./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor75527194 <...> Warning: Permanently added '10.128.0.134' (ED25519) to the list of known hosts. execve("./syz-executor75527194", ["./syz-executor75527194"], 0x7ffc4ba9e820 /* 10 vars */) = 0 brk(NULL) = 0x555556c07000 brk(0x555556c07d00) = 0x555556c07d00 arch_prctl(ARCH_SET_FS, 0x555556c07380) = 0 set_tid_address(0x555556c07650) = 5055 set_robust_list(0x555556c07660, 24) = 0 rseq(0x555556c07ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor75527194", 4096) = 26 getrandom("\xff\x55\xab\xc9\xa2\x8c\x6c\x68", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556c07d00 brk(0x555556c28d00) = 0x555556c28d00 brk(0x555556c29000) = 0x555556c29000 mprotect(0x7f139580d000, 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 5056 attached [pid 5056] set_robust_list(0x555556c07660, 24 [pid 5055] <... clone resumed>, child_tidptr=0x555556c07650) = 5056 [pid 5056] <... set_robust_list resumed>) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] mkdir("./syzkaller.Gb4fvl", 0700./strace-static-x86_64: Process 5057 attached [pid 5055] <... clone resumed>, child_tidptr=0x555556c07650) = 5057 [pid 5056] <... mkdir resumed>) = 0 [pid 5057] set_robust_list(0x555556c07660, 24) = 0 [pid 5057] mkdir("./syzkaller.BU3Inc", 0700 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] chmod("./syzkaller.Gb4fvl", 0777) = 0 [pid 5057] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5058 attached [pid 5056] chdir("./syzkaller.Gb4fvl" [pid 5058] set_robust_list(0x555556c07660, 24 [pid 5057] chmod("./syzkaller.BU3Inc", 0777 [pid 5056] <... chdir resumed>) = 0 [pid 5058] <... set_robust_list resumed>) = 0 [pid 5057] <... chmod resumed>) = 0 [pid 5056] mkdir("./0", 0777 [pid 5055] <... clone resumed>, child_tidptr=0x555556c07650) = 5058 [pid 5057] chdir("./syzkaller.BU3Inc" [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] mkdir("./syzkaller.Go7JxG", 0700 [pid 5057] <... chdir resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5059 attached [pid 5058] <... mkdir resumed>) = 0 [pid 5057] mkdir("./0", 0777 [pid 5055] <... clone resumed>, child_tidptr=0x555556c07650) = 5059 [pid 5059] set_robust_list(0x555556c07660, 24 [pid 5058] chmod("./syzkaller.Go7JxG", 0777 [pid 5056] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... chmod resumed>) = 0 ./strace-static-x86_64: Process 5060 attached [pid 5059] <... set_robust_list resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] close(3 [pid 5055] <... clone resumed>, child_tidptr=0x555556c07650) = 5060 [pid 5060] set_robust_list(0x555556c07660, 24 [pid 5059] mkdir("./syzkaller.6jrz8l", 0700 [pid 5058] chdir("./syzkaller.Go7JxG" [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... chdir resumed>) = 0 [pid 5060] <... set_robust_list resumed>) = 0 [pid 5058] mkdir("./0", 0777 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... close resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5061 attached [pid 5055] <... clone resumed>, child_tidptr=0x555556c07650) = 5061 [pid 5060] mkdir("./syzkaller.fsjdDB", 0700 [pid 5059] chmod("./syzkaller.6jrz8l", 0777 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] set_robust_list(0x555556c07660, 24) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5059] <... chmod resumed>) = 0 [pid 5057] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] chdir("./syzkaller.6jrz8l" [pid 5061] mkdir("./syzkaller.FDv3mr", 0700 [pid 5059] <... chdir resumed>) = 0 [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... mkdir resumed>) = 0 [pid 5059] mkdir("./0", 0777 [pid 5058] <... openat resumed>) = 3 [pid 5060] chmod("./syzkaller.fsjdDB", 0777) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5063 ./strace-static-x86_64: Process 5063 attached [pid 5063] set_robust_list(0x555556c07660, 24 [pid 5061] chmod("./syzkaller.FDv3mr", 0777 [pid 5060] chdir("./syzkaller.fsjdDB" [pid 5063] <... set_robust_list resumed>) = 0 [pid 5061] <... chmod resumed>) = 0 [pid 5060] <... chdir resumed>) = 0 [pid 5063] chdir("./0" [pid 5060] mkdir("./0", 0777 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5064 attached [pid 5063] <... chdir resumed>) = 0 [pid 5061] chdir("./syzkaller.FDv3mr" [pid 5060] <... mkdir resumed>) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5064 [pid 5063] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... chdir resumed>) = 0 [pid 5058] close(3 [pid 5064] set_robust_list(0x555556c07660, 24 [pid 5063] <... prctl resumed>) = 0 [pid 5063] setpgid(0, 0 [pid 5061] mkdir("./0", 0777 [pid 5064] <... set_robust_list resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5064] chdir("./0" [pid 5063] <... setpgid resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5063] write(3, "1000", 4) = 4 [pid 5063] close(3) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5063] symlink("/dev/binderfs", "./binderfs" [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5064] <... chdir resumed>) = 0 [pid 5063] <... symlink resumed>) = 0 [pid 5061] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5060] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5064] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5065 attached [pid 5059] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5065 [pid 5064] <... prctl resumed>) = 0 [pid 5065] set_robust_list(0x555556c07660, 24 [pid 5064] setpgid(0, 0) = 0 [pid 5065] <... set_robust_list resumed>) = 0 [pid 5065] chdir("./0" [pid 5064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] close(3 [pid 5065] <... chdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5064] <... openat resumed>) = 3 [pid 5065] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] close(3 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... close resumed>) = 0 [pid 5065] <... prctl resumed>) = 0 [pid 5064] write(3, "1000", 4 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] close(3 [pid 5065] setpgid(0, 0 [pid 5064] <... write resumed>) = 4 [pid 5059] <... close resumed>) = 0 [pid 5065] <... setpgid resumed>) = 0 [pid 5065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5064] close(3 [pid 5065] <... openat resumed>) = 3 [pid 5064] <... close resumed>) = 0 [pid 5065] write(3, "1000", 4./strace-static-x86_64: Process 5068 attached ) = 4 [pid 5064] symlink("/dev/binderfs", "./binderfs" [pid 5063] memfd_create("syzkaller", 0./strace-static-x86_64: Process 5066 attached [pid 5068] set_robust_list(0x555556c07660, 24 [pid 5065] close(3 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5067 ./strace-static-x86_64: Process 5067 attached [pid 5066] set_robust_list(0x555556c07660, 24 [pid 5068] <... set_robust_list resumed>) = 0 [pid 5065] <... close resumed>) = 0 [pid 5064] <... symlink resumed>) = 0 [pid 5063] <... memfd_create resumed>) = 3 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5066 [pid 5066] <... set_robust_list resumed>) = 0 [pid 5068] chdir("./0" [pid 5065] symlink("/dev/binderfs", "./binderfs" [pid 5063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5066] chdir("./0" [pid 5067] set_robust_list(0x555556c07660, 24 [pid 5065] <... symlink resumed>) = 0 [pid 5063] <... mmap resumed>) = 0x7f138d200000 [pid 5066] <... chdir resumed>) = 0 [pid 5068] <... chdir resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5068 [pid 5066] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5067] <... set_robust_list resumed>) = 0 [pid 5065] memfd_create("syzkaller", 0 [pid 5064] memfd_create("syzkaller", 0 [pid 5063] 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"..., 524288 [pid 5066] <... prctl resumed>) = 0 [pid 5068] <... prctl resumed>) = 0 [pid 5065] <... memfd_create resumed>) = 3 [pid 5065] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5067] chdir("./0" [pid 5065] <... mmap resumed>) = 0x7f138d200000 [pid 5067] <... chdir resumed>) = 0 [pid 5064] <... memfd_create resumed>) = 3 [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5067] <... prctl resumed>) = 0 [pid 5066] setpgid(0, 0 [pid 5068] setpgid(0, 0 [pid 5067] setpgid(0, 0 [pid 5065] 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"..., 524288 [pid 5064] <... mmap resumed>) = 0x7f138d200000 [pid 5066] <... setpgid resumed>) = 0 [pid 5068] <... setpgid resumed>) = 0 [pid 5067] <... setpgid resumed>) = 0 [pid 5068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5068] <... openat resumed>) = 3 [pid 5067] <... openat resumed>) = 3 [pid 5068] write(3, "1000", 4 [pid 5067] write(3, "1000", 4 [pid 5068] <... write resumed>) = 4 [pid 5067] <... write resumed>) = 4 [pid 5064] 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"..., 524288 [pid 5066] <... openat resumed>) = 3 [pid 5068] close(3 [pid 5067] close(3 [pid 5066] write(3, "1000", 4 [pid 5068] <... close resumed>) = 0 [pid 5066] <... write resumed>) = 4 [pid 5068] symlink("/dev/binderfs", "./binderfs" [pid 5066] close(3 [pid 5068] <... symlink resumed>) = 0 [pid 5066] <... close resumed>) = 0 [pid 5065] <... write resumed>) = 524288 [pid 5066] symlink("/dev/binderfs", "./binderfs" [pid 5068] memfd_create("syzkaller", 0 [pid 5067] <... close resumed>) = 0 [pid 5066] <... symlink resumed>) = 0 [pid 5068] <... memfd_create resumed>) = 3 [pid 5067] symlink("/dev/binderfs", "./binderfs" [pid 5063] <... write resumed>) = 524288 [pid 5068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5067] <... symlink resumed>) = 0 [pid 5068] 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"..., 524288 [pid 5063] munmap(0x7f138d200000, 138412032) = 0 [pid 5067] memfd_create("syzkaller", 0 [pid 5066] memfd_create("syzkaller", 0 [pid 5065] munmap(0x7f138d200000, 138412032 [pid 5063] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5067] <... memfd_create resumed>) = 3 [pid 5066] <... memfd_create resumed>) = 3 [pid 5067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5065] <... munmap resumed>) = 0 [pid 5063] <... openat resumed>) = 4 [pid 5066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5067] <... mmap resumed>) = 0x7f138d200000 [pid 5063] ioctl(4, LOOP_SET_FD, 3 [pid 5066] <... mmap resumed>) = 0x7f138d200000 [pid 5065] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5067] 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"..., 524288 [pid 5065] <... openat resumed>) = 4 [pid 5064] <... write resumed>) = 524288 [pid 5064] munmap(0x7f138d200000, 138412032 [pid 5065] ioctl(4, LOOP_SET_FD, 3 [pid 5066] 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"..., 524288 [pid 5064] <... munmap resumed>) = 0 [pid 5068] <... write resumed>) = 524288 [pid 5067] <... write resumed>) = 524288 [pid 5064] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5066] <... write resumed>) = 524288 [pid 5067] munmap(0x7f138d200000, 138412032 [pid 5064] <... openat resumed>) = 4 [pid 5068] munmap(0x7f138d200000, 138412032) = 0 [pid 5068] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5068] ioctl(4, LOOP_SET_FD, 3 [pid 5064] ioctl(4, LOOP_SET_FD, 3 [pid 5067] <... munmap resumed>) = 0 [pid 5066] munmap(0x7f138d200000, 138412032) = 0 [pid 5066] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5063] <... ioctl resumed>) = 0 [pid 5063] close(3) = 0 [pid 5063] close(4 [pid 5066] ioctl(4, LOOP_SET_FD, 3 [pid 5063] <... close resumed>) = 0 [pid 5066] <... ioctl resumed>) = 0 [pid 5063] mkdir("./bus", 0777 [pid 5065] <... ioctl resumed>) = 0 [pid 5065] close(3 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5065] <... close resumed>) = 0 [pid 5063] <... mkdir resumed>) = 0 [pid 5067] <... openat resumed>) = 4 [pid 5065] close(4 [pid 5068] <... ioctl resumed>) = 0 [pid 5065] <... close resumed>) = 0 syzkaller login: [ 56.312028][ T5063] loop0: detected capacity change from 0 to 1024 [ 56.319333][ T5065] loop2: detected capacity change from 0 to 1024 [ 56.334761][ T5068] loop3: detected capacity change from 0 to 1024 [ 56.335426][ T5064] loop1: detected capacity change from 0 to 1024 [ 56.347916][ T5066] loop5: detected capacity change from 0 to 1024 [pid 5065] mkdir("./bus", 0777 [pid 5067] ioctl(4, LOOP_SET_FD, 3 [pid 5065] <... mkdir resumed>) = 0 [pid 5065] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5068] close(3 [pid 5063] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5068] <... close resumed>) = 0 [pid 5068] close(4) = 0 [pid 5068] mkdir("./bus", 0777) = 0 [pid 5068] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5067] <... ioctl resumed>) = 0 [pid 5064] <... ioctl resumed>) = 0 [pid 5067] close(3 [pid 5064] close(3) = 0 [pid 5067] <... close resumed>) = 0 [pid 5067] close(4 [pid 5064] close(4 [pid 5067] <... close resumed>) = 0 [pid 5064] <... close resumed>) = 0 [pid 5068] <... mount resumed>) = 0 [pid 5067] mkdir("./bus", 0777 [pid 5065] <... mount resumed>) = 0 [pid 5064] mkdir("./bus", 0777 [pid 5063] <... mount resumed>) = 0 [pid 5066] close(3 [pid 5068] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5065] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5063] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5066] <... close resumed>) = 0 [pid 5068] <... openat resumed>) = 3 [pid 5065] <... openat resumed>) = 3 [pid 5064] <... mkdir resumed>) = 0 [pid 5063] <... openat resumed>) = 3 [pid 5066] close(4 [pid 5068] chdir("./bus" [pid 5065] chdir("./bus" [pid 5063] chdir("./bus" [pid 5066] <... close resumed>) = 0 [pid 5068] <... chdir resumed>) = 0 [pid 5067] <... mkdir resumed>) = 0 [pid 5065] <... chdir resumed>) = 0 [pid 5064] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5063] <... chdir resumed>) = 0 [ 56.360980][ T5067] loop4: detected capacity change from 0 to 1024 [pid 5066] mkdir("./bus", 0777 [pid 5068] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5065] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5063] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5066] <... mkdir resumed>) = 0 [pid 5068] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5067] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5065] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5063] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5068] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5063] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5065] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5066] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5065] <... symlink resumed>) = 0 [pid 5068] <... symlink resumed>) = 0 [pid 5063] <... symlink resumed>) = 0 [pid 5068] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5065] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5063] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5068] <... creat resumed>) = 4 [pid 5067] <... mount resumed>) = 0 [pid 5064] <... mount resumed>) = 0 [pid 5067] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5065] <... creat resumed>) = 4 [pid 5064] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5068] rename("./bus", "./file2" [pid 5065] rename("./bus", "./file2" [pid 5067] <... openat resumed>) = 3 [pid 5067] chdir("./bus" [pid 5064] <... openat resumed>) = 3 [pid 5067] <... chdir resumed>) = 0 [pid 5064] chdir("./bus" [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5064] <... chdir resumed>) = 0 [pid 5067] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5066] <... mount resumed>) = 0 [pid 5066] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5068] <... rename resumed>) = -1 EEXIST (File exists) [pid 5065] <... rename resumed>) = -1 EEXIST (File exists) [pid 5063] <... creat resumed>) = 4 [pid 5064] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5066] <... openat resumed>) = 3 [pid 5068] memfd_create("syzkaller", 0 [pid 5065] memfd_create("syzkaller", 0 [pid 5064] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5063] rename("./bus", "./file2" [pid 5066] chdir("./bus" [pid 5067] <... symlink resumed>) = 0 [pid 5065] <... memfd_create resumed>) = 5 [pid 5066] <... chdir resumed>) = 0 [pid 5068] <... memfd_create resumed>) = 5 [pid 5067] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5065] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5064] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5063] <... rename resumed>) = -1 EEXIST (File exists) [pid 5066] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5065] <... mmap resumed>) = 0x7f138d200000 [pid 5068] <... mmap resumed>) = 0x7f138d200000 [pid 5063] memfd_create("syzkaller", 0 [pid 5066] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5064] <... symlink resumed>) = 0 [pid 5063] <... memfd_create resumed>) = 5 [pid 5067] <... creat resumed>) = 4 [pid 5063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5067] rename("./bus", "./file2" [pid 5064] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5063] <... mmap resumed>) = 0x7f138d200000 [pid 5066] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5068] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5065] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5063] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5067] <... rename resumed>) = -1 EEXIST (File exists) [pid 5067] memfd_create("syzkaller", 0) = 5 [pid 5067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5067] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5066] <... symlink resumed>) = 0 [pid 5064] <... creat resumed>) = 4 [pid 5064] rename("./bus", "./file2" [pid 5066] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5068] <... write resumed>) = 524288 [pid 5065] <... write resumed>) = 524288 [pid 5064] <... rename resumed>) = -1 EEXIST (File exists) [pid 5068] munmap(0x7f138d200000, 138412032 [pid 5065] munmap(0x7f138d200000, 138412032 [pid 5064] memfd_create("syzkaller", 0 [pid 5063] <... write resumed>) = 524288 [pid 5066] <... creat resumed>) = 4 [pid 5068] <... munmap resumed>) = 0 [pid 5065] <... munmap resumed>) = 0 [pid 5064] <... memfd_create resumed>) = 5 [pid 5066] rename("./bus", "./file2" [pid 5068] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5067] <... write resumed>) = 524288 [pid 5065] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5068] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5065] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5066] <... rename resumed>) = -1 EEXIST (File exists) [pid 5068] close(5 [pid 5065] close(5 [pid 5064] <... mmap resumed>) = 0x7f138d200000 [pid 5064] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5066] memfd_create("syzkaller", 0 [pid 5065] <... close resumed>) = 0 [pid 5063] munmap(0x7f138d200000, 138412032 [pid 5068] <... close resumed>) = 0 [pid 5063] <... munmap resumed>) = 0 [pid 5066] <... memfd_create resumed>) = 5 [pid 5068] creat("./file1", 000 [pid 5066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5063] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5066] <... mmap resumed>) = 0x7f138d200000 [pid 5067] munmap(0x7f138d200000, 138412032) = 0 [pid 5063] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5067] close(5) = 0 [pid 5066] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5065] creat("./file1", 000 [pid 5064] <... write resumed>) = 524288 [pid 5063] close(5 [pid 5064] munmap(0x7f138d200000, 138412032 [pid 5067] creat("./file1", 000 [pid 5064] <... munmap resumed>) = 0 [pid 5067] <... creat resumed>) = 5 [pid 5064] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5064] close(5 [pid 5063] <... close resumed>) = 0 [pid 5066] <... write resumed>) = 524288 [pid 5068] <... creat resumed>) = 5 [pid 5067] exit_group(0 [pid 5065] <... creat resumed>) = 5 [pid 5064] <... close resumed>) = 0 [pid 5063] creat("./file1", 000 [pid 5068] exit_group(0 [pid 5067] <... exit_group resumed>) = ? [pid 5068] <... exit_group resumed>) = ? [pid 5065] exit_group(0 [pid 5068] +++ exited with 0 +++ [pid 5067] +++ exited with 0 +++ [pid 5065] <... exit_group resumed>) = ? [pid 5066] munmap(0x7f138d200000, 138412032 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5067, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5068, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5059] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5064] creat("./file1", 000 [pid 5059] <... openat resumed>) = 3 [pid 5064] <... creat resumed>) = 5 [pid 5064] exit_group(0 [pid 5059] newfstatat(3, "", [pid 5064] <... exit_group resumed>) = ? [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5066] <... munmap resumed>) = 0 [pid 5065] +++ exited with 0 +++ [pid 5064] +++ exited with 0 +++ [pid 5063] <... creat resumed>) = 5 [pid 5060] <... openat resumed>) = 3 [pid 5066] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5063] exit_group(0 [pid 5060] newfstatat(3, "", [pid 5059] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5065, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5063] <... exit_group resumed>) = ? [pid 5066] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5064, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5063] +++ exited with 0 +++ [pid 5058] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... restart_syscall resumed>) = 0 [pid 5060] getdents64(3, [pid 5066] close(5 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5066] <... close resumed>) = 0 [pid 5060] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5057] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5063, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5058] newfstatat(3, "", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5066] creat("./file1", 000 [pid 5058] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5066] <... creat resumed>) = 5 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... openat resumed>) = 3 [pid 5056] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5066] exit_group(0 [pid 5058] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(3, "", [pid 5056] <... openat resumed>) = 3 [pid 5066] <... exit_group resumed>) = ? [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(3, "", [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5066] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5066, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, [pid 5061] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... umount2 resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5061] getdents64(3, [pid 5058] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... umount2 resumed>) = 0 [pid 5059] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = 0 [pid 5061] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./0/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] newfstatat(AT_FDCWD, "./0/bus", [pid 5058] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] newfstatat(AT_FDCWD, "./0/bus", [pid 5058] newfstatat(4, "", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(4, [pid 5057] <... openat resumed>) = 4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] newfstatat(4, "", [pid 5059] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] getdents64(4, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] newfstatat(AT_FDCWD, "./0/bus", [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] getdents64(4, [pid 5059] <... openat resumed>) = 4 [pid 5058] close(4 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] newfstatat(4, "", [pid 5058] <... close resumed>) = 0 [pid 5057] getdents64(4, [pid 5056] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] rmdir("./0/bus" [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(4, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./0/bus", [pid 5061] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] close(4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5056] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(4, "", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] getdents64(4, [pid 5056] <... openat resumed>) = 4 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, [pid 5056] newfstatat(4, "", [pid 5061] newfstatat(AT_FDCWD, "./0/bus", [pid 5060] getdents64(4, [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(4, [pid 5061] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] close(4 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... close resumed>) = 0 [pid 5056] getdents64(4, [pid 5061] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] rmdir("./0/bus" [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] close(4 [pid 5057] rmdir("./0/bus" [pid 5056] close(4 [pid 5061] newfstatat(4, "", [pid 5060] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] rmdir("./0/bus" [pid 5061] getdents64(4, [pid 5060] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5059] rmdir("./0/bus" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] close(4 [pid 5056] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5061] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./0/binderfs" [pid 5061] rmdir("./0/bus" [pid 5056] <... unlink resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] unlink("./0/binderfs") = 0 [pid 5061] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(3, [pid 5061] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] close(3 [pid 5056] getdents64(3, [pid 5061] unlink("./0/binderfs" [pid 5060] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5060] rmdir("./0" [pid 5056] close(3 [pid 5061] getdents64(3, [pid 5060] <... rmdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] rmdir("./0" [pid 5061] close(3) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5061] rmdir("./0") = 0 [pid 5060] mkdir("./1", 0777 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5057] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] mkdir("./1", 0777 [pid 5061] mkdir("./1", 0777 [pid 5059] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... mkdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] unlink("./0/binderfs" [pid 5057] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5060] <... mkdir resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] getdents64(3, [pid 5057] unlink("./0/binderfs" [pid 5059] unlink("./0/binderfs" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5058] close(3 [pid 5057] getdents64(3, [pid 5056] <... mkdir resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] getdents64(3, [pid 5058] <... close resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] rmdir("./0" [pid 5057] close(3 [pid 5061] <... openat resumed>) = 3 [pid 5060] <... openat resumed>) = 3 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] mkdir("./1", 0777 [pid 5057] rmdir("./0" [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] close(3 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... close resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5059] rmdir("./0" [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] mkdir("./1", 0777 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5059] mkdir("./1", 0777 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... mkdir resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5059] <... mkdir resumed>) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5059] close(3 [pid 5058] close(3 [pid 5056] close(3 [pid 5059] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] close(3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... close resumed>) = 0 [pid 5061] close(3 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5074 ./strace-static-x86_64: Process 5074 attached [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5076 [pid 5074] set_robust_list(0x555556c07660, 24 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5075 [pid 5074] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5075 attached [pid 5074] chdir("./1" [pid 5075] set_robust_list(0x555556c07660, 24) = 0 [pid 5074] <... chdir resumed>) = 0 [pid 5075] chdir("./1" [pid 5074] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... close resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5077 [pid 5075] <... chdir resumed>) = 0 [pid 5074] <... prctl resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5078 ./strace-static-x86_64: Process 5078 attached [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] setpgid(0, 0 [pid 5078] set_robust_list(0x555556c07660, 24 [pid 5075] <... prctl resumed>) = 0 [pid 5074] <... setpgid resumed>) = 0 [pid 5078] <... set_robust_list resumed>) = 0 [pid 5075] setpgid(0, 0 [pid 5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5077 attached [pid 5078] chdir("./1" [pid 5075] <... setpgid resumed>) = 0 [pid 5074] <... openat resumed>) = 3 [pid 5078] <... chdir resumed>) = 0 [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5077] set_robust_list(0x555556c07660, 24 [pid 5074] write(3, "1000", 4./strace-static-x86_64: Process 5079 attached ./strace-static-x86_64: Process 5076 attached [pid 5078] <... prctl resumed>) = 0 [pid 5077] <... set_robust_list resumed>) = 0 [pid 5075] <... openat resumed>) = 3 [pid 5074] <... write resumed>) = 4 [pid 5079] set_robust_list(0x555556c07660, 24 [pid 5077] chdir("./1" [pid 5076] set_robust_list(0x555556c07660, 24 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5079 [pid 5077] <... chdir resumed>) = 0 [pid 5077] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5076] <... set_robust_list resumed>) = 0 [pid 5079] <... set_robust_list resumed>) = 0 [pid 5078] setpgid(0, 0) = 0 [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] chdir("./1" [pid 5077] <... prctl resumed>) = 0 [pid 5079] <... chdir resumed>) = 0 [pid 5078] <... openat resumed>) = 3 [pid 5077] setpgid(0, 0 [pid 5076] chdir("./1" [pid 5074] close(3 [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5077] <... setpgid resumed>) = 0 [pid 5079] <... prctl resumed>) = 0 [pid 5078] write(3, "1000", 4 [pid 5075] write(3, "1000", 4 [pid 5074] <... close resumed>) = 0 [pid 5079] setpgid(0, 0 [pid 5077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] <... setpgid resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] <... write resumed>) = 4 [pid 5077] <... openat resumed>) = 3 [pid 5076] <... chdir resumed>) = 0 [pid 5075] <... write resumed>) = 4 [pid 5074] symlink("/dev/binderfs", "./binderfs" [pid 5079] <... openat resumed>) = 3 [pid 5078] close(3 [pid 5077] write(3, "1000", 4 [pid 5076] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5075] close(3 [pid 5074] <... symlink resumed>) = 0 [pid 5079] write(3, "1000", 4 [pid 5078] <... close resumed>) = 0 [pid 5077] <... write resumed>) = 4 [pid 5076] <... prctl resumed>) = 0 [pid 5075] <... close resumed>) = 0 [pid 5074] memfd_create("syzkaller", 0 [pid 5079] <... write resumed>) = 4 [pid 5078] symlink("/dev/binderfs", "./binderfs" [pid 5077] close(3 [pid 5076] setpgid(0, 0 [pid 5075] symlink("/dev/binderfs", "./binderfs" [pid 5074] <... memfd_create resumed>) = 3 [pid 5079] close(3 [pid 5078] <... symlink resumed>) = 0 [pid 5075] <... symlink resumed>) = 0 [pid 5077] <... close resumed>) = 0 [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5079] <... close resumed>) = 0 [pid 5078] memfd_create("syzkaller", 0 [pid 5077] symlink("/dev/binderfs", "./binderfs" [pid 5076] <... setpgid resumed>) = 0 [pid 5075] memfd_create("syzkaller", 0 [pid 5074] <... mmap resumed>) = 0x7f138d200000 [pid 5079] symlink("/dev/binderfs", "./binderfs" [pid 5078] <... memfd_create resumed>) = 3 [pid 5076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] <... symlink resumed>) = 0 [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5079] memfd_create("syzkaller", 0 [pid 5077] <... symlink resumed>) = 0 [pid 5076] <... openat resumed>) = 3 [pid 5075] <... memfd_create resumed>) = 3 [pid 5079] <... memfd_create resumed>) = 3 [pid 5077] memfd_create("syzkaller", 0 [pid 5076] write(3, "1000", 4 [pid 5074] 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"..., 524288 [pid 5079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5078] 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"..., 524288 [pid 5077] <... memfd_create resumed>) = 3 [pid 5076] <... write resumed>) = 4 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5079] <... mmap resumed>) = 0x7f138d200000 [pid 5078] <... write resumed>) = 524288 [pid 5077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5076] close(3 [pid 5075] <... mmap resumed>) = 0x7f138d200000 [pid 5079] 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"..., 524288 [pid 5077] <... mmap resumed>) = 0x7f138d200000 [pid 5076] <... close resumed>) = 0 [pid 5074] <... write resumed>) = 524288 [pid 5076] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5074] munmap(0x7f138d200000, 138412032 [pid 5075] 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"..., 524288 [pid 5074] <... munmap resumed>) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5077] 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"..., 524288 [pid 5074] ioctl(4, LOOP_SET_FD, 3 [pid 5078] munmap(0x7f138d200000, 138412032 [pid 5076] memfd_create("syzkaller", 0 [pid 5078] <... munmap resumed>) = 0 [pid 5076] <... memfd_create resumed>) = 3 [pid 5076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5079] <... write resumed>) = 524288 [pid 5078] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5076] <... mmap resumed>) = 0x7f138d200000 [pid 5078] <... openat resumed>) = 4 [pid 5078] ioctl(4, LOOP_SET_FD, 3 [pid 5079] munmap(0x7f138d200000, 138412032) = 0 [pid 5078] <... ioctl resumed>) = 0 [pid 5076] 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"..., 524288 [pid 5075] <... write resumed>) = 524288 [pid 5074] <... ioctl resumed>) = 0 [pid 5078] close(3 [pid 5076] <... write resumed>) = 524288 [pid 5075] munmap(0x7f138d200000, 138412032 [pid 5079] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5078] <... close resumed>) = 0 [pid 5075] <... munmap resumed>) = 0 [pid 5074] close(3 [pid 5078] close(4) = 0 [pid 5074] <... close resumed>) = 0 [ 56.944619][ T5074] loop2: detected capacity change from 0 to 1024 [ 56.966562][ T5078] loop4: detected capacity change from 0 to 1024 [pid 5078] mkdir("./bus", 0777 [pid 5074] close(4 [pid 5079] <... openat resumed>) = 4 [pid 5075] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5079] ioctl(4, LOOP_SET_FD, 3 [pid 5078] <... mkdir resumed>) = 0 [pid 5077] <... write resumed>) = 524288 [pid 5076] munmap(0x7f138d200000, 138412032 [pid 5075] <... openat resumed>) = 4 [pid 5074] <... close resumed>) = 0 [pid 5077] munmap(0x7f138d200000, 138412032 [pid 5074] mkdir("./bus", 0777) = 0 [pid 5074] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5077] <... munmap resumed>) = 0 [pid 5074] <... mount resumed>) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5076] <... munmap resumed>) = 0 [pid 5075] ioctl(4, LOOP_SET_FD, 3 [pid 5074] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5078] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5077] <... openat resumed>) = 4 [pid 5076] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5074] <... openat resumed>) = 3 [pid 5077] ioctl(4, LOOP_SET_FD, 3 [pid 5076] <... openat resumed>) = 4 [pid 5076] ioctl(4, LOOP_SET_FD, 3 [pid 5079] <... ioctl resumed>) = 0 [pid 5079] close(3) = 0 [pid 5079] close(4) = 0 [pid 5079] mkdir("./bus", 0777) = 0 [pid 5079] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5075] <... ioctl resumed>) = 0 [pid 5075] close(3 [pid 5074] chdir("./bus" [pid 5075] <... close resumed>) = 0 [pid 5075] close(4 [pid 5074] <... chdir resumed>) = 0 [pid 5075] <... close resumed>) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5076] <... ioctl resumed>) = 0 [pid 5075] mkdir("./bus", 0777 [pid 5074] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5076] close(3 [pid 5075] <... mkdir resumed>) = 0 [pid 5074] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5076] <... close resumed>) = 0 [pid 5075] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5076] close(4) = 0 [pid 5079] <... mount resumed>) = 0 [pid 5076] mkdir("./bus", 0777 [pid 5075] <... mount resumed>) = 0 [pid 5079] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5075] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5079] <... openat resumed>) = 3 [pid 5076] <... mkdir resumed>) = 0 [pid 5075] <... openat resumed>) = 3 [pid 5074] <... symlink resumed>) = 0 [pid 5079] chdir("./bus" [pid 5075] chdir("./bus" [pid 5074] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5079] <... chdir resumed>) = 0 [pid 5076] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5075] <... chdir resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5075] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5079] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5075] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5079] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5078] <... mount resumed>) = 0 [pid 5075] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5076] <... mount resumed>) = 0 [pid 5074] <... creat resumed>) = 4 [pid 5078] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5076] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5075] <... symlink resumed>) = 0 [pid 5074] rename("./bus", "./file2" [pid 5079] <... symlink resumed>) = 0 [pid 5078] <... openat resumed>) = 3 [pid 5076] <... openat resumed>) = 3 [pid 5079] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5078] chdir("./bus" [pid 5076] chdir("./bus" [pid 5075] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5078] <... chdir resumed>) = 0 [pid 5076] <... chdir resumed>) = 0 [ 57.003426][ T5079] loop5: detected capacity change from 0 to 1024 [ 57.013246][ T5075] loop3: detected capacity change from 0 to 1024 [ 57.021930][ T5076] loop1: detected capacity change from 0 to 1024 [ 57.022066][ T5077] loop0: detected capacity change from 0 to 1024 [pid 5078] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5076] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5078] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5079] <... creat resumed>) = 4 [pid 5076] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5075] <... creat resumed>) = 4 [pid 5074] <... rename resumed>) = -1 EEXIST (File exists) [pid 5077] <... ioctl resumed>) = 0 [pid 5078] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5077] close(3 [pid 5074] memfd_create("syzkaller", 0 [pid 5077] <... close resumed>) = 0 [pid 5074] <... memfd_create resumed>) = 5 [pid 5079] rename("./bus", "./file2" [pid 5077] close(4 [pid 5075] rename("./bus", "./file2" [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5079] <... rename resumed>) = -1 EEXIST (File exists) [pid 5077] <... close resumed>) = 0 [pid 5076] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5075] <... rename resumed>) = -1 EEXIST (File exists) [pid 5077] mkdir("./bus", 0777 [pid 5074] <... mmap resumed>) = 0x7f138d200000 [pid 5079] memfd_create("syzkaller", 0 [pid 5077] <... mkdir resumed>) = 0 [pid 5075] memfd_create("syzkaller", 0 [pid 5079] <... memfd_create resumed>) = 5 [pid 5076] <... symlink resumed>) = 0 [pid 5075] <... memfd_create resumed>) = 5 [pid 5079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5077] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5076] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5079] <... mmap resumed>) = 0x7f138d200000 [pid 5078] <... symlink resumed>) = 0 [pid 5075] <... mmap resumed>) = 0x7f138d200000 [pid 5079] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5078] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5075] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5074] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5079] <... write resumed>) = 524288 [pid 5076] <... creat resumed>) = 4 [pid 5076] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5076] memfd_create("syzkaller", 0 [pid 5077] <... mount resumed>) = 0 [pid 5076] <... memfd_create resumed>) = 5 [pid 5075] <... write resumed>) = 524288 [pid 5076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5074] <... write resumed>) = 524288 [pid 5078] <... creat resumed>) = 4 [pid 5077] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5076] <... mmap resumed>) = 0x7f138d200000 [pid 5074] munmap(0x7f138d200000, 138412032 [pid 5078] rename("./bus", "./file2" [pid 5077] <... openat resumed>) = 3 [pid 5076] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5074] <... munmap resumed>) = 0 [pid 5078] <... rename resumed>) = -1 EEXIST (File exists) [pid 5077] chdir("./bus" [pid 5074] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5078] memfd_create("syzkaller", 0 [pid 5077] <... chdir resumed>) = 0 [pid 5074] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5079] munmap(0x7f138d200000, 138412032 [pid 5078] <... memfd_create resumed>) = 5 [pid 5077] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5074] close(5 [pid 5079] <... munmap resumed>) = 0 [pid 5077] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5077] <... symlink resumed>) = 0 [pid 5074] <... close resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5078] <... mmap resumed>) = 0x7f138d200000 [pid 5077] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5076] <... write resumed>) = 524288 [pid 5075] munmap(0x7f138d200000, 138412032 [pid 5074] creat("./file1", 000 [pid 5079] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5075] <... munmap resumed>) = 0 [pid 5079] close(5 [pid 5075] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5079] <... close resumed>) = 0 [pid 5078] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5075] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5077] <... creat resumed>) = 4 [pid 5076] munmap(0x7f138d200000, 138412032 [pid 5075] close(5 [pid 5077] rename("./bus", "./file2" [pid 5076] <... munmap resumed>) = 0 [pid 5075] <... close resumed>) = 0 [pid 5074] <... creat resumed>) = 5 [pid 5076] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5074] exit_group(0 [pid 5076] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5074] <... exit_group resumed>) = ? [pid 5076] close(5) = 0 [pid 5074] +++ exited with 0 +++ [pid 5077] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5074, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5077] memfd_create("syzkaller", 0 [pid 5075] creat("./file1", 000 [pid 5077] <... memfd_create resumed>) = 5 [pid 5077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5077] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5079] creat("./file1", 000 [pid 5076] creat("./file1", 000 [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", [pid 5075] <... creat resumed>) = 5 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5076] <... creat resumed>) = 5 [pid 5075] exit_group(0 [pid 5079] <... creat resumed>) = 5 [pid 5076] exit_group(0 [pid 5075] <... exit_group resumed>) = ? [pid 5079] exit_group(0 [pid 5077] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5076] <... exit_group resumed>) = ? [pid 5075] +++ exited with 0 +++ [pid 5079] <... exit_group resumed>) = ? [pid 5076] +++ exited with 0 +++ [pid 5058] getdents64(3, [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5076, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5079] +++ exited with 0 +++ [pid 5078] <... write resumed>) = 524288 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5079, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5078] munmap(0x7f138d200000, 138412032 [pid 5058] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] <... munmap resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5061] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... openat resumed>) = 3 [pid 5061] newfstatat(3, "", [pid 5057] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5078] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(3, "", [pid 5078] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] getdents64(3, [pid 5057] <... umount2 resumed>) = 0 [pid 5077] <... write resumed>) = 524288 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5078] close(5) = 0 [pid 5061] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5057] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(AT_FDCWD, "./1/bus", [pid 5077] munmap(0x7f138d200000, 138412032 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", [pid 5058] <... umount2 resumed>) = 0 [pid 5078] creat("./file1", 000 [pid 5077] <... munmap resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] close(4) = 0 [pid 5077] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] rmdir("./1/bus" [pid 5077] close(5 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./1/bus", [pid 5057] <... rmdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5078] <... creat resumed>) = 5 [pid 5058] <... openat resumed>) = 4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./1/binderfs") = 0 [pid 5061] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5078] exit_group(0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(4, "", [pid 5057] getdents64(3, [pid 5061] newfstatat(AT_FDCWD, "./1/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5078] <... exit_group resumed>) = ? [pid 5061] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(4, [pid 5057] close(3 [pid 5059] <... umount2 resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... close resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] rmdir("./1" [pid 5061] <... openat resumed>) = 4 [pid 5057] <... rmdir resumed>) = 0 [pid 5078] +++ exited with 0 +++ [pid 5059] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] newfstatat(4, "", [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5077] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5058] getdents64(4, [pid 5057] mkdir("./2", 0777 [pid 5077] creat("./file1", 000 [pid 5061] getdents64(4, [pid 5060] <... restart_syscall resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] newfstatat(AT_FDCWD, "./1/bus", [pid 5058] close(4 [pid 5061] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] rmdir("./1/bus" [pid 5059] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] close(4 [pid 5060] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... close resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] rmdir("./1/bus" [pid 5060] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... rmdir resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(3, "", [pid 5059] <... openat resumed>) = 4 [pid 5058] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5077] <... creat resumed>) = 5 [pid 5061] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(4, "", [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] exit_group(0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(3, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] unlink("./1/binderfs" [pid 5077] <... exit_group resumed>) = ? [pid 5059] getdents64(4, [pid 5061] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... unlink resumed>) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(3, [pid 5059] close(4) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] rmdir("./1/bus" [pid 5058] close(3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./1/binderfs") = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5061] rmdir("./1") = 0 [pid 5061] mkdir("./2", 0777) = 0 [pid 5058] rmdir("./1" [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5077] +++ exited with 0 +++ [pid 5061] <... openat resumed>) = 3 [pid 5059] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... rmdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] mkdir("./2", 0777 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5077, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5059] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5059] unlink("./1/binderfs" [pid 5056] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5056] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] <... openat resumed>) = 3 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(3, "", [pid 5059] close(3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] newfstatat(AT_FDCWD, "./1/bus", [pid 5059] <... close resumed>) = 0 [pid 5056] getdents64(3, [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] rmdir("./1" [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... rmdir resumed>) = 0 [pid 5056] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5060] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] mkdir("./2", 0777 [pid 5060] getdents64(4, [pid 5059] <... mkdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4) = 0 [pid 5060] rmdir("./1/bus") = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5060] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5060] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(3 [pid 5060] unlink("./1/binderfs" [pid 5057] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] newfstatat(AT_FDCWD, "./1/bus", ./strace-static-x86_64: Process 5080 attached [pid 5060] <... unlink resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5080 [pid 5080] set_robust_list(0x555556c07660, 