid 5840] <... mmap resumed>) = 0x7f6a6d000000 [pid 5823] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5841 attached [pid 5841] set_robust_list(0x55557b5e3660, 24) = 0 [pid 5823] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5841 [pid 5821] newfstatat(4, "", [pid 5841] chdir("./2") = 0 [pid 5841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5841] setpgid(0, 0) = 0 [pid 5841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5841] write(3, "1000", 4) = 4 [pid 5841] close(3 [pid 5821] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5841] <... close resumed>) = 0 [pid 5821] getdents64(4, [pid 5841] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5821] <... getdents64 resumed>0x55557b5ec730 /* 2 entries */, 32768) = 48 executing program [pid 5841] write(1, "executing program\n", 18) = 18 [pid 5841] memfd_create("syzkaller", 0) = 3 [pid 5821] getdents64(4, 0x55557b5ec730 /* 0 entries */, 32768) = 0 [pid 5821] close(4 [pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5821] <... close resumed>) = 0 [pid 5841] <... mmap resumed>) = 0x7f6a6d000000 [pid 5821] rmdir("./1/file0") = 0 [pid 5824] <... close resumed>) = 0 [pid 5822] <... close resumed>) = 0 [pid 5821] getdents64(3, [pid 5824] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5822] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5821] <... getdents64 resumed>0x55557b5e46f0 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 5842 attached [pid 5821] close(3./strace-static-x86_64: Process 5843 attached [pid 5842] set_robust_list(0x55557b5e3660, 24 [pid 5843] set_robust_list(0x55557b5e3660, 24 [pid 5842] <... set_robust_list resumed>) = 0 [pid 5824] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5843 [pid 5822] <... clone resumed>, child_tidptr=0x55557b5e3650) = 5842 [pid 5821] <... close resumed>) = 0 [pid 5843] <... set_robust_list resumed>) = 0 [pid 5842] chdir("./2" [pid 5821] rmdir("./1" [pid 5842] <... chdir resumed>) = 0 [pid 5842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5842] setpgid(0, 0