24 [pid 5060] getdents64(3, [pid 5056] umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5080] <... set_robust_list resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5080] chdir("./2" [pid 5061] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5080] <... chdir resumed>) = 0 [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] close(3 [pid 5060] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5080] <... prctl resumed>) = 0 [pid 5060] rmdir("./1") = 0 [pid 5060] mkdir("./2", 0777) = 0 [pid 5059] close(3) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] close(3 [pid 5080] setpgid(0, 0) = 0 [pid 5058] <... close resumed>) = 0 [pid 5056] newfstatat(4, "", [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... close resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 5082 attached [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5082 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5083 [ 57.300592][ T5071] I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [pid 5056] getdents64(4, [pid 5082] set_robust_list(0x555556c07660, 24 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5083 attached ./strace-static-x86_64: Process 5081 attached [pid 5082] <... set_robust_list resumed>) = 0 [pid 5080] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5081 [pid 5056] getdents64(4, [pid 5083] set_robust_list(0x555556c07660, 24 [pid 5082] chdir("./2" [pid 5081] set_robust_list(0x555556c07660, 24 [pid 5080] write(3, "1000", 4 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5080] <... write resumed>) = 4 [pid 5056] close(4 [pid 5083] <... set_robust_list resumed>) = 0 [pid 5081] <... set_robust_list resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5083] chdir("./2" [pid 5082] <... chdir resumed>) = 0 [pid 5081] chdir("./2" [pid 5080] close(3 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5081] <... chdir resumed>) = 0 [pid 5080] <... close resumed>) = 0 [pid 5056] rmdir("./1/bus" [pid 5083] <... chdir resumed>) = 0 [pid 5082] <... prctl resumed>) = 0 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5080] symlink("/dev/binderfs", "./binderfs" [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5082] setpgid(0, 0 [pid 5081] <... prctl resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5083] <... prctl resumed>) = 0 [pid 5082] <... setpgid resumed>) = 0 [pid 5081] setpgid(0, 0 [pid 5080] <... symlink resumed>) = 0 [pid 5083] setpgid(0, 0 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5081] <... setpgid resumed>) = 0 [pid 5056] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5083] <... setpgid resumed>) = 0 [pid 5082] <... openat resumed>) = 3 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5080] memfd_create("syzkaller", 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] write(3, "1000", 4 [pid 5081] <... openat resumed>) = 3 [pid 5080] <... memfd_create resumed>) = 3 [pid 5056] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5083] <... openat resumed>) = 3 [pid 5082] <... write resumed>) = 4 [pid 5081] write(3, "1000", 4 [pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5083] write(3, "1000", 4 [pid 5082] close(3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5083] <... write resumed>) = 4 [pid 5082] <... close resumed>) = 0 [pid 5080] <... mmap resumed>) = 0x7f138d200000 [pid 5083] close(3 [pid 5082] symlink("/dev/binderfs", "./binderfs" [pid 5056] unlink("./1/binderfs" [pid 5081] <... write resumed>) = 4 [pid 5082] <... symlink resumed>) = 0 [pid 5081] close(3 [pid 5083] <... close resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5083] symlink("/dev/binderfs", "./binderfs" [pid 5081] <... close resumed>) = 0 [pid 5083] <... symlink resumed>) = 0 [pid 5082] memfd_create("syzkaller", 0 [pid 5081] symlink("/dev/binderfs", "./binderfs" [pid 5056] getdents64(3, [pid 5082] <... memfd_create resumed>) = 3 [pid 5081] <... symlink resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5083] memfd_create("syzkaller", 0 [pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5081] memfd_create("syzkaller", 0 [pid 5056] close(3 [pid 5081] <... memfd_create resumed>) = 3 [pid 5082] <... mmap resumed>) = 0x7f138d200000 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... close resumed>) = 0 [pid 5081] <... mmap resumed>) = 0x7f138d200000 [pid 5083] <... memfd_create resumed>) = 3 [pid 5082] 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"..., 524288 [pid 5080] 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"..., 524288 [pid 5056] rmdir("./1" [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5081] 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"..., 524288) = 524288 [pid 5060] <... ioctl resumed>) = 0 [pid 5083] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... rmdir resumed>) = 0 [pid 5083] 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"..., 524288 [pid 5081] munmap(0x7f138d200000, 138412032) = 0 [pid 5060] close(3 [pid 5056] mkdir("./2", 0777 [pid 5081] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5060] <... close resumed>) = 0 [pid 5081] ioctl(4, LOOP_SET_FD, 3 [pid 5082] <... write resumed>) = 524288 [pid 5080] <... write resumed>) = 524288 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... mkdir resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5084 [pid 5080] munmap(0x7f138d200000, 138412032 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5080] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 5084 attached [pid 5080] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] <... openat resumed>) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5084] set_robust_list(0x555556c07660, 24 [pid 5083] <... write resumed>) = 524288 [pid 5082] munmap(0x7f138d200000, 138412032 [pid 5080] <... openat resumed>) = 4 [pid 5084] <... set_robust_list resumed>) = 0 [pid 5083] munmap(0x7f138d200000, 138412032 [pid 5080] ioctl(4, LOOP_SET_FD, 3 [pid 5081] <... ioctl resumed>) = 0 [pid 5081] close(3) = 0 [pid 5083] <... munmap resumed>) = 0 [pid 5082] <... munmap resumed>) = 0 [pid 5081] close(4 [pid 5084] chdir("./2" [pid 5083] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5080] <... ioctl resumed>) = 0 [pid 5081] <... close resumed>) = 0 [pid 5081] mkdir("./bus", 0777 [pid 5080] close(3 [pid 5083] <... openat resumed>) = 4 [pid 5081] <... mkdir resumed>) = 0 [pid 5083] ioctl(4, LOOP_SET_FD, 3 [pid 5082] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5080] <... close resumed>) = 0 [ 57.431181][ T5081] loop2: detected capacity change from 0 to 1024 [ 57.447107][ T5080] loop1: detected capacity change from 0 to 1024 [pid 5082] <... openat resumed>) = 4 [pid 5081] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5080] close(4 [pid 5082] ioctl(4, LOOP_SET_FD, 3 [pid 5084] <... chdir resumed>) = 0 [pid 5081] <... mount resumed>) = 0 [pid 5081] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5081] chdir("./bus") = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5080] <... close resumed>) = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5081] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5080] mkdir("./bus", 0777 [pid 5056] <... ioctl resumed>) = 0 [pid 5084] <... prctl resumed>) = 0 [pid 5080] <... mkdir resumed>) = 0 [pid 5084] setpgid(0, 0 [pid 5080] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5084] <... setpgid resumed>) = 0 [pid 5082] <... ioctl resumed>) = 0 [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] close(3 [pid 5081] <... symlink resumed>) = 0 [pid 5084] <... openat resumed>) = 3 [pid 5083] <... ioctl resumed>) = 0 [pid 5082] <... close resumed>) = 0 [pid 5081] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5056] close(3 [pid 5082] close(4) = 0 [pid 5082] mkdir("./bus", 0777 [pid 5084] write(3, "1000", 4 [pid 5083] close(3 [pid 5082] <... mkdir resumed>) = 0 [pid 5080] <... mount resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5084] <... write resumed>) = 4 [pid 5083] <... close resumed>) = 0 [pid 5080] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5084] close(3 [pid 5083] close(4 [pid 5081] <... creat resumed>) = 4 [pid 5080] <... openat resumed>) = 3 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5084] <... close resumed>) = 0 [pid 5083] <... close resumed>) = 0 [pid 5082] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5081] rename("./bus", "./file2" [pid 5080] chdir("./bus" [pid 5084] symlink("/dev/binderfs", "./binderfs" [pid 5083] mkdir("./bus", 0777) = 0 [pid 5084] <... symlink resumed>) = 0 [ 57.471762][ T5083] loop5: detected capacity change from 0 to 1024 [ 57.479379][ T5082] loop3: detected capacity change from 0 to 1024 [pid 5081] <... rename resumed>) = -1 EEXIST (File exists) ./strace-static-x86_64: Process 5085 attached [pid 5084] memfd_create("syzkaller", 0 [pid 5083] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5080] <... chdir resumed>) = 0 [pid 5085] set_robust_list(0x555556c07660, 24 [pid 5081] memfd_create("syzkaller", 0 [pid 5080] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5085 [pid 5085] <... set_robust_list resumed>) = 0 [pid 5081] <... memfd_create resumed>) = 5 [pid 5080] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5084] <... memfd_create resumed>) = 3 [pid 5085] chdir("./2" [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5085] <... chdir resumed>) = 0 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5081] <... mmap resumed>) = 0x7f138d200000 [pid 5080] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5084] <... mmap resumed>) = 0x7f138d200000 [pid 5083] <... mount resumed>) = 0 [pid 5082] <... mount resumed>) = 0 [pid 5081] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5083] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5083] chdir("./bus") = 0 [pid 5085] <... prctl resumed>) = 0 [pid 5083] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5082] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5085] setpgid(0, 0 [pid 5084] 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"..., 524288 [pid 5083] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5082] <... openat resumed>) = 3 [pid 5080] <... symlink resumed>) = 0 [pid 5085] <... setpgid resumed>) = 0 [pid 5083] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5082] chdir("./bus" [pid 5080] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] <... chdir resumed>) = 0 [pid 5085] <... openat resumed>) = 3 [pid 5082] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5081] <... write resumed>) = 524288 [pid 5083] <... symlink resumed>) = 0 [pid 5082] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5085] write(3, "1000", 4 [pid 5083] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5082] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5085] <... write resumed>) = 4 [pid 5085] close(3) = 0 [pid 5081] munmap(0x7f138d200000, 138412032 [pid 5085] symlink("/dev/binderfs", "./binderfs" [pid 5084] <... write resumed>) = 524288 [pid 5083] <... creat resumed>) = 4 [pid 5082] <... symlink resumed>) = 0 [pid 5080] <... creat resumed>) = 4 [pid 5081] <... munmap resumed>) = 0 [pid 5085] <... symlink resumed>) = 0 [pid 5084] munmap(0x7f138d200000, 138412032 [pid 5083] rename("./bus", "./file2" [pid 5082] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5080] rename("./bus", "./file2" [pid 5081] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5084] <... munmap resumed>) = 0 [pid 5081] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5085] memfd_create("syzkaller", 0 [pid 5081] close(5 [pid 5080] <... rename resumed>) = -1 EEXIST (File exists) [pid 5084] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5082] <... creat resumed>) = 4 [pid 5081] <... close resumed>) = 0 [pid 5080] memfd_create("syzkaller", 0 [pid 5085] <... memfd_create resumed>) = 3 [pid 5083] <... rename resumed>) = -1 EEXIST (File exists) [pid 5082] rename("./bus", "./file2" [pid 5085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5084] <... openat resumed>) = 4 [pid 5083] memfd_create("syzkaller", 0 [pid 5080] <... memfd_create resumed>) = 5 [pid 5085] <... mmap resumed>) = 0x7f138d200000 [pid 5085] 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"..., 524288 [pid 5084] ioctl(4, LOOP_SET_FD, 3 [pid 5083] <... memfd_create resumed>) = 5 [pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5081] creat("./file1", 000 [pid 5082] <... rename resumed>) = -1 EEXIST (File exists) [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5082] memfd_create("syzkaller", 0 [pid 5080] <... mmap resumed>) = 0x7f138d200000 [pid 5083] <... mmap resumed>) = 0x7f138d200000 [pid 5082] <... memfd_create resumed>) = 5 [pid 5081] <... creat resumed>) = 5 [pid 5085] <... write resumed>) = 524288 [pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5085] munmap(0x7f138d200000, 138412032 [pid 5084] <... ioctl resumed>) = 0 [pid 5083] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5080] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5084] close(3) = 0 [pid 5084] close(4 [pid 5081] exit_group(0) = ? [pid 5085] <... munmap resumed>) = 0 [pid 5082] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5081] +++ exited with 0 +++ [pid 5084] <... close resumed>) = 0 [pid 5085] openat(AT_FDCWD, "/dev/loop0", O_RDWR [ 57.614993][ T5084] loop4: detected capacity change from 0 to 1024 [pid 5084] mkdir("./bus", 0777 [pid 5085] <... openat resumed>) = 4 [pid 5084] <... mkdir resumed>) = 0 [pid 5083] <... write resumed>) = 524288 [pid 5080] <... write resumed>) = 524288 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5085] ioctl(4, LOOP_SET_FD, 3 [pid 5058] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5084] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5083] munmap(0x7f138d200000, 138412032 [pid 5082] <... write resumed>) = 524288 [pid 5080] munmap(0x7f138d200000, 138412032 [pid 5058] <... umount2 resumed>) = 0 [pid 5085] <... ioctl resumed>) = 0 [pid 5083] <... munmap resumed>) = 0 [pid 5082] munmap(0x7f138d200000, 138412032 [pid 5080] <... munmap resumed>) = 0 [pid 5085] close(3 [pid 5084] <... mount resumed>) = 0 [pid 5083] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5080] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5085] <... close resumed>) = 0 [pid 5084] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5083] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5080] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5085] close(4 [pid 5084] <... openat resumed>) = 3 [pid 5083] close(5 [pid 5082] <... munmap resumed>) = 0 [pid 5080] close(5 [pid 5058] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5085] <... close resumed>) = 0 [pid 5084] chdir("./bus" [pid 5083] <... close resumed>) = 0 [pid 5080] <... close resumed>) = 0 [pid 5084] <... chdir resumed>) = 0 [pid 5082] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5085] mkdir("./bus", 0777 [pid 5084] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] newfstatat(AT_FDCWD, "./2/bus", [pid 5085] <... mkdir resumed>) = 0 [pid 5084] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5082] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5084] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5082] close(5 [pid 5058] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5085] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5080] creat("./file1", 000 [pid 5083] creat("./file1", 000 [pid 5058] <... openat resumed>) = 4 [pid 5058] newfstatat(4, "", [pid 5084] <... symlink resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5084] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5082] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5082] creat("./file1", 000 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./2/bus" [pid 5083] <... creat resumed>) = 5 [pid 5084] <... creat resumed>) = 4 [pid 5083] exit_group(0 [pid 5058] <... rmdir resumed>) = 0 [ 57.666631][ T5085] loop0: detected capacity change from 0 to 1024 [pid 5083] <... exit_group resumed>) = ? [pid 5080] <... creat resumed>) = 5 [pid 5058] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5084] rename("./bus", "./file2" [pid 5080] exit_group(0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5085] <... mount resumed>) = 0 [pid 5083] +++ exited with 0 +++ [pid 5082] <... creat resumed>) = 5 [pid 5080] <... exit_group resumed>) = ? [pid 5058] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5085] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5080] +++ exited with 0 +++ [pid 5085] <... openat resumed>) = 3 [pid 5084] <... rename resumed>) = -1 EEXIST (File exists) [pid 5082] exit_group(0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5085] chdir("./bus" [pid 5061] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5085] <... chdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5085] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5084] memfd_create("syzkaller", 0 [pid 5082] <... exit_group resumed>) = ? [pid 5061] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] unlink("./2/binderfs" [pid 5057] <... restart_syscall resumed>) = 0 [pid 5085] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5084] <... memfd_create resumed>) = 5 [pid 5061] <... openat resumed>) = 3 [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5085] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5082] +++ exited with 0 +++ [pid 5061] getdents64(3, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5058] <... unlink resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5085] <... symlink resumed>) = 0 [pid 5084] <... mmap resumed>) = 0x7f138d200000 [pid 5061] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(3, [pid 5057] <... openat resumed>) = 3 [pid 5085] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5084] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] newfstatat(3, "", [pid 5058] close(3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5058] rmdir("./2") = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] mkdir("./3", 0777 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... mkdir resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5059] newfstatat(3, "", [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5058] <... openat resumed>) = 3 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5059] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5085] <... creat resumed>) = 4 [pid 5085] rename("./bus", "./file2" [pid 5084] <... write resumed>) = 524288 [pid 5084] munmap(0x7f138d200000, 138412032 [pid 5085] <... rename resumed>) = -1 EEXIST (File exists) [pid 5085] memfd_create("syzkaller", 0 [pid 5084] <... munmap resumed>) = 0 [pid 5085] <... memfd_create resumed>) = 5 [pid 5085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5084] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5085] <... mmap resumed>) = 0x7f138d200000 [pid 5084] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5084] close(5) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5084] creat("./file1", 000 [pid 5085] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./2/bus", [pid 5057] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(AT_FDCWD, "./2/bus", [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5085] <... write resumed>) = 524288 [pid 5061] <... openat resumed>) = 4 [pid 5059] newfstatat(AT_FDCWD, "./2/bus", [pid 5057] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5084] <... creat resumed>) = 5 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5084] exit_group(0) = ? [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] newfstatat(4, "", [pid 5057] <... openat resumed>) = 4 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(4, "", [pid 5061] getdents64(4, [pid 5059] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... openat resumed>) = 4 [pid 5057] getdents64(4, [pid 5061] getdents64(4, [pid 5059] newfstatat(4, "", [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] close(4 [pid 5061] close(4 [pid 5059] getdents64(4, [pid 5061] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5061] rmdir("./2/bus" [pid 5057] rmdir("./2/bus" [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5059] getdents64(4, [pid 5061] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5084] +++ exited with 0 +++ [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(4 [pid 5057] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5085] munmap(0x7f138d200000, 138412032 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5059] <... close resumed>) = 0 [pid 5085] <... munmap resumed>) = 0 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5059] rmdir("./2/bus" [pid 5060] <... restart_syscall resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5085] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5085] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5057] unlink("./2/binderfs" [pid 5060] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5085] close(5 [pid 5061] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5059] unlink("./2/binderfs" [pid 5057] getdents64(3, [pid 5085] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5061] unlink("./2/binderfs") = 0 [pid 5085] creat("./file1", 000 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(3, [pid 5058] close(3 [pid 5057] rmdir("./2" [pid 5060] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5061] getdents64(3, [pid 5059] rmdir("./2" [pid 5058] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] mkdir("./3", 0777 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] close(3 [pid 5060] newfstatat(3, "", [pid 5057] <... mkdir resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] rmdir("./2" [pid 5059] mkdir("./3", 0777./strace-static-x86_64: Process 5086 attached [pid 5085] <... creat resumed>) = 5 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] getdents64(3, [pid 5059] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5086] set_robust_list(0x555556c07660, 24 [pid 5085] exit_group(0 [pid 5061] mkdir("./3", 0777 [pid 5060] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5085] <... exit_group resumed>) = ? [pid 5061] <... mkdir resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5085] +++ exited with 0 +++ [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5086 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5085, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] <... openat resumed>) = 3 [pid 5059] <... openat resumed>) = 3 [pid 5056] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5086] <... set_robust_list resumed>) = 0 [pid 5060] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5086] chdir("./3" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... chdir resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./2/bus", [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] <... prctl resumed>) = 0 [pid 5060] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5086] setpgid(0, 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... setpgid resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = 0 [pid 5056] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] <... openat resumed>) = 4 [pid 5060] newfstatat(4, "", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(AT_FDCWD, "./2/bus", [pid 5060] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5086] <... openat resumed>) = 3 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5086] write(3, "1000", 4 [pid 5060] getdents64(4, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... write resumed>) = 4 [pid 5056] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] close(3 [pid 5056] <... openat resumed>) = 4 [pid 5086] <... close resumed>) = 0 [pid 5086] symlink("/dev/binderfs", "./binderfs" [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] newfstatat(4, "", [pid 5057] close(3) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] close(3) = 0 ./strace-static-x86_64: Process 5087 attached [pid 5086] <... symlink resumed>) = 0 [pid 5060] close(4 [pid 5059] close(3 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5087 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] memfd_create("syzkaller", 0 [pid 5060] <... close resumed>) = 0 [pid 5060] rmdir("./2/bus" [pid 5087] set_robust_list(0x555556c07660, 24 [pid 5086] <... memfd_create resumed>) = 3 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5087] <... set_robust_list resumed>) = 0 [pid 5060] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... mmap resumed>) = 0x7f138d200000 [pid 5060] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5088 ./strace-static-x86_64: Process 5088 attached [pid 5088] set_robust_list(0x555556c07660, 24) = 0 [pid 5088] chdir("./3") = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5089 [pid 5087] chdir("./3" [pid 5060] unlink("./2/binderfs" [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5060] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 5089 attached [pid 5088] setpgid(0, 0 [pid 5060] getdents64(3, [pid 5088] <... setpgid resumed>) = 0 [pid 5089] set_robust_list(0x555556c07660, 24 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5089] <... set_robust_list resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5060] close(3 [pid 5089] chdir("./3" [pid 5088] write(3, "1000", 4 [pid 5087] <... chdir resumed>) = 0 [pid 5086] 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"..., 524288 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... close resumed>) = 0 [pid 5089] <... chdir resumed>) = 0 [pid 5088] <... write resumed>) = 4 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] close(3 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] <... close resumed>) = 0 [pid 5087] <... prctl resumed>) = 0 [pid 5060] rmdir("./2" [pid 5089] <... prctl resumed>) = 0 [pid 5088] symlink("/dev/binderfs", "./binderfs" [pid 5087] setpgid(0, 0 [pid 5056] getdents64(4, [pid 5088] <... symlink resumed>) = 0 [pid 5088] memfd_create("syzkaller", 0 [pid 5087] <... setpgid resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5089] setpgid(0, 0 [pid 5088] <... memfd_create resumed>) = 3 [pid 5089] <... setpgid resumed>) = 0 [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5056] getdents64(4, [pid 5088] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5088] 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"..., 524288 [pid 5087] <... openat resumed>) = 3 [pid 5056] close(4 [pid 5089] <... openat resumed>) = 3 [pid 5056] <... close resumed>) = 0 [pid 5089] write(3, "1000", 4 [pid 5056] rmdir("./2/bus" [pid 5089] <... write resumed>) = 4 [pid 5089] close(3 [pid 5087] write(3, "1000", 4 [pid 5086] <... write resumed>) = 524288 [pid 5060] mkdir("./3", 0777 [pid 5056] <... rmdir resumed>) = 0 [pid 5089] <... close resumed>) = 0 [pid 5087] <... write resumed>) = 4 [pid 5060] <... mkdir resumed>) = 0 [pid 5056] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] symlink("/dev/binderfs", "./binderfs" [pid 5087] close(3 [pid 5056] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5060] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... close resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] unlink("./2/binderfs" [pid 5087] symlink("/dev/binderfs", "./binderfs" [pid 5089] <... symlink resumed>) = 0 [pid 5088] <... write resumed>) = 524288 [pid 5087] <... symlink resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5087] memfd_create("syzkaller", 0 [pid 5056] getdents64(3, [pid 5086] munmap(0x7f138d200000, 138412032 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5089] memfd_create("syzkaller", 0 [pid 5087] <... memfd_create resumed>) = 3 [pid 5086] <... munmap resumed>) = 0 [pid 5056] close(3 [pid 5089] <... memfd_create resumed>) = 3 [pid 5088] munmap(0x7f138d200000, 138412032 [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5088] <... munmap resumed>) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] <... close resumed>) = 0 [pid 5086] <... openat resumed>) = 4 [pid 5086] ioctl(4, LOOP_SET_FD, 3 [pid 5089] <... mmap resumed>) = 0x7f138d200000 [pid 5088] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5087] <... mmap resumed>) = 0x7f138d200000 [pid 5056] rmdir("./2" [pid 5088] <... openat resumed>) = 4 [pid 5088] ioctl(4, LOOP_SET_FD, 3 [pid 5089] 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"..., 524288 [pid 5088] <... ioctl resumed>) = 0 [pid 5087] 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"..., 524288 [pid 5056] <... rmdir resumed>) = 0 [pid 5086] <... ioctl resumed>) = 0 [pid 5089] <... write resumed>) = 524288 [pid 5088] close(3 [pid 5087] <... write resumed>) = 524288 [pid 5086] close(3 [pid 5056] mkdir("./3", 0777 [pid 5089] munmap(0x7f138d200000, 138412032 [pid 5088] <... close resumed>) = 0 [pid 5087] munmap(0x7f138d200000, 138412032 [pid 5086] <... close resumed>) = 0 [pid 5089] <... munmap resumed>) = 0 [pid 5088] close(4 [pid 5087] <... munmap resumed>) = 0 [pid 5086] close(4 [pid 5056] <... mkdir resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5086] mkdir("./bus", 0777 [pid 5088] mkdir("./bus", 0777 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... mkdir resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] <... mkdir resumed>) = 0 [pid 5089] <... openat resumed>) = 4 [pid 5087] <... openat resumed>) = 4 [pid 5089] ioctl(4, LOOP_SET_FD, 3 [pid 5087] ioctl(4, LOOP_SET_FD, 3 [pid 5086] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5088] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5056] <... openat resumed>) = 3 [pid 5060] <... ioctl resumed>) = 0 [pid 5060] close(3) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5090 attached , child_tidptr=0x555556c07650) = 5090 [pid 5090] set_robust_list(0x555556c07660, 24) = 0 [pid 5090] chdir("./3" [pid 5086] <... mount resumed>) = 0 [pid 5089] <... ioctl resumed>) = 0 [pid 5087] <... ioctl resumed>) = 0 [pid 5090] <... chdir resumed>) = 0 [pid 5089] close(3 [pid 5087] close(3 [pid 5086] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5089] <... close resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5090] <... prctl resumed>) = 0 [pid 5089] close(4 [pid 5088] <... mount resumed>) = 0 [pid 5087] close(4 [pid 5086] chdir("./bus" [pid 5090] setpgid(0, 0 [pid 5089] <... close resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5086] <... chdir resumed>) = 0 [pid 5090] <... setpgid resumed>) = 0 [pid 5089] mkdir("./bus", 0777 [pid 5087] mkdir("./bus", 0777 [pid 5086] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] <... mkdir resumed>) = 0 [pid 5088] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5087] <... mkdir resumed>) = 0 [pid 5086] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] <... openat resumed>) = 3 [pid 5086] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5088] <... openat resumed>) = 3 [pid 5087] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [ 57.979414][ T5086] loop2: detected capacity change from 0 to 1024 [ 57.987778][ T5088] loop5: detected capacity change from 0 to 1024 [ 58.013638][ T5087] loop1: detected capacity change from 0 to 1024 [ 58.020898][ T5089] loop3: detected capacity change from 0 to 1024 [pid 5090] write(3, "1000", 4) = 4 [pid 5089] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5088] chdir("./bus" [pid 5090] close(3 [pid 5088] <... chdir resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5089] <... mount resumed>) = 0 [pid 5087] <... mount resumed>) = 0 [pid 5090] symlink("/dev/binderfs", "./binderfs" [pid 5089] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5087] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5090] <... symlink resumed>) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5087] <... openat resumed>) = 3 [pid 5086] <... symlink resumed>) = 0 [pid 5090] memfd_create("syzkaller", 0 [pid 5089] chdir("./bus" [pid 5088] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5087] chdir("./bus" [pid 5090] <... memfd_create resumed>) = 3 [pid 5089] <... chdir resumed>) = 0 [pid 5087] <... chdir resumed>) = 0 [pid 5086] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5090] <... mmap resumed>) = 0x7f138d200000 [pid 5089] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5087] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5087] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5089] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5087] <... symlink resumed>) = 0 [pid 5087] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5056] <... ioctl resumed>) = 0 [pid 5089] <... symlink resumed>) = 0 [pid 5088] <... symlink resumed>) = 0 [pid 5087] <... creat resumed>) = 4 [pid 5087] rename("./bus", "./file2" [pid 5088] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5089] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5087] <... rename resumed>) = -1 EEXIST (File exists) [pid 5086] <... creat resumed>) = 4 [pid 5089] <... creat resumed>) = 4 [pid 5088] <... creat resumed>) = 4 [pid 5087] memfd_create("syzkaller", 0 [pid 5086] rename("./bus", "./file2" [pid 5056] close(3 [pid 5090] 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"..., 524288 [pid 5089] rename("./bus", "./file2" [pid 5087] <... memfd_create resumed>) = 5 [pid 5086] <... rename resumed>) = -1 EEXIST (File exists) [pid 5090] <... write resumed>) = 524288 [pid 5089] <... rename resumed>) = -1 EEXIST (File exists) [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5086] memfd_create("syzkaller", 0 [pid 5087] <... mmap resumed>) = 0x7f138d200000 [pid 5089] memfd_create("syzkaller", 0 [pid 5086] <... memfd_create resumed>) = 5 [pid 5089] <... memfd_create resumed>) = 5 [pid 5089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5088] rename("./bus", "./file2" [pid 5056] <... close resumed>) = 0 [pid 5087] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] munmap(0x7f138d200000, 138412032) = 0 [pid 5088] <... rename resumed>) = -1 EEXIST (File exists) ./strace-static-x86_64: Process 5091 attached [pid 5089] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5088] memfd_create("syzkaller", 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5091] set_robust_list(0x555556c07660, 24 [pid 5090] <... openat resumed>) = 4 [pid 5090] ioctl(4, LOOP_SET_FD, 3 [pid 5089] <... write resumed>) = 524288 [pid 5091] <... set_robust_list resumed>) = 0 [pid 5088] <... memfd_create resumed>) = 5 [pid 5086] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5091 [pid 5091] chdir("./3" [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5088] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5091] <... chdir resumed>) = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5091] setpgid(0, 0 [pid 5087] <... write resumed>) = 524288 [pid 5091] <... setpgid resumed>) = 0 [pid 5087] munmap(0x7f138d200000, 138412032 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5087] <... munmap resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5086] <... write resumed>) = 524288 [pid 5089] munmap(0x7f138d200000, 138412032) = 0 [pid 5087] close(5 [pid 5091] <... openat resumed>) = 3 [pid 5090] <... ioctl resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5087] <... close resumed>) = 0 [pid 5090] close(3 [pid 5089] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5086] munmap(0x7f138d200000, 138412032 [pid 5091] write(3, "1000", 4 [pid 5090] <... close resumed>) = 0 [pid 5086] <... munmap resumed>) = 0 [pid 5091] <... write resumed>) = 4 [pid 5089] close(5 [pid 5091] close(3 [pid 5090] close(4 [pid 5089] <... close resumed>) = 0 [pid 5088] <... write resumed>) = 524288 [pid 5086] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5090] <... close resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5090] mkdir("./bus", 0777 [pid 5086] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] symlink("/dev/binderfs", "./binderfs" [pid 5090] <... mkdir resumed>) = 0 [pid 5088] munmap(0x7f138d200000, 138412032 [pid 5087] creat("./file1", 000 [pid 5091] <... symlink resumed>) = 0 [pid 5088] <... munmap resumed>) = 0 [pid 5086] close(5 [pid 5091] memfd_create("syzkaller", 0 [pid 5090] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5088] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5087] <... creat resumed>) = 5 [pid 5086] <... close resumed>) = 0 [pid 5091] <... memfd_create resumed>) = 3 [pid 5090] <... mount resumed>) = 0 [pid 5089] creat("./file1", 000 [pid 5088] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5087] exit_group(0 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5088] close(5 [pid 5091] <... mmap resumed>) = 0x7f138d200000 [pid 5090] <... openat resumed>) = 3 [pid 5087] <... exit_group resumed>) = ? [pid 5090] chdir("./bus" [pid 5088] <... close resumed>) = 0 [pid 5087] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5090] <... chdir resumed>) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [ 58.125976][ T5090] loop4: detected capacity change from 0 to 1024 [pid 5090] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5089] <... creat resumed>) = 5 [pid 5089] exit_group(0) = ? [pid 5090] <... symlink resumed>) = 0 [pid 5089] +++ exited with 0 +++ [pid 5086] creat("./file1", 000 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5057] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5091] 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"..., 524288 [pid 5090] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5088] creat("./file1", 000 [pid 5090] <... creat resumed>) = 4 [pid 5086] <... creat resumed>) = 5 [pid 5057] <... openat resumed>) = 3 [pid 5090] rename("./bus", "./file2" [pid 5086] exit_group(0 [pid 5057] newfstatat(3, "", [pid 5090] <... rename resumed>) = -1 EEXIST (File exists) [pid 5086] <... exit_group resumed>) = ? [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5090] memfd_create("syzkaller", 0 [pid 5057] getdents64(3, [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... creat resumed>) = 5 [pid 5059] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] exit_group(0 [pid 5090] <... memfd_create resumed>) = 5 [pid 5088] <... exit_group resumed>) = ? [pid 5059] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5086] +++ exited with 0 +++ [pid 5057] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5090] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5088] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5058] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5091] <... write resumed>) = 524288 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 3 [pid 5061] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", [pid 5061] newfstatat(3, "", [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, [pid 5061] getdents64(3, [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5091] munmap(0x7f138d200000, 138412032 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./3/bus", [pid 5090] <... write resumed>) = 524288 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] <... munmap resumed>) = 0 [pid 5059] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5091] <... openat resumed>) = 4 [pid 5090] munmap(0x7f138d200000, 138412032 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = 0 [pid 5091] ioctl(4, LOOP_SET_FD, 3 [pid 5059] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5090] <... munmap resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] getdents64(4, [pid 5090] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5090] close(5 [pid 5059] <... close resumed>) = 0 [pid 5061] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] rmdir("./3/bus") = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./3/bus", [pid 5059] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... close resumed>) = 0 [pid 5061] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./3/bus", [pid 5058] newfstatat(AT_FDCWD, "./3/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5058] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... openat resumed>) = 4 [pid 5059] unlink("./3/binderfs" [pid 5058] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] newfstatat(4, "", [pid 5059] <... unlink resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5057] <... openat resumed>) = 4 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] newfstatat(4, "", [pid 5061] getdents64(4, [pid 5058] newfstatat(4, "", [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(3, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(4, [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5090] creat("./file1", 000 [pid 5061] close(4 [pid 5059] <... close resumed>) = 0 [pid 5058] getdents64(4, [pid 5057] getdents64(4, [pid 5091] <... ioctl resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5059] rmdir("./3" [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5091] close(3 [pid 5061] rmdir("./3/bus" [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5091] <... close resumed>) = 0 [pid 5091] close(4 [pid 5061] <... rmdir resumed>) = 0 [pid 5058] close(4 [pid 5091] <... close resumed>) = 0 [pid 5091] mkdir("./bus", 0777 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] getdents64(4, [pid 5058] rmdir("./3/bus" [pid 5091] <... mkdir resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5091] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] close(4 [pid 5061] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] mkdir("./4", 0777 [pid 5058] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5090] <... creat resumed>) = 5 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] rmdir("./3/bus" [pid 5061] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5090] exit_group(0 [pid 5061] unlink("./3/binderfs" [pid 5058] unlink("./3/binderfs" [pid 5090] <... exit_group resumed>) = ? [pid 5061] <... unlink resumed>) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5090] +++ exited with 0 +++ [pid 5061] getdents64(3, [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(3, [pid 5061] close(3 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... close resumed>) = 0 [ 58.250927][ T5091] loop0: detected capacity change from 0 to 1024 [pid 5060] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] close(3 [pid 5058] close(3 [pid 5061] rmdir("./3" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... rmdir resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] rmdir("./3"./strace-static-x86_64: Process 5092 attached [pid 5091] <... mount resumed>) = 0 [pid 5061] mkdir("./4", 0777 [pid 5060] <... openat resumed>) = 3 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5092 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5092] set_robust_list(0x555556c07660, 24 [pid 5091] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] <... mkdir resumed>) = 0 [pid 5060] newfstatat(3, "", [pid 5092] <... set_robust_list resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] mkdir("./4", 0777 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5092] chdir("./4" [pid 5091] chdir("./bus" [pid 5061] <... openat resumed>) = 3 [pid 5060] getdents64(3, [pid 5058] <... mkdir resumed>) = 0 [pid 5057] unlink("./3/binderfs" [pid 5092] <... chdir resumed>) = 0 [pid 5091] <... chdir resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... unlink resumed>) = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5057] getdents64(3, [pid 5092] <... prctl resumed>) = 0 [pid 5091] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5092] setpgid(0, 0 [pid 5091] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5092] <... setpgid resumed>) = 0 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5092] write(3, "1000", 4 [pid 5057] close(3 [pid 5092] <... write resumed>) = 4 [pid 5092] close(3 [pid 5091] <... symlink resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... close resumed>) = 0 [pid 5092] <... close resumed>) = 0 [pid 5091] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] rmdir("./3" [pid 5092] symlink("/dev/binderfs", "./binderfs" [pid 5057] <... rmdir resumed>) = 0 [pid 5092] <... symlink resumed>) = 0 [pid 5057] mkdir("./4", 0777 [pid 5092] memfd_create("syzkaller", 0) = 3 [pid 5091] <... creat resumed>) = 4 [pid 5060] <... umount2 resumed>) = 0 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] rename("./bus", "./file2" [pid 5057] <... mkdir resumed>) = 0 [pid 5092] <... mmap resumed>) = 0x7f138d200000 [pid 5092] 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"..., 524288 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD) = 0 [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5091] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] <... ioctl resumed>) = 0 [pid 5060] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5091] memfd_create("syzkaller", 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] <... memfd_create resumed>) = 5 [pid 5060] newfstatat(AT_FDCWD, "./3/bus", [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] <... mmap resumed>) = 0x7f138d200000 [pid 5060] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5091] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] close(3 [pid 5060] <... openat resumed>) = 4 [pid 5061] <... close resumed>) = 0 [pid 5060] newfstatat(4, "", [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5093 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 5093 attached [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5093] set_robust_list(0x555556c07660, 24 [pid 5060] getdents64(4, [pid 5093] <... set_robust_list resumed>) = 0 [pid 5092] <... write resumed>) = 524288 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5094 [pid 5060] <... close resumed>) = 0 [pid 5093] chdir("./4"./strace-static-x86_64: Process 5094 attached ) = 0 [pid 5060] rmdir("./3/bus" [pid 5058] <... ioctl resumed>) = 0 [pid 5094] set_robust_list(0x555556c07660, 24 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5094] <... set_robust_list resumed>) = 0 [pid 5094] chdir("./4" [pid 5093] <... prctl resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5094] <... chdir resumed>) = 0 [pid 5093] setpgid(0, 0 [pid 5092] munmap(0x7f138d200000, 138412032 [pid 5091] <... write resumed>) = 524288 [pid 5060] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5093] <... setpgid resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5092] <... munmap resumed>) = 0 [pid 5091] munmap(0x7f138d200000, 138412032 [pid 5060] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5058] <... close resumed>) = 0 [pid 5094] <... prctl resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5093] <... openat resumed>) = 3 [pid 5060] unlink("./3/binderfs" [pid 5093] write(3, "1000", 4./strace-static-x86_64: Process 5095 attached [pid 5094] setpgid(0, 0 [pid 5093] <... write resumed>) = 4 [pid 5092] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] <... munmap resumed>) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5095] set_robust_list(0x555556c07660, 24 [pid 5094] <... setpgid resumed>) = 0 [pid 5093] close(3 [pid 5092] <... openat resumed>) = 4 [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] getdents64(3, [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5095 [pid 5095] <... set_robust_list resumed>) = 0 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5093] <... close resumed>) = 0 [pid 5092] ioctl(4, LOOP_SET_FD, 3 [pid 5091] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3 [pid 5093] symlink("/dev/binderfs", "./binderfs" [pid 5091] close(5 [pid 5060] <... close resumed>) = 0 [pid 5095] chdir("./4" [pid 5093] <... symlink resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5060] rmdir("./3" [pid 5094] <... openat resumed>) = 3 [pid 5093] memfd_create("syzkaller", 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5060] mkdir("./4", 0777 [pid 5095] <... chdir resumed>) = 0 [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5095] setpgid(0, 0 [pid 5093] <... memfd_create resumed>) = 3 [pid 5060] <... mkdir resumed>) = 0 [pid 5095] <... setpgid resumed>) = 0 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5091] creat("./file1", 000 [pid 5095] write(3, "1000", 4 [pid 5093] <... mmap resumed>) = 0x7f138d200000 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5095] <... write resumed>) = 4 [pid 5094] write(3, "1000", 4 [pid 5095] close(3 [pid 5094] <... write resumed>) = 4 [pid 5095] <... close resumed>) = 0 [pid 5094] close(3 [pid 5060] <... openat resumed>) = 3 [pid 5095] symlink("/dev/binderfs", "./binderfs" [pid 5094] <... close resumed>) = 0 [pid 5095] <... symlink resumed>) = 0 [pid 5094] symlink("/dev/binderfs", "./binderfs" [pid 5095] memfd_create("syzkaller", 0 [pid 5094] <... symlink resumed>) = 0 [pid 5095] <... memfd_create resumed>) = 3 [pid 5094] memfd_create("syzkaller", 0 [pid 5092] <... ioctl resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5094] <... memfd_create resumed>) = 3 [pid 5092] close(3 [pid 5095] <... mmap resumed>) = 0x7f138d200000 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5092] <... close resumed>) = 0 [pid 5091] <... creat resumed>) = 5 [pid 5094] <... mmap resumed>) = 0x7f138d200000 [pid 5093] 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"..., 524288 [pid 5092] close(4 [pid 5091] exit_group(0 [pid 5092] <... close resumed>) = 0 [pid 5095] 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"..., 524288 [pid 5092] mkdir("./bus", 0777 [pid 5091] <... exit_group resumed>) = ? [pid 5092] <... mkdir resumed>) = 0 [pid 5094] 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"..., 524288 [ 58.447570][ T5092] loop3: detected capacity change from 0 to 1024 [pid 5092] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5095] <... write resumed>) = 524288 [pid 5094] <... write resumed>) = 524288 [pid 5091] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5093] <... write resumed>) = 524288 [pid 5056] getdents64(3, [pid 5094] munmap(0x7f138d200000, 138412032) = 0 [pid 5095] munmap(0x7f138d200000, 138412032 [pid 5092] <... mount resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5095] <... munmap resumed>) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5092] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5094] <... openat resumed>) = 4 [pid 5093] munmap(0x7f138d200000, 138412032 [pid 5092] <... openat resumed>) = 3 [pid 5056] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5094] ioctl(4, LOOP_SET_FD, 3 [pid 5092] chdir("./bus" [pid 5093] <... munmap resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5095] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5092] <... chdir resumed>) = 0 [pid 5095] <... openat resumed>) = 4 [pid 5092] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5093] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5092] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5093] <... openat resumed>) = 4 [pid 5093] ioctl(4, LOOP_SET_FD, 3 [pid 5095] ioctl(4, LOOP_SET_FD, 3 [pid 5093] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5056] <... umount2 resumed>) = 0 [pid 5092] <... symlink resumed>) = 0 [pid 5092] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5094] <... ioctl resumed>) = 0 [pid 5094] close(3 [pid 5060] <... close resumed>) = 0 [pid 5094] <... close resumed>) = 0 [pid 5094] close(4) = 0 [pid 5094] mkdir("./bus", 0777) = 0 [pid 5094] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5092] <... creat resumed>) = 4 [pid 5092] rename("./bus", "./file2" [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5092] <... rename resumed>) = -1 EEXIST (File exists) [pid 5056] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5092] memfd_create("syzkaller", 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5092] <... memfd_create resumed>) = 5 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] newfstatat(AT_FDCWD, "./3/bus", [pid 5092] <... mmap resumed>) = 0x7f138d200000 ./strace-static-x86_64: Process 5096 attached [pid 5092] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5096 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5096] set_robust_list(0x555556c07660, 24 [pid 5056] umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5093] close(3 [pid 5096] <... set_robust_list resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5093] <... close resumed>) = 0 [pid 5096] chdir("./4" [pid 5094] <... mount resumed>) = 0 [pid 5093] close(4 [pid 5056] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5096] <... chdir resumed>) = 0 [pid 5094] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5094] chdir("./bus") = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5094] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5056] <... openat resumed>) = 4 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] <... close resumed>) = 0 [pid 5056] newfstatat(4, "", [pid 5096] <... prctl resumed>) = 0 [pid 5094] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5093] mkdir("./bus", 0777 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5096] setpgid(0, 0 [pid 5095] <... ioctl resumed>) = 0 [pid 5096] <... setpgid resumed>) = 0 [pid 5095] close(3 [pid 5094] <... creat resumed>) = 4 [pid 5056] getdents64(4, [pid 5095] <... close resumed>) = 0 [pid 5094] rename("./bus", "./file2" [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5095] close(4 [pid 5094] <... rename resumed>) = -1 EEXIST (File exists) [pid 5092] <... write resumed>) = 524288 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5095] <... close resumed>) = 0 [pid 5094] memfd_create("syzkaller", 0 [pid 5095] mkdir("./bus", 0777 [pid 5094] <... memfd_create resumed>) = 5 [pid 5093] <... mkdir resumed>) = 0 [pid 5056] getdents64(4, [pid 5096] <... openat resumed>) = 3 [pid 5095] <... mkdir resumed>) = 0 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5093] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [ 58.532367][ T5094] loop5: detected capacity change from 0 to 1024 [ 58.546128][ T5093] loop1: detected capacity change from 0 to 1024 [ 58.546776][ T5095] loop2: detected capacity change from 0 to 1024 [pid 5092] munmap(0x7f138d200000, 138412032 [pid 5096] write(3, "1000", 4 [pid 5094] <... mmap resumed>) = 0x7f138d200000 [pid 5092] <... munmap resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5096] <... write resumed>) = 4 [pid 5095] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5096] close(3 [pid 5056] close(4 [pid 5096] <... close resumed>) = 0 [pid 5095] <... mount resumed>) = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5096] symlink("/dev/binderfs", "./binderfs" [pid 5095] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5092] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] <... close resumed>) = 0 [pid 5096] <... symlink resumed>) = 0 [pid 5095] <... openat resumed>) = 3 [pid 5092] close(5 [pid 5056] rmdir("./3/bus" [pid 5096] memfd_create("syzkaller", 0 [pid 5095] chdir("./bus" [pid 5092] <... close resumed>) = 0 [pid 5096] <... memfd_create resumed>) = 3 [pid 5095] <... chdir resumed>) = 0 [pid 5094] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] <... rmdir resumed>) = 0 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5095] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5093] <... mount resumed>) = 0 [pid 5096] <... mmap resumed>) = 0x7f138d200000 [pid 5095] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5094] <... write resumed>) = 524288 [pid 5093] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5056] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5093] <... openat resumed>) = 3 [pid 5093] chdir("./bus") = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5092] creat("./file1", 000 [pid 5093] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5095] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5093] <... symlink resumed>) = 0 [pid 5096] 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"..., 524288 [pid 5095] <... symlink resumed>) = 0 [pid 5093] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5095] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5094] munmap(0x7f138d200000, 138412032) = 0 [pid 5056] unlink("./3/binderfs" [pid 5092] <... creat resumed>) = 5 [pid 5094] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5092] exit_group(0 [pid 5094] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5092] <... exit_group resumed>) = ? [pid 5094] close(5 [pid 5096] <... write resumed>) = 524288 [pid 5093] <... creat resumed>) = 4 [pid 5056] <... unlink resumed>) = 0 [pid 5093] rename("./bus", "./file2" [pid 5095] <... creat resumed>) = 4 [pid 5095] rename("./bus", "./file2" [pid 5094] <... close resumed>) = 0 [pid 5095] <... rename resumed>) = -1 EEXIST (File exists) [pid 5095] memfd_create("syzkaller", 0 [pid 5093] <... rename resumed>) = -1 EEXIST (File exists) [pid 5092] +++ exited with 0 +++ [pid 5056] getdents64(3, [pid 5096] munmap(0x7f138d200000, 138412032 [pid 5094] creat("./file1", 000 [pid 5093] memfd_create("syzkaller", 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5095] <... memfd_create resumed>) = 5 [pid 5093] <... memfd_create resumed>) = 5 [pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] close(3 [pid 5096] <... munmap resumed>) = 0 [pid 5095] <... mmap resumed>) = 0x7f138d200000 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... close resumed>) = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5093] <... mmap resumed>) = 0x7f138d200000 [pid 5056] rmdir("./3" [pid 5096] <... openat resumed>) = 4 [pid 5094] <... creat resumed>) = 5 [pid 5093] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5094] exit_group(0 [pid 5096] ioctl(4, LOOP_SET_FD, 3 [pid 5094] <... exit_group resumed>) = ? [pid 5056] <... rmdir resumed>) = 0 [pid 5094] +++ exited with 0 +++ [pid 5059] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5095] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... umount2 resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5056] mkdir("./4", 0777 [pid 5095] <... write resumed>) = 524288 [pid 5056] <... mkdir resumed>) = 0 [pid 5059] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./4/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] newfstatat(4, "", [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 3 [pid 5061] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5061] <... openat resumed>) = 3 [pid 5061] newfstatat(3, "", [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./4/bus" [pid 5096] <... ioctl resumed>) = 0 [pid 5093] <... write resumed>) = 524288 [pid 5061] getdents64(3, [pid 5059] <... rmdir resumed>) = 0 [pid 5059] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5096] close(3 [pid 5093] munmap(0x7f138d200000, 138412032 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./4/binderfs" [pid 5096] <... close resumed>) = 0 [pid 5093] <... munmap resumed>) = 0 [pid 5061] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... unlink resumed>) = 0 [pid 5096] close(4 [pid 5059] getdents64(3, [pid 5096] <... close resumed>) = 0 [pid 5095] munmap(0x7f138d200000, 138412032 [pid 5093] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] <... umount2 resumed>) = 0 [pid 5096] mkdir("./bus", 0777 [pid 5093] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(3 [pid 5061] newfstatat(AT_FDCWD, "./4/bus", [pid 5059] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] rmdir("./4" [pid 5061] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... rmdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] mkdir("./5", 0777 [pid 5096] <... mkdir resumed>) = 0 [pid 5061] newfstatat(4, "", [pid 5096] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5095] <... munmap resumed>) = 0 [pid 5093] close(5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, [pid 5059] <... mkdir resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] getdents64(4, [pid 5059] <... openat resumed>) = 3 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5061] rmdir("./4/bus" [pid 5095] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... rmdir resumed>) = 0 [pid 5095] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5096] <... mount resumed>) = 0 [pid 5095] close(5 [pid 5093] <... close resumed>) = 0 [ 58.694537][ T5096] loop4: detected capacity change from 0 to 1024 [pid 5096] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5095] <... close resumed>) = 0 [pid 5093] creat("./file1", 000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5096] <... openat resumed>) = 3 [pid 5061] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./4/binderfs" [pid 5096] chdir("./bus" [pid 5061] <... unlink resumed>) = 0 [pid 5061] getdents64(3, [pid 5096] <... chdir resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] close(3) = 0 [pid 5096] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] rmdir("./4" [pid 5096] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5095] creat("./file1", 000 [pid 5093] <... creat resumed>) = 5 [pid 5061] <... rmdir resumed>) = 0 [pid 5096] <... symlink resumed>) = 0 [pid 5095] <... creat resumed>) = 5 [pid 5093] exit_group(0 [pid 5061] mkdir("./5", 0777 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5096] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5093] <... exit_group resumed>) = ? [pid 5061] <... mkdir resumed>) = 0 [pid 5095] exit_group(0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] close(3 [pid 5095] <... exit_group resumed>) = ? [pid 5093] +++ exited with 0 +++ [pid 5056] close(3 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5057] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5096] <... creat resumed>) = 4 [pid 5095] +++ exited with 0 +++ [pid 5057] newfstatat(3, "", [pid 5056] <... close resumed>) = 0 [pid 5096] rename("./bus", "./file2" [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... close resumed>) = 0 [pid 5058] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", ./strace-static-x86_64: Process 5097 attached [pid 5096] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5098 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5097 ./strace-static-x86_64: Process 5098 attached [pid 5097] set_robust_list(0x555556c07660, 24 [pid 5096] memfd_create("syzkaller", 0 [pid 5098] set_robust_list(0x555556c07660, 24 [pid 5097] <... set_robust_list resumed>) = 0 [pid 5096] <... memfd_create resumed>) = 5 [pid 5057] <... umount2 resumed>) = 0 [pid 5098] <... set_robust_list resumed>) = 0 [pid 5097] chdir("./4" [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5098] chdir("./5" [pid 5097] <... chdir resumed>) = 0 [pid 5096] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5057] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5097] setpgid(0, 0) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./4/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5098] <... chdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... openat resumed>) = 4 [pid 5098] <... prctl resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] newfstatat(4, "", [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5098] setpgid(0, 0 [pid 5058] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(4, [pid 5098] <... setpgid resumed>) = 0 [pid 5097] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] getdents64(4, [pid 5061] <... ioctl resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5097] write(3, "1000", 4 [pid 5098] <... openat resumed>) = 3 [pid 5057] close(4) = 0 [pid 5057] rmdir("./4/bus" [pid 5098] write(3, "1000", 4 [pid 5057] <... rmdir resumed>) = 0 [pid 5098] <... write resumed>) = 4 [pid 5098] close(3 [pid 5057] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5098] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5098] symlink("/dev/binderfs", "./binderfs" [pid 5057] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5098] <... symlink resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./4/binderfs") = 0 [pid 5098] memfd_create("syzkaller", 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5057] close(3 [pid 5098] <... memfd_create resumed>) = 3 [pid 5097] <... write resumed>) = 4 [pid 5096] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] rmdir("./4" [pid 5098] <... mmap resumed>) = 0x7f138d200000 [pid 5097] close(3 [pid 5057] <... rmdir resumed>) = 0 [pid 5097] <... close resumed>) = 0 [pid 5058] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5097] symlink("/dev/binderfs", "./binderfs" [pid 5098] 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"..., 524288 [pid 5097] <... symlink resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5099 ./strace-static-x86_64: Process 5099 attached [pid 5099] set_robust_list(0x555556c07660, 24) = 0 [pid 5099] chdir("./5" [pid 5057] mkdir("./5", 0777) = 0 [pid 5099] <... chdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5097] memfd_create("syzkaller", 0 [pid 5058] newfstatat(AT_FDCWD, "./4/bus", [pid 5057] <... openat resumed>) = 3 [pid 5099] <... prctl resumed>) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5099] setpgid(0, 0) = 0 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5099] <... openat resumed>) = 3 [pid 5097] <... memfd_create resumed>) = 3 [pid 5099] write(3, "1000", 4 [pid 5058] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5099] <... write resumed>) = 4 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5099] close(3 [pid 5097] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5099] <... close resumed>) = 0 [pid 5099] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5058] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5099] memfd_create("syzkaller", 0 [pid 5097] 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"..., 524288 [pid 5058] <... openat resumed>) = 4 [pid 5099] <... memfd_create resumed>) = 3 [pid 5058] newfstatat(4, "", [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5098] <... write resumed>) = 524288 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5096] <... write resumed>) = 524288 [pid 5098] munmap(0x7f138d200000, 138412032 [pid 5099] 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"..., 524288 [pid 5098] <... munmap resumed>) = 0 [pid 5096] munmap(0x7f138d200000, 138412032 [pid 5058] getdents64(4, [pid 5098] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5096] <... munmap resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5098] ioctl(4, LOOP_SET_FD, 3 [pid 5097] <... write resumed>) = 524288 [pid 5096] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] close(4) = 0 [pid 5096] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5099] <... write resumed>) = 524288 [pid 5097] munmap(0x7f138d200000, 138412032 [pid 5096] close(5 [pid 5058] rmdir("./4/bus" [pid 5099] munmap(0x7f138d200000, 138412032) = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5096] <... close resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5097] <... munmap resumed>) = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5099] ioctl(4, LOOP_SET_FD, 3 [pid 5098] <... ioctl resumed>) = 0 [pid 5097] <... openat resumed>) = 4 [pid 5096] creat("./file1", 000 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5097] ioctl(4, LOOP_SET_FD, 3 [pid 5058] unlink("./4/binderfs" [pid 5057] <... ioctl resumed>) = 0 [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... unlink resumed>) = 0 [pid 5058] getdents64(3, ./strace-static-x86_64: Process 5100 attached [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5100 [pid 5100] set_robust_list(0x555556c07660, 24) = 0 [pid 5100] chdir("./5" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5100] <... chdir resumed>) = 0 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5100] setpgid(0, 0) = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5098] close(3 [pid 5058] close(3 [pid 5100] <... openat resumed>) = 3 [pid 5099] <... ioctl resumed>) = 0 [pid 5098] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5099] close(3 [pid 5098] close(4 [pid 5058] rmdir("./4" [pid 5098] <... close resumed>) = 0 [pid 5100] write(3, "1000", 4 [pid 5099] <... close resumed>) = 0 [pid 5100] <... write resumed>) = 4 [pid 5099] close(4 [pid 5100] close(3 [pid 5099] <... close resumed>) = 0 [pid 5100] <... close resumed>) = 0 [pid 5098] mkdir("./bus", 0777 [pid 5058] <... rmdir resumed>) = 0 [pid 5100] symlink("/dev/binderfs", "./binderfs" [pid 5099] mkdir("./bus", 0777 [pid 5100] <... symlink resumed>) = 0 [pid 5099] <... mkdir resumed>) = 0 [pid 5098] <... mkdir resumed>) = 0 [pid 5096] <... creat resumed>) = 5 [pid 5058] mkdir("./5", 0777 [pid 5100] memfd_create("syzkaller", 0 [pid 5099] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5100] <... memfd_create resumed>) = 3 [pid 5099] <... mount resumed>) = 0 [pid 5097] <... ioctl resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5099] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5097] close(3 [pid 5100] <... mmap resumed>) = 0x7f138d200000 [pid 5099] <... openat resumed>) = 3 [pid 5097] <... close resumed>) = 0 [pid 5100] 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"..., 524288 [pid 5099] chdir("./bus" [pid 5098] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5097] close(4 [pid 5096] exit_group(0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5099] <... chdir resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5099] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5097] <... close resumed>) = 0 [pid 5099] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5097] mkdir("./bus", 0777 [pid 5096] <... exit_group resumed>) = ? [pid 5097] <... mkdir resumed>) = 0 [pid 5099] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5097] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5099] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5096] +++ exited with 0 +++ [pid 5100] <... write resumed>) = 524288 [pid 5099] <... creat resumed>) = 4 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 58.886353][ T5098] loop3: detected capacity change from 0 to 1024 [ 58.901326][ T5099] loop5: detected capacity change from 0 to 1024 [ 58.910878][ T5097] loop0: detected capacity change from 0 to 1024 [pid 5099] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5098] <... mount resumed>) = 0 [pid 5097] <... mount resumed>) = 0 [pid 5100] munmap(0x7f138d200000, 138412032 [pid 5099] memfd_create("syzkaller", 0 [pid 5098] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5100] <... munmap resumed>) = 0 [pid 5099] <... memfd_create resumed>) = 5 [pid 5098] <... openat resumed>) = 3 [pid 5098] chdir("./bus" [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5097] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5099] <... mmap resumed>) = 0x7f138d200000 [pid 5098] <... chdir resumed>) = 0 [pid 5097] <... openat resumed>) = 3 [pid 5060] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5098] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5100] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5099] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5097] chdir("./bus" [pid 5100] <... openat resumed>) = 4 [pid 5097] <... chdir resumed>) = 0 [pid 5100] ioctl(4, LOOP_SET_FD, 3 [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5098] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5097] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5098] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5097] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5099] <... write resumed>) = 524288 [pid 5098] <... symlink resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5097] <... symlink resumed>) = 0 [pid 5097] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5098] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... openat resumed>) = 3 [pid 5060] newfstatat(3, "", [pid 5097] <... creat resumed>) = 4 [pid 5097] rename("./bus", "./file2" [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5098] <... creat resumed>) = 4 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5099] munmap(0x7f138d200000, 138412032 [pid 5097] <... rename resumed>) = -1 EEXIST (File exists) [pid 5097] memfd_create("syzkaller", 0 [pid 5098] rename("./bus", "./file2" [pid 5097] <... memfd_create resumed>) = 5 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5098] <... rename resumed>) = -1 EEXIST (File exists) [pid 5097] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... umount2 resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5100] <... ioctl resumed>) = 0 [pid 5099] <... munmap resumed>) = 0 [pid 5098] memfd_create("syzkaller", 0 [pid 5099] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5100] close(3 [pid 5099] close(5 [pid 5098] <... memfd_create resumed>) = 5 [pid 5100] <... close resumed>) = 0 [pid 5099] <... close resumed>) = 0 [pid 5060] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5100] close(4) = 0 [pid 5098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... close resumed>) = 0 [pid 5100] mkdir("./bus", 0777) = 0 [pid 5100] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5099] creat("./file1", 000 [pid 5097] <... write resumed>) = 524288 [pid 5098] <... mmap resumed>) = 0x7f138d200000 [pid 5060] newfstatat(AT_FDCWD, "./4/bus", [ 58.985774][ T5100] loop1: detected capacity change from 0 to 1024 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5097] munmap(0x7f138d200000, 138412032./strace-static-x86_64: Process 5101 attached [pid 5098] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5101 [pid 5099] <... creat resumed>) = 5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5101] set_robust_list(0x555556c07660, 24) = 0 [pid 5099] exit_group(0 [pid 5060] <... openat resumed>) = 4 [pid 5101] chdir("./5" [pid 5060] newfstatat(4, "", [pid 5101] <... chdir resumed>) = 0 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5099] <... exit_group resumed>) = ? [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5101] <... prctl resumed>) = 0 [pid 5101] setpgid(0, 0 [pid 5100] <... mount resumed>) = 0 [pid 5099] +++ exited with 0 +++ [pid 5098] <... write resumed>) = 524288 [pid 5097] <... munmap resumed>) = 0 [pid 5101] <... setpgid resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5060] getdents64(4, [pid 5100] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5100] <... openat resumed>) = 3 [pid 5097] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5100] chdir("./bus" [pid 5097] close(5 [pid 5100] <... chdir resumed>) = 0 [pid 5097] <... close resumed>) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5061] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5100] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5097] creat("./file1", 000 [pid 5061] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5098] munmap(0x7f138d200000, 138412032 [pid 5061] <... openat resumed>) = 3 [pid 5060] getdents64(4, [pid 5061] newfstatat(3, "", [pid 5101] <... openat resumed>) = 3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5101] write(3, "1000", 4 [pid 5100] <... symlink resumed>) = 0 [pid 5098] <... munmap resumed>) = 0 [pid 5097] <... creat resumed>) = 5 [pid 5061] getdents64(3, [pid 5060] close(4 [pid 5100] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5097] exit_group(0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... close resumed>) = 0 [pid 5101] <... write resumed>) = 4 [pid 5098] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5097] <... exit_group resumed>) = ? [pid 5061] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] rmdir("./4/bus" [pid 5101] close(3 [pid 5100] <... creat resumed>) = 4 [pid 5098] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5097] +++ exited with 0 +++ [pid 5061] <... umount2 resumed>) = 0 [pid 5101] <... close resumed>) = 0 [pid 5100] rename("./bus", "./file2" [pid 5098] close(5 [pid 5060] <... rmdir resumed>) = 0 [pid 5101] symlink("/dev/binderfs", "./binderfs" [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5100] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5101] <... symlink resumed>) = 0 [pid 5100] memfd_create("syzkaller", 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... restart_syscall resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./5/bus", [pid 5060] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5100] <... memfd_create resumed>) = 5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5101] memfd_create("syzkaller", 0 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5100] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5098] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5056] newfstatat(3, "", [pid 5061] newfstatat(4, "", [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, [pid 5100] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] getdents64(4, [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5101] <... memfd_create resumed>) = 3 [pid 5098] creat("./file1", 000 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] unlink("./4/binderfs" [pid 5101] <... mmap resumed>) = 0x7f138d200000 [pid 5098] <... creat resumed>) = 5 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... unlink resumed>) = 0 [pid 5098] exit_group(0 [pid 5060] getdents64(3, [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5101] 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"..., 524288 [pid 5100] <... write resumed>) = 524288 [pid 5098] <... exit_group resumed>) = ? [pid 5061] close(4 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5061] rmdir("./5/bus") = 0 [pid 5061] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./5/binderfs") = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5101] <... write resumed>) = 524288 [pid 5061] rmdir("./5") = 0 [pid 5061] mkdir("./6", 0777 [pid 5056] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5100] munmap(0x7f138d200000, 138412032 [pid 5061] <... mkdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5100] <... munmap resumed>) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] newfstatat(AT_FDCWD, "./4/bus", [pid 5100] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5056] umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5100] close(5 [pid 5061] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5101] munmap(0x7f138d200000, 138412032 [pid 5100] <... close resumed>) = 0 [pid 5098] +++ exited with 0 +++ [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] close(3 [pid 5056] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5101] <... munmap resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] <... openat resumed>) = 4 [pid 5060] rmdir("./4" [pid 5056] newfstatat(4, "", [pid 5059] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] getdents64(4, [pid 5059] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5101] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] mkdir("./5", 0777 [pid 5059] newfstatat(3, "", [pid 5056] getdents64(4, [pid 5101] <... openat resumed>) = 4 [pid 5060] <... mkdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5101] ioctl(4, LOOP_SET_FD, 3 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5100] creat("./file1", 000 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] close(4 [pid 5059] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./4/bus" [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] <... rmdir resumed>) = 0 [pid 5056] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5100] <... creat resumed>) = 5 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./4/binderfs") = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5100] exit_group(0 [pid 5056] <... close resumed>) = 0 [pid 5100] <... exit_group resumed>) = ? [pid 5056] rmdir("./4" [pid 5100] +++ exited with 0 +++ [pid 5056] <... rmdir resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5100, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] mkdir("./5", 0777 [pid 5101] <... ioctl resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5057] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5101] close(3 [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5101] <... close resumed>) = 0 [pid 5101] close(4 [pid 5057] newfstatat(3, "", [pid 5056] <... openat resumed>) = 3 [pid 5101] <... close resumed>) = 0 [pid 5101] mkdir("./bus", 0777 [pid 5059] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... ioctl resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./5/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] close(3 [pid 5101] <... mkdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5102 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./5/bus") = 0 ./strace-static-x86_64: Process 5102 attached [pid 5057] getdents64(3, [pid 5102] set_robust_list(0x555556c07660, 24 [pid 5059] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5101] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5057] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5102] <... set_robust_list resumed>) = 0 [pid 5059] unlink("./5/binderfs" [pid 5102] chdir("./5" [pid 5059] <... unlink resumed>) = 0 [pid 5102] <... chdir resumed>) = 0 [pid 5059] getdents64(3, [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5102] <... prctl resumed>) = 0 [pid 5059] close(3) = 0 [pid 5059] rmdir("./5" [pid 5102] setpgid(0, 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5102] <... setpgid resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5059] mkdir("./6", 0777 [pid 5060] close(3 [pid 5059] <... mkdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [ 59.177876][ T5101] loop2: detected capacity change from 0 to 1024 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] close(3 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... close resumed>) = 0 [pid 5102] <... openat resumed>) = 3 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5102] write(3, "1000", 4) = 4 [pid 5059] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5103 attached [pid 5102] close(3 [pid 5059] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5104 attached [pid 5103] set_robust_list(0x555556c07660, 24 [pid 5102] <... close resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5103 [pid 5102] symlink("/dev/binderfs", "./binderfs" [pid 5104] set_robust_list(0x555556c07660, 24 [pid 5102] <... symlink resumed>) = 0 [pid 5104] <... set_robust_list resumed>) = 0 [pid 5102] memfd_create("syzkaller", 0 [pid 5104] chdir("./5" [pid 5057] <... umount2 resumed>) = 0 [pid 5103] <... set_robust_list resumed>) = 0 [pid 5103] chdir("./6" [pid 5102] <... memfd_create resumed>) = 3 [pid 5104] <... chdir resumed>) = 0 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5103] <... chdir resumed>) = 0 [pid 5102] <... mmap resumed>) = 0x7f138d200000 [pid 5104] <... prctl resumed>) = 0 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5104] setpgid(0, 0 [pid 5103] <... prctl resumed>) = 0 [pid 5102] 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"..., 524288 [pid 5101] <... mount resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5104 [pid 5101] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5057] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5103] setpgid(0, 0 [pid 5101] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5104] <... setpgid resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./5/bus", [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5103] <... setpgid resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5104] <... openat resumed>) = 3 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5101] chdir("./bus" [pid 5057] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5104] write(3, "1000", 4 [pid 5103] <... openat resumed>) = 3 [pid 5104] <... write resumed>) = 4 [pid 5101] <... chdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5104] close(3 [pid 5102] <... write resumed>) = 524288 [pid 5101] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5104] <... close resumed>) = 0 [pid 5104] symlink("/dev/binderfs", "./binderfs" [pid 5103] write(3, "1000", 4 [pid 5104] <... symlink resumed>) = 0 [pid 5103] <... write resumed>) = 4 [pid 5104] memfd_create("syzkaller", 0 [pid 5103] close(3 [pid 5101] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... openat resumed>) = 4 [pid 5104] <... memfd_create resumed>) = 3 [pid 5103] <... close resumed>) = 0 [pid 5101] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5103] symlink("/dev/binderfs", "./binderfs" [pid 5104] <... mmap resumed>) = 0x7f138d200000 [pid 5103] <... symlink resumed>) = 0 [pid 5057] getdents64(4, [pid 5103] memfd_create("syzkaller", 0) = 3 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5057] getdents64(4, [pid 5101] <... symlink resumed>) = 0 [pid 5104] 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"..., 524288 [pid 5101] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] <... ioctl resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5102] munmap(0x7f138d200000, 138412032 [pid 5057] close(4 [pid 5102] <... munmap resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] rmdir("./5/bus" [pid 5103] 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"..., 524288 [pid 5102] <... openat resumed>) = 4 [pid 5102] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./5/binderfs" [pid 5104] <... write resumed>) = 524288 [pid 5101] <... creat resumed>) = 4 [pid 5059] close(3 [pid 5057] <... unlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 5105 attached [pid 5103] <... write resumed>) = 524288 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5105 [pid 5105] set_robust_list(0x555556c07660, 24 [pid 5104] munmap(0x7f138d200000, 138412032 [pid 5102] close(3 [pid 5101] rename("./bus", "./file2" [pid 5057] close(3 [pid 5105] <... set_robust_list resumed>) = 0 [pid 5104] <... munmap resumed>) = 0 [pid 5103] munmap(0x7f138d200000, 138412032 [pid 5105] chdir("./6" [pid 5104] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5103] <... munmap resumed>) = 0 [pid 5057] <... close resumed>) = 0 [ 59.307018][ T5102] loop0: detected capacity change from 0 to 1024 [pid 5105] <... chdir resumed>) = 0 [pid 5104] <... openat resumed>) = 4 [pid 5103] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5102] <... close resumed>) = 0 [pid 5101] <... rename resumed>) = -1 EEXIST (File exists) [pid 5057] rmdir("./5" [pid 5102] close(4) = 0 [pid 5102] mkdir("./bus", 0777 [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5104] ioctl(4, LOOP_SET_FD, 3 [pid 5101] memfd_create("syzkaller", 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] mkdir("./6", 0777 [pid 5101] <... memfd_create resumed>) = 5 [pid 5105] <... prctl resumed>) = 0 [pid 5103] <... openat resumed>) = 4 [pid 5102] <... mkdir resumed>) = 0 [pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5101] <... mmap resumed>) = 0x7f138d200000 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5103] ioctl(4, LOOP_SET_FD, 3 [pid 5105] setpgid(0, 0 [pid 5101] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5057] <... openat resumed>) = 3 [pid 5105] <... setpgid resumed>) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5102] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5105] write(3, "1000", 4 [pid 5102] <... mount resumed>) = 0 [pid 5102] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5105] <... write resumed>) = 4 [pid 5102] chdir("./bus" [pid 5105] close(3 [pid 5102] <... chdir resumed>) = 0 [pid 5105] <... close resumed>) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5105] symlink("/dev/binderfs", "./binderfs" [pid 5102] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5105] <... symlink resumed>) = 0 [pid 5102] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5105] memfd_create("syzkaller", 0 [pid 5102] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5105] <... memfd_create resumed>) = 3 [pid 5104] <... ioctl resumed>) = 0 [pid 5104] close(3) = 0 [pid 5104] close(4 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5104] <... close resumed>) = 0 [pid 5105] <... mmap resumed>) = 0x7f138d200000 [pid 5104] mkdir("./bus", 0777 [pid 5105] 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"..., 524288 [pid 5104] <... mkdir resumed>) = 0 [pid 5101] <... write resumed>) = 524288 [pid 5103] <... ioctl resumed>) = 0 [pid 5103] close(3) = 0 [pid 5103] close(4) = 0 [pid 5103] mkdir("./bus", 0777) = 0 [pid 5104] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5103] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5102] <... creat resumed>) = 4 [pid 5101] munmap(0x7f138d200000, 138412032 [pid 5057] <... ioctl resumed>) = 0 [pid 5102] rename("./bus", "./file2" [pid 5101] <... munmap resumed>) = 0 [pid 5057] close(3) = 0 [ 59.360253][ T5104] loop4: detected capacity change from 0 to 1024 [ 59.368449][ T5103] loop5: detected capacity change from 0 to 1024 [pid 5102] <... rename resumed>) = -1 EEXIST (File exists) [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5102] memfd_create("syzkaller", 0 [pid 5101] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5102] <... memfd_create resumed>) = 5 [pid 5104] <... mount resumed>) = 0 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5101] <... openat resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 5106 attached [pid 5104] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5102] <... mmap resumed>) = 0x7f138d200000 [pid 5101] close(5 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5106 [pid 5106] set_robust_list(0x555556c07660, 24 [pid 5102] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5106] <... set_robust_list resumed>) = 0 [pid 5105] <... write resumed>) = 524288 [pid 5104] <... openat resumed>) = 3 [pid 5104] chdir("./bus" [pid 5106] chdir("./6" [pid 5104] <... chdir resumed>) = 0 [pid 5104] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5106] <... chdir resumed>) = 0 [pid 5104] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5104] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5106] <... prctl resumed>) = 0 [pid 5106] setpgid(0, 0 [pid 5105] munmap(0x7f138d200000, 138412032 [pid 5104] <... symlink resumed>) = 0 [pid 5106] <... setpgid resumed>) = 0 [pid 5105] <... munmap resumed>) = 0 [pid 5104] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5101] <... close resumed>) = 0 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5103] <... mount resumed>) = 0 [pid 5102] <... write resumed>) = 524288 [pid 5101] creat("./file1", 000 [pid 5106] <... openat resumed>) = 3 [pid 5105] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5103] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5106] write(3, "1000", 4 [pid 5105] <... openat resumed>) = 4 [pid 5103] <... openat resumed>) = 3 [pid 5106] <... write resumed>) = 4 [pid 5104] <... creat resumed>) = 4 [pid 5106] close(3 [pid 5104] rename("./bus", "./file2" [pid 5106] <... close resumed>) = 0 [pid 5105] ioctl(4, LOOP_SET_FD, 3 [pid 5103] chdir("./bus" [pid 5106] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5105] <... ioctl resumed>) = 0 [pid 5101] <... creat resumed>) = 5 [pid 5103] <... chdir resumed>) = 0 [pid 5103] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5104] <... rename resumed>) = -1 EEXIST (File exists) [pid 5103] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5101] exit_group(0 [pid 5106] memfd_create("syzkaller", 0 [pid 5102] munmap(0x7f138d200000, 138412032 [pid 5101] <... exit_group resumed>) = ? [pid 5103] <... symlink resumed>) = 0 [pid 5102] <... munmap resumed>) = 0 [pid 5104] memfd_create("syzkaller", 0 [pid 5103] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5101] +++ exited with 0 +++ [pid 5106] <... memfd_create resumed>) = 3 [pid 5104] <... memfd_create resumed>) = 5 [pid 5103] <... creat resumed>) = 4 [pid 5102] close(5 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5103] rename("./bus", "./file2" [pid 5104] <... mmap resumed>) = 0x7f138d200000 [pid 5104] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5106] <... mmap resumed>) = 0x7f138d200000 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5101, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5102] <... close resumed>) = 0 [pid 5106] 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"..., 524288 [pid 5058] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5105] close(3 [pid 5103] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5105] <... close resumed>) = 0 [pid 5103] memfd_create("syzkaller", 0 [pid 5105] close(4 [pid 5103] <... memfd_create resumed>) = 5 [pid 5058] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5105] <... close resumed>) = 0 [pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5105] mkdir("./bus", 0777 [pid 5103] <... mmap resumed>) = 0x7f138d200000 [pid 5105] <... mkdir resumed>) = 0 [pid 5103] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] <... openat resumed>) = 3 [pid 5102] creat("./file1", 000 [pid 5058] newfstatat(3, "", [pid 5106] <... write resumed>) = 524288 [pid 5105] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5106] munmap(0x7f138d200000, 138412032 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, [pid 5106] <... munmap resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [ 59.477206][ T5105] loop3: detected capacity change from 0 to 1024 [pid 5106] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5102] <... creat resumed>) = 5 [pid 5058] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5106] <... openat resumed>) = 4 [pid 5106] ioctl(4, LOOP_SET_FD, 3 [pid 5104] <... write resumed>) = 524288 [pid 5102] exit_group(0 [pid 5105] <... mount resumed>) = 0 [pid 5102] <... exit_group resumed>) = ? [pid 5058] <... umount2 resumed>) = 0 [pid 5105] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5102] +++ exited with 0 +++ [pid 5105] <... openat resumed>) = 3 [pid 5104] munmap(0x7f138d200000, 138412032 [pid 5105] chdir("./bus" [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5105] <... chdir resumed>) = 0 [pid 5104] <... munmap resumed>) = 0 [pid 5103] <... write resumed>) = 524288 [pid 5058] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5104] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5105] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5104] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5105] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] newfstatat(AT_FDCWD, "./5/bus", [pid 5056] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5105] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5104] close(5 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5058] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(3, "", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] getdents64(3, [pid 5058] <... openat resumed>) = 4 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] newfstatat(4, "", [pid 5056] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5105] <... symlink resumed>) = 0 [pid 5104] <... close resumed>) = 0 [pid 5103] munmap(0x7f138d200000, 138412032 [pid 5106] <... ioctl resumed>) = 0 [pid 5105] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5103] <... munmap resumed>) = 0 [pid 5058] getdents64(4, [pid 5106] close(3 [pid 5105] <... creat resumed>) = 4 [pid 5103] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5106] <... close resumed>) = 0 [pid 5104] creat("./file1", 000 [pid 5103] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./5/bus" [pid 5106] close(4 [pid 5058] <... rmdir resumed>) = 0 [pid 5106] <... close resumed>) = 0 [pid 5103] close(5 [pid 5106] mkdir("./bus", 0777 [pid 5103] <... close resumed>) = 0 [pid 5106] <... mkdir resumed>) = 0 [pid 5058] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = 0 [pid 5106] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./5/binderfs") = 0 [pid 5104] <... creat resumed>) = 5 [pid 5058] getdents64(3, [pid 5056] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5105] rename("./bus", "./file2" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5104] exit_group(0 [pid 5103] creat("./file1", 000 [pid 5058] close(3 [pid 5056] newfstatat(AT_FDCWD, "./5/bus", [pid 5105] <... rename resumed>) = -1 EEXIST (File exists) [pid 5104] <... exit_group resumed>) = ? [pid 5058] <... close resumed>) = 0 [ 59.540986][ T5106] loop1: detected capacity change from 0 to 1024 [pid 5105] memfd_create("syzkaller", 0 [pid 5058] rmdir("./5" [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5105] <... memfd_create resumed>) = 5 [pid 5104] +++ exited with 0 +++ [pid 5103] <... creat resumed>) = 5 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5104, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", [pid 5058] mkdir("./6", 0777 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] getdents64(4, [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5103] exit_group(0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5105] <... mmap resumed>) = 0x7f138d200000 [pid 5103] <... exit_group resumed>) = ? [pid 5058] <... openat resumed>) = 3 [pid 5056] getdents64(4, [pid 5060] <... restart_syscall resumed>) = 0 [pid 5103] +++ exited with 0 +++ [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5056] close(4) = 0 [pid 5056] rmdir("./5/bus" [pid 5061] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... openat resumed>) = 3 [pid 5056] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5061] newfstatat(3, "", [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] unlink("./5/binderfs" [pid 5105] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] getdents64(3, [pid 5056] <... unlink resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5105] <... write resumed>) = 524288 [pid 5060] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... close resumed>) = 0 [pid 5061] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5056] rmdir("./5" [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5060] getdents64(3, [pid 5056] mkdir("./6", 0777 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... mkdir resumed>) = 0 [pid 5060] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5105] munmap(0x7f138d200000, 138412032 [pid 5106] <... mount resumed>) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5106] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5105] <... munmap resumed>) = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5106] chdir("./bus" [pid 5061] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = 0 [pid 5106] <... chdir resumed>) = 0 [pid 5105] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5106] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5105] close(5 [pid 5061] newfstatat(AT_FDCWD, "./6/bus", [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5106] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5106] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(AT_FDCWD, "./5/bus", [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5106] <... symlink resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5061] newfstatat(4, "", [pid 5106] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(4, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5105] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5105] creat("./file1", 000 [pid 5061] getdents64(4, [pid 5060] <... openat resumed>) = 4 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] newfstatat(4, "", [pid 5106] <... creat resumed>) = 4 [pid 5061] close(4 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5105] <... creat resumed>) = 5 [pid 5061] <... close resumed>) = 0 [pid 5060] getdents64(4, [pid 5106] rename("./bus", "./file2" [pid 5061] rmdir("./6/bus") = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4) = 0 [pid 5105] exit_group(0 [pid 5060] rmdir("./5/bus" [pid 5106] <... rename resumed>) = -1 EEXIST (File exists) [pid 5105] <... exit_group resumed>) = ? [pid 5061] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5106] memfd_create("syzkaller", 0 [pid 5058] close(3 [pid 5106] <... memfd_create resumed>) = 5 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... close resumed>) = 0 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5105] +++ exited with 0 +++ [pid 5061] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5060] <... rmdir resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5106] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] close(3./strace-static-x86_64: Process 5107 attached [pid 5106] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] unlink("./6/binderfs" [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] <... close resumed>) = 0 [pid 5107] set_robust_list(0x555556c07660, 24 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5107] <... set_robust_list resumed>) = 0 [pid 5059] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 5108 attached [pid 5107] chdir("./6" [pid 5061] <... unlink resumed>) = 0 [pid 5060] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5107 [pid 5107] <... chdir resumed>) = 0 [pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5108] set_robust_list(0x555556c07660, 24 [pid 5107] <... prctl resumed>) = 0 [pid 5108] <... set_robust_list resumed>) = 0 [pid 5059] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5108 [pid 5107] setpgid(0, 0 [pid 5108] chdir("./6" [pid 5107] <... setpgid resumed>) = 0 [pid 5061] getdents64(3, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5059] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] close(3 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5108] <... chdir resumed>) = 0 [pid 5107] <... openat resumed>) = 3 [pid 5106] <... write resumed>) = 524288 [pid 5061] <... close resumed>) = 0 [pid 5060] unlink("./5/binderfs" [pid 5059] newfstatat(3, "", [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5107] write(3, "1000", 4 [pid 5060] <... unlink resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5108] <... prctl resumed>) = 0 [pid 5107] <... write resumed>) = 4 [pid 5059] getdents64(3, [pid 5108] setpgid(0, 0 [pid 5107] close(3 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] rmdir("./6" [pid 5060] getdents64(3, [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3 [pid 5061] mkdir("./7", 0777 [pid 5060] <... close resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] rmdir("./5" [pid 5108] <... setpgid resumed>) = 0 [pid 5107] <... close resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] mkdir("./6", 0777 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5107] symlink("/dev/binderfs", "./binderfs" [pid 5106] munmap(0x7f138d200000, 138412032 [pid 5107] <... symlink resumed>) = 0 [pid 5106] <... munmap resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... mkdir resumed>) = 0 [pid 5108] <... openat resumed>) = 3 [pid 5107] memfd_create("syzkaller", 0 [pid 5106] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] <... openat resumed>) = 3 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... umount2 resumed>) = 0 [pid 5108] write(3, "1000", 4 [pid 5107] <... memfd_create resumed>) = 3 [pid 5106] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] <... openat resumed>) = 3 [pid 5108] <... write resumed>) = 4 [pid 5107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5106] close(5 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5107] <... mmap resumed>) = 0x7f138d200000 [pid 5108] close(3 [pid 5059] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5108] <... close resumed>) = 0 [pid 5107] 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"..., 524288 [pid 5106] <... close resumed>) = 0 [pid 5108] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5106] creat("./file1", 000 [pid 5059] newfstatat(AT_FDCWD, "./6/bus", [pid 5108] <... symlink resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5108] memfd_create("syzkaller", 0 [pid 5107] <... write resumed>) = 524288 [pid 5106] <... creat resumed>) = 5 [pid 5108] <... memfd_create resumed>) = 3 [pid 5107] munmap(0x7f138d200000, 138412032 [pid 5106] exit_group(0 [pid 5059] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5106] <... exit_group resumed>) = ? [pid 5108] <... mmap resumed>) = 0x7f138d200000 [pid 5107] <... munmap resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5107] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] newfstatat(4, "", [pid 5108] 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"..., 524288 [pid 5107] <... openat resumed>) = 4 [pid 5106] +++ exited with 0 +++ [pid 5061] <... ioctl resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5107] ioctl(4, LOOP_SET_FD, 3 [pid 5061] close(3 [pid 5059] getdents64(4, [pid 5057] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5108] <... write resumed>) = 524288 [pid 5061] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", [pid 5059] close(4) = 0 [pid 5059] rmdir("./6/bus" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5108] munmap(0x7f138d200000, 138412032./strace-static-x86_64: Process 5109 attached [pid 5107] <... ioctl resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] getdents64(3, [pid 5109] set_robust_list(0x555556c07660, 24 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5109] <... set_robust_list resumed>) = 0 [pid 5108] <... munmap resumed>) = 0 [pid 5107] close(3 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5109 [pid 5059] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5107] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5107] close(4 [pid 5059] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5108] <... openat resumed>) = 4 [pid 5107] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5107] mkdir("./bus", 0777 [pid 5059] unlink("./6/binderfs" [pid 5108] ioctl(4, LOOP_SET_FD, 3 [pid 5109] chdir("./7" [pid 5108] <... ioctl resumed>) = 0 [pid 5107] <... mkdir resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5109] <... chdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5060] close(3 [pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5107] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5109] <... prctl resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5109] setpgid(0, 0 [pid 5059] close(3 [pid 5109] <... setpgid resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./6/bus", [pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5108] close(3 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] rmdir("./6" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5110 attached [pid 5109] <... openat resumed>) = 3 [pid 5108] <... close resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5110] set_robust_list(0x555556c07660, 24 [pid 5109] write(3, "1000", 4 [pid 5108] close(4 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5110 [pid 5059] mkdir("./7", 0777 [pid 5057] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5110] <... set_robust_list resumed>) = 0 [pid 5109] <... write resumed>) = 4 [pid 5108] <... close resumed>) = 0 [pid 5110] chdir("./6" [pid 5109] close(3 [pid 5108] mkdir("./bus", 0777 [pid 5059] <... mkdir resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5108] <... mkdir resumed>) = 0 [pid 5057] newfstatat(4, "", [pid 5109] <... close resumed>) = 0 [pid 5108] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5109] symlink("/dev/binderfs", "./binderfs" [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5109] <... symlink resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5057] getdents64(4, [pid 5110] <... chdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] close(4 [pid 5110] <... prctl resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5057] <... close resumed>) = 0 [pid 5110] setpgid(0, 0) = 0 [ 59.783072][ T5107] loop2: detected capacity change from 0 to 1024 [ 59.816636][ T5108] loop0: detected capacity change from 0 to 1024 [pid 5057] rmdir("./6/bus" [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] <... rmdir resumed>) = 0 [pid 5110] <... openat resumed>) = 3 [pid 5057] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5109] memfd_create("syzkaller", 0 [pid 5110] write(3, "1000", 4 [pid 5109] <... memfd_create resumed>) = 3 [pid 5107] <... mount resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5110] <... write resumed>) = 4 [pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5107] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5057] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5110] close(3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./6/binderfs") = 0 [pid 5057] getdents64(3, [pid 5110] <... close resumed>) = 0 [pid 5107] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5110] symlink("/dev/binderfs", "./binderfs" [pid 5107] chdir("./bus" [pid 5057] close(3 [pid 5110] <... symlink resumed>) = 0 [pid 5107] <... chdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5110] memfd_create("syzkaller", 0 [pid 5109] <... mmap resumed>) = 0x7f138d200000 [pid 5108] <... mount resumed>) = 0 [pid 5107] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] rmdir("./6" [pid 5110] <... memfd_create resumed>) = 3 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] mkdir("./7", 0777 [pid 5110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5108] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5107] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... mkdir resumed>) = 0 [pid 5110] <... mmap resumed>) = 0x7f138d200000 [pid 5108] <... openat resumed>) = 3 [pid 5107] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5110] 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"..., 524288 [pid 5108] chdir("./bus" [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5108] <... chdir resumed>) = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5107] <... symlink resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5107] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5108] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5109] 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"..., 524288 [pid 5108] <... symlink resumed>) = 0 [pid 5107] <... creat resumed>) = 4 [pid 5108] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5107] rename("./bus", "./file2" [pid 5109] <... write resumed>) = 524288 [pid 5059] <... ioctl resumed>) = 0 [pid 5107] <... rename resumed>) = -1 EEXIST (File exists) [pid 5110] <... write resumed>) = 524288 [pid 5109] munmap(0x7f138d200000, 138412032 [pid 5108] <... creat resumed>) = 4 [pid 5059] close(3 [pid 5057] <... ioctl resumed>) = 0 [pid 5108] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5059] <... close resumed>) = 0 [pid 5110] munmap(0x7f138d200000, 138412032 [pid 5108] memfd_create("syzkaller", 0 [pid 5107] memfd_create("syzkaller", 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5110] <... munmap resumed>) = 0 [pid 5109] <... munmap resumed>) = 0 [pid 5108] <... memfd_create resumed>) = 5 [pid 5107] <... memfd_create resumed>) = 5 [pid 5110] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5057] close(3 [pid 5110] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 5111 attached ) = 0 [pid 5111] set_robust_list(0x555556c07660, 24 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... close resumed>) = 0 [pid 5109] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5108] <... mmap resumed>) = 0x7f138d200000 [pid 5107] <... mmap resumed>) = 0x7f138d200000 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5111] <... set_robust_list resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5111 [pid 5111] chdir("./7" [pid 5109] <... openat resumed>) = 4 [pid 5108] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5107] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288./strace-static-x86_64: Process 5112 attached [pid 5109] ioctl(4, LOOP_SET_FD, 3 [pid 5112] set_robust_list(0x555556c07660, 24 [pid 5111] <... chdir resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5112 [pid 5112] <... set_robust_list resumed>) = 0 [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5112] chdir("./7" [pid 5111] <... prctl resumed>) = 0 [pid 5112] <... chdir resumed>) = 0 [pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5111] setpgid(0, 0 [pid 5108] <... write resumed>) = 524288 [pid 5112] <... prctl resumed>) = 0 [pid 5111] <... setpgid resumed>) = 0 [pid 5109] <... ioctl resumed>) = 0 [pid 5112] setpgid(0, 0 [pid 5110] close(3 [pid 5109] close(3 [pid 5112] <... setpgid resumed>) = 0 [pid 5110] <... close resumed>) = 0 [pid 5109] <... close resumed>) = 0 [pid 5112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5109] close(4 [pid 5112] <... openat resumed>) = 3 [pid 5110] close(4 [pid 5109] <... close resumed>) = 0 [pid 5112] write(3, "1000", 4 [pid 5109] mkdir("./bus", 0777 [pid 5112] <... write resumed>) = 4 [pid 5110] <... close resumed>) = 0 [pid 5109] <... mkdir resumed>) = 0 [pid 5112] close(3 [pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5110] mkdir("./bus", 0777 [pid 5107] <... write resumed>) = 524288 [pid 5112] <... close resumed>) = 0 [pid 5109] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5112] symlink("/dev/binderfs", "./binderfs" [pid 5108] munmap(0x7f138d200000, 138412032 [pid 5112] <... symlink resumed>) = 0 [pid 5110] <... mkdir resumed>) = 0 [pid 5108] <... munmap resumed>) = 0 [pid 5112] memfd_create("syzkaller", 0 [pid 5107] munmap(0x7f138d200000, 138412032 [pid 5112] <... memfd_create resumed>) = 3 [pid 5111] <... openat resumed>) = 3 [pid 5110] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5107] <... munmap resumed>) = 0 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5111] write(3, "1000", 4 [pid 5112] <... mmap resumed>) = 0x7f138d200000 [pid 5111] <... write resumed>) = 4 [pid 5108] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5107] openat(AT_FDCWD, "/dev/loop2", O_RDWR [ 59.937134][ T5110] loop4: detected capacity change from 0 to 1024 [ 59.956029][ T5109] loop5: detected capacity change from 0 to 1024 [pid 5108] close(5 [pid 5107] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5112] 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"..., 524288 [pid 5111] close(3 [pid 5110] <... mount resumed>) = 0 [pid 5111] <... close resumed>) = 0 [pid 5110] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5107] close(5 [pid 5111] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5110] <... openat resumed>) = 3 [pid 5108] <... close resumed>) = 0 [pid 5111] memfd_create("syzkaller", 0 [pid 5110] chdir("./bus" [pid 5112] <... write resumed>) = 524288 [pid 5111] <... memfd_create resumed>) = 3 [pid 5110] <... chdir resumed>) = 0 [pid 5109] <... mount resumed>) = 0 [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5110] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5111] <... mmap resumed>) = 0x7f138d200000 [pid 5110] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5109] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5108] creat("./file1", 000 [pid 5107] <... close resumed>) = 0 [pid 5110] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5109] <... openat resumed>) = 3 [pid 5110] <... symlink resumed>) = 0 [pid 5109] chdir("./bus" [pid 5107] creat("./file1", 000 [pid 5109] <... chdir resumed>) = 0 [pid 5108] <... creat resumed>) = 5 [pid 5108] exit_group(0 [pid 5107] <... creat resumed>) = 5 [pid 5107] exit_group(0 [pid 5108] <... exit_group resumed>) = ? [pid 5107] <... exit_group resumed>) = ? [pid 5110] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5108] +++ exited with 0 +++ [pid 5107] +++ exited with 0 +++ [pid 5112] munmap(0x7f138d200000, 138412032 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5107, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5112] <... munmap resumed>) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5109] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5112] <... openat resumed>) = 4 [pid 5109] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5112] ioctl(4, LOOP_SET_FD, 3 [pid 5058] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5111] 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"..., 524288 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5109] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(3, "", [pid 5110] <... creat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5110] rename("./bus", "./file2" [pid 5058] getdents64(3, [pid 5056] newfstatat(3, "", [pid 5109] <... symlink resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5109] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5110] <... rename resumed>) = -1 EEXIST (File exists) [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5109] <... creat resumed>) = 4 [pid 5056] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5110] memfd_create("syzkaller", 0 [pid 5109] rename("./bus", "./file2" [pid 5111] <... write resumed>) = 524288 [pid 5110] <... memfd_create resumed>) = 5 [pid 5109] <... rename resumed>) = -1 EEXIST (File exists) [pid 5112] <... ioctl resumed>) = 0 [pid 5111] munmap(0x7f138d200000, 138412032 [pid 5110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5109] memfd_create("syzkaller", 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5112] close(3 [pid 5109] <... memfd_create resumed>) = 5 [pid 5110] <... mmap resumed>) = 0x7f138d200000 [pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5112] <... close resumed>) = 0 [pid 5111] <... munmap resumed>) = 0 [pid 5112] close(4) = 0 [pid 5112] mkdir("./bus", 0777) = 0 [pid 5112] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5111] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5110] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] <... umount2 resumed>) = 0 [pid 5111] <... openat resumed>) = 4 [ 60.032905][ T5112] loop1: detected capacity change from 0 to 1024 [pid 5109] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] newfstatat(AT_FDCWD, "./6/bus", [pid 5111] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5109] <... write resumed>) = 524288 [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5112] <... mount resumed>) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./6/bus" [pid 5056] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... rmdir resumed>) = 0 [pid 5112] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5110] <... write resumed>) = 524288 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5112] chdir("./bus" [pid 5058] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5112] <... chdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5112] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5112] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./6/binderfs" [pid 5112] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5109] munmap(0x7f138d200000, 138412032 [pid 5058] <... unlink resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./6/bus", [pid 5111] <... ioctl resumed>) = 0 [pid 5110] munmap(0x7f138d200000, 138412032 [pid 5109] <... munmap resumed>) = 0 [pid 5058] getdents64(3, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5112] <... symlink resumed>) = 0 [pid 5110] <... munmap resumed>) = 0 [pid 5058] close(3 [pid 5112] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5111] close(3 [pid 5110] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5109] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5109] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] rmdir("./6" [pid 5056] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5111] <... close resumed>) = 0 [pid 5110] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5109] close(5 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5111] close(4 [pid 5110] close(5 [pid 5109] <... close resumed>) = 0 [pid 5056] newfstatat(4, "", [pid 5112] <... creat resumed>) = 4 [pid 5058] mkdir("./7", 0777 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] getdents64(4, [pid 5111] <... close resumed>) = 0 [pid 5112] rename("./bus", "./file2" [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5112] <... rename resumed>) = -1 EEXIST (File exists) [pid 5112] memfd_create("syzkaller", 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] getdents64(4, [pid 5112] <... memfd_create resumed>) = 5 [pid 5058] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5109] creat("./file1", 000 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] close(4 [pid 5111] mkdir("./bus", 0777 [pid 5112] <... mmap resumed>) = 0x7f138d200000 [ 60.078147][ T5111] loop3: detected capacity change from 0 to 1024 [pid 5112] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5111] <... mkdir resumed>) = 0 [pid 5110] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5109] <... creat resumed>) = 5 [pid 5109] exit_group(0) = ? [pid 5109] +++ exited with 0 +++ [pid 5056] rmdir("./6/bus" [pid 5111] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5109, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5061] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5110] creat("./file1", 000 [pid 5061] <... openat resumed>) = 3 [pid 5061] newfstatat(3, "", [pid 5056] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5112] <... write resumed>) = 524288 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] getdents64(3, [pid 5058] <... ioctl resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5112] munmap(0x7f138d200000, 138412032 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5112] <... munmap resumed>) = 0 [pid 5110] <... creat resumed>) = 5 [pid 5061] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] unlink("./6/binderfs" [pid 5112] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5110] exit_group(0 [pid 5056] <... unlink resumed>) = 0 [pid 5112] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5111] <... mount resumed>) = 0 [pid 5112] close(5 [pid 5056] getdents64(3, [pid 5112] <... close resumed>) = 0 [pid 5111] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5110] <... exit_group resumed>) = ? [pid 5061] <... umount2 resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5111] <... openat resumed>) = 3 [pid 5111] chdir("./bus" [pid 5110] +++ exited with 0 +++ [pid 5056] <... close resumed>) = 0 [pid 5111] <... chdir resumed>) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5111] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5058] close(3 [pid 5056] rmdir("./6" [pid 5111] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5112] creat("./file1", 000 [pid 5061] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... rmdir resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./7/bus", [pid 5060] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5113 attached [pid 5061] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(3, "", [pid 5113] set_robust_list(0x555556c07660, 24 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5113 [pid 5061] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5113] <... set_robust_list resumed>) = 0 [pid 5112] <... creat resumed>) = 5 [pid 5061] <... openat resumed>) = 4 [pid 5060] getdents64(3, [pid 5056] mkdir("./7", 0777 [pid 5112] exit_group(0 [pid 5111] <... symlink resumed>) = 0 [pid 5061] newfstatat(4, "", [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5113] chdir("./7" [pid 5112] <... exit_group resumed>) = ? [pid 5056] <... mkdir resumed>) = 0 [pid 5113] <... chdir resumed>) = 0 [pid 5112] +++ exited with 0 +++ [pid 5111] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5113] <... prctl resumed>) = 0 [pid 5061] getdents64(4, [pid 5056] <... openat resumed>) = 3 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] getdents64(4, [pid 5057] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5113] setpgid(0, 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5113] <... setpgid resumed>) = 0 [pid 5061] close(4 [pid 5057] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... close resumed>) = 0 [pid 5061] rmdir("./7/bus" [pid 5113] <... openat resumed>) = 3 [pid 5113] write(3, "1000", 4 [pid 5061] <... rmdir resumed>) = 0 [pid 5113] <... write resumed>) = 4 [pid 5061] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5113] close(3) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5113] symlink("/dev/binderfs", "./binderfs" [pid 5061] newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5113] <... symlink resumed>) = 0 [pid 5111] <... creat resumed>) = 4 [pid 5111] rename("./bus", "./file2" [pid 5113] memfd_create("syzkaller", 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5061] unlink("./7/binderfs" [pid 5113] <... memfd_create resumed>) = 3 [pid 5061] <... unlink resumed>) = 0 [pid 5113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5113] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... close resumed>) = 0 [pid 5061] rmdir("./7" [pid 5113] 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"..., 524288 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5111] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] mkdir("./8", 0777 [pid 5060] newfstatat(AT_FDCWD, "./6/bus", [pid 5111] memfd_create("syzkaller", 0) = 5 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5111] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5113] <... write resumed>) = 524288 [pid 5057] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5113] munmap(0x7f138d200000, 138412032 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... openat resumed>) = 4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5113] <... munmap resumed>) = 0 [pid 5111] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... openat resumed>) = 3 [pid 5060] newfstatat(4, "", [pid 5057] newfstatat(AT_FDCWD, "./7/bus", [pid 5113] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5111] <... write resumed>) = 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5113] <... openat resumed>) = 4 [pid 5113] ioctl(4, LOOP_SET_FD, 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5111] munmap(0x7f138d200000, 138412032 [pid 5060] getdents64(4, [pid 5057] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] close(3 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(4, [pid 5057] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5060] close(4 [pid 5057] newfstatat(4, "", [pid 5060] <... close resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] rmdir("./6/bus" [pid 5057] getdents64(4, [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5111] <... munmap resumed>) = 0 [pid 5060] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(4 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./7/bus") = 0 [pid 5060] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5057] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5111] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] unlink("./7/binderfs" [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5111] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] unlink("./6/binderfs" [pid 5113] <... ioctl resumed>) = 0 [pid 5111] close(5 [pid 5060] <... unlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5113] close(3 [pid 5111] <... close resumed>) = 0 [pid 5060] getdents64(3, [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5113] <... close resumed>) = 0 ./strace-static-x86_64: Process 5114 attached [pid 5113] close(4 [pid 5111] creat("./file1", 000 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5114 [pid 5113] <... close resumed>) = 0 [pid 5113] mkdir("./bus", 0777 [pid 5057] <... close resumed>) = 0 [pid 5113] <... mkdir resumed>) = 0 [pid 5060] close(3 [pid 5057] rmdir("./7" [pid 5060] <... close resumed>) = 0 [pid 5114] set_robust_list(0x555556c07660, 24 [pid 5057] <... rmdir resumed>) = 0 [pid 5114] <... set_robust_list resumed>) = 0 [pid 5113] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] rmdir("./6" [pid 5057] mkdir("./8", 0777 [pid 5114] chdir("./7" [pid 5113] <... mount resumed>) = 0 [pid 5111] <... creat resumed>) = 5 [pid 5060] <... rmdir resumed>) = 0 [pid 5114] <... chdir resumed>) = 0 [pid 5113] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5057] <... mkdir resumed>) = 0 [pid 5111] exit_group(0 [pid 5060] mkdir("./7", 0777 [pid 5113] <... openat resumed>) = 3 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5113] chdir("./bus" [pid 5111] <... exit_group resumed>) = ? [pid 5060] <... mkdir resumed>) = 0 [pid 5114] <... prctl resumed>) = 0 [pid 5113] <... chdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5114] setpgid(0, 0 [pid 5113] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5111] +++ exited with 0 +++ [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5114] <... setpgid resumed>) = 0 [pid 5113] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... openat resumed>) = 3 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5113] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5114] <... openat resumed>) = 3 [pid 5113] <... symlink resumed>) = 0 [pid 5059] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5114] write(3, "1000", 4 [pid 5113] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5114] <... write resumed>) = 4 [pid 5059] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5114] close(3 [pid 5059] <... openat resumed>) = 3 [pid 5114] <... close resumed>) = 0 [pid 5059] newfstatat(3, "", [pid 5114] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5114] <... symlink resumed>) = 0 [ 60.273172][ T5113] loop2: detected capacity change from 0 to 1024 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5114] memfd_create("syzkaller", 0 [pid 5059] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5114] <... memfd_create resumed>) = 3 [pid 5113] <... creat resumed>) = 4 [pid 5061] <... ioctl resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5113] rename("./bus", "./file2" [pid 5057] <... ioctl resumed>) = 0 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5113] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] close(3 [pid 5057] close(3 [pid 5114] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... close resumed>) = 0 [pid 5113] memfd_create("syzkaller", 0) = 5 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] close(3) = 0 [pid 5114] 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"..., 524288 [pid 5113] <... mmap resumed>) = 0x7f138d200000 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5115 [pid 5059] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 5117 attached [pid 5117] set_robust_list(0x555556c07660, 24./strace-static-x86_64: Process 5116 attached ./strace-static-x86_64: Process 5115 attached ) = 0 [pid 5114] <... write resumed>) = 524288 [pid 5113] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5117 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5116 [pid 5117] chdir("./7") = 0 [pid 5115] set_robust_list(0x555556c07660, 24 [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5116] set_robust_list(0x555556c07660, 24 [pid 5117] <... prctl resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5116] <... set_robust_list resumed>) = 0 [pid 5115] <... set_robust_list resumed>) = 0 [pid 5117] setpgid(0, 0 [pid 5115] chdir("./8" [pid 5059] newfstatat(AT_FDCWD, "./7/bus", [pid 5116] chdir("./8" [pid 5115] <... chdir resumed>) = 0 [pid 5117] <... setpgid resumed>) = 0 [pid 5115] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5115] <... prctl resumed>) = 0 [pid 5116] <... chdir resumed>) = 0 [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5115] setpgid(0, 0 [pid 5059] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5117] <... openat resumed>) = 3 [pid 5115] <... setpgid resumed>) = 0 [pid 5114] munmap(0x7f138d200000, 138412032 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5117] write(3, "1000", 4 [pid 5114] <... munmap resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5117] <... write resumed>) = 4 [pid 5059] <... openat resumed>) = 4 [pid 5117] close(3 [pid 5059] newfstatat(4, "", [pid 5117] <... close resumed>) = 0 [pid 5117] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5117] <... symlink resumed>) = 0 [pid 5059] getdents64(4, [pid 5116] setpgid(0, 0 [pid 5117] memfd_create("syzkaller", 0 [pid 5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5116] <... setpgid resumed>) = 0 [pid 5117] <... memfd_create resumed>) = 3 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5113] <... write resumed>) = 524288 [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5115] <... openat resumed>) = 3 [pid 5113] munmap(0x7f138d200000, 138412032 [pid 5059] getdents64(4, [pid 5114] <... openat resumed>) = 4 [pid 5114] ioctl(4, LOOP_SET_FD, 3 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5116] <... openat resumed>) = 3 [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5115] write(3, "1000", 4 [pid 5113] <... munmap resumed>) = 0 [pid 5116] write(3, "1000", 4 [pid 5117] <... mmap resumed>) = 0x7f138d200000 [pid 5115] <... write resumed>) = 4 [pid 5113] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5116] <... write resumed>) = 4 [pid 5117] 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"..., 524288 [pid 5115] close(3 [pid 5113] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] close(4 [pid 5116] close(3 [pid 5115] <... close resumed>) = 0 [pid 5115] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... close resumed>) = 0 [pid 5115] <... symlink resumed>) = 0 [pid 5113] close(5 [pid 5059] rmdir("./7/bus" [pid 5114] <... ioctl resumed>) = 0 [pid 5116] <... close resumed>) = 0 [pid 5115] memfd_create("syzkaller", 0 [pid 5113] <... close resumed>) = 0 [pid 5116] symlink("/dev/binderfs", "./binderfs" [pid 5114] close(3 [pid 5059] <... rmdir resumed>) = 0 [pid 5114] <... close resumed>) = 0 [pid 5059] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5114] close(4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5116] <... symlink resumed>) = 0 [pid 5115] <... memfd_create resumed>) = 3 [pid 5116] memfd_create("syzkaller", 0 [pid 5115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5116] <... memfd_create resumed>) = 3 [pid 5115] <... mmap resumed>) = 0x7f138d200000 [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5114] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5114] mkdir("./bus", 0777 [pid 5116] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5116] 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"..., 524288 [pid 5117] <... write resumed>) = 524288 [pid 5114] <... mkdir resumed>) = 0 [pid 5059] unlink("./7/binderfs" [pid 5113] creat("./file1", 000 [pid 5059] <... unlink resumed>) = 0 [pid 5114] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] getdents64(3, [pid 5115] 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"..., 524288 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5113] <... creat resumed>) = 5 [pid 5059] rmdir("./7" [pid 5117] munmap(0x7f138d200000, 138412032 [pid 5113] exit_group(0 [pid 5059] <... rmdir resumed>) = 0 [pid 5117] <... munmap resumed>) = 0 [pid 5114] <... mount resumed>) = 0 [pid 5113] <... exit_group resumed>) = ? [ 60.431764][ T5114] loop0: detected capacity change from 0 to 1024 [pid 5059] mkdir("./8", 0777 [pid 5117] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5115] <... write resumed>) = 524288 [pid 5114] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5113] +++ exited with 0 +++ [pid 5114] chdir("./bus" [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5113, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5117] <... openat resumed>) = 4 [pid 5059] <... mkdir resumed>) = 0 [pid 5114] <... chdir resumed>) = 0 [pid 5117] ioctl(4, LOOP_SET_FD, 3 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5116] <... write resumed>) = 524288 [pid 5115] munmap(0x7f138d200000, 138412032 [pid 5058] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", [pid 5115] <... munmap resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5116] munmap(0x7f138d200000, 138412032 [pid 5058] getdents64(3, [pid 5116] <... munmap resumed>) = 0 [pid 5117] <... ioctl resumed>) = 0 [pid 5115] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5114] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5117] close(3 [pid 5115] <... openat resumed>) = 4 [pid 5114] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... openat resumed>) = 3 [pid 5116] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5115] ioctl(4, LOOP_SET_FD, 3 [pid 5116] <... openat resumed>) = 4 [pid 5117] <... close resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5117] close(4 [pid 5114] <... symlink resumed>) = 0 [pid 5117] <... close resumed>) = 0 [pid 5116] ioctl(4, LOOP_SET_FD, 3 [pid 5117] mkdir("./bus", 0777 [pid 5114] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5115] <... ioctl resumed>) = 0 [pid 5116] <... ioctl resumed>) = 0 [pid 5117] <... mkdir resumed>) = 0 [pid 5117] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5115] close(3 [pid 5114] <... creat resumed>) = 4 [pid 5115] <... close resumed>) = 0 [pid 5115] close(4) = 0 [pid 5115] mkdir("./bus", 0777) = 0 [pid 5114] rename("./bus", "./file2" [pid 5116] close(3) = 0 [pid 5114] <... rename resumed>) = -1 EEXIST (File exists) [pid 5116] close(4) = 0 [pid 5116] mkdir("./bus", 0777) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5116] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5117] <... mount resumed>) = 0 [pid 5114] memfd_create("syzkaller", 0 [pid 5058] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5115] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5117] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5115] <... mount resumed>) = 0 [pid 5114] <... memfd_create resumed>) = 5 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./7/bus", [pid 5117] <... openat resumed>) = 3 [ 60.496080][ T5117] loop4: detected capacity change from 0 to 1024 [ 60.510265][ T5115] loop5: detected capacity change from 0 to 1024 [ 60.519883][ T5116] loop1: detected capacity change from 0 to 1024 [pid 5115] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5115] <... openat resumed>) = 3 [pid 5117] chdir("./bus" [pid 5115] chdir("./bus" [pid 5114] <... mmap resumed>) = 0x7f138d200000 [pid 5058] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5117] <... chdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5117] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5116] <... mount resumed>) = 0 [pid 5117] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5115] <... chdir resumed>) = 0 [pid 5114] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] <... openat resumed>) = 4 [pid 5115] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5117] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5116] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5115] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5116] <... openat resumed>) = 3 [pid 5115] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5116] chdir("./bus") = 0 [pid 5115] <... symlink resumed>) = 0 [pid 5059] close(3 [pid 5058] newfstatat(4, "", [pid 5116] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5115] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5116] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] <... symlink resumed>) = 0 [pid 5058] getdents64(4, [pid 5116] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5115] <... creat resumed>) = 4 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5116] <... symlink resumed>) = 0 [pid 5117] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5116] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5115] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5115] memfd_create("syzkaller", 0) = 5 [pid 5115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5117] <... creat resumed>) = 4 [pid 5115] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5114] <... write resumed>) = 524288 [pid 5058] getdents64(4, [pid 5117] rename("./bus", "./file2" [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5118 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5116] <... creat resumed>) = 4 ./strace-static-x86_64: Process 5118 attached [pid 5116] rename("./bus", "./file2" [pid 5058] close(4 [pid 5118] set_robust_list(0x555556c07660, 24 [pid 5058] <... close resumed>) = 0 [pid 5118] <... set_robust_list resumed>) = 0 [pid 5116] <... rename resumed>) = -1 EEXIST (File exists) [pid 5117] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] rmdir("./7/bus" [pid 5117] memfd_create("syzkaller", 0 [pid 5118] chdir("./8" [pid 5116] memfd_create("syzkaller", 0 [pid 5115] <... write resumed>) = 524288 [pid 5114] munmap(0x7f138d200000, 138412032 [pid 5058] <... rmdir resumed>) = 0 [pid 5118] <... chdir resumed>) = 0 [pid 5116] <... memfd_create resumed>) = 5 [pid 5117] <... memfd_create resumed>) = 5 [pid 5114] <... munmap resumed>) = 0 [pid 5058] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5118] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5118] <... prctl resumed>) = 0 [pid 5116] <... mmap resumed>) = 0x7f138d200000 [pid 5114] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5118] setpgid(0, 0 [pid 5116] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5117] <... mmap resumed>) = 0x7f138d200000 [pid 5114] close(5 [pid 5058] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5118] <... setpgid resumed>) = 0 [pid 5118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5115] munmap(0x7f138d200000, 138412032 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5118] <... openat resumed>) = 3 [pid 5115] <... munmap resumed>) = 0 [pid 5118] write(3, "1000", 4 [pid 5116] <... write resumed>) = 524288 [pid 5117] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5115] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5114] <... close resumed>) = 0 [pid 5058] unlink("./7/binderfs" [pid 5118] <... write resumed>) = 4 [pid 5118] close(3 [pid 5115] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... unlink resumed>) = 0 [pid 5118] <... close resumed>) = 0 [pid 5115] close(5 [pid 5118] symlink("/dev/binderfs", "./binderfs" [pid 5115] <... close resumed>) = 0 [pid 5058] getdents64(3, [pid 5118] <... symlink resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5118] memfd_create("syzkaller", 0 [pid 5114] creat("./file1", 000 [pid 5058] <... close resumed>) = 0 [pid 5118] <... memfd_create resumed>) = 3 [pid 5058] rmdir("./7" [pid 5118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5118] 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"..., 524288 [pid 5058] <... rmdir resumed>) = 0 [pid 5115] creat("./file1", 000 [pid 5058] mkdir("./8", 0777 [pid 5116] munmap(0x7f138d200000, 138412032 [pid 5117] <... write resumed>) = 524288 [pid 5115] <... creat resumed>) = 5 [pid 5058] <... mkdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5116] <... munmap resumed>) = 0 [pid 5117] munmap(0x7f138d200000, 138412032 [pid 5115] exit_group(0 [pid 5114] <... creat resumed>) = 5 [pid 5058] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5116] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5117] <... munmap resumed>) = 0 [pid 5115] <... exit_group resumed>) = ? [pid 5114] exit_group(0 [pid 5116] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5115] +++ exited with 0 +++ [pid 5118] <... write resumed>) = 524288 [pid 5116] close(5) = 0 [pid 5118] munmap(0x7f138d200000, 138412032 [pid 5117] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5114] <... exit_group resumed>) = ? [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5115, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5117] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5116] creat("./file1", 000 [pid 5117] close(5 [pid 5114] +++ exited with 0 +++ [pid 5061] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5061] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5116] <... creat resumed>) = 5 [pid 5061] <... openat resumed>) = 3 [pid 5117] <... close resumed>) = 0 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5118] <... munmap resumed>) = 0 [pid 5116] exit_group(0 [pid 5061] newfstatat(3, "", [pid 5118] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5117] creat("./file1", 000 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5116] <... exit_group resumed>) = ? [pid 5118] <... openat resumed>) = 4 [pid 5061] getdents64(3, [pid 5056] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5118] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5116] +++ exited with 0 +++ [pid 5117] <... creat resumed>) = 5 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5117] exit_group(0) = ? [pid 5056] <... openat resumed>) = 3 [pid 5117] +++ exited with 0 +++ [pid 5061] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... ioctl resumed>) = 0 [pid 5057] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(3, "", [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5060] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... openat resumed>) = 3 [pid 5056] getdents64(3, [pid 5060] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(3, [pid 5057] getdents64(3, [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5118] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5119 attached [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5119 [pid 5118] close(3 [pid 5119] set_robust_list(0x555556c07660, 24 [pid 5118] <... close resumed>) = 0 [pid 5118] close(4 [pid 5061] <... umount2 resumed>) = 0 [pid 5119] <... set_robust_list resumed>) = 0 [pid 5118] <... close resumed>) = 0 [pid 5061] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5119] chdir("./8" [pid 5118] mkdir("./bus", 0777 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5119] <... chdir resumed>) = 0 [pid 5118] <... mkdir resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./8/bus", [pid 5118] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5119] <... prctl resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5119] setpgid(0, 0 [pid 5061] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5119] <... setpgid resumed>) = 0 [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... openat resumed>) = 4 [pid 5061] newfstatat(4, "", [pid 5119] <... openat resumed>) = 3 [pid 5118] <... mount resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5119] write(3, "1000", 4 [pid 5118] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] getdents64(4, [pid 5056] <... umount2 resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] getdents64(4, [pid 5060] <... umount2 resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5118] <... openat resumed>) = 3 [pid 5119] <... write resumed>) = 4 [pid 5061] close(4 [pid 5056] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./7/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 60.758202][ T5118] loop3: detected capacity change from 0 to 1024 [pid 5119] close(3 [pid 5118] chdir("./bus" [pid 5061] <... close resumed>) = 0 [pid 5056] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(AT_FDCWD, "./7/bus", [pid 5057] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] rmdir("./8/bus" [pid 5119] <... close resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./8/bus", [pid 5118] <... chdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5060] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(4, "", [pid 5119] symlink("/dev/binderfs", "./binderfs" [pid 5118] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] <... openat resumed>) = 4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] getdents64(4, [pid 5061] <... rmdir resumed>) = 0 [pid 5118] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... openat resumed>) = 4 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5119] <... symlink resumed>) = 0 [pid 5118] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5057] newfstatat(4, "", [pid 5056] getdents64(4, [pid 5119] memfd_create("syzkaller", 0 [pid 5060] newfstatat(4, "", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5056] close(4 [pid 5119] <... memfd_create resumed>) = 3 [pid 5061] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... close resumed>) = 0 [pid 5118] <... symlink resumed>) = 0 [pid 5119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(4, [pid 5056] rmdir("./7/bus" [pid 5119] <... mmap resumed>) = 0x7f138d200000 [pid 5118] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] close(4 [pid 5056] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(4, [pid 5057] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] close(4 [pid 5057] rmdir("./8/bus" [pid 5060] <... close resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5060] rmdir("./7/bus" [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] unlink("./7/binderfs" [pid 5119] 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"..., 524288 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(3, [pid 5060] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5056] close(3 [pid 5060] unlink("./7/binderfs" [pid 5056] <... close resumed>) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] rmdir("./7" [pid 5060] getdents64(3, [pid 5056] <... rmdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] unlink("./8/binderfs" [pid 5060] close(3 [pid 5057] <... unlink resumed>) = 0 [pid 5056] mkdir("./8", 0777 [pid 5060] <... close resumed>) = 0 [pid 5118] <... creat resumed>) = 4 [pid 5061] unlink("./8/binderfs" [pid 5118] rename("./bus", "./file2" [pid 5061] <... unlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5061] getdents64(3, [pid 5060] rmdir("./7" [pid 5118] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5057] close(3 [pid 5056] <... mkdir resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] mkdir("./8", 0777 [pid 5057] <... close resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5118] memfd_create("syzkaller", 0 [pid 5061] rmdir("./8" [pid 5060] <... mkdir resumed>) = 0 [pid 5057] rmdir("./8" [pid 5056] <... openat resumed>) = 3 [pid 5118] <... memfd_create resumed>) = 5 [pid 5061] <... rmdir resumed>) = 0 [pid 5118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] mkdir("./9", 0777 [pid 5057] <... rmdir resumed>) = 0 [pid 5119] <... write resumed>) = 524288 [pid 5118] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... openat resumed>) = 3 [pid 5057] mkdir("./9", 0777 [pid 5061] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5057] <... mkdir resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5119] munmap(0x7f138d200000, 138412032 [pid 5118] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5119] <... munmap resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5119] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5119] ioctl(4, LOOP_SET_FD, 3 [pid 5118] <... write resumed>) = 524288 [pid 5118] munmap(0x7f138d200000, 138412032) = 0 [pid 5118] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5119] <... ioctl resumed>) = 0 [pid 5118] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5119] close(3) = 0 [pid 5118] close(5 [pid 5060] <... ioctl resumed>) = 0 [pid 5119] close(4 [pid 5118] <... close resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5119] <... close resumed>) = 0 [pid 5119] mkdir("./bus", 0777) = 0 [pid 5061] close(3) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] close(3 [pid 5057] <... ioctl resumed>) = 0 [pid 5119] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5118] creat("./file1", 000 [pid 5060] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] close(3./strace-static-x86_64: Process 5120 attached [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5120 [pid 5120] set_robust_list(0x555556c07660, 24 [pid 5056] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5120] <... set_robust_list resumed>) = 0 [pid 5120] chdir("./9" [pid 5118] <... creat resumed>) = 5 [pid 5118] exit_group(0) = ? [pid 5120] <... chdir resumed>) = 0 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5120] setpgid(0, 0) = 0 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5120] write(3, "1000", 4 [pid 5118] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5118, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 60.887412][ T5119] loop2: detected capacity change from 0 to 1024 [pid 5059] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5120] <... write resumed>) = 4 ./strace-static-x86_64: Process 5121 attached [pid 5120] close(3 [pid 5119] <... mount resumed>) = 0 [pid 5121] set_robust_list(0x555556c07660, 24 [pid 5057] close(3 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5121 [pid 5059] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5122 ./strace-static-x86_64: Process 5122 attached [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5122] set_robust_list(0x555556c07660, 24 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5121] <... set_robust_list resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5121] chdir("./8" [pid 5059] newfstatat(3, "", [pid 5121] <... chdir resumed>) = 0 [pid 5120] <... close resumed>) = 0 [pid 5119] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5122] <... set_robust_list resumed>) = 0 [pid 5122] chdir("./8" [pid 5120] symlink("/dev/binderfs", "./binderfs" [pid 5119] <... openat resumed>) = 3 [pid 5059] getdents64(3, [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5123 [pid 5122] <... chdir resumed>) = 0 [pid 5119] chdir("./bus" [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5119] <... chdir resumed>) = 0 [pid 5059] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5122] <... prctl resumed>) = 0 [pid 5120] <... symlink resumed>) = 0 [pid 5122] setpgid(0, 0 [pid 5119] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5122] <... setpgid resumed>) = 0 [pid 5121] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5119] <... openat resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 5123 attached [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5121] <... prctl resumed>) = 0 [pid 5120] memfd_create("syzkaller", 0 [pid 5119] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5123] set_robust_list(0x555556c07660, 24 [pid 5122] <... openat resumed>) = 3 [pid 5121] setpgid(0, 0 [pid 5123] <... set_robust_list resumed>) = 0 [pid 5122] write(3, "1000", 4 [pid 5121] <... setpgid resumed>) = 0 [pid 5120] <... memfd_create resumed>) = 3 [pid 5119] <... symlink resumed>) = 0 [pid 5123] chdir("./9" [pid 5122] <... write resumed>) = 4 [pid 5121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5119] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5123] <... chdir resumed>) = 0 [pid 5122] close(3 [pid 5121] <... openat resumed>) = 3 [pid 5120] <... mmap resumed>) = 0x7f138d200000 [pid 5122] <... close resumed>) = 0 [pid 5119] <... creat resumed>) = 4 [pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5122] symlink("/dev/binderfs", "./binderfs" [pid 5121] write(3, "1000", 4 [pid 5120] 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"..., 524288 [pid 5123] <... prctl resumed>) = 0 [pid 5121] <... write resumed>) = 4 [pid 5119] rename("./bus", "./file2" [pid 5059] <... umount2 resumed>) = 0 [pid 5123] setpgid(0, 0 [pid 5122] <... symlink resumed>) = 0 [pid 5121] close(3 [pid 5059] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5121] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5121] symlink("/dev/binderfs", "./binderfs" [pid 5059] newfstatat(AT_FDCWD, "./8/bus", [pid 5123] <... setpgid resumed>) = 0 [pid 5121] <... symlink resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5121] memfd_create("syzkaller", 0) = 3 [pid 5122] memfd_create("syzkaller", 0 [pid 5121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5119] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5123] <... openat resumed>) = 3 [pid 5122] <... memfd_create resumed>) = 3 [pid 5121] <... mmap resumed>) = 0x7f138d200000 [pid 5119] memfd_create("syzkaller", 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5123] write(3, "1000", 4 [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5121] 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"..., 524288 [pid 5119] <... memfd_create resumed>) = 5 [pid 5059] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5123] <... write resumed>) = 4 [pid 5122] <... mmap resumed>) = 0x7f138d200000 [pid 5123] close(3 [pid 5119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... openat resumed>) = 4 [pid 5123] <... close resumed>) = 0 [pid 5119] <... mmap resumed>) = 0x7f138d200000 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, [pid 5123] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5123] <... symlink resumed>) = 0 [pid 5119] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] getdents64(4, [pid 5123] memfd_create("syzkaller", 0 [pid 5122] 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"..., 524288 [pid 5123] <... memfd_create resumed>) = 3 [pid 5121] <... write resumed>) = 524288 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5120] <... write resumed>) = 524288 [pid 5059] rmdir("./8/bus") = 0 [pid 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5123] 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"..., 524288 [pid 5122] <... write resumed>) = 524288 [pid 5120] munmap(0x7f138d200000, 138412032 [pid 5059] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5122] munmap(0x7f138d200000, 138412032 [pid 5120] <... munmap resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5122] <... munmap resumed>) = 0 [pid 5119] <... write resumed>) = 524288 [pid 5059] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5120] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5121] munmap(0x7f138d200000, 138412032 [pid 5120] <... openat resumed>) = 4 [pid 5059] unlink("./8/binderfs" [pid 5121] <... munmap resumed>) = 0 [pid 5120] ioctl(4, LOOP_SET_FD, 3 [pid 5059] <... unlink resumed>) = 0 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] getdents64(3, [pid 5123] <... write resumed>) = 524288 [pid 5122] <... openat resumed>) = 4 [pid 5121] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5122] ioctl(4, LOOP_SET_FD, 3 [pid 5059] close(3 [pid 5121] <... openat resumed>) = 4 [pid 5059] <... close resumed>) = 0 [pid 5121] ioctl(4, LOOP_SET_FD, 3 [pid 5059] rmdir("./8" [pid 5119] munmap(0x7f138d200000, 138412032 [pid 5059] <... rmdir resumed>) = 0 [pid 5119] <... munmap resumed>) = 0 [pid 5123] munmap(0x7f138d200000, 138412032 [pid 5119] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] mkdir("./9", 0777 [pid 5123] <... munmap resumed>) = 0 [pid 5119] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... mkdir resumed>) = 0 [pid 5123] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5119] close(5 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5123] <... openat resumed>) = 4 [pid 5119] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5123] ioctl(4, LOOP_SET_FD, 3 [pid 5120] <... ioctl resumed>) = 0 [ 61.038722][ T5120] loop5: detected capacity change from 0 to 1024 [ 61.056497][ T5122] loop0: detected capacity change from 0 to 1024 [ 61.057375][ T5121] loop4: detected capacity change from 0 to 1024 [pid 5122] <... ioctl resumed>) = 0 [pid 5120] close(3) = 0 [pid 5122] close(3 [pid 5121] <... ioctl resumed>) = 0 [pid 5119] creat("./file1", 000 [pid 5122] <... close resumed>) = 0 [pid 5122] close(4 [pid 5120] close(4) = 0 [pid 5120] mkdir("./bus", 0777 [pid 5122] <... close resumed>) = 0 [pid 5120] <... mkdir resumed>) = 0 [pid 5121] close(3 [pid 5120] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5122] mkdir("./bus", 0777 [pid 5121] <... close resumed>) = 0 [pid 5123] <... ioctl resumed>) = 0 [pid 5121] close(4 [pid 5119] <... creat resumed>) = 5 [pid 5123] close(3 [pid 5122] <... mkdir resumed>) = 0 [pid 5121] <... close resumed>) = 0 [pid 5123] <... close resumed>) = 0 [pid 5121] mkdir("./bus", 0777 [pid 5119] exit_group(0 [pid 5121] <... mkdir resumed>) = 0 [pid 5123] close(4) = 0 [pid 5121] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5119] <... exit_group resumed>) = ? [pid 5123] mkdir("./bus", 0777) = 0 [pid 5123] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5122] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5119] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5058] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5120] <... mount resumed>) = 0 [pid 5120] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] chdir("./bus") = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [ 61.084171][ T5123] loop1: detected capacity change from 0 to 1024 [pid 5120] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... ioctl resumed>) = 0 [pid 5120] <... symlink resumed>) = 0 [pid 5059] close(3) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5120] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000./strace-static-x86_64: Process 5124 attached [pid 5121] <... mount resumed>) = 0 [pid 5124] set_robust_list(0x555556c07660, 24 [pid 5121] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5124 [pid 5124] <... set_robust_list resumed>) = 0 [pid 5120] <... creat resumed>) = 4 [pid 5121] <... openat resumed>) = 3 [pid 5124] chdir("./9" [pid 5120] rename("./bus", "./file2" [pid 5122] <... mount resumed>) = 0 [pid 5121] chdir("./bus" [pid 5120] <... rename resumed>) = -1 EEXIST (File exists) [pid 5124] <... chdir resumed>) = 0 [pid 5122] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5121] <... chdir resumed>) = 0 [pid 5120] memfd_create("syzkaller", 0 [pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5122] <... openat resumed>) = 3 [pid 5121] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5120] <... memfd_create resumed>) = 5 [pid 5124] <... prctl resumed>) = 0 [pid 5123] <... mount resumed>) = 0 [pid 5122] chdir("./bus" [pid 5121] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5123] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5120] <... mmap resumed>) = 0x7f138d200000 [pid 5124] setpgid(0, 0 [pid 5123] <... openat resumed>) = 3 [pid 5122] <... chdir resumed>) = 0 [pid 5121] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5120] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5124] <... setpgid resumed>) = 0 [pid 5123] chdir("./bus" [pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5123] <... chdir resumed>) = 0 [pid 5124] <... openat resumed>) = 3 [pid 5123] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5123] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5122] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5123] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] newfstatat(AT_FDCWD, "./8/bus", [pid 5122] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5121] <... symlink resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5121] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5120] <... write resumed>) = 524288 [pid 5124] write(3, "1000", 4 [pid 5120] munmap(0x7f138d200000, 138412032) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5124] <... write resumed>) = 4 [pid 5058] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5124] close(3 [pid 5120] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5058] <... openat resumed>) = 4 [pid 5120] close(5 [pid 5124] <... close resumed>) = 0 [pid 5124] symlink("/dev/binderfs", "./binderfs" [pid 5122] <... symlink resumed>) = 0 [pid 5122] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5124] <... symlink resumed>) = 0 [pid 5123] <... symlink resumed>) = 0 [pid 5120] <... close resumed>) = 0 [pid 5124] memfd_create("syzkaller", 0 [pid 5123] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] newfstatat(4, "", [pid 5120] creat("./file1", 000 [pid 5124] <... memfd_create resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5121] <... creat resumed>) = 4 [pid 5120] <... creat resumed>) = 5 [pid 5058] getdents64(4, [pid 5124] <... mmap resumed>) = 0x7f138d200000 [pid 5121] rename("./bus", "./file2" [pid 5120] exit_group(0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5120] <... exit_group resumed>) = ? [pid 5120] +++ exited with 0 +++ [pid 5058] close(4) = 0 [pid 5058] rmdir("./8/bus" [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5123] <... creat resumed>) = 4 [pid 5061] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5123] rename("./bus", "./file2" [pid 5061] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5124] 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"..., 524288 [pid 5121] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5121] memfd_create("syzkaller", 0 [pid 5058] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5122] <... creat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5121] <... memfd_create resumed>) = 5 [pid 5058] unlink("./8/binderfs" [pid 5122] rename("./bus", "./file2" [pid 5058] <... unlink resumed>) = 0 [pid 5058] getdents64(3, [pid 5123] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5123] memfd_create("syzkaller", 0 [pid 5058] close(3) = 0 [pid 5121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5123] <... memfd_create resumed>) = 5 [pid 5058] rmdir("./8" [pid 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5061] <... umount2 resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5122] <... rename resumed>) = -1 EEXIST (File exists) [pid 5122] memfd_create("syzkaller", 0 [pid 5058] mkdir("./9", 0777 [pid 5122] <... memfd_create resumed>) = 5 [pid 5058] <... mkdir resumed>) = 0 [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5061] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5061] newfstatat(AT_FDCWD, "./9/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5061] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] getdents64(4, [pid 5122] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./9/bus" [pid 5124] <... write resumed>) = 524288 [pid 5123] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5122] <... write resumed>) = 524288 [pid 5121] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5124] munmap(0x7f138d200000, 138412032 [pid 5123] <... write resumed>) = 524288 [pid 5121] <... write resumed>) = 524288 [pid 5061] <... rmdir resumed>) = 0 [pid 5124] <... munmap resumed>) = 0 [pid 5124] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5121] munmap(0x7f138d200000, 138412032 [pid 5124] <... openat resumed>) = 4 [pid 5061] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5124] ioctl(4, LOOP_SET_FD, 3 [pid 5122] munmap(0x7f138d200000, 138412032 [pid 5121] <... munmap resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5122] <... munmap resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./9/binderfs", [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5122] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] unlink("./9/binderfs" [pid 5122] close(5 [pid 5061] <... unlink resumed>) = 0 [pid 5123] munmap(0x7f138d200000, 138412032 [pid 5121] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] getdents64(3, [pid 5123] <... munmap resumed>) = 0 [pid 5122] <... close resumed>) = 0 [pid 5121] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5124] <... ioctl resumed>) = 0 [pid 5123] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5121] close(5 [pid 5124] close(3 [pid 5122] creat("./file1", 000 [pid 5061] close(3 [pid 5058] <... ioctl resumed>) = 0 [pid 5124] <... close resumed>) = 0 [pid 5124] close(4 [pid 5123] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5121] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5124] <... close resumed>) = 0 [pid 5124] mkdir("./bus", 0777 [pid 5123] close(5 [pid 5122] <... creat resumed>) = 5 [pid 5121] creat("./file1", 000 [pid 5061] rmdir("./9" [pid 5122] exit_group(0 [pid 5061] <... rmdir resumed>) = 0 [pid 5124] <... mkdir resumed>) = 0 [pid 5122] <... exit_group resumed>) = ? [pid 5061] mkdir("./10", 0777 [pid 5124] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5123] <... close resumed>) = 0 [pid 5122] +++ exited with 0 +++ [pid 5061] <... mkdir resumed>) = 0 [pid 5058] close(3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5061] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5121] <... creat resumed>) = 5 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 5125 attached [pid 5121] exit_group(0 [pid 5125] set_robust_list(0x555556c07660, 24 [pid 5121] <... exit_group resumed>) = ? [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5125 [pid 5056] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5125] <... set_robust_list resumed>) = 0 [pid 5125] chdir("./9") = 0 [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5123] creat("./file1", 000 [pid 5121] +++ exited with 0 +++ [pid 5056] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5121, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5125] setpgid(0, 0 [pid 5056] <... openat resumed>) = 3 [pid 5125] <... setpgid resumed>) = 0 [pid 5056] newfstatat(3, "", [ 61.279800][ T5124] loop3: detected capacity change from 0 to 1024 [pid 5060] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5124] <... mount resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] getdents64(3, [pid 5125] <... openat resumed>) = 3 [pid 5124] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] newfstatat(3, "", [pid 5056] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5125] write(3, "1000", 4 [pid 5124] <... openat resumed>) = 3 [pid 5125] <... write resumed>) = 4 [pid 5124] chdir("./bus" [pid 5125] close(3) = 0 [pid 5125] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5124] <... chdir resumed>) = 0 [pid 5123] <... creat resumed>) = 5 [pid 5061] <... ioctl resumed>) = 0 [pid 5060] getdents64(3, [pid 5056] <... umount2 resumed>) = 0 [pid 5125] memfd_create("syzkaller", 0 [pid 5124] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5125] <... memfd_create resumed>) = 3 [pid 5123] exit_group(0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5124] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5123] <... exit_group resumed>) = ? [pid 5060] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5125] <... mmap resumed>) = 0x7f138d200000 [pid 5124] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5125] 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"..., 524288 [pid 5123] +++ exited with 0 +++ [pid 5124] <... symlink resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5056] newfstatat(AT_FDCWD, "./8/bus", [pid 5057] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] close(3 [pid 5057] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556c07650) = 5126 [pid 5124] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] <... openat resumed>) = 3 [pid 5056] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(3, [pid 5056] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5126 attached [pid 5126] set_robust_list(0x555556c07660, 24) = 0 [pid 5126] chdir("./10" [pid 5056] <... openat resumed>) = 4 [pid 5126] <... chdir resumed>) = 0 [pid 5056] newfstatat(4, "", [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5126] <... prctl resumed>) = 0 [pid 5056] getdents64(4, [pid 5126] setpgid(0, 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5126] <... setpgid resumed>) = 0 [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5126] write(3, "1000", 4) = 4 [pid 5125] <... write resumed>) = 524288 [pid 5124] <... creat resumed>) = 4 [pid 5060] <... umount2 resumed>) = 0 [pid 5057] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5126] close(3) = 0 [pid 5126] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5126] memfd_create("syzkaller", 0) = 3 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5056] getdents64(4, [pid 5125] munmap(0x7f138d200000, 138412032 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5125] <... munmap resumed>) = 0 [pid 5124] rename("./bus", "./file2" [pid 5060] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5125] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] close(4 [pid 5125] <... openat resumed>) = 4 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5125] ioctl(4, LOOP_SET_FD, 3 [pid 5056] <... close resumed>) = 0 [pid 5124] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] newfstatat(AT_FDCWD, "./8/bus", [pid 5126] 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"..., 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] rmdir("./8/bus" [pid 5126] <... write resumed>) = 524288 [pid 5124] memfd_create("syzkaller", 0 [pid 5060] umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5124] <... memfd_create resumed>) = 5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 4 [pid 5056] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] newfstatat(4, "", [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5124] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] unlink("./8/binderfs") = 0 [pid 5060] getdents64(4, [pid 5126] munmap(0x7f138d200000, 138412032) = 0 [pid 5124] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(3, [pid 5126] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5125] <... ioctl resumed>) = 0 [pid 5126] <... openat resumed>) = 4 [pid 5125] close(3 [pid 5060] getdents64(4, [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5126] ioctl(4, LOOP_SET_FD, 3 [pid 5125] <... close resumed>) = 0 [pid 5060] close(4 [pid 5056] close(3 [pid 5060] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./8" [pid 5060] rmdir("./8/bus" [pid 5057] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5125] close(4 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5125] <... close resumed>) = 0 [pid 5060] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] mkdir("./9", 0777 [pid 5057] newfstatat(AT_FDCWD, "./9/bus", [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5125] mkdir("./bus", 0777) = 0 [pid 5060] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] unlink("./8/binderfs" [pid 5125] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] <... unlink resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 3 [pid 5060] getdents64(3, [pid 5057] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5060] close(3 [pid 5057] newfstatat(4, "", [pid 5125] <... mount resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5125] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] rmdir("./8" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5125] <... openat resumed>) = 3 [pid 5124] <... write resumed>) = 524288 [pid 5126] <... ioctl resumed>) = 0 [pid 5125] chdir("./bus" [pid 5124] munmap(0x7f138d200000, 138412032 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] getdents64(4, [pid 5126] close(3 [pid 5125] <... chdir resumed>) = 0 [pid 5126] <... close resumed>) = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] mkdir("./9", 0777 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5126] close(4 [pid 5125] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] getdents64(4, [pid 5126] <... close resumed>) = 0 [pid 5125] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5124] <... munmap resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] close(4 [pid 5126] mkdir("./bus", 0777) = 0 [pid 5125] <... symlink resumed>) = 0 [pid 5124] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5125] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] rmdir("./9/bus" [pid 5126] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5124] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... openat resumed>) = 3 [pid 5124] close(5 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5057] <... rmdir resumed>) = 0 [pid 5125] <... creat resumed>) = 4 [pid 5125] rename("./bus", "./file2" [pid 5124] <... close resumed>) = 0 [pid 5057] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5125] <... rename resumed>) = -1 EEXIST (File exists) [pid 5126] <... mount resumed>) = 0 [pid 5125] memfd_create("syzkaller", 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5126] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5057] newfstatat(AT_FDCWD, "./9/binderfs", [pid 5126] <... openat resumed>) = 3 [pid 5125] <... memfd_create resumed>) = 5 [pid 5124] creat("./file1", 000 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5126] chdir("./bus" [ 61.421206][ T5125] loop2: detected capacity change from 0 to 1024 [ 61.448299][ T5126] loop5: detected capacity change from 0 to 1024 [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] unlink("./9/binderfs" [pid 5126] <... chdir resumed>) = 0 [pid 5125] <... mmap resumed>) = 0x7f138d200000 [pid 5126] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] <... unlink resumed>) = 0 [pid 5126] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5126] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5125] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5124] <... creat resumed>) = 5 [pid 5057] getdents64(3, [pid 5056] <... ioctl resumed>) = 0 [pid 5126] <... symlink resumed>) = 0 [pid 5126] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5124] exit_group(0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5125] <... write resumed>) = 524288 [pid 5125] munmap(0x7f138d200000, 138412032) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5124] <... exit_group resumed>) = ? [pid 5060] close(3 [pid 5057] close(3 [pid 5056] close(3 [pid 5126] <... creat resumed>) = 4 [pid 5125] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5125] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5125] close(5 [pid 5126] rename("./bus", "./file2" [pid 5124] +++ exited with 0 +++ [pid 5060] <... close resumed>) = 0 [pid 5057] rmdir("./9" [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5059] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5127 attached [pid 5126] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... rmdir resumed>) = 0 [pid 5127] set_robust_list(0x555556c07660, 24 [pid 5126] memfd_create("syzkaller", 0) = 5 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5127 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5125] <... close resumed>) = 0 [pid 5127] <... set_robust_list resumed>) = 0 [pid 5057] mkdir("./10", 0777 [pid 5126] <... mmap resumed>) = 0x7f138d200000 [pid 5125] creat("./file1", 000 [pid 5059] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5128 attached [pid 5127] chdir("./9" [pid 5126] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5128 [pid 5057] <... mkdir resumed>) = 0 [pid 5127] <... chdir resumed>) = 0 [pid 5128] set_robust_list(0x555556c07660, 24 [pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... openat resumed>) = 3 [pid 5128] <... set_robust_list resumed>) = 0 [pid 5127] <... prctl resumed>) = 0 [pid 5059] newfstatat(3, "", [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5128] chdir("./9" [pid 5127] setpgid(0, 0 [pid 5057] <... openat resumed>) = 3 [pid 5127] <... setpgid resumed>) = 0 [pid 5128] <... chdir resumed>) = 0 [pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] getdents64(3, [pid 5128] <... prctl resumed>) = 0 [pid 5127] <... openat resumed>) = 3 [pid 5126] <... write resumed>) = 524288 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5128] setpgid(0, 0 [pid 5127] write(3, "1000", 4 [pid 5126] munmap(0x7f138d200000, 138412032 [pid 5125] <... creat resumed>) = 5 [pid 5059] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5128] <... setpgid resumed>) = 0 [pid 5127] <... write resumed>) = 4 [pid 5125] exit_group(0 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5127] close(3 [pid 5126] <... munmap resumed>) = 0 [pid 5125] <... exit_group resumed>) = ? [pid 5128] <... openat resumed>) = 3 [pid 5127] <... close resumed>) = 0 [pid 5125] +++ exited with 0 +++ [pid 5128] write(3, "1000", 4 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5128] <... write resumed>) = 4 [pid 5058] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5127] symlink("/dev/binderfs", "./binderfs" [pid 5128] close(3 [pid 5058] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5127] <... symlink resumed>) = 0 [pid 5126] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5128] <... close resumed>) = 0 [pid 5127] memfd_create("syzkaller", 0 [pid 5126] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5126] close(5 [pid 5127] <... memfd_create resumed>) = 3 [pid 5128] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... umount2 resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5128] <... symlink resumed>) = 0 [pid 5127] <... mmap resumed>) = 0x7f138d200000 [pid 5126] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5128] memfd_create("syzkaller", 0 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5126] creat("./file1", 000 [pid 5058] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5128] <... memfd_create resumed>) = 3 [pid 5059] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5128] <... mmap resumed>) = 0x7f138d200000 [pid 5128] 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"..., 524288 [pid 5127] 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"..., 524288 [pid 5059] newfstatat(AT_FDCWD, "./9/bus", [pid 5126] <... creat resumed>) = 5 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5126] exit_group(0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] newfstatat(4, "", [pid 5126] <... exit_group resumed>) = ? [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5126] +++ exited with 0 +++ [pid 5059] <... close resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5059] rmdir("./9/bus") = 0 [pid 5128] <... write resumed>) = 524288 [pid 5127] <... write resumed>) = 524288 [pid 5059] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./9/binderfs", [pid 5061] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./9/binderfs" [pid 5061] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... unlink resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] getdents64(3, [pid 5061] newfstatat(3, "", [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3 [pid 5127] munmap(0x7f138d200000, 138412032 [pid 5057] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] close(3 [pid 5127] <... munmap resumed>) = 0 [pid 5061] getdents64(3, [pid 5059] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] rmdir("./9"./strace-static-x86_64: Process 5129 attached [pid 5061] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... rmdir resumed>) = 0 [pid 5127] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5129] set_robust_list(0x555556c07660, 24 [pid 5059] mkdir("./10", 0777 [pid 5058] <... umount2 resumed>) = 0 [pid 5128] munmap(0x7f138d200000, 138412032 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5128] <... munmap resumed>) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... openat resumed>) = 3 [pid 5058] newfstatat(AT_FDCWD, "./9/bus", [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5128] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] <... openat resumed>) = 4 [pid 5129] <... set_robust_list resumed>) = 0 [pid 5128] <... openat resumed>) = 4 [pid 5058] newfstatat(4, "", [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5129 [pid 5129] chdir("./10") = 0 [pid 5127] <... openat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5127] ioctl(4, LOOP_SET_FD, 3 [pid 5128] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... umount2 resumed>) = 0 [pid 5129] <... prctl resumed>) = 0 [pid 5128] <... ioctl resumed>) = 0 [pid 5127] <... ioctl resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./9/bus") = 0 [pid 5058] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./9/binderfs") = 0 [pid 5058] getdents64(3, [pid 5059] close(3 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] close(3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./9") = 0 ./strace-static-x86_64: Process 5130 attached [pid 5058] mkdir("./10", 0777 [pid 5130] set_robust_list(0x555556c07660, 24 [pid 5058] <... mkdir resumed>) = 0 [pid 5129] setpgid(0, 0 [pid 5128] close(3 [pid 5127] close(3 [pid 5129] <... setpgid resumed>) = 0 [pid 5128] <... close resumed>) = 0 [pid 5127] <... close resumed>) = 0 [pid 5128] close(4 [pid 5127] close(4 [pid 5130] <... set_robust_list resumed>) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5128] <... close resumed>) = 0 [pid 5127] <... close resumed>) = 0 [pid 5061] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5130 [pid 5130] chdir("./10" [pid 5129] <... openat resumed>) = 3 [pid 5128] mkdir("./bus", 0777 [pid 5127] mkdir("./bus", 0777 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5130] <... chdir resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./10/bus", [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5127] <... mkdir resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5130] <... prctl resumed>) = 0 [pid 5128] <... mkdir resumed>) = 0 [pid 5127] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5130] setpgid(0, 0 [pid 5061] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5130] <... setpgid resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5128] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5130] <... openat resumed>) = 3 [pid 5129] write(3, "1000", 4 [pid 5127] <... mount resumed>) = 0 [pid 5130] write(3, "1000", 4 [pid 5129] <... write resumed>) = 4 [pid 5127] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] <... openat resumed>) = 4 [pid 5130] <... write resumed>) = 4 [pid 5129] close(3 [pid 5127] <... openat resumed>) = 3 [pid 5061] newfstatat(4, "", [pid 5130] close(3 [pid 5129] <... close resumed>) = 0 [pid 5127] chdir("./bus" [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5130] <... close resumed>) = 0 [pid 5129] symlink("/dev/binderfs", "./binderfs" [pid 5127] <... chdir resumed>) = 0 [pid 5061] getdents64(4, [ 61.649977][ T5127] loop0: detected capacity change from 0 to 1024 [ 61.652912][ T5128] loop4: detected capacity change from 0 to 1024 [pid 5130] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5130] <... symlink resumed>) = 0 [pid 5129] <... symlink resumed>) = 0 [pid 5128] <... mount resumed>) = 0 [pid 5127] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] getdents64(4, [pid 5130] memfd_create("syzkaller", 0 [pid 5129] memfd_create("syzkaller", 0 [pid 5128] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5127] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5129] <... memfd_create resumed>) = 3 [pid 5128] <... openat resumed>) = 3 [pid 5127] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] close(4 [pid 5130] <... memfd_create resumed>) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5128] chdir("./bus" [pid 5061] <... close resumed>) = 0 [pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5129] <... mmap resumed>) = 0x7f138d200000 [pid 5128] <... chdir resumed>) = 0 [pid 5127] <... symlink resumed>) = 0 [pid 5061] rmdir("./10/bus" [pid 5130] <... mmap resumed>) = 0x7f138d200000 [pid 5128] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5127] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... rmdir resumed>) = 0 [pid 5129] 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"..., 524288 [pid 5061] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5128] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5128] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./10/binderfs") = 0 [pid 5130] 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"..., 524288 [pid 5061] getdents64(3, [pid 5127] <... creat resumed>) = 4 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5128] <... symlink resumed>) = 0 [pid 5127] rename("./bus", "./file2" [pid 5061] <... close resumed>) = 0 [pid 5129] <... write resumed>) = 524288 [pid 5128] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] <... ioctl resumed>) = 0 [pid 5127] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] rmdir("./10" [pid 5129] munmap(0x7f138d200000, 138412032 [pid 5128] <... creat resumed>) = 4 [pid 5127] memfd_create("syzkaller", 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5058] close(3 [pid 5128] rename("./bus", "./file2" [pid 5061] mkdir("./11", 0777 [pid 5127] <... memfd_create resumed>) = 5 [pid 5061] <... mkdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5130] <... write resumed>) = 524288 [pid 5129] <... munmap resumed>) = 0 [pid 5128] <... rename resumed>) = -1 EEXIST (File exists) [pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5127] <... mmap resumed>) = 0x7f138d200000 [pid 5129] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5128] memfd_create("syzkaller", 0 [pid 5127] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... openat resumed>) = 3 [pid 5129] <... openat resumed>) = 4 [pid 5128] <... memfd_create resumed>) = 5 [pid 5129] ioctl(4, LOOP_SET_FD, 3 [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5130] munmap(0x7f138d200000, 138412032./strace-static-x86_64: Process 5131 attached ) = 0 [pid 5131] set_robust_list(0x555556c07660, 24) = 0 [pid 5130] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5131] chdir("./10" [pid 5130] <... openat resumed>) = 4 [pid 5131] <... chdir resumed>) = 0 [pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5130] ioctl(4, LOOP_SET_FD, 3 [pid 5131] <... prctl resumed>) = 0 [pid 5128] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5131 [pid 5131] setpgid(0, 0 [pid 5129] <... ioctl resumed>) = 0 [pid 5127] <... write resumed>) = 524288 [pid 5129] close(3 [pid 5131] <... setpgid resumed>) = 0 [pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5129] <... close resumed>) = 0 [pid 5129] close(4 [pid 5127] munmap(0x7f138d200000, 138412032 [pid 5131] write(3, "1000", 4 [pid 5127] <... munmap resumed>) = 0 [pid 5131] <... write resumed>) = 4 [pid 5129] <... close resumed>) = 0 [pid 5131] close(3 [pid 5129] mkdir("./bus", 0777 [pid 5128] <... write resumed>) = 524288 [pid 5127] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5131] <... close resumed>) = 0 [pid 5130] <... ioctl resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5131] symlink("/dev/binderfs", "./binderfs" [pid 5130] close(3 [pid 5129] <... mkdir resumed>) = 0 [pid 5128] munmap(0x7f138d200000, 138412032 [pid 5127] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5131] <... symlink resumed>) = 0 [pid 5130] <... close resumed>) = 0 [pid 5129] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5127] close(5 [pid 5131] memfd_create("syzkaller", 0) = 3 [pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5130] close(4 [pid 5129] <... mount resumed>) = 0 [pid 5128] <... munmap resumed>) = 0 [pid 5127] <... close resumed>) = 0 [pid 5131] <... mmap resumed>) = 0x7f138d200000 [pid 5130] <... close resumed>) = 0 [pid 5129] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5128] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] close(3 [pid 5129] <... openat resumed>) = 3 [pid 5130] mkdir("./bus", 0777 [pid 5128] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5129] chdir("./bus" [pid 5131] 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"..., 524288 [pid 5130] <... mkdir resumed>) = 0 [pid 5129] <... chdir resumed>) = 0 [pid 5128] close(5 [pid 5061] <... close resumed>) = 0 [ 61.764370][ T5129] loop1: detected capacity change from 0 to 1024 [ 61.773249][ T5130] loop3: detected capacity change from 0 to 1024 [pid 5129] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5129] <... openat resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 5132 attached [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5132 [pid 5132] set_robust_list(0x555556c07660, 24) = 0 [pid 5130] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5129] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5127] creat("./file1", 000 [pid 5132] chdir("./11") = 0 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5132] setpgid(0, 0) = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5132] write(3, "1000", 4 [pid 5128] <... close resumed>) = 0 [pid 5129] <... symlink resumed>) = 0 [pid 5132] <... write resumed>) = 4 [pid 5131] <... write resumed>) = 524288 [pid 5129] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5127] <... creat resumed>) = 5 [pid 5132] close(3) = 0 [pid 5132] symlink("/dev/binderfs", "./binderfs" [pid 5128] creat("./file1", 000 [pid 5127] exit_group(0 [pid 5132] <... symlink resumed>) = 0 [pid 5130] <... mount resumed>) = 0 [pid 5132] memfd_create("syzkaller", 0 [pid 5131] munmap(0x7f138d200000, 138412032 [pid 5130] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5127] <... exit_group resumed>) = ? [pid 5132] <... memfd_create resumed>) = 3 [pid 5131] <... munmap resumed>) = 0 [pid 5130] <... openat resumed>) = 3 [pid 5130] chdir("./bus" [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5130] <... chdir resumed>) = 0 [pid 5131] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5130] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5128] <... creat resumed>) = 5 [pid 5129] <... creat resumed>) = 4 [pid 5130] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5131] <... openat resumed>) = 4 [pid 5130] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5129] rename("./bus", "./file2" [pid 5131] ioctl(4, LOOP_SET_FD, 3 [pid 5128] exit_group(0 [pid 5130] <... symlink resumed>) = 0 [pid 5129] <... rename resumed>) = -1 EEXIST (File exists) [pid 5127] +++ exited with 0 +++ [pid 5132] 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"..., 524288 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5130] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5128] <... exit_group resumed>) = ? [pid 5129] memfd_create("syzkaller", 0 [pid 5132] <... write resumed>) = 524288 [pid 5130] <... creat resumed>) = 4 [pid 5129] <... memfd_create resumed>) = 5 [pid 5128] +++ exited with 0 +++ [pid 5056] getdents64(3, [pid 5130] rename("./bus", "./file2" [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5130] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5130] memfd_create("syzkaller", 0 [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, [pid 5132] munmap(0x7f138d200000, 138412032 [pid 5131] <... ioctl resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5132] <... munmap resumed>) = 0 [pid 5131] close(3 [pid 5130] <... memfd_create resumed>) = 5 [pid 5060] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5131] <... close resumed>) = 0 [pid 5129] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5131] close(4 [pid 5132] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5131] <... close resumed>) = 0 [pid 5130] <... mmap resumed>) = 0x7f138d200000 [pid 5132] <... openat resumed>) = 4 [pid 5131] mkdir("./bus", 0777) = 0 [pid 5132] ioctl(4, LOOP_SET_FD, 3 [pid 5056] <... umount2 resumed>) = 0 [pid 5129] <... write resumed>) = 524288 [pid 5132] <... ioctl resumed>) = 0 [pid 5131] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5130] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5129] munmap(0x7f138d200000, 138412032 [pid 5056] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5132] close(3) = 0 [pid 5132] close(4) = 0 [pid 5132] mkdir("./bus", 0777) = 0 [pid 5132] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5129] <... munmap resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5129] openat(AT_FDCWD, "/dev/loop1", O_RDWR [ 61.859313][ T5131] loop2: detected capacity change from 0 to 1024 [ 61.896367][ T5132] loop5: detected capacity change from 0 to 1024 [pid 5056] newfstatat(AT_FDCWD, "./9/bus", [pid 5060] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5129] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5132] <... mount resumed>) = 0 [pid 5130] <... write resumed>) = 524288 [pid 5129] close(5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5129] <... close resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5130] munmap(0x7f138d200000, 138412032 [pid 5060] newfstatat(AT_FDCWD, "./9/bus", [pid 5056] <... openat resumed>) = 4 [pid 5056] newfstatat(4, "", [pid 5132] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5131] <... mount resumed>) = 0 [pid 5130] <... munmap resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5132] <... openat resumed>) = 3 [pid 5131] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5131] <... openat resumed>) = 3 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5132] chdir("./bus" [pid 5131] chdir("./bus" [pid 5060] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5132] <... chdir resumed>) = 0 [pid 5131] <... chdir resumed>) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5132] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5131] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] newfstatat(4, "", [pid 5132] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5131] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5129] creat("./file1", 000 [pid 5130] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5131] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] getdents64(4, [pid 5131] <... symlink resumed>) = 0 [pid 5130] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5129] <... creat resumed>) = 5 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5131] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5130] close(5 [pid 5129] exit_group(0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5132] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5129] <... exit_group resumed>) = ? [pid 5132] <... symlink resumed>) = 0 [pid 5131] <... creat resumed>) = 4 [pid 5060] getdents64(4, [pid 5056] close(4 [pid 5132] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5131] rename("./bus", "./file2" [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5129] +++ exited with 0 +++ [pid 5060] close(4) = 0 [pid 5060] rmdir("./9/bus" [pid 5056] <... close resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5132] <... creat resumed>) = 4 [pid 5131] <... rename resumed>) = -1 EEXIST (File exists) [pid 5130] <... close resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5132] rename("./bus", "./file2" [pid 5056] rmdir("./9/bus" [pid 5131] memfd_create("syzkaller", 0 [pid 5060] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5131] <... memfd_create resumed>) = 5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5130] creat("./file1", 000 [pid 5060] newfstatat(AT_FDCWD, "./9/binderfs", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5131] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] newfstatat(AT_FDCWD, "./9/binderfs", [pid 5132] <... rename resumed>) = -1 EEXIST (File exists) [pid 5131] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5130] <... creat resumed>) = 5 [pid 5060] unlink("./9/binderfs" [pid 5132] memfd_create("syzkaller", 0 [pid 5130] exit_group(0 [pid 5060] <... unlink resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5130] <... exit_group resumed>) = ? [pid 5060] getdents64(3, [pid 5056] unlink("./9/binderfs" [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5132] <... memfd_create resumed>) = 5 [pid 5060] close(3 [pid 5056] <... unlink resumed>) = 0 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... close resumed>) = 0 [pid 5132] <... mmap resumed>) = 0x7f138d200000 [pid 5060] rmdir("./9" [pid 5132] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5130] +++ exited with 0 +++ [pid 5060] <... rmdir resumed>) = 0 [pid 5057] newfstatat(3, "", [pid 5056] getdents64(3, [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5131] <... write resumed>) = 524288 [pid 5060] mkdir("./10", 0777 [pid 5059] <... restart_syscall resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] close(3 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... close resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./9" [pid 5060] <... openat resumed>) = 3 [pid 5059] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5132] <... write resumed>) = 524288 [pid 5131] munmap(0x7f138d200000, 138412032 [pid 5059] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] mkdir("./10", 0777 [pid 5057] newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5057] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5131] <... munmap resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5131] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5131] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] getdents64(4, [pid 5132] munmap(0x7f138d200000, 138412032 [pid 5131] close(5 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] close(4 [pid 5132] <... munmap resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./10/bus" [pid 5056] <... openat resumed>) = 3 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5132] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5132] close(5 [pid 5057] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5131] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5059] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./10/binderfs" [pid 5059] newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5059] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(3, [pid 5131] creat("./file1", 000 [pid 5059] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5132] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5057] close(3 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... close resumed>) = 0 [pid 5059] getdents64(4, [pid 5057] rmdir("./10" [pid 5132] creat("./file1", 000 [pid 5131] <... creat resumed>) = 5 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./10/bus") = 0 [pid 5059] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... rmdir resumed>) = 0 [pid 5131] exit_group(0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5132] <... creat resumed>) = 5 [pid 5131] <... exit_group resumed>) = ? [pid 5059] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5057] mkdir("./11", 0777 [pid 5132] exit_group(0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5132] <... exit_group resumed>) = ? [pid 5059] unlink("./10/binderfs") = 0 [pid 5059] getdents64(3, [pid 5132] +++ exited with 0 +++ [pid 5131] +++ exited with 0 +++ [pid 5060] <... ioctl resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] close(3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] close(3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] <... close resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5061] <... openat resumed>) = 3 [pid 5058] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] newfstatat(3, "", [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] close(3 [pid 5061] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... close resumed>) = 0 ./strace-static-x86_64: Process 5133 attached [pid 5059] rmdir("./10" [pid 5058] <... openat resumed>) = 3 [pid 5133] set_robust_list(0x555556c07660, 24 [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5133 ./strace-static-x86_64: Process 5134 attached [pid 5134] set_robust_list(0x555556c07660, 24) = 0 [pid 5134] chdir("./10") = 0 [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5134] setpgid(0, 0) = 0 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5134] write(3, "1000", 4) = 4 [pid 5134] close(3) = 0 [pid 5134] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5134] memfd_create("syzkaller", 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5134 [pid 5134] <... memfd_create resumed>) = 3 [pid 5134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5133] <... set_robust_list resumed>) = 0 [pid 5058] newfstatat(3, "", [pid 5133] chdir("./10") = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5133] setpgid(0, 0 [pid 5059] mkdir("./11", 0777 [pid 5058] getdents64(3, [pid 5133] <... setpgid resumed>) = 0 [pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5133] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5133] write(3, "1000", 4 [pid 5134] 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"..., 524288 [pid 5133] <... write resumed>) = 4 [pid 5059] <... openat resumed>) = 3 [pid 5133] close(3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5133] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5133] symlink("/dev/binderfs", "./binderfs" [pid 5058] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5133] <... symlink resumed>) = 0 [pid 5061] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5133] memfd_create("syzkaller", 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./10/bus", [pid 5061] newfstatat(AT_FDCWD, "./11/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5133] <... memfd_create resumed>) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5134] <... write resumed>) = 524288 [pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... openat resumed>) = 4 [pid 5058] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5134] munmap(0x7f138d200000, 138412032 [pid 5133] <... mmap resumed>) = 0x7f138d200000 [pid 5061] newfstatat(4, "", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, [pid 5058] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... openat resumed>) = 4 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5133] 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"..., 524288 [pid 5061] rmdir("./11/bus" [pid 5058] newfstatat(4, "", [pid 5134] <... munmap resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5134] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] getdents64(4, [pid 5134] <... openat resumed>) = 4 [pid 5134] ioctl(4, LOOP_SET_FD, 3 [pid 5133] <... write resumed>) = 524288 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... ioctl resumed>) = 0 [pid 5061] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./11/binderfs") = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5058] getdents64(4, [pid 5061] <... close resumed>) = 0 [pid 5133] munmap(0x7f138d200000, 138412032 [pid 5061] rmdir("./11" [pid 5059] close(3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5058] close(4 [pid 5057] close(3 [pid 5059] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5133] <... munmap resumed>) = 0 [pid 5061] mkdir("./12", 0777 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... close resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] rmdir("./10/bus" [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 5136 attached ) = 3 [pid 5136] set_robust_list(0x555556c07660, 24 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5136] <... set_robust_list resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5136 ./strace-static-x86_64: Process 5135 attached [pid 5136] chdir("./11" [pid 5134] <... ioctl resumed>) = 0 [pid 5133] <... openat resumed>) = 4 [pid 5058] <... rmdir resumed>) = 0 [pid 5134] close(3 [pid 5133] ioctl(4, LOOP_SET_FD, 3 [pid 5058] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5135] set_robust_list(0x555556c07660, 24) = 0 [pid 5135] chdir("./11" [pid 5136] <... chdir resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5135 [pid 5135] <... chdir resumed>) = 0 [pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5135] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5136] <... prctl resumed>) = 0 [pid 5135] <... prctl resumed>) = 0 [pid 5136] setpgid(0, 0 [pid 5135] setpgid(0, 0 [pid 5136] <... setpgid resumed>) = 0 [pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5135] <... setpgid resumed>) = 0 [pid 5135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5134] <... close resumed>) = 0 [pid 5133] <... ioctl resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5135] <... openat resumed>) = 3 [pid 5136] write(3, "1000", 4 [pid 5134] close(4 [pid 5135] write(3, "1000", 4 [pid 5136] <... write resumed>) = 4 [pid 5134] <... close resumed>) = 0 [pid 5135] <... write resumed>) = 4 [pid 5136] close(3 [pid 5134] mkdir("./bus", 0777 [pid 5135] close(3 [pid 5136] <... close resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5135] <... close resumed>) = 0 [pid 5136] symlink("/dev/binderfs", "./binderfs" [pid 5134] <... mkdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./10/binderfs" [pid 5136] <... symlink resumed>) = 0 [pid 5135] symlink("/dev/binderfs", "./binderfs" [pid 5136] memfd_create("syzkaller", 0 [pid 5058] <... unlink resumed>) = 0 [pid 5135] <... symlink resumed>) = 0 [pid 5134] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] getdents64(3, [pid 5135] memfd_create("syzkaller", 0 [pid 5136] <... memfd_create resumed>) = 3 [pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5135] <... memfd_create resumed>) = 3 [pid 5136] <... mmap resumed>) = 0x7f138d200000 [pid 5058] close(3 [pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./10" [pid 5135] <... mmap resumed>) = 0x7f138d200000 [pid 5135] 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"..., 524288 [pid 5058] <... rmdir resumed>) = 0 [pid 5134] <... mount resumed>) = 0 [pid 5133] close(3 [pid 5061] <... ioctl resumed>) = 0 [pid 5058] mkdir("./11", 0777 [pid 5134] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5136] 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"..., 524288 [pid 5134] <... openat resumed>) = 3 [pid 5133] <... close resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5134] chdir("./bus" [pid 5133] close(4 [pid 5134] <... chdir resumed>) = 0 [pid 5133] <... close resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5134] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5133] mkdir("./bus", 0777) = 0 [pid 5134] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5136] <... write resumed>) = 524288 [pid 5134] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5135] <... write resumed>) = 524288 [ 62.144321][ T5134] loop4: detected capacity change from 0 to 1024 [ 62.167631][ T5133] loop0: detected capacity change from 0 to 1024 [pid 5135] munmap(0x7f138d200000, 138412032 [pid 5136] munmap(0x7f138d200000, 138412032 [pid 5135] <... munmap resumed>) = 0 [pid 5136] <... munmap resumed>) = 0 [pid 5134] <... symlink resumed>) = 0 [pid 5134] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5133] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] close(3 [pid 5135] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5136] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5135] <... openat resumed>) = 4 [pid 5136] <... openat resumed>) = 4 [pid 5061] <... close resumed>) = 0 [pid 5135] ioctl(4, LOOP_SET_FD, 3 [pid 5136] ioctl(4, LOOP_SET_FD, 3 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5134] <... creat resumed>) = 4 [pid 5133] <... mount resumed>) = 0 [pid 5134] rename("./bus", "./file2" [pid 5133] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5134] <... rename resumed>) = -1 EEXIST (File exists) [pid 5133] chdir("./bus") = 0 ./strace-static-x86_64: Process 5137 attached [pid 5135] <... ioctl resumed>) = 0 [pid 5134] memfd_create("syzkaller", 0 [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5137 [pid 5135] close(3 [pid 5137] set_robust_list(0x555556c07660, 24) = 0 [pid 5137] chdir("./12") = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5135] <... close resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5137] setpgid(0, 0 [pid 5135] close(4 [pid 5133] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5137] <... setpgid resumed>) = 0 [pid 5135] <... close resumed>) = 0 [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5135] mkdir("./bus", 0777 [pid 5134] <... memfd_create resumed>) = 5 [pid 5133] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] close(3 [pid 5137] <... openat resumed>) = 3 [pid 5135] <... mkdir resumed>) = 0 [pid 5134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5133] <... symlink resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5137] write(3, "1000", 4 [pid 5136] <... ioctl resumed>) = 0 [pid 5134] <... mmap resumed>) = 0x7f138d200000 [pid 5133] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5137] <... write resumed>) = 4 [pid 5137] close(3) = 0 [pid 5137] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5137] memfd_create("syzkaller", 0 [pid 5136] close(3 [pid 5137] <... memfd_create resumed>) = 3 [pid 5136] <... close resumed>) = 0 [ 62.240787][ T5135] loop3: detected capacity change from 0 to 1024 [ 62.249359][ T5136] loop1: detected capacity change from 0 to 1024 ./strace-static-x86_64: Process 5138 attached [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5136] close(4 [pid 5137] <... mmap resumed>) = 0x7f138d200000 [pid 5135] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5136] <... close resumed>) = 0 [pid 5138] set_robust_list(0x555556c07660, 24 [pid 5136] mkdir("./bus", 0777 [pid 5134] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5138 [pid 5137] 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"..., 524288 [pid 5136] <... mkdir resumed>) = 0 [pid 5138] <... set_robust_list resumed>) = 0 [pid 5138] chdir("./11" [pid 5133] <... creat resumed>) = 4 [pid 5138] <... chdir resumed>) = 0 [pid 5136] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5133] rename("./bus", "./file2" [pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5133] <... rename resumed>) = -1 EEXIST (File exists) [pid 5138] setpgid(0, 0 [pid 5133] memfd_create("syzkaller", 0 [pid 5138] <... setpgid resumed>) = 0 [pid 5133] <... memfd_create resumed>) = 5 [pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5136] <... mount resumed>) = 0 [pid 5134] <... write resumed>) = 524288 [pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5136] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5133] <... mmap resumed>) = 0x7f138d200000 [pid 5136] <... openat resumed>) = 3 [pid 5136] chdir("./bus" [pid 5138] <... openat resumed>) = 3 [pid 5137] <... write resumed>) = 524288 [pid 5135] <... mount resumed>) = 0 [pid 5136] <... chdir resumed>) = 0 [pid 5135] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5136] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5134] munmap(0x7f138d200000, 138412032 [pid 5138] write(3, "1000", 4 [pid 5135] <... openat resumed>) = 3 [pid 5136] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5138] <... write resumed>) = 4 [pid 5137] munmap(0x7f138d200000, 138412032 [pid 5136] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5134] <... munmap resumed>) = 0 [pid 5137] <... munmap resumed>) = 0 [pid 5135] chdir("./bus" [pid 5136] <... symlink resumed>) = 0 [pid 5133] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5138] close(3) = 0 [pid 5137] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5135] <... chdir resumed>) = 0 [pid 5136] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5134] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5138] symlink("/dev/binderfs", "./binderfs" [pid 5137] <... openat resumed>) = 4 [pid 5135] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5137] ioctl(4, LOOP_SET_FD, 3 [pid 5134] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5138] <... symlink resumed>) = 0 [pid 5135] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5134] close(5 [pid 5133] <... write resumed>) = 524288 [pid 5135] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5136] <... creat resumed>) = 4 [pid 5136] rename("./bus", "./file2" [pid 5138] memfd_create("syzkaller", 0 [pid 5135] <... symlink resumed>) = 0 [pid 5136] <... rename resumed>) = -1 EEXIST (File exists) [pid 5135] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5136] memfd_create("syzkaller", 0) = 5 [pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5138] <... memfd_create resumed>) = 3 [pid 5136] <... mmap resumed>) = 0x7f138d200000 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5134] <... close resumed>) = 0 [pid 5133] munmap(0x7f138d200000, 138412032 [pid 5138] <... mmap resumed>) = 0x7f138d200000 [pid 5136] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5134] creat("./file1", 000 [pid 5133] <... munmap resumed>) = 0 [pid 5137] <... ioctl resumed>) = 0 [pid 5138] 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"..., 524288 [pid 5137] close(3 [pid 5135] <... creat resumed>) = 4 [pid 5136] <... write resumed>) = 524288 [pid 5134] <... creat resumed>) = 5 [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5137] <... close resumed>) = 0 [pid 5135] rename("./bus", "./file2" [pid 5136] munmap(0x7f138d200000, 138412032 [pid 5134] exit_group(0 [pid 5133] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5137] close(4 [pid 5135] <... rename resumed>) = -1 EEXIST (File exists) [pid 5136] <... munmap resumed>) = 0 [pid 5134] <... exit_group resumed>) = ? [pid 5133] close(5 [pid 5137] <... close resumed>) = 0 [pid 5137] mkdir("./bus", 0777 [pid 5136] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5134] +++ exited with 0 +++ [pid 5138] <... write resumed>) = 524288 [pid 5137] <... mkdir resumed>) = 0 [pid 5135] memfd_create("syzkaller", 0 [pid 5133] <... close resumed>) = 0 [pid 5135] <... memfd_create resumed>) = 5 [pid 5133] creat("./file1", 000 [pid 5138] munmap(0x7f138d200000, 138412032 [pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5136] close(5 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 62.349417][ T5137] loop5: detected capacity change from 0 to 1024 [pid 5138] <... munmap resumed>) = 0 [pid 5137] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5135] <... mmap resumed>) = 0x7f138d200000 [pid 5136] <... close resumed>) = 0 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5138] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5133] <... creat resumed>) = 5 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5138] <... openat resumed>) = 4 [pid 5135] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5136] creat("./file1", 000 [pid 5133] exit_group(0 [pid 5138] ioctl(4, LOOP_SET_FD, 3 [pid 5133] <... exit_group resumed>) = ? [pid 5133] +++ exited with 0 +++ [pid 5060] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5136] <... creat resumed>) = 5 [pid 5056] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5136] exit_group(0 [pid 5137] <... mount resumed>) = 0 [pid 5136] <... exit_group resumed>) = ? [pid 5137] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5137] chdir("./bus") = 0 [pid 5137] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5137] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5136] +++ exited with 0 +++ [pid 5137] <... symlink resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5138] <... ioctl resumed>) = 0 [pid 5137] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5135] <... write resumed>) = 524288 [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5138] close(3 [pid 5056] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(3, "", [pid 5138] <... close resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5138] close(4 [pid 5135] munmap(0x7f138d200000, 138412032 [pid 5057] <... openat resumed>) = 3 [pid 5056] getdents64(3, [pid 5138] <... close resumed>) = 0 [pid 5135] <... munmap resumed>) = 0 [pid 5137] <... creat resumed>) = 4 [pid 5057] newfstatat(3, "", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5138] mkdir("./bus", 0777 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5137] rename("./bus", "./file2" [pid 5135] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5138] <... mkdir resumed>) = 0 [pid 5135] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5138] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5135] close(5 [pid 5060] newfstatat(AT_FDCWD, "./10/bus", [pid 5137] <... rename resumed>) = -1 EEXIST (File exists) [pid 5057] <... umount2 resumed>) = 0 [pid 5137] memfd_create("syzkaller", 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5137] <... memfd_create resumed>) = 5 [pid 5060] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(AT_FDCWD, "./11/bus", [pid 5056] <... umount2 resumed>) = 0 [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5138] <... mount resumed>) = 0 [pid 5137] <... mmap resumed>) = 0x7f138d200000 [pid 5135] <... close resumed>) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5138] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5138] chdir("./bus") = 0 [pid 5057] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5138] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... openat resumed>) = 4 [pid 5138] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5138] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5057] newfstatat(4, "", [pid 5137] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5135] creat("./file1", 000 [pid 5060] newfstatat(4, "", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5138] <... symlink resumed>) = 0 [pid 5135] <... creat resumed>) = 5 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5056] newfstatat(AT_FDCWD, "./10/bus", [pid 5138] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5135] exit_group(0 [pid 5060] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5135] <... exit_group resumed>) = ? [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] getdents64(4, [pid 5056] umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] getdents64(4, [pid 5060] close(4 [pid 5138] <... creat resumed>) = 4 [ 62.428057][ T5138] loop2: detected capacity change from 0 to 1024 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5138] rename("./bus", "./file2" [pid 5135] +++ exited with 0 +++ [pid 5060] <... close resumed>) = 0 [pid 5057] close(4 [pid 5056] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5137] <... write resumed>) = 524288 [pid 5060] rmdir("./10/bus" [pid 5138] <... rename resumed>) = -1 EEXIST (File exists) [pid 5137] munmap(0x7f138d200000, 138412032 [pid 5056] <... openat resumed>) = 4 [pid 5057] <... close resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5135, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5057] rmdir("./11/bus" [pid 5056] newfstatat(4, "", [pid 5137] <... munmap resumed>) = 0 [pid 5059] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5138] memfd_create("syzkaller", 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] getdents64(4, [pid 5138] <... memfd_create resumed>) = 5 [pid 5137] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... rmdir resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] getdents64(4, [pid 5138] <... mmap resumed>) = 0x7f138d200000 [pid 5137] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5137] close(5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(3, "", [pid 5056] close(4 [pid 5137] <... close resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] getdents64(3, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... close resumed>) = 0 [pid 5137] creat("./file1", 000 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./11/binderfs") = 0 [pid 5060] unlink("./10/binderfs" [pid 5059] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./10/bus" [pid 5138] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5137] <... creat resumed>) = 5 [pid 5060] <... unlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] <... rmdir resumed>) = 0 [pid 5138] <... write resumed>) = 524288 [pid 5137] exit_group(0 [pid 5060] getdents64(3, [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(3 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] close(3 [pid 5056] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5057] rmdir("./11" [pid 5137] <... exit_group resumed>) = ? [pid 5060] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5137] +++ exited with 0 +++ [pid 5060] rmdir("./10" [pid 5059] <... umount2 resumed>) = 0 [pid 5057] mkdir("./12", 0777 [pid 5056] unlink("./10/binderfs" [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] getdents64(3, [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5059] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... restart_syscall resumed>) = 0 [pid 5060] mkdir("./11", 0777 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] close(3 [pid 5061] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] newfstatat(AT_FDCWD, "./11/bus", [pid 5056] <... close resumed>) = 0 [pid 5138] munmap(0x7f138d200000, 138412032 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 3 [pid 5056] rmdir("./10" [pid 5138] <... munmap resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] newfstatat(3, "", [pid 5138] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] getdents64(3, [pid 5059] <... openat resumed>) = 4 [pid 5056] mkdir("./11", 0777 [pid 5138] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5138] close(5 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] newfstatat(4, "", [pid 5056] <... mkdir resumed>) = 0 [pid 5061] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5138] <... close resumed>) = 0 [pid 5059] getdents64(4, [pid 5138] creat("./file1", 000 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./11/bus" [pid 5138] <... creat resumed>) = 5 [pid 5138] exit_group(0) = ? [pid 5061] <... umount2 resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5061] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5138] +++ exited with 0 +++ [pid 5061] newfstatat(AT_FDCWD, "./12/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5061] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] unlink("./11/binderfs" [pid 5058] <... restart_syscall resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5059] close(3 [pid 5058] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5059] <... close resumed>) = 0 [pid 5061] newfstatat(4, "", [pid 5058] newfstatat(3, "", [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] rmdir("./11" [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(4, [pid 5059] <... rmdir resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... ioctl resumed>) = 0 [pid 5059] mkdir("./12", 0777 [pid 5056] close(3 [pid 5059] <... mkdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 5139 attached [pid 5139] set_robust_list(0x555556c07660, 24) = 0 [pid 5139] chdir("./11") = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5139 [pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5139] setpgid(0, 0) = 0 [pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] getdents64(4, [pid 5060] close(3 [pid 5059] <... openat resumed>) = 3 [pid 5057] close(3 [pid 5139] <... openat resumed>) = 3 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... close resumed>) = 0 [pid 5061] close(4 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 5140 attached [pid 5139] write(3, "1000", 4 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5139] <... write resumed>) = 4 [pid 5061] <... close resumed>) = 0 [pid 5139] close(3 [pid 5061] rmdir("./12/bus" [pid 5058] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5141 attached [pid 5140] set_robust_list(0x555556c07660, 24 [pid 5139] <... close resumed>) = 0 [pid 5141] set_robust_list(0x555556c07660, 24 [pid 5140] <... set_robust_list resumed>) = 0 [pid 5139] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5141] <... set_robust_list resumed>) = 0 [pid 5061] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./11/bus", [pid 5141] chdir("./12" [pid 5140] chdir("./11" [pid 5139] <... symlink resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5140 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5141] <... chdir resumed>) = 0 [pid 5140] <... chdir resumed>) = 0 [pid 5139] memfd_create("syzkaller", 0 [pid 5061] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5058] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5141 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5141] <... prctl resumed>) = 0 [pid 5061] unlink("./12/binderfs" [pid 5058] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5141] setpgid(0, 0) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] getdents64(3, [pid 5058] newfstatat(4, "", [pid 5141] <... openat resumed>) = 3 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5140] <... prctl resumed>) = 0 [pid 5139] <... memfd_create resumed>) = 3 [pid 5140] setpgid(0, 0 [pid 5139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5140] <... setpgid resumed>) = 0 [pid 5139] <... mmap resumed>) = 0x7f138d200000 [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5139] 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"..., 524288 [pid 5061] close(3 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] getdents64(4, [pid 5140] <... openat resumed>) = 3 [pid 5061] <... close resumed>) = 0 [pid 5140] write(3, "1000", 4 [pid 5061] rmdir("./12" [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5140] <... write resumed>) = 4 [pid 5140] close(3) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5058] getdents64(4, [pid 5141] write(3, "1000", 4 [pid 5061] mkdir("./13", 0777 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5141] <... write resumed>) = 4 [pid 5140] symlink("/dev/binderfs", "./binderfs" [pid 5139] <... write resumed>) = 524288 [pid 5061] <... mkdir resumed>) = 0 [pid 5058] close(4 [pid 5141] close(3 [pid 5140] <... symlink resumed>) = 0 [pid 5141] <... close resumed>) = 0 [pid 5140] memfd_create("syzkaller", 0 [pid 5058] <... close resumed>) = 0 [pid 5141] symlink("/dev/binderfs", "./binderfs" [pid 5058] rmdir("./11/bus" [pid 5141] <... symlink resumed>) = 0 [pid 5140] <... memfd_create resumed>) = 3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] close(3 [pid 5058] <... rmdir resumed>) = 0 [pid 5058] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... openat resumed>) = 3 [pid 5140] <... mmap resumed>) = 0x7f138d200000 [pid 5141] memfd_create("syzkaller", 0 [pid 5140] 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"..., 524288 [pid 5139] munmap(0x7f138d200000, 138412032 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5058] newfstatat(AT_FDCWD, "./11/binderfs", ./strace-static-x86_64: Process 5142 attached [pid 5141] <... memfd_create resumed>) = 3 [pid 5142] set_robust_list(0x555556c07660, 24 [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5139] <... munmap resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5142 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5142] <... set_robust_list resumed>) = 0 [pid 5141] <... mmap resumed>) = 0x7f138d200000 [pid 5058] unlink("./11/binderfs" [pid 5142] chdir("./12" [pid 5141] 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"..., 524288 [pid 5140] <... write resumed>) = 524288 [pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... unlink resumed>) = 0 [pid 5142] <... chdir resumed>) = 0 [pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] getdents64(3, [pid 5142] <... prctl resumed>) = 0 [pid 5139] <... openat resumed>) = 4 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5142] setpgid(0, 0 [pid 5058] close(3 [pid 5142] <... setpgid resumed>) = 0 [pid 5139] ioctl(4, LOOP_SET_FD, 3 [pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5139] <... ioctl resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5140] munmap(0x7f138d200000, 138412032) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5140] ioctl(4, LOOP_SET_FD, 3 [pid 5142] <... openat resumed>) = 3 [pid 5141] <... write resumed>) = 524288 [pid 5058] rmdir("./11" [pid 5142] write(3, "1000", 4) = 4 [pid 5142] close(3 [pid 5058] <... rmdir resumed>) = 0 [pid 5139] close(3) = 0 [pid 5139] close(4 [pid 5142] <... close resumed>) = 0 [pid 5139] <... close resumed>) = 0 [pid 5139] mkdir("./bus", 0777) = 0 [pid 5139] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5142] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... ioctl resumed>) = 0 [pid 5142] <... symlink resumed>) = 0 [pid 5058] mkdir("./12", 0777 [pid 5139] <... mount resumed>) = 0 [pid 5139] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5058] <... mkdir resumed>) = 0 [pid 5142] memfd_create("syzkaller", 0 [pid 5141] munmap(0x7f138d200000, 138412032 [pid 5139] <... openat resumed>) = 3 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5142] <... memfd_create resumed>) = 3 [pid 5141] <... munmap resumed>) = 0 [pid 5140] <... ioctl resumed>) = 0 [pid 5139] chdir("./bus" [pid 5058] <... openat resumed>) = 3 [pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5141] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5140] close(3 [pid 5139] <... chdir resumed>) = 0 [pid 5061] close(3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5141] <... openat resumed>) = 4 [pid 5140] <... close resumed>) = 0 [pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... close resumed>) = 0 [pid 5142] <... mmap resumed>) = 0x7f138d200000 [pid 5141] ioctl(4, LOOP_SET_FD, 3 [pid 5140] close(4 [pid 5139] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 62.686777][ T5139] loop0: detected capacity change from 0 to 1024 [ 62.699801][ T5140] loop4: detected capacity change from 0 to 1024 [pid 5140] <... close resumed>) = 0 [pid 5139] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5140] mkdir("./bus", 0777) = 0 [pid 5140] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5142] 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"..., 524288 [pid 5139] <... symlink resumed>) = 0 [pid 5139] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000./strace-static-x86_64: Process 5143 attached [pid 5143] set_robust_list(0x555556c07660, 24 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5143 [pid 5143] <... set_robust_list resumed>) = 0 [pid 5143] chdir("./13") = 0 [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5143] setpgid(0, 0) = 0 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5141] <... ioctl resumed>) = 0 [pid 5139] <... creat resumed>) = 4 [pid 5143] write(3, "1000", 4 [pid 5139] rename("./bus", "./file2" [pid 5143] <... write resumed>) = 4 [pid 5141] close(3 [pid 5143] close(3) = 0 [pid 5141] <... close resumed>) = 0 [pid 5139] <... rename resumed>) = -1 EEXIST (File exists) [pid 5143] symlink("/dev/binderfs", "./binderfs" [pid 5141] close(4 [pid 5139] memfd_create("syzkaller", 0 [pid 5143] <... symlink resumed>) = 0 [pid 5141] <... close resumed>) = 0 [pid 5139] <... memfd_create resumed>) = 5 [pid 5141] mkdir("./bus", 0777 [pid 5143] memfd_create("syzkaller", 0 [pid 5142] <... write resumed>) = 524288 [pid 5139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5141] <... mkdir resumed>) = 0 [pid 5139] <... mmap resumed>) = 0x7f138d200000 [pid 5143] <... memfd_create resumed>) = 3 [pid 5142] munmap(0x7f138d200000, 138412032 [pid 5141] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5140] <... mount resumed>) = 0 [pid 5139] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] <... ioctl resumed>) = 0 [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5140] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5143] <... mmap resumed>) = 0x7f138d200000 [pid 5140] <... openat resumed>) = 3 [pid 5142] <... munmap resumed>) = 0 [pid 5058] close(3 [pid 5143] 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"..., 524288 [pid 5142] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5141] <... mount resumed>) = 0 [pid 5140] chdir("./bus" [pid 5058] <... close resumed>) = 0 [pid 5141] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5142] <... openat resumed>) = 4 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5141] <... openat resumed>) = 3 [pid 5140] <... chdir resumed>) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 5144 attached [pid 5142] ioctl(4, LOOP_SET_FD, 3 [pid 5141] chdir("./bus" [ 62.731942][ T5141] loop1: detected capacity change from 0 to 1024 [pid 5140] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5144] set_robust_list(0x555556c07660, 24 [pid 5141] <... chdir resumed>) = 0 [pid 5139] <... write resumed>) = 524288 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5144 [pid 5144] <... set_robust_list resumed>) = 0 [pid 5143] <... write resumed>) = 524288 [pid 5141] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5140] <... symlink resumed>) = 0 [pid 5140] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5141] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5144] chdir("./12" [pid 5141] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5144] <... chdir resumed>) = 0 [pid 5139] munmap(0x7f138d200000, 138412032 [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5142] <... ioctl resumed>) = 0 [pid 5141] <... symlink resumed>) = 0 [pid 5140] <... creat resumed>) = 4 [pid 5139] <... munmap resumed>) = 0 [pid 5144] <... prctl resumed>) = 0 [pid 5141] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5140] rename("./bus", "./file2" [pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5144] setpgid(0, 0 [pid 5143] munmap(0x7f138d200000, 138412032 [pid 5140] <... rename resumed>) = -1 EEXIST (File exists) [pid 5144] <... setpgid resumed>) = 0 [pid 5142] close(3 [pid 5141] <... creat resumed>) = 4 [pid 5140] memfd_create("syzkaller", 0 [pid 5139] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5143] <... munmap resumed>) = 0 [pid 5142] <... close resumed>) = 0 [pid 5141] rename("./bus", "./file2" [pid 5140] <... memfd_create resumed>) = 5 [pid 5143] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5142] close(4 [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5139] close(5 [pid 5144] <... openat resumed>) = 3 [pid 5143] <... openat resumed>) = 4 [pid 5142] <... close resumed>) = 0 [pid 5141] <... rename resumed>) = -1 EEXIST (File exists) [pid 5140] <... mmap resumed>) = 0x7f138d200000 [pid 5142] mkdir("./bus", 0777 [pid 5141] memfd_create("syzkaller", 0 [pid 5144] write(3, "1000", 4 [pid 5142] <... mkdir resumed>) = 0 [pid 5141] <... memfd_create resumed>) = 5 [pid 5144] <... write resumed>) = 4 [pid 5143] ioctl(4, LOOP_SET_FD, 3 [pid 5142] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5144] close(3 [pid 5140] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5144] <... close resumed>) = 0 [pid 5141] <... mmap resumed>) = 0x7f138d200000 [pid 5139] <... close resumed>) = 0 [pid 5144] symlink("/dev/binderfs", "./binderfs" [pid 5142] <... mount resumed>) = 0 [pid 5139] creat("./file1", 000 [pid 5142] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5144] <... symlink resumed>) = 0 [pid 5142] chdir("./bus" [pid 5144] memfd_create("syzkaller", 0 [pid 5142] <... chdir resumed>) = 0 [pid 5141] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5140] <... write resumed>) = 524288 [pid 5139] <... creat resumed>) = 5 [pid 5144] <... memfd_create resumed>) = 3 [pid 5142] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5139] exit_group(0 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5143] <... ioctl resumed>) = 0 [pid 5142] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5140] munmap(0x7f138d200000, 138412032 [pid 5139] <... exit_group resumed>) = ? [pid 5144] <... mmap resumed>) = 0x7f138d200000 [pid 5143] close(3 [pid 5140] <... munmap resumed>) = 0 [pid 5142] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5139] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5139, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5143] <... close resumed>) = 0 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5143] close(4 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5143] <... close resumed>) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5143] mkdir("./bus", 0777 [pid 5142] <... symlink resumed>) = 0 [pid 5140] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5143] <... mkdir resumed>) = 0 [pid 5056] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5140] close(5 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5143] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5142] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5140] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [ 62.784487][ T5142] loop3: detected capacity change from 0 to 1024 [ 62.820083][ T5143] loop5: detected capacity change from 0 to 1024 [pid 5056] newfstatat(3, "", [pid 5144] 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"..., 524288 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5140] creat("./file1", 000 [pid 5142] <... creat resumed>) = 4 [pid 5141] <... write resumed>) = 524288 [pid 5143] <... mount resumed>) = 0 [pid 5142] rename("./bus", "./file2" [pid 5141] munmap(0x7f138d200000, 138412032 [pid 5056] <... umount2 resumed>) = 0 [pid 5143] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5141] <... munmap resumed>) = 0 [pid 5142] <... rename resumed>) = -1 EEXIST (File exists) [pid 5141] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5143] <... openat resumed>) = 3 [pid 5141] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5140] <... creat resumed>) = 5 [pid 5143] chdir("./bus" [pid 5142] memfd_create("syzkaller", 0 [pid 5141] close(5 [pid 5140] exit_group(0 [pid 5143] <... chdir resumed>) = 0 [pid 5140] <... exit_group resumed>) = ? [pid 5144] <... write resumed>) = 524288 [pid 5143] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5140] +++ exited with 0 +++ [pid 5056] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5142] <... memfd_create resumed>) = 5 [pid 5143] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5143] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5141] <... close resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./11/bus", [pid 5142] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5143] <... symlink resumed>) = 0 [pid 5060] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5143] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5142] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5144] munmap(0x7f138d200000, 138412032 [pid 5060] <... openat resumed>) = 3 [pid 5056] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] newfstatat(3, "", [pid 5056] <... openat resumed>) = 4 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(4, "", [pid 5060] getdents64(3, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5144] <... munmap resumed>) = 0 [pid 5141] creat("./file1", 000 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] getdents64(4, [pid 5144] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5143] <... creat resumed>) = 4 [pid 5060] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5144] <... openat resumed>) = 4 [pid 5143] rename("./bus", "./file2" [pid 5144] ioctl(4, LOOP_SET_FD, 3 [pid 5056] getdents64(4, [pid 5143] <... rename resumed>) = -1 EEXIST (File exists) [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4 [pid 5143] memfd_create("syzkaller", 0 [pid 5056] <... close resumed>) = 0 [pid 5143] <... memfd_create resumed>) = 5 [pid 5056] rmdir("./11/bus" [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5144] <... ioctl resumed>) = 0 [pid 5143] <... mmap resumed>) = 0x7f138d200000 [pid 5142] <... write resumed>) = 524288 [pid 5141] <... creat resumed>) = 5 [pid 5060] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5141] exit_group(0 [pid 5060] newfstatat(AT_FDCWD, "./11/bus", [pid 5144] close(3 [pid 5142] munmap(0x7f138d200000, 138412032 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5144] <... close resumed>) = 0 [pid 5143] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5144] close(4 [pid 5141] <... exit_group resumed>) = ? [pid 5142] <... munmap resumed>) = 0 [pid 5142] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5144] <... close resumed>) = 0 [pid 5142] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5141] +++ exited with 0 +++ [pid 5060] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5144] mkdir("./bus", 0777 [pid 5142] close(5 [pid 5060] <... openat resumed>) = 4 [pid 5144] <... mkdir resumed>) = 0 [pid 5060] newfstatat(4, "", [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(4, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] getdents64(4, [pid 5057] <... openat resumed>) = 3 [pid 5056] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5144] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] newfstatat(3, "", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] close(4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5142] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] newfstatat(AT_FDCWD, "./11/binderfs", [pid 5060] rmdir("./11/bus" [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [ 62.910788][ T5144] loop2: detected capacity change from 0 to 1024 [pid 5056] unlink("./11/binderfs" [pid 5142] creat("./file1", 000 [pid 5056] <... unlink resumed>) = 0 [pid 5060] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5144] <... mount resumed>) = 0 [pid 5142] <... creat resumed>) = 5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5142] exit_group(0 [pid 5060] newfstatat(AT_FDCWD, "./11/binderfs", [pid 5144] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5144] <... openat resumed>) = 3 [pid 5143] <... write resumed>) = 524288 [pid 5142] <... exit_group resumed>) = ? [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5144] chdir("./bus" [pid 5056] close(3 [pid 5144] <... chdir resumed>) = 0 [pid 5060] unlink("./11/binderfs" [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./11" [pid 5144] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... unlink resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5144] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5143] munmap(0x7f138d200000, 138412032 [pid 5060] getdents64(3, [pid 5056] mkdir("./12", 0777 [pid 5142] +++ exited with 0 +++ [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5144] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] <... mkdir resumed>) = 0 [pid 5143] <... munmap resumed>) = 0 [pid 5060] close(3) = 0 [pid 5057] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5143] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] rmdir("./11" [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5060] <... rmdir resumed>) = 0 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5056] <... openat resumed>) = 3 [pid 5143] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5143] close(5 [pid 5060] mkdir("./12", 0777 [pid 5144] <... symlink resumed>) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5059] <... restart_syscall resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5144] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] newfstatat(AT_FDCWD, "./12/bus", [pid 5056] <... ioctl resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] close(3 [pid 5057] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 3 [pid 5057] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5143] <... close resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5057] <... openat resumed>) = 4 [pid 5056] <... close resumed>) = 0 [pid 5059] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5145 attached [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(4, "", [pid 5145] set_robust_list(0x555556c07660, 24 [pid 5060] close(3 [pid 5059] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5145 [pid 5145] <... set_robust_list resumed>) = 0 [pid 5143] creat("./file1", 000 [pid 5060] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5057] getdents64(4, [pid 5145] chdir("./12" [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5144] <... creat resumed>) = 4 [pid 5145] <... chdir resumed>) = 0 [pid 5059] newfstatat(3, "", [pid 5057] getdents64(4, [pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5145] setpgid(0, 0 [pid 5144] rename("./bus", "./file2" [pid 5143] <... creat resumed>) = 5 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5145] <... setpgid resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] getdents64(3, ./strace-static-x86_64: Process 5146 attached [pid 5145] <... openat resumed>) = 3 [pid 5143] exit_group(0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5146 [pid 5057] close(4 [pid 5145] write(3, "1000", 4 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5146] set_robust_list(0x555556c07660, 24 [pid 5144] <... rename resumed>) = -1 EEXIST (File exists) [pid 5143] <... exit_group resumed>) = ? [pid 5057] <... close resumed>) = 0 [pid 5146] <... set_robust_list resumed>) = 0 [pid 5145] <... write resumed>) = 4 [pid 5144] memfd_create("syzkaller", 0 [pid 5143] +++ exited with 0 +++ [pid 5057] rmdir("./12/bus" [pid 5146] chdir("./12" [pid 5145] close(3 [pid 5144] <... memfd_create resumed>) = 5 [pid 5059] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... rmdir resumed>) = 0 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5146] <... chdir resumed>) = 0 [pid 5144] <... mmap resumed>) = 0x7f138d200000 [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5057] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5145] <... close resumed>) = 0 [pid 5144] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... restart_syscall resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5146] <... prctl resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5146] setpgid(0, 0 [pid 5145] symlink("/dev/binderfs", "./binderfs" [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5146] <... setpgid resumed>) = 0 [pid 5061] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5145] <... symlink resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] unlink("./12/binderfs" [pid 5146] <... openat resumed>) = 3 [pid 5061] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... unlink resumed>) = 0 [pid 5146] write(3, "1000", 4 [pid 5145] memfd_create("syzkaller", 0 [pid 5061] <... openat resumed>) = 3 [pid 5057] getdents64(3, [pid 5146] <... write resumed>) = 4 [pid 5145] <... memfd_create resumed>) = 3 [pid 5061] newfstatat(3, "", [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5144] <... write resumed>) = 524288 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] close(3 [pid 5146] close(3 [pid 5145] <... mmap resumed>) = 0x7f138d200000 [pid 5061] getdents64(3, [pid 5057] <... close resumed>) = 0 [pid 5059] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5146] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] rmdir("./12" [pid 5061] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] newfstatat(AT_FDCWD, "./12/bus", [pid 5057] <... rmdir resumed>) = 0 [pid 5146] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] mkdir("./13", 0777 [pid 5059] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5146] <... symlink resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... mkdir resumed>) = 0 [pid 5146] memfd_create("syzkaller", 0 [pid 5145] 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"..., 524288 [pid 5059] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5146] <... memfd_create resumed>) = 3 [pid 5059] <... openat resumed>) = 4 [pid 5057] <... openat resumed>) = 3 [pid 5059] newfstatat(4, "", [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5146] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5144] munmap(0x7f138d200000, 138412032) = 0 [pid 5059] getdents64(4, [pid 5146] 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"..., 524288 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5144] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5144] close(5 [pid 5061] <... umount2 resumed>) = 0 [pid 5059] getdents64(4, [pid 5146] <... write resumed>) = 524288 [pid 5061] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5145] <... write resumed>) = 524288 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(4 [pid 5057] <... ioctl resumed>) = 0 [pid 5145] munmap(0x7f138d200000, 138412032 [pid 5061] newfstatat(AT_FDCWD, "./13/bus", [pid 5059] <... close resumed>) = 0 [pid 5145] <... munmap resumed>) = 0 [pid 5144] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] rmdir("./12/bus" [pid 5061] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5144] creat("./file1", 000 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] close(3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] <... close resumed>) = 0 [pid 5061] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5146] munmap(0x7f138d200000, 138412032 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] getdents64(4, ./strace-static-x86_64: Process 5147 attached [pid 5144] <... creat resumed>) = 5 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5147] set_robust_list(0x555556c07660, 24 [pid 5146] <... munmap resumed>) = 0 [pid 5147] <... set_robust_list resumed>) = 0 [pid 5144] exit_group(0 [pid 5061] getdents64(4, [pid 5146] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5145] <... openat resumed>) = 4 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5145] ioctl(4, LOOP_SET_FD, 3 [pid 5061] close(4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5147] chdir("./13" [pid 5146] <... openat resumed>) = 4 [pid 5144] <... exit_group resumed>) = ? [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5147 [pid 5147] <... chdir resumed>) = 0 [pid 5146] ioctl(4, LOOP_SET_FD, 3 [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5144] +++ exited with 0 +++ [pid 5061] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5147] <... prctl resumed>) = 0 [pid 5061] rmdir("./13/bus" [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5147] setpgid(0, 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] unlink("./12/binderfs" [pid 5147] <... setpgid resumed>) = 0 [pid 5061] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... unlink resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(3, [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3 [pid 5147] <... openat resumed>) = 3 [pid 5061] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./12" [pid 5058] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5147] write(3, "1000", 4 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5147] <... write resumed>) = 4 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5147] close(3 [pid 5059] mkdir("./13", 0777 [pid 5058] <... openat resumed>) = 3 [pid 5147] <... close resumed>) = 0 [pid 5147] symlink("/dev/binderfs", "./binderfs" [pid 5061] unlink("./13/binderfs" [pid 5059] <... mkdir resumed>) = 0 [pid 5058] newfstatat(3, "", [pid 5147] <... symlink resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5147] memfd_create("syzkaller", 0 [pid 5058] getdents64(3, [pid 5147] <... memfd_create resumed>) = 3 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5147] <... mmap resumed>) = 0x7f138d200000 [pid 5147] 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"..., 524288 [pid 5058] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5145] <... ioctl resumed>) = 0 [pid 5145] close(3) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5145] close(4 [pid 5061] close(3 [pid 5145] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5145] mkdir("./bus", 0777 [pid 5061] rmdir("./13") = 0 [pid 5145] <... mkdir resumed>) = 0 [pid 5061] mkdir("./14", 0777) = 0 [pid 5145] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5146] <... ioctl resumed>) = 0 [pid 5146] close(3) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5146] close(4) = 0 [ 63.157082][ T5145] loop0: detected capacity change from 0 to 1024 [ 63.159562][ T5146] loop4: detected capacity change from 0 to 1024 [pid 5146] mkdir("./bus", 0777 [pid 5147] <... write resumed>) = 524288 [pid 5146] <... mkdir resumed>) = 0 [pid 5058] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5145] <... mount resumed>) = 0 [pid 5145] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5145] chdir("./bus") = 0 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5146] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5145] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] newfstatat(AT_FDCWD, "./12/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5145] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5145] <... symlink resumed>) = 0 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5147] munmap(0x7f138d200000, 138412032) = 0 [pid 5145] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5147] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5147] ioctl(4, LOOP_SET_FD, 3 [pid 5146] <... mount resumed>) = 0 [pid 5146] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] <... ioctl resumed>) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5146] <... openat resumed>) = 3 [pid 5146] chdir("./bus") = 0 [pid 5146] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5146] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... ioctl resumed>) = 0 [pid 5058] close(4 [pid 5146] <... symlink resumed>) = 0 [pid 5146] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5147] <... ioctl resumed>) = 0 [pid 5146] <... creat resumed>) = 4 [pid 5145] <... creat resumed>) = 4 [pid 5061] close(3 [pid 5059] close(3 [pid 5058] <... close resumed>) = 0 [pid 5146] rename("./bus", "./file2" [pid 5145] rename("./bus", "./file2" [pid 5058] rmdir("./12/bus" [pid 5146] <... rename resumed>) = -1 EEXIST (File exists) [pid 5147] close(3 [pid 5146] memfd_create("syzkaller", 0 [pid 5147] <... close resumed>) = 0 [pid 5146] <... memfd_create resumed>) = 5 [pid 5145] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5147] close(4 [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5145] memfd_create("syzkaller", 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5147] <... close resumed>) = 0 [pid 5146] <... mmap resumed>) = 0x7f138d200000 [pid 5145] <... memfd_create resumed>) = 5 [pid 5147] mkdir("./bus", 0777 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./12/binderfs", ./strace-static-x86_64: Process 5148 attached [pid 5148] set_robust_list(0x555556c07660, 24 [pid 5147] <... mkdir resumed>) = 0 [pid 5145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5149 [pid 5058] unlink("./12/binderfs" [pid 5148] <... set_robust_list resumed>) = 0 [pid 5147] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5146] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5145] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 5149 attached [pid 5148] chdir("./14" [pid 5058] getdents64(3, [pid 5149] set_robust_list(0x555556c07660, 24 [pid 5148] <... chdir resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5058] <... close resumed>) = 0 [pid 5149] <... set_robust_list resumed>) = 0 [ 63.252649][ T5147] loop1: detected capacity change from 0 to 1024 [pid 5148] setpgid(0, 0 [pid 5058] rmdir("./12" [pid 5148] <... setpgid resumed>) = 0 [pid 5145] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5148 [pid 5149] chdir("./13" [pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5146] <... write resumed>) = 524288 [pid 5145] <... write resumed>) = 524288 [pid 5058] <... rmdir resumed>) = 0 [pid 5149] <... chdir resumed>) = 0 [pid 5148] <... openat resumed>) = 3 [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5148] write(3, "1000", 4 [pid 5145] munmap(0x7f138d200000, 138412032 [pid 5149] <... prctl resumed>) = 0 [pid 5148] <... write resumed>) = 4 [pid 5058] mkdir("./13", 0777 [pid 5149] setpgid(0, 0 [pid 5148] close(3 [pid 5147] <... mount resumed>) = 0 [pid 5146] munmap(0x7f138d200000, 138412032 [pid 5145] <... munmap resumed>) = 0 [pid 5149] <... setpgid resumed>) = 0 [pid 5148] <... close resumed>) = 0 [pid 5147] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5148] symlink("/dev/binderfs", "./binderfs" [pid 5147] <... openat resumed>) = 3 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... mkdir resumed>) = 0 [pid 5149] <... openat resumed>) = 3 [pid 5148] <... symlink resumed>) = 0 [pid 5147] chdir("./bus" [pid 5146] <... munmap resumed>) = 0 [pid 5145] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5149] write(3, "1000", 4 [pid 5148] memfd_create("syzkaller", 0 [pid 5147] <... chdir resumed>) = 0 [pid 5149] <... write resumed>) = 4 [pid 5148] <... memfd_create resumed>) = 3 [pid 5147] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5146] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5145] close(5 [pid 5058] <... openat resumed>) = 3 [pid 5149] close(3 [pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5147] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5146] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5145] <... close resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5149] <... close resumed>) = 0 [pid 5148] <... mmap resumed>) = 0x7f138d200000 [pid 5147] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5149] symlink("/dev/binderfs", "./binderfs" [pid 5146] close(5 [pid 5149] <... symlink resumed>) = 0 [pid 5147] <... symlink resumed>) = 0 [pid 5145] creat("./file1", 000 [pid 5149] memfd_create("syzkaller", 0 [pid 5147] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5149] <... memfd_create resumed>) = 3 [pid 5149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5147] <... creat resumed>) = 4 [pid 5148] 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"..., 524288) = 524288 [pid 5147] rename("./bus", "./file2" [pid 5146] <... close resumed>) = 0 [pid 5145] <... creat resumed>) = 5 [pid 5149] 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"..., 524288 [pid 5148] munmap(0x7f138d200000, 138412032 [pid 5147] <... rename resumed>) = -1 EEXIST (File exists) [pid 5146] creat("./file1", 000 [pid 5147] memfd_create("syzkaller", 0 [pid 5145] exit_group(0 [pid 5147] <... memfd_create resumed>) = 5 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5145] <... exit_group resumed>) = ? [pid 5149] <... write resumed>) = 524288 [pid 5148] <... munmap resumed>) = 0 [pid 5147] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5145] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5145, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5148] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5146] <... creat resumed>) = 5 [pid 5056] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5148] <... openat resumed>) = 4 [pid 5146] exit_group(0 [pid 5149] munmap(0x7f138d200000, 138412032 [pid 5148] ioctl(4, LOOP_SET_FD, 3 [pid 5146] <... exit_group resumed>) = ? [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5147] <... write resumed>) = 524288 [pid 5147] munmap(0x7f138d200000, 138412032) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] newfstatat(3, "", [pid 5147] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5147] close(5 [pid 5146] +++ exited with 0 +++ [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5149] <... munmap resumed>) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5146, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] getdents64(3, [pid 5149] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5148] <... ioctl resumed>) = 0 [pid 5058] close(3 [pid 5149] <... openat resumed>) = 4 [pid 5148] close(3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5149] ioctl(4, LOOP_SET_FD, 3 [pid 5148] <... close resumed>) = 0 [pid 5060] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... close resumed>) = 0 [pid 5056] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5148] close(4 [pid 5147] <... close resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5148] <... close resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5150 attached [pid 5148] mkdir("./bus", 0777 [pid 5060] <... openat resumed>) = 3 [pid 5150] set_robust_list(0x555556c07660, 24) = 0 [pid 5148] <... mkdir resumed>) = 0 [pid 5060] newfstatat(3, "", [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5150 [pid 5056] <... umount2 resumed>) = 0 [pid 5150] chdir("./13" [pid 5148] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5147] creat("./file1", 000 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(AT_FDCWD, "./12/bus", [pid 5150] <... chdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5149] <... ioctl resumed>) = 0 [pid 5056] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5149] close(3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5150] <... prctl resumed>) = 0 [pid 5149] <... close resumed>) = 0 [pid 5147] <... creat resumed>) = 5 [pid 5150] setpgid(0, 0 [pid 5149] close(4 [pid 5148] <... mount resumed>) = 0 [pid 5147] exit_group(0 [pid 5056] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5150] <... setpgid resumed>) = 0 [pid 5149] <... close resumed>) = 0 [pid 5148] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5147] <... exit_group resumed>) = ? [pid 5056] <... openat resumed>) = 4 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5149] mkdir("./bus", 0777 [pid 5148] <... openat resumed>) = 3 [pid 5147] +++ exited with 0 +++ [pid 5148] chdir("./bus" [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5147, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] newfstatat(4, "", [pid 5148] <... chdir resumed>) = 0 [pid 5150] <... openat resumed>) = 3 [pid 5149] <... mkdir resumed>) = 0 [pid 5148] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5150] write(3, "1000", 4 [pid 5148] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5150] <... write resumed>) = 4 [pid 5148] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5150] close(3 [pid 5149] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5150] <... close resumed>) = 0 [ 63.381603][ T5148] loop5: detected capacity change from 0 to 1024 [ 63.400211][ T5149] loop3: detected capacity change from 0 to 1024 [pid 5150] symlink("/dev/binderfs", "./binderfs" [pid 5056] getdents64(4, [pid 5057] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5150] <... symlink resumed>) = 0 [pid 5060] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(4, [pid 5150] memfd_create("syzkaller", 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5150] <... memfd_create resumed>) = 3 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5149] <... mount resumed>) = 0 [pid 5148] <... symlink resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./12/bus", [pid 5057] <... openat resumed>) = 3 [pid 5056] close(4 [pid 5150] <... mmap resumed>) = 0x7f138d200000 [pid 5149] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5148] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5150] 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"..., 524288 [pid 5149] <... openat resumed>) = 3 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(3, "", [pid 5056] <... close resumed>) = 0 [pid 5148] <... creat resumed>) = 4 [pid 5060] umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] rmdir("./12/bus" [pid 5148] rename("./bus", "./file2" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(3, [pid 5149] chdir("./bus" [pid 5150] <... write resumed>) = 524288 [pid 5148] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... rmdir resumed>) = 0 [pid 5150] munmap(0x7f138d200000, 138412032 [pid 5060] <... openat resumed>) = 4 [pid 5150] <... munmap resumed>) = 0 [pid 5148] memfd_create("syzkaller", 0 [pid 5060] newfstatat(4, "", [pid 5057] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5150] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5150] <... openat resumed>) = 4 [pid 5149] <... chdir resumed>) = 0 [pid 5148] <... memfd_create resumed>) = 5 [pid 5060] getdents64(4, [pid 5056] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5150] ioctl(4, LOOP_SET_FD, 3 [pid 5149] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5149] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] getdents64(4, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5150] <... ioctl resumed>) = 0 [pid 5148] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5149] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] close(4 [pid 5056] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5149] <... symlink resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5149] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5148] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... close resumed>) = 0 [pid 5056] unlink("./12/binderfs") = 0 [pid 5060] rmdir("./12/bus" [pid 5149] <... creat resumed>) = 4 [pid 5149] rename("./bus", "./file2" [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] getdents64(3, [pid 5060] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] close(3 [pid 5149] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5056] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] rmdir("./12" [pid 5057] newfstatat(AT_FDCWD, "./13/bus", [pid 5149] memfd_create("syzkaller", 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5149] <... memfd_create resumed>) = 5 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5150] close(3 [pid 5149] <... mmap resumed>) = 0x7f138d200000 [pid 5060] unlink("./12/binderfs" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5148] <... write resumed>) = 524288 [pid 5150] <... close resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5150] close(4 [pid 5148] munmap(0x7f138d200000, 138412032 [pid 5060] <... unlink resumed>) = 0 [pid 5056] mkdir("./13", 0777 [pid 5150] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5150] mkdir("./bus", 0777 [pid 5060] getdents64(3, [pid 5150] <... mkdir resumed>) = 0 [pid 5148] <... munmap resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] newfstatat(4, "", [pid 5056] <... mkdir resumed>) = 0 [pid 5150] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] close(3 [pid 5149] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5057] getdents64(4, [pid 5148] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... close resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5148] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] rmdir("./12" [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5149] <... write resumed>) = 524288 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] getdents64(4, [pid 5056] <... openat resumed>) = 3 [pid 5148] close(5 [pid 5060] mkdir("./13", 0777 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [ 63.487631][ T5150] loop2: detected capacity change from 0 to 1024 [pid 5057] close(4 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5150] <... mount resumed>) = 0 [pid 5150] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5148] <... close resumed>) = 0 [pid 5057] rmdir("./13/bus" [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5150] chdir("./bus") = 0 [pid 5149] munmap(0x7f138d200000, 138412032 [pid 5150] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5149] <... munmap resumed>) = 0 [pid 5148] creat("./file1", 000 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] <... rmdir resumed>) = 0 [pid 5150] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5150] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5149] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] <... openat resumed>) = 3 [pid 5057] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5149] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5150] <... symlink resumed>) = 0 [pid 5149] close(5 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5057] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./13/binderfs" [pid 5150] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] <... unlink resumed>) = 0 [pid 5149] <... close resumed>) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./13" [pid 5150] <... creat resumed>) = 4 [pid 5150] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5057] <... rmdir resumed>) = 0 [pid 5150] memfd_create("syzkaller", 0 [pid 5057] mkdir("./14", 0777 [pid 5150] <... memfd_create resumed>) = 5 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5148] <... creat resumed>) = 5 [pid 5057] <... mkdir resumed>) = 0 [pid 5148] exit_group(0 [pid 5149] creat("./file1", 000 [pid 5148] <... exit_group resumed>) = ? [pid 5150] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5149] <... creat resumed>) = 5 [pid 5149] exit_group(0 [pid 5148] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5148, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5061] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5149] <... exit_group resumed>) = ? [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5149] +++ exited with 0 +++ [pid 5061] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=6 /* 0.06 s */} --- [pid 5061] <... openat resumed>) = 3 [pid 5061] newfstatat(3, "", [pid 5059] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] getdents64(3, [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5150] <... write resumed>) = 524288 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] close(3 [pid 5056] <... ioctl resumed>) = 0 [pid 5150] munmap(0x7f138d200000, 138412032 [pid 5061] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... close resumed>) = 0 [pid 5150] <... munmap resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5150] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5150] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(3./strace-static-x86_64: Process 5151 attached ) = 0 [pid 5151] set_robust_list(0x555556c07660, 24 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5151] <... set_robust_list resumed>) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5151 [pid 5059] newfstatat(AT_FDCWD, "./13/bus", ./strace-static-x86_64: Process 5152 attached [pid 5151] chdir("./13" [pid 5152] set_robust_list(0x555556c07660, 24) = 0 [pid 5151] <... chdir resumed>) = 0 [pid 5150] close(5 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5152 [pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5152] chdir("./13" [pid 5151] <... prctl resumed>) = 0 [pid 5150] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5152] <... chdir resumed>) = 0 [pid 5151] setpgid(0, 0 [pid 5059] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5152] <... prctl resumed>) = 0 [pid 5061] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5152] setpgid(0, 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... openat resumed>) = 4 [pid 5152] <... setpgid resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./14/bus", [pid 5059] newfstatat(4, "", [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5152] <... openat resumed>) = 3 [pid 5061] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(4, [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] getdents64(4, [pid 5152] write(3, "1000", 4 [pid 5061] <... openat resumed>) = 4 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5152] <... write resumed>) = 4 [pid 5061] newfstatat(4, "", [pid 5059] close(4 [pid 5152] close(3 [pid 5150] creat("./file1", 000 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... close resumed>) = 0 [pid 5152] <... close resumed>) = 0 [pid 5061] getdents64(4, [pid 5059] rmdir("./13/bus" [pid 5152] symlink("/dev/binderfs", "./binderfs" [pid 5151] <... setpgid resumed>) = 0 [pid 5152] <... symlink resumed>) = 0 [pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... rmdir resumed>) = 0 [pid 5151] write(3, "1000", 4 [pid 5057] <... ioctl resumed>) = 0 [pid 5151] <... write resumed>) = 4 [pid 5061] getdents64(4, [pid 5059] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(3 [pid 5151] close(3 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... close resumed>) = 0 [pid 5151] <... close resumed>) = 0 [pid 5061] close(4 [pid 5059] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5151] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5152] memfd_create("syzkaller", 0 [pid 5151] <... symlink resumed>) = 0 [pid 5061] rmdir("./14/bus" [pid 5059] unlink("./13/binderfs" [pid 5152] <... memfd_create resumed>) = 3 [pid 5150] <... creat resumed>) = 5 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5150] exit_group(0 [pid 5061] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5152] <... mmap resumed>) = 0x7f138d200000 [pid 5151] memfd_create("syzkaller", 0 [pid 5150] <... exit_group resumed>) = ? [pid 5150] +++ exited with 0 +++ [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5152] 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"..., 524288 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(3 [pid 5151] <... memfd_create resumed>) = 3 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5058] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] rmdir("./13" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5153 attached [pid 5061] unlink("./14/binderfs" [pid 5059] <... rmdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5153] set_robust_list(0x555556c07660, 24 [pid 5061] <... unlink resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5153] <... set_robust_list resumed>) = 0 [pid 5061] getdents64(3, [pid 5059] mkdir("./14", 0777 [pid 5058] newfstatat(3, "", [pid 5153] chdir("./14" [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] close(3 [pid 5058] getdents64(3, [pid 5153] <... chdir resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] rmdir("./14" [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5153] <... prctl resumed>) = 0 [pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5153 [pid 5153] setpgid(0, 0 [pid 5152] <... write resumed>) = 524288 [pid 5151] <... mmap resumed>) = 0x7f138d200000 [pid 5061] mkdir("./15", 0777 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] <... umount2 resumed>) = 0 [pid 5153] <... setpgid resumed>) = 0 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5061] <... mkdir resumed>) = 0 [pid 5153] write(3, "1000", 4) = 4 [pid 5153] close(3 [pid 5151] 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"..., 524288 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5153] <... close resumed>) = 0 [pid 5153] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5153] memfd_create("syzkaller", 0 [pid 5058] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./13/bus", [pid 5153] <... memfd_create resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5153] <... mmap resumed>) = 0x7f138d200000 [pid 5152] munmap(0x7f138d200000, 138412032 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5152] <... munmap resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... openat resumed>) = 4 [pid 5152] <... openat resumed>) = 4 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5152] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, [pid 5153] 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"..., 524288 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5153] <... write resumed>) = 524288 [pid 5151] <... write resumed>) = 524288 [pid 5058] close(4) = 0 [pid 5058] rmdir("./13/bus" [pid 5151] munmap(0x7f138d200000, 138412032 [pid 5058] <... rmdir resumed>) = 0 [pid 5058] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5152] <... ioctl resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5152] close(3 [pid 5058] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5152] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5152] close(4 [pid 5151] <... munmap resumed>) = 0 [pid 5058] unlink("./13/binderfs" [pid 5152] <... close resumed>) = 0 [pid 5151] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] <... unlink resumed>) = 0 [pid 5152] mkdir("./bus", 0777 [pid 5058] getdents64(3, [pid 5152] <... mkdir resumed>) = 0 [pid 5151] <... openat resumed>) = 4 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5152] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] rmdir("./13" [pid 5153] munmap(0x7f138d200000, 138412032 [pid 5151] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... rmdir resumed>) = 0 [pid 5153] <... munmap resumed>) = 0 [pid 5058] mkdir("./14", 0777) = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5151] <... ioctl resumed>) = 0 [pid 5153] <... openat resumed>) = 4 [pid 5152] <... mount resumed>) = 0 [pid 5151] close(3 [pid 5061] <... ioctl resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5153] ioctl(4, LOOP_SET_FD, 3 [pid 5152] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5151] <... close resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5151] close(4 [pid 5059] close(3 [pid 5151] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5061] close(3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5151] mkdir("./bus", 0777 [pid 5152] chdir("./bus" [pid 5151] <... mkdir resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5152] <... chdir resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5155 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5154 ./strace-static-x86_64: Process 5154 attached [pid 5152] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5154] set_robust_list(0x555556c07660, 24 [pid 5152] <... symlink resumed>) = 0 [pid 5151] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, ""./strace-static-x86_64: Process 5155 attached [pid 5154] <... set_robust_list resumed>) = 0 [pid 5155] set_robust_list(0x555556c07660, 24 [pid 5154] chdir("./14" [pid 5152] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5155] <... set_robust_list resumed>) = 0 [pid 5154] <... chdir resumed>) = 0 [pid 5155] chdir("./15" [pid 5154] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5155] <... chdir resumed>) = 0 [pid 5154] <... prctl resumed>) = 0 [pid 5153] <... ioctl resumed>) = 0 [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5154] setpgid(0, 0 [pid 5155] <... prctl resumed>) = 0 [pid 5154] <... setpgid resumed>) = 0 [pid 5155] setpgid(0, 0 [pid 5154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5153] close(3 [pid 5155] <... setpgid resumed>) = 0 [pid 5154] <... openat resumed>) = 3 [pid 5153] <... close resumed>) = 0 [pid 5152] <... creat resumed>) = 4 [pid 5153] close(4 [pid 5152] rename("./bus", "./file2" [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5154] write(3, "1000", 4 [pid 5153] <... close resumed>) = 0 [pid 5152] <... rename resumed>) = -1 EEXIST (File exists) [pid 5155] <... openat resumed>) = 3 [pid 5154] <... write resumed>) = 4 [ 63.698647][ T5152] loop0: detected capacity change from 0 to 1024 [ 63.720625][ T5151] loop4: detected capacity change from 0 to 1024 [ 63.740198][ T5153] loop1: detected capacity change from 0 to 1024 [pid 5153] mkdir("./bus", 0777 [pid 5152] memfd_create("syzkaller", 0 [pid 5155] write(3, "1000", 4 [pid 5154] close(3 [pid 5153] <... mkdir resumed>) = 0 [pid 5155] <... write resumed>) = 4 [pid 5154] <... close resumed>) = 0 [pid 5155] close(3 [pid 5154] symlink("/dev/binderfs", "./binderfs" [pid 5152] <... memfd_create resumed>) = 5 [pid 5058] <... ioctl resumed>) = 0 [pid 5155] <... close resumed>) = 0 [pid 5154] <... symlink resumed>) = 0 [pid 5153] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5155] symlink("/dev/binderfs", "./binderfs" [pid 5154] memfd_create("syzkaller", 0 [pid 5152] <... mmap resumed>) = 0x7f138d200000 [pid 5155] <... symlink resumed>) = 0 [pid 5155] memfd_create("syzkaller", 0 [pid 5152] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5151] <... mount resumed>) = 0 [pid 5155] <... memfd_create resumed>) = 3 [pid 5154] <... memfd_create resumed>) = 3 [pid 5155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5155] <... mmap resumed>) = 0x7f138d200000 [pid 5154] <... mmap resumed>) = 0x7f138d200000 [pid 5155] 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"..., 524288 [pid 5153] <... mount resumed>) = 0 [pid 5151] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5058] close(3 [pid 5153] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5151] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5153] chdir("./bus") = 0 [pid 5154] 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"..., 524288 [pid 5153] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5151] chdir("./bus" [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5153] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5152] <... write resumed>) = 524288 [pid 5151] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 5156 attached [pid 5153] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5151] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5156] set_robust_list(0x555556c07660, 24) = 0 [pid 5154] <... write resumed>) = 524288 [pid 5151] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5156 [pid 5156] chdir("./14" [pid 5153] <... symlink resumed>) = 0 [pid 5153] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5156] <... chdir resumed>) = 0 [pid 5151] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5155] <... write resumed>) = 524288 [pid 5153] <... creat resumed>) = 4 [pid 5153] rename("./bus", "./file2" [pid 5156] <... prctl resumed>) = 0 [pid 5153] <... rename resumed>) = -1 EEXIST (File exists) [pid 5153] memfd_create("syzkaller", 0) = 5 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5152] munmap(0x7f138d200000, 138412032 [pid 5156] setpgid(0, 0 [pid 5155] munmap(0x7f138d200000, 138412032 [pid 5154] munmap(0x7f138d200000, 138412032 [pid 5153] <... mmap resumed>) = 0x7f138d200000 [pid 5156] <... setpgid resumed>) = 0 [pid 5152] <... munmap resumed>) = 0 [pid 5155] <... munmap resumed>) = 0 [pid 5151] <... symlink resumed>) = 0 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5154] <... munmap resumed>) = 0 [pid 5155] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5154] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5154] <... openat resumed>) = 4 [pid 5152] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5155] <... openat resumed>) = 4 [pid 5154] ioctl(4, LOOP_SET_FD, 3 [pid 5152] close(5 [pid 5156] <... openat resumed>) = 3 [pid 5155] ioctl(4, LOOP_SET_FD, 3 [pid 5153] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5151] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5156] write(3, "1000", 4) = 4 [pid 5154] <... ioctl resumed>) = 0 [pid 5152] <... close resumed>) = 0 [pid 5156] close(3 [pid 5154] close(3 [pid 5156] <... close resumed>) = 0 [pid 5154] <... close resumed>) = 0 [pid 5151] <... creat resumed>) = 4 [pid 5156] symlink("/dev/binderfs", "./binderfs" [pid 5154] close(4 [pid 5151] rename("./bus", "./file2" [pid 5152] creat("./file1", 000 [pid 5156] <... symlink resumed>) = 0 [pid 5155] <... ioctl resumed>) = 0 [pid 5154] <... close resumed>) = 0 [pid 5153] <... write resumed>) = 524288 [pid 5152] <... creat resumed>) = 5 [pid 5151] <... rename resumed>) = -1 EEXIST (File exists) [pid 5155] close(3 [pid 5154] mkdir("./bus", 0777 [pid 5153] munmap(0x7f138d200000, 138412032 [pid 5152] exit_group(0 [pid 5151] memfd_create("syzkaller", 0 [pid 5155] <... close resumed>) = 0 [pid 5154] <... mkdir resumed>) = 0 [pid 5153] <... munmap resumed>) = 0 [pid 5152] <... exit_group resumed>) = ? [pid 5151] <... memfd_create resumed>) = 5 [pid 5156] memfd_create("syzkaller", 0 [pid 5155] close(4 [pid 5154] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5153] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5152] +++ exited with 0 +++ [pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5153] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5153] close(5 [pid 5156] <... memfd_create resumed>) = 3 [pid 5155] <... close resumed>) = 0 [pid 5151] <... mmap resumed>) = 0x7f138d200000 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5155] mkdir("./bus", 0777 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5155] <... mkdir resumed>) = 0 [pid 5153] <... close resumed>) = 0 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5156] <... mmap resumed>) = 0x7f138d200000 [ 63.840054][ T5154] loop3: detected capacity change from 0 to 1024 [ 63.848183][ T5155] loop5: detected capacity change from 0 to 1024 [pid 5155] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5156] 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"..., 524288 [pid 5154] <... mount resumed>) = 0 [pid 5153] creat("./file1", 000 [pid 5056] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5154] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5154] chdir("./bus" [pid 5151] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5154] <... chdir resumed>) = 0 [pid 5155] <... mount resumed>) = 0 [pid 5154] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5153] <... creat resumed>) = 5 [pid 5056] <... openat resumed>) = 3 [pid 5155] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5153] exit_group(0 [pid 5056] newfstatat(3, "", [pid 5155] <... openat resumed>) = 3 [pid 5154] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5153] <... exit_group resumed>) = ? [pid 5156] <... write resumed>) = 524288 [pid 5155] chdir("./bus" [pid 5154] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5153] +++ exited with 0 +++ [pid 5151] <... write resumed>) = 524288 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] getdents64(3, [pid 5155] <... chdir resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5155] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5155] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5154] <... symlink resumed>) = 0 [pid 5056] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5154] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5155] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5156] munmap(0x7f138d200000, 138412032 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = 0 [pid 5057] newfstatat(3, "", [pid 5156] <... munmap resumed>) = 0 [pid 5155] <... creat resumed>) = 4 [pid 5154] <... creat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5151] munmap(0x7f138d200000, 138412032 [pid 5056] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5155] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5151] <... munmap resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5155] memfd_create("syzkaller", 0) = 5 [pid 5155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5155] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5156] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5154] rename("./bus", "./file2" [pid 5151] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] newfstatat(AT_FDCWD, "./13/bus", [pid 5156] <... openat resumed>) = 4 [pid 5154] <... rename resumed>) = -1 EEXIST (File exists) [pid 5151] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5151] close(5 [pid 5056] <... openat resumed>) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5156] ioctl(4, LOOP_SET_FD, 3 [pid 5155] <... write resumed>) = 524288 [pid 5154] memfd_create("syzkaller", 0 [pid 5151] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5156] <... ioctl resumed>) = 0 [pid 5154] <... memfd_create resumed>) = 5 [pid 5151] creat("./file1", 000 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] close(4 [pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... close resumed>) = 0 [pid 5154] <... mmap resumed>) = 0x7f138d200000 [pid 5056] rmdir("./13/bus" [pid 5057] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./14/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5155] munmap(0x7f138d200000, 138412032 [pid 5057] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5155] <... munmap resumed>) = 0 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5155] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5155] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5154] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5057] rmdir("./14/bus") = 0 [pid 5056] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./14/binderfs") = 0 [pid 5056] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5155] close(5 [pid 5057] getdents64(3, [pid 5156] close(3 [pid 5151] <... creat resumed>) = 5 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5156] <... close resumed>) = 0 [pid 5155] <... close resumed>) = 0 [pid 5151] exit_group(0 [pid 5057] close(3) = 0 [pid 5056] unlink("./13/binderfs" [pid 5156] close(4 [pid 5057] rmdir("./14" [pid 5156] <... close resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5156] mkdir("./bus", 0777 [pid 5057] mkdir("./15", 0777) = 0 [pid 5151] <... exit_group resumed>) = ? [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5155] creat("./file1", 000 [pid 5057] <... openat resumed>) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5155] <... creat resumed>) = 5 [pid 5156] <... mkdir resumed>) = 0 [pid 5155] exit_group(0) = ? [pid 5155] +++ exited with 0 +++ [pid 5056] <... unlink resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5155, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] getdents64(3, [pid 5061] newfstatat(3, "", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, [pid 5151] +++ exited with 0 +++ [pid 5056] close(3 [pid 5156] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5154] <... write resumed>) = 524288 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5056] <... close resumed>) = 0 [pid 5061] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./13") = 0 [ 63.985613][ T5156] loop2: detected capacity change from 0 to 1024 [pid 5154] munmap(0x7f138d200000, 138412032 [pid 5156] <... mount resumed>) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5056] mkdir("./14", 0777 [pid 5154] <... munmap resumed>) = 0 [pid 5154] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5156] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... mkdir resumed>) = 0 [pid 5156] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5156] chdir("./bus" [pid 5061] newfstatat(AT_FDCWD, "./15/bus", [pid 5156] <... chdir resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5156] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5154] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5156] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5156] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5154] close(5 [pid 5061] <... openat resumed>) = 4 [pid 5061] newfstatat(4, "", [pid 5060] newfstatat(3, "", [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5156] <... symlink resumed>) = 0 [pid 5061] getdents64(4, [pid 5060] getdents64(3, [pid 5057] <... ioctl resumed>) = 0 [pid 5156] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] getdents64(4, [pid 5060] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4 [pid 5057] close(3 [pid 5154] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5154] creat("./file1", 000 [pid 5057] <... close resumed>) = 0 [pid 5156] <... creat resumed>) = 4 [pid 5061] rmdir("./15/bus") = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] <... umount2 resumed>) = 0 [pid 5156] rename("./bus", "./file2" [pid 5061] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5157 attached [pid 5154] <... creat resumed>) = 5 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5157 [pid 5061] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5156] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] unlink("./15/binderfs" [pid 5154] exit_group(0 [pid 5157] set_robust_list(0x555556c07660, 24 [pid 5156] memfd_create("syzkaller", 0 [pid 5061] <... unlink resumed>) = 0 [pid 5060] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5157] <... set_robust_list resumed>) = 0 [pid 5156] <... memfd_create resumed>) = 5 [pid 5154] <... exit_group resumed>) = ? [pid 5061] getdents64(3, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] newfstatat(AT_FDCWD, "./13/bus", [pid 5156] <... mmap resumed>) = 0x7f138d200000 [pid 5061] close(3 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5157] chdir("./15" [pid 5061] <... close resumed>) = 0 [pid 5060] umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] rmdir("./15" [pid 5157] <... chdir resumed>) = 0 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5154] +++ exited with 0 +++ [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5157] <... prctl resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5157] setpgid(0, 0 [pid 5060] <... openat resumed>) = 4 [pid 5157] <... setpgid resumed>) = 0 [pid 5060] newfstatat(4, "", [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5154, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5157] <... openat resumed>) = 3 [pid 5061] mkdir("./16", 0777 [pid 5060] getdents64(4, [pid 5157] write(3, "1000", 4 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5157] <... write resumed>) = 4 [pid 5156] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] getdents64(4, [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5157] close(3 [pid 5156] <... write resumed>) = 524288 [pid 5061] <... openat resumed>) = 3 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5060] close(4 [pid 5157] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5157] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... openat resumed>) = 3 [pid 5060] rmdir("./13/bus" [pid 5059] newfstatat(3, "", [pid 5157] <... symlink resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5157] memfd_create("syzkaller", 0 [pid 5060] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./13/binderfs") = 0 [pid 5060] getdents64(3, [pid 5056] close(3 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5157] <... memfd_create resumed>) = 3 [pid 5060] close(3 [pid 5059] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5157] <... mmap resumed>) = 0x7f138d200000 [pid 5060] rmdir("./13") = 0 [pid 5156] munmap(0x7f138d200000, 138412032) = 0 [pid 5060] mkdir("./14", 0777 [pid 5157] 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"..., 524288 [pid 5060] <... mkdir resumed>) = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5156] close(5 [pid 5060] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5158 attached [pid 5156] <... close resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5158 [pid 5158] set_robust_list(0x555556c07660, 24 [pid 5156] creat("./file1", 000 [pid 5158] <... set_robust_list resumed>) = 0 [pid 5158] chdir("./14" [pid 5060] <... ioctl resumed>) = 0 [pid 5158] <... chdir resumed>) = 0 [pid 5061] close(3 [pid 5059] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5158] setpgid(0, 0) = 0 [pid 5156] <... creat resumed>) = 5 [pid 5158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5156] exit_group(0 [pid 5157] <... write resumed>) = 524288 [pid 5156] <... exit_group resumed>) = ? [pid 5156] +++ exited with 0 +++ [pid 5061] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5158] <... openat resumed>) = 3 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] newfstatat(AT_FDCWD, "./14/bus", [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=3 /* 0.03 s */} --- [pid 5058] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5157] munmap(0x7f138d200000, 138412032 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5157] <... munmap resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5159 attached [pid 5157] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] close(3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 3 [pid 5159] set_robust_list(0x555556c07660, 24 [pid 5157] <... openat resumed>) = 4 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5159 [pid 5060] <... close resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(3, "", [pid 5159] <... set_robust_list resumed>) = 0 [pid 5158] write(3, "1000", 4 [pid 5157] ioctl(4, LOOP_SET_FD, 3 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5159] chdir("./16" [pid 5158] <... write resumed>) = 4 [pid 5157] <... ioctl resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5058] getdents64(3, ./strace-static-x86_64: Process 5160 attached [pid 5159] <... chdir resumed>) = 0 [pid 5158] close(3 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5160] set_robust_list(0x555556c07660, 24 [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5158] <... close resumed>) = 0 [pid 5058] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5160] <... set_robust_list resumed>) = 0 [pid 5159] <... prctl resumed>) = 0 [pid 5158] symlink("/dev/binderfs", "./binderfs" [pid 5160] chdir("./14" [pid 5159] setpgid(0, 0 [pid 5158] <... symlink resumed>) = 0 [pid 5059] newfstatat(4, "", [pid 5159] <... setpgid resumed>) = 0 [pid 5158] memfd_create("syzkaller", 0 [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5160] <... chdir resumed>) = 0 [pid 5159] <... openat resumed>) = 3 [pid 5158] <... memfd_create resumed>) = 3 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5160 [pid 5059] getdents64(4, [pid 5158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5158] <... mmap resumed>) = 0x7f138d200000 [pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5059] getdents64(4, [pid 5160] setpgid(0, 0 [pid 5159] write(3, "1000", 4 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5160] <... setpgid resumed>) = 0 [pid 5159] <... write resumed>) = 4 [pid 5059] close(4 [pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5159] close(3 [pid 5160] <... openat resumed>) = 3 [pid 5159] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5160] write(3, "1000", 4 [pid 5159] symlink("/dev/binderfs", "./binderfs" [pid 5059] rmdir("./14/bus" [pid 5160] <... write resumed>) = 4 [pid 5159] <... symlink resumed>) = 0 [pid 5157] close(3 [pid 5160] close(3 [pid 5159] memfd_create("syzkaller", 0 [pid 5158] 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"..., 524288 [pid 5157] <... close resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5160] <... close resumed>) = 0 [pid 5157] close(4 [pid 5160] symlink("/dev/binderfs", "./binderfs" [pid 5157] <... close resumed>) = 0 [pid 5160] <... symlink resumed>) = 0 [pid 5159] <... memfd_create resumed>) = 3 [pid 5160] memfd_create("syzkaller", 0 [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5160] <... memfd_create resumed>) = 3 [pid 5159] 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"..., 524288 [pid 5157] mkdir("./bus", 0777 [pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5158] <... write resumed>) = 524288 [pid 5157] <... mkdir resumed>) = 0 [pid 5059] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5160] <... mmap resumed>) = 0x7f138d200000 [pid 5158] munmap(0x7f138d200000, 138412032 [pid 5157] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5160] 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"..., 524288 [pid 5158] <... munmap resumed>) = 0 [ 64.176246][ T5157] loop1: detected capacity change from 0 to 1024 [pid 5059] newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5158] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] unlink("./14/binderfs" [pid 5158] <... openat resumed>) = 4 [pid 5158] ioctl(4, LOOP_SET_FD, 3 [pid 5159] <... write resumed>) = 524288 [pid 5059] <... unlink resumed>) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3 [pid 5159] munmap(0x7f138d200000, 138412032) = 0 [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./14" [pid 5159] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5159] <... openat resumed>) = 4 [pid 5059] mkdir("./15", 0777 [pid 5159] ioctl(4, LOOP_SET_FD, 3 [pid 5160] <... write resumed>) = 524288 [pid 5159] <... ioctl resumed>) = 0 [pid 5158] <... ioctl resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5157] <... mount resumed>) = 0 [pid 5160] munmap(0x7f138d200000, 138412032 [pid 5159] close(3 [pid 5158] close(3 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5160] <... munmap resumed>) = 0 [pid 5159] <... close resumed>) = 0 [pid 5158] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5159] close(4) = 0 [pid 5158] close(4 [pid 5058] newfstatat(AT_FDCWD, "./14/bus", [pid 5158] <... close resumed>) = 0 [pid 5157] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5160] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5159] mkdir("./bus", 0777 [pid 5157] <... openat resumed>) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5160] <... openat resumed>) = 4 [pid 5159] <... mkdir resumed>) = 0 [pid 5158] mkdir("./bus", 0777 [pid 5157] chdir("./bus" [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5157] <... chdir resumed>) = 0 [pid 5157] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5158] <... mkdir resumed>) = 0 [pid 5157] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5157] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5160] ioctl(4, LOOP_SET_FD, 3 [ 64.236609][ T5158] loop0: detected capacity change from 0 to 1024 [ 64.257342][ T5159] loop5: detected capacity change from 0 to 1024 [pid 5058] newfstatat(4, "", [pid 5159] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5157] <... symlink resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5158] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, [pid 5157] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./14/bus") = 0 [pid 5058] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5159] <... mount resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5159] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5058] newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./14/binderfs" [pid 5159] <... openat resumed>) = 3 [pid 5157] <... creat resumed>) = 4 [pid 5058] <... unlink resumed>) = 0 [pid 5158] <... mount resumed>) = 0 [pid 5158] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5058] getdents64(3, [pid 5160] <... ioctl resumed>) = 0 [pid 5159] chdir("./bus" [pid 5158] <... openat resumed>) = 3 [pid 5157] rename("./bus", "./file2" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5160] close(3 [pid 5159] <... chdir resumed>) = 0 [pid 5158] chdir("./bus" [pid 5058] close(3 [pid 5160] <... close resumed>) = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5158] <... chdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5160] close(4 [pid 5158] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] rmdir("./14" [pid 5160] <... close resumed>) = 0 [pid 5159] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5158] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... rmdir resumed>) = 0 [pid 5160] mkdir("./bus", 0777 [pid 5159] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5158] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5160] <... mkdir resumed>) = 0 [pid 5159] <... symlink resumed>) = 0 [pid 5159] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] mkdir("./15", 0777 [pid 5160] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] <... mkdir resumed>) = 0 [pid 5159] <... creat resumed>) = 4 [pid 5158] <... symlink resumed>) = 0 [pid 5157] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5160] <... mount resumed>) = 0 [pid 5159] rename("./bus", "./file2" [pid 5158] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5157] memfd_create("syzkaller", 0 [pid 5058] <... openat resumed>) = 3 [pid 5160] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5157] <... memfd_create resumed>) = 5 [pid 5160] <... openat resumed>) = 3 [pid 5159] <... rename resumed>) = -1 EEXIST (File exists) [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5160] chdir("./bus" [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5157] <... mmap resumed>) = 0x7f138d200000 [pid 5159] memfd_create("syzkaller", 0 [pid 5160] <... chdir resumed>) = 0 [pid 5158] <... creat resumed>) = 4 [pid 5160] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5159] <... memfd_create resumed>) = 5 [pid 5158] rename("./bus", "./file2" [pid 5160] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5160] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5159] <... mmap resumed>) = 0x7f138d200000 [pid 5158] <... rename resumed>) = -1 EEXIST (File exists) [ 64.283113][ T5160] loop4: detected capacity change from 0 to 1024 [pid 5160] <... symlink resumed>) = 0 [pid 5158] memfd_create("syzkaller", 0 [pid 5160] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5158] <... memfd_create resumed>) = 5 [pid 5059] close(3 [pid 5158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5059] <... close resumed>) = 0 [pid 5158] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5157] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5161 attached [pid 5160] <... creat resumed>) = 4 [pid 5159] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5161] set_robust_list(0x555556c07660, 24 [pid 5160] rename("./bus", "./file2" [pid 5161] <... set_robust_list resumed>) = 0 [pid 5161] chdir("./15") = 0 [pid 5160] <... rename resumed>) = -1 EEXIST (File exists) [pid 5161] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5160] memfd_create("syzkaller", 0 [pid 5161] <... prctl resumed>) = 0 [pid 5160] <... memfd_create resumed>) = 5 [pid 5161] setpgid(0, 0 [pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5161] <... setpgid resumed>) = 0 [pid 5157] <... write resumed>) = 524288 [pid 5161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5160] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5161 [pid 5161] <... openat resumed>) = 3 [pid 5161] write(3, "1000", 4 [pid 5160] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5161] <... write resumed>) = 4 [pid 5161] close(3 [pid 5158] <... write resumed>) = 524288 [pid 5161] <... close resumed>) = 0 [pid 5161] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5159] <... write resumed>) = 524288 [pid 5157] munmap(0x7f138d200000, 138412032 [pid 5159] munmap(0x7f138d200000, 138412032 [pid 5157] <... munmap resumed>) = 0 [pid 5161] memfd_create("syzkaller", 0) = 3 [pid 5158] munmap(0x7f138d200000, 138412032 [pid 5159] <... munmap resumed>) = 0 [pid 5158] <... munmap resumed>) = 0 [pid 5157] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5157] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5161] 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"..., 524288 [pid 5157] close(5 [pid 5058] <... ioctl resumed>) = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5158] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5159] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5158] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5158] close(5 [pid 5058] close(3 [pid 5159] close(5 [pid 5058] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5162 attached [pid 5157] <... close resumed>) = 0 [pid 5162] set_robust_list(0x555556c07660, 24 [pid 5160] <... write resumed>) = 524288 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5162 [pid 5162] <... set_robust_list resumed>) = 0 [pid 5159] <... close resumed>) = 0 [pid 5162] chdir("./15" [pid 5160] munmap(0x7f138d200000, 138412032 [pid 5162] <... chdir resumed>) = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5160] <... munmap resumed>) = 0 [pid 5158] <... close resumed>) = 0 [pid 5162] <... prctl resumed>) = 0 [pid 5162] setpgid(0, 0 [pid 5158] creat("./file1", 000 [pid 5162] <... setpgid resumed>) = 0 [pid 5160] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5161] <... write resumed>) = 524288 [pid 5160] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5162] <... openat resumed>) = 3 [pid 5162] write(3, "1000", 4 [pid 5160] close(5 [pid 5159] creat("./file1", 000 [pid 5158] <... creat resumed>) = 5 [pid 5162] <... write resumed>) = 4 [pid 5160] <... close resumed>) = 0 [pid 5158] exit_group(0 [pid 5162] close(3) = 0 [pid 5162] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5158] <... exit_group resumed>) = ? [pid 5162] memfd_create("syzkaller", 0 [pid 5158] +++ exited with 0 +++ [pid 5157] creat("./file1", 000 [pid 5162] <... memfd_create resumed>) = 3 [pid 5161] munmap(0x7f138d200000, 138412032 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5158, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5161] <... munmap resumed>) = 0 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5162] <... mmap resumed>) = 0x7f138d200000 [pid 5161] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5160] creat("./file1", 000 [pid 5162] 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"..., 524288 [pid 5161] <... openat resumed>) = 4 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5161] ioctl(4, LOOP_SET_FD, 3 [pid 5160] <... creat resumed>) = 5 [pid 5160] exit_group(0 [pid 5056] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5160] <... exit_group resumed>) = ? [pid 5160] +++ exited with 0 +++ [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5162] <... write resumed>) = 524288 [pid 5056] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5157] <... creat resumed>) = 5 [pid 5056] newfstatat(3, "", [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5160, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5157] exit_group(0 [pid 5159] <... creat resumed>) = 5 [pid 5056] getdents64(3, [pid 5157] <... exit_group resumed>) = ? [pid 5159] exit_group(0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5157] +++ exited with 0 +++ [pid 5159] <... exit_group resumed>) = ? [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5060] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5057] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5162] munmap(0x7f138d200000, 138412032 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5162] <... munmap resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5162] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] newfstatat(3, "", [pid 5162] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5162] ioctl(4, LOOP_SET_FD, 3 [pid 5161] <... ioctl resumed>) = 0 [pid 5057] getdents64(3, [pid 5159] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5161] close(3 [pid 5061] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5161] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5161] close(4 [pid 5061] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5161] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5161] mkdir("./bus", 0777 [pid 5061] newfstatat(3, "", [pid 5161] <... mkdir resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5161] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5060] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./14/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5161] <... mount resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 4 [pid 5162] <... ioctl resumed>) = 0 [pid 5161] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] newfstatat(AT_FDCWD, "./16/bus", [pid 5060] newfstatat(4, "", [pid 5162] close(3 [pid 5161] <... openat resumed>) = 3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5162] <... close resumed>) = 0 [pid 5161] chdir("./bus" [pid 5061] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(4, [pid 5162] close(4 [pid 5161] <... chdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5162] <... close resumed>) = 0 [pid 5161] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] getdents64(4, [pid 5162] mkdir("./bus", 0777 [pid 5161] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5162] <... mkdir resumed>) = 0 [pid 5161] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... openat resumed>) = 4 [pid 5060] close(4 [pid 5061] newfstatat(4, "", [pid 5060] <... close resumed>) = 0 [pid 5056] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] rmdir("./14/bus" [pid 5162] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] getdents64(4, [pid 5060] <... rmdir resumed>) = 0 [pid 5161] <... symlink resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] getdents64(4, [pid 5056] newfstatat(AT_FDCWD, "./14/bus", [ 64.414724][ T5161] loop3: detected capacity change from 0 to 1024 [ 64.443162][ T5162] loop2: detected capacity change from 0 to 1024 [pid 5161] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5162] <... mount resumed>) = 0 [pid 5061] close(4 [pid 5060] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5162] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] <... close resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5162] <... openat resumed>) = 3 [pid 5161] <... creat resumed>) = 4 [pid 5061] rmdir("./16/bus" [pid 5060] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5056] umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5162] chdir("./bus" [pid 5161] rename("./bus", "./file2" [pid 5162] <... chdir resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(AT_FDCWD, "./15/bus", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5162] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5162] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5161] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] unlink("./14/binderfs" [pid 5162] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5161] memfd_create("syzkaller", 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... unlink resumed>) = 0 [pid 5057] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 4 [pid 5057] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] newfstatat(4, "", [pid 5161] <... memfd_create resumed>) = 5 [pid 5061] newfstatat(AT_FDCWD, "./16/binderfs", [pid 5060] getdents64(3, [pid 5057] <... openat resumed>) = 4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] newfstatat(4, "", [pid 5161] <... mmap resumed>) = 0x7f138d200000 [pid 5061] unlink("./16/binderfs" [pid 5060] close(3 [pid 5056] getdents64(4, [pid 5060] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5161] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... unlink resumed>) = 0 [pid 5060] rmdir("./14" [pid 5057] getdents64(4, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5162] <... symlink resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] close(4 [pid 5057] getdents64(4, [pid 5162] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] getdents64(3, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5056] rmdir("./14/bus" [pid 5061] close(3 [pid 5060] mkdir("./15", 0777 [pid 5162] <... creat resumed>) = 4 [pid 5061] <... close resumed>) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5162] rename("./bus", "./file2" [pid 5061] rmdir("./16" [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5162] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5056] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5162] memfd_create("syzkaller", 0 [pid 5061] mkdir("./17", 0777 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5162] <... memfd_create resumed>) = 5 [pid 5061] <... mkdir resumed>) = 0 [pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5162] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5057] rmdir("./15/bus" [pid 5056] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5161] <... write resumed>) = 524288 [pid 5061] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5162] <... write resumed>) = 524288 [pid 5161] munmap(0x7f138d200000, 138412032 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] unlink("./14/binderfs" [pid 5161] <... munmap resumed>) = 0 [pid 5161] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] <... unlink resumed>) = 0 [pid 5057] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5161] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] getdents64(3, [pid 5161] close(5 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5056] close(3 [pid 5161] <... close resumed>) = 0 [pid 5162] munmap(0x7f138d200000, 138412032 [pid 5161] creat("./file1", 000 [pid 5162] <... munmap resumed>) = 0 [pid 5162] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5162] close(5) = 0 [pid 5161] <... creat resumed>) = 5 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... close resumed>) = 0 [pid 5161] exit_group(0 [pid 5057] unlink("./15/binderfs" [pid 5056] rmdir("./14" [pid 5161] <... exit_group resumed>) = ? [pid 5161] +++ exited with 0 +++ [pid 5057] <... unlink resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] mkdir("./15", 0777 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5161, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5059] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(3 [pid 5056] <... mkdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5057] rmdir("./15" [pid 5056] <... openat resumed>) = 3 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5162] creat("./file1", 000 [pid 5059] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5057] <... rmdir resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5057] mkdir("./16", 0777 [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5162] <... creat resumed>) = 5 [pid 5057] <... mkdir resumed>) = 0 [pid 5162] exit_group(0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5162] <... exit_group resumed>) = ? [pid 5061] close(3 [pid 5162] +++ exited with 0 +++ [pid 5061] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5059] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] close(3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5060] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./15/bus", [pid 5058] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(3, "", ./strace-static-x86_64: Process 5163 attached [pid 5059] <... openat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5163] set_robust_list(0x555556c07660, 24 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5163 [pid 5059] newfstatat(4, "", [pid 5058] getdents64(3, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] getdents64(4, [pid 5058] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5163] <... set_robust_list resumed>) = 0 [pid 5059] getdents64(4, [pid 5163] chdir("./17" [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5164 [pid 5059] close(4 [pid 5163] <... chdir resumed>) = 0 [pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5056] <... ioctl resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5163] <... prctl resumed>) = 0 [pid 5059] rmdir("./15/bus" [pid 5163] setpgid(0, 0 [pid 5059] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5164 attached [pid 5059] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5164] set_robust_list(0x555556c07660, 24 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(3 [pid 5164] <... set_robust_list resumed>) = 0 [pid 5163] <... setpgid resumed>) = 0 [pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5056] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5163] write(3, "1000", 4 [pid 5059] unlink("./15/binderfs" [pid 5163] <... write resumed>) = 4 [pid 5059] <... unlink resumed>) = 0 [pid 5163] close(3 [pid 5059] getdents64(3, [pid 5163] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5163] symlink("/dev/binderfs", "./binderfs" [pid 5059] close(3 [pid 5164] chdir("./15" [pid 5163] <... symlink resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5163] memfd_create("syzkaller", 0 [pid 5059] rmdir("./15" [pid 5164] <... chdir resumed>) = 0 [pid 5163] <... memfd_create resumed>) = 3 [pid 5059] <... rmdir resumed>) = 0 [pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5059] mkdir("./16", 0777 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5165 [pid 5164] setpgid(0, 0) = 0 [pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5165 attached [pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5163] <... mmap resumed>) = 0x7f138d200000 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD) = 0 [pid 5059] close(3) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5163] 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"..., 524288./strace-static-x86_64: Process 5166 attached [pid 5165] set_robust_list(0x555556c07660, 24 [pid 5164] <... openat resumed>) = 3 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5166 [pid 5058] <... umount2 resumed>) = 0 [pid 5166] set_robust_list(0x555556c07660, 24) = 0 [pid 5166] chdir("./16" [pid 5165] <... set_robust_list resumed>) = 0 [pid 5164] write(3, "1000", 4 [pid 5166] <... chdir resumed>) = 0 [pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5166] setpgid(0, 0 [pid 5165] chdir("./15" [pid 5164] <... write resumed>) = 4 [pid 5163] <... write resumed>) = 524288 [pid 5058] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5166] <... setpgid resumed>) = 0 [pid 5165] <... chdir resumed>) = 0 [pid 5164] close(3 [pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5164] <... close resumed>) = 0 [pid 5166] <... openat resumed>) = 3 [pid 5165] <... prctl resumed>) = 0 [pid 5164] symlink("/dev/binderfs", "./binderfs" [pid 5166] write(3, "1000", 4 [pid 5165] setpgid(0, 0 [pid 5166] <... write resumed>) = 4 [pid 5164] <... symlink resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5166] close(3 [pid 5165] <... setpgid resumed>) = 0 [pid 5166] <... close resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./15/bus", [pid 5166] symlink("/dev/binderfs", "./binderfs" [pid 5164] memfd_create("syzkaller", 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5166] <... symlink resumed>) = 0 [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5166] memfd_create("syzkaller", 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5166] <... memfd_create resumed>) = 3 [pid 5165] <... openat resumed>) = 3 [pid 5164] <... memfd_create resumed>) = 3 [pid 5058] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... ioctl resumed>) = 0 [pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5165] write(3, "1000", 4 [pid 5058] <... openat resumed>) = 4 [pid 5166] <... mmap resumed>) = 0x7f138d200000 [pid 5165] <... write resumed>) = 4 [pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] newfstatat(4, "", [pid 5057] close(3 [pid 5166] 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"..., 524288 [pid 5165] close(3 [pid 5164] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5165] <... close resumed>) = 0 [pid 5163] munmap(0x7f138d200000, 138412032 [pid 5058] getdents64(4, [pid 5163] <... munmap resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5163] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... close resumed>) = 0 [pid 5165] symlink("/dev/binderfs", "./binderfs" [pid 5164] 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"..., 524288 [pid 5058] rmdir("./15/bus" [pid 5165] <... symlink resumed>) = 0 [pid 5163] <... openat resumed>) = 4 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5058] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5165] memfd_create("syzkaller", 0 [pid 5163] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5165] <... memfd_create resumed>) = 3 [pid 5163] <... ioctl resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5166] <... write resumed>) = 524288 [pid 5165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./15/binderfs" [pid 5165] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... unlink resumed>) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5058] rmdir("./15") = 0 [pid 5058] mkdir("./16", 0777) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5166] munmap(0x7f138d200000, 138412032 [pid 5058] <... openat resumed>) = 3 [pid 5166] <... munmap resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5167 [pid 5166] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 ./strace-static-x86_64: Process 5167 attached [pid 5166] ioctl(4, LOOP_SET_FD, 3 [pid 5165] 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"..., 524288 [pid 5167] set_robust_list(0x555556c07660, 24) = 0 [pid 5167] chdir("./16") = 0 [pid 5163] close(3 [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5163] <... close resumed>) = 0 [pid 5167] <... prctl resumed>) = 0 [pid 5163] close(4 [pid 5167] setpgid(0, 0 [pid 5163] <... close resumed>) = 0 [pid 5167] <... setpgid resumed>) = 0 [pid 5167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5163] mkdir("./bus", 0777) = 0 [pid 5163] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5165] <... write resumed>) = 524288 [pid 5164] <... write resumed>) = 524288 [pid 5167] <... openat resumed>) = 3 [pid 5164] munmap(0x7f138d200000, 138412032 [pid 5163] <... mount resumed>) = 0 [pid 5167] write(3, "1000", 4 [pid 5165] munmap(0x7f138d200000, 138412032 [pid 5164] <... munmap resumed>) = 0 [pid 5163] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5163] chdir("./bus") = 0 [pid 5167] <... write resumed>) = 4 [pid 5166] <... ioctl resumed>) = 0 [pid 5163] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5165] <... munmap resumed>) = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5163] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 64.707778][ T5163] loop5: detected capacity change from 0 to 1024 [ 64.729248][ T5166] loop3: detected capacity change from 0 to 1024 [pid 5163] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5167] close(3 [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5164] <... openat resumed>) = 4 [pid 5167] <... close resumed>) = 0 [pid 5165] <... openat resumed>) = 4 [pid 5164] ioctl(4, LOOP_SET_FD, 3 [pid 5167] symlink("/dev/binderfs", "./binderfs" [pid 5166] close(3 [pid 5165] ioctl(4, LOOP_SET_FD, 3 [pid 5167] <... symlink resumed>) = 0 [pid 5166] <... close resumed>) = 0 [pid 5167] memfd_create("syzkaller", 0 [pid 5166] close(4 [pid 5167] <... memfd_create resumed>) = 3 [pid 5166] <... close resumed>) = 0 [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5166] mkdir("./bus", 0777 [pid 5167] <... mmap resumed>) = 0x7f138d200000 [pid 5166] <... mkdir resumed>) = 0 [pid 5163] <... symlink resumed>) = 0 [pid 5166] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5167] 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"..., 524288 [pid 5163] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5165] <... ioctl resumed>) = 0 [pid 5163] <... creat resumed>) = 4 [pid 5163] rename("./bus", "./file2" [pid 5058] <... ioctl resumed>) = 0 [pid 5163] <... rename resumed>) = -1 EEXIST (File exists) [pid 5163] memfd_create("syzkaller", 0) = 5 [pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5164] <... ioctl resumed>) = 0 [pid 5163] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5166] <... mount resumed>) = 0 [pid 5164] close(3 [pid 5166] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5164] <... close resumed>) = 0 [pid 5166] <... openat resumed>) = 3 [ 64.764267][ T5164] loop4: detected capacity change from 0 to 1024 [ 64.777895][ T5165] loop0: detected capacity change from 0 to 1024 [pid 5164] close(4 [pid 5167] <... write resumed>) = 524288 [pid 5166] chdir("./bus" [pid 5165] close(3 [pid 5164] <... close resumed>) = 0 [pid 5165] <... close resumed>) = 0 [pid 5164] mkdir("./bus", 0777 [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5165] close(4 [pid 5164] <... mkdir resumed>) = 0 [pid 5165] <... close resumed>) = 0 [pid 5164] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5166] <... chdir resumed>) = 0 [pid 5166] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 5168 attached ) = -1 EBUSY (Device or resource busy) [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5168 [pid 5165] mkdir("./bus", 0777 [pid 5168] set_robust_list(0x555556c07660, 24 [pid 5166] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5165] <... mkdir resumed>) = 0 [pid 5164] <... mount resumed>) = 0 [pid 5163] <... write resumed>) = 524288 [pid 5165] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5164] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5168] <... set_robust_list resumed>) = 0 [pid 5167] munmap(0x7f138d200000, 138412032 [pid 5168] chdir("./16" [pid 5167] <... munmap resumed>) = 0 [pid 5168] <... chdir resumed>) = 0 [pid 5168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5168] setpgid(0, 0) = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5167] <... openat resumed>) = 4 [pid 5168] <... openat resumed>) = 3 [pid 5167] ioctl(4, LOOP_SET_FD, 3 [pid 5168] write(3, "1000", 4 [pid 5163] munmap(0x7f138d200000, 138412032 [pid 5166] <... symlink resumed>) = 0 [pid 5164] <... openat resumed>) = 3 [pid 5163] <... munmap resumed>) = 0 [pid 5166] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5164] chdir("./bus" [pid 5163] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5166] <... creat resumed>) = 4 [pid 5164] <... chdir resumed>) = 0 [pid 5163] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5166] rename("./bus", "./file2" [pid 5164] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5163] close(5 [pid 5168] <... write resumed>) = 4 [pid 5166] <... rename resumed>) = -1 EEXIST (File exists) [pid 5164] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5163] <... close resumed>) = 0 [pid 5168] close(3 [pid 5166] memfd_create("syzkaller", 0 [pid 5164] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5166] <... memfd_create resumed>) = 5 [pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5168] <... close resumed>) = 0 [pid 5166] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5164] <... symlink resumed>) = 0 [pid 5168] symlink("/dev/binderfs", "./binderfs" [pid 5164] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5168] <... symlink resumed>) = 0 [pid 5168] memfd_create("syzkaller", 0) = 3 [pid 5168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5163] creat("./file1", 000 [pid 5168] <... mmap resumed>) = 0x7f138d200000 [pid 5165] <... mount resumed>) = 0 [pid 5164] <... creat resumed>) = 4 [pid 5168] 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"..., 524288 [pid 5164] rename("./bus", "./file2" [pid 5167] <... ioctl resumed>) = 0 [pid 5165] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5164] <... rename resumed>) = -1 EEXIST (File exists) [pid 5163] <... creat resumed>) = 5 [pid 5167] close(3 [pid 5163] exit_group(0 [pid 5167] <... close resumed>) = 0 [pid 5163] <... exit_group resumed>) = ? [pid 5167] close(4 [pid 5165] <... openat resumed>) = 3 [pid 5164] memfd_create("syzkaller", 0 [pid 5163] +++ exited with 0 +++ [pid 5167] <... close resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5163, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5167] mkdir("./bus", 0777 [pid 5166] <... write resumed>) = 524288 [pid 5165] chdir("./bus" [pid 5164] <... memfd_create resumed>) = 5 [pid 5167] <... mkdir resumed>) = 0 [pid 5167] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5165] <... chdir resumed>) = 0 [pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5168] <... write resumed>) = 524288 [pid 5166] munmap(0x7f138d200000, 138412032 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 64.851445][ T5167] loop1: detected capacity change from 0 to 1024 [pid 5061] newfstatat(3, "", [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5164] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5165] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5165] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5164] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5167] <... mount resumed>) = 0 [pid 5167] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5165] <... symlink resumed>) = 0 [pid 5167] chdir("./bus") = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5167] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5166] <... munmap resumed>) = 0 [pid 5165] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... umount2 resumed>) = 0 [pid 5164] <... write resumed>) = 524288 [pid 5167] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5166] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5165] <... creat resumed>) = 4 [pid 5167] <... creat resumed>) = 4 [pid 5166] close(5 [pid 5165] rename("./bus", "./file2" [pid 5061] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5167] rename("./bus", "./file2" [pid 5168] munmap(0x7f138d200000, 138412032) = 0 [pid 5168] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5166] <... close resumed>) = 0 [pid 5168] <... openat resumed>) = 4 [pid 5164] munmap(0x7f138d200000, 138412032 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./17/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5164] <... munmap resumed>) = 0 [pid 5168] ioctl(4, LOOP_SET_FD, 3 [pid 5164] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5164] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5164] close(5 [pid 5061] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5061] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5167] <... rename resumed>) = -1 EEXIST (File exists) [pid 5166] creat("./file1", 000 [pid 5061] getdents64(4, [pid 5167] memfd_create("syzkaller", 0) = 5 [pid 5165] <... rename resumed>) = -1 EEXIST (File exists) [pid 5164] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5166] <... creat resumed>) = 5 [pid 5165] memfd_create("syzkaller", 0 [pid 5164] creat("./file1", 000 [pid 5061] getdents64(4, [pid 5167] <... mmap resumed>) = 0x7f138d200000 [pid 5165] <... memfd_create resumed>) = 5 [pid 5165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./17/bus") = 0 [pid 5165] <... mmap resumed>) = 0x7f138d200000 [pid 5166] exit_group(0 [pid 5061] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5167] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5164] <... creat resumed>) = 5 [pid 5061] newfstatat(AT_FDCWD, "./17/binderfs", [pid 5168] <... ioctl resumed>) = 0 [pid 5167] <... write resumed>) = 524288 [pid 5166] <... exit_group resumed>) = ? [pid 5165] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5164] exit_group(0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./17/binderfs" [pid 5166] +++ exited with 0 +++ [pid 5061] <... unlink resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5059] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5059] newfstatat(3, "", [pid 5164] <... exit_group resumed>) = ? [pid 5168] close(3) = 0 [pid 5061] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] rmdir("./17" [pid 5059] getdents64(3, [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5164] +++ exited with 0 +++ [pid 5168] close(4 [pid 5061] mkdir("./18", 0777) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5164, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5168] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5060] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5165] <... write resumed>) = 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5167] munmap(0x7f138d200000, 138412032 [pid 5060] <... openat resumed>) = 3 [ 64.966417][ T5168] loop2: detected capacity change from 0 to 1024 [pid 5168] mkdir("./bus", 0777 [pid 5167] <... munmap resumed>) = 0 [pid 5165] munmap(0x7f138d200000, 138412032 [pid 5060] newfstatat(3, "", [pid 5059] <... umount2 resumed>) = 0 [pid 5168] <... mkdir resumed>) = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5168] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5165] <... munmap resumed>) = 0 [pid 5060] getdents64(3, [pid 5167] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5167] close(5 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5168] <... mount resumed>) = 0 [pid 5167] <... close resumed>) = 0 [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5168] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5168] <... openat resumed>) = 3 [pid 5165] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5165] close(5 [pid 5059] newfstatat(AT_FDCWD, "./16/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5168] chdir("./bus" [pid 5165] <... close resumed>) = 0 [pid 5059] newfstatat(4, "", [pid 5168] <... chdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5168] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5167] creat("./file1", 000 [pid 5165] creat("./file1", 000 [pid 5060] <... umount2 resumed>) = 0 [pid 5059] getdents64(4, [pid 5168] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5168] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5165] <... creat resumed>) = 5 [pid 5060] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(4, [pid 5061] <... ioctl resumed>) = 0 [pid 5165] exit_group(0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5165] <... exit_group resumed>) = ? [pid 5167] <... creat resumed>) = 5 [pid 5059] close(4 [pid 5167] exit_group(0 [pid 5059] <... close resumed>) = 0 [pid 5167] <... exit_group resumed>) = ? [pid 5059] rmdir("./16/bus" [pid 5168] <... symlink resumed>) = 0 [pid 5167] +++ exited with 0 +++ [pid 5165] +++ exited with 0 +++ [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... rmdir resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5167, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5165, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5168] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] newfstatat(AT_FDCWD, "./15/bus", [pid 5057] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5168] <... creat resumed>) = 4 [pid 5060] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5168] rename("./bus", "./file2" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] close(3 [pid 5060] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(3, "", [pid 5056] newfstatat(3, "", [pid 5168] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... openat resumed>) = 4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] newfstatat(4, "", [pid 5057] getdents64(3, [pid 5056] getdents64(3, [pid 5168] memfd_create("syzkaller", 0 [pid 5061] <... close resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(AT_FDCWD, "./16/binderfs", [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5168] <... memfd_create resumed>) = 5 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] unlink("./16/binderfs" [pid 5168] <... mmap resumed>) = 0x7f138d200000 [pid 5060] getdents64(4, [pid 5059] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 5169 attached [pid 5168] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] getdents64(3, [pid 5169] set_robust_list(0x555556c07660, 24 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5169 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5169] <... set_robust_list resumed>) = 0 [pid 5059] close(3 [pid 5169] chdir("./18" [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./16" [pid 5169] <... chdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5169] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] mkdir("./17", 0777 [pid 5169] <... prctl resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5169] setpgid(0, 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5169] <... setpgid resumed>) = 0 [pid 5060] close(4 [pid 5059] <... openat resumed>) = 3 [pid 5060] <... close resumed>) = 0 [pid 5169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5169] <... openat resumed>) = 3 [pid 5169] write(3, "1000", 4) = 4 [pid 5169] close(3) = 0 [pid 5169] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5060] rmdir("./15/bus" [pid 5169] memfd_create("syzkaller", 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5169] <... memfd_create resumed>) = 3 [pid 5169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5060] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./15/binderfs" [pid 5169] 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"..., 524288 [pid 5060] <... unlink resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5168] <... write resumed>) = 524288 [pid 5060] getdents64(3, [pid 5057] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] close(3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... close resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./16/bus", [pid 5056] newfstatat(AT_FDCWD, "./15/bus", [pid 5060] rmdir("./15" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] mkdir("./16", 0777 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... openat resumed>) = 4 [pid 5056] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... openat resumed>) = 3 [pid 5057] newfstatat(4, "", [pid 5056] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5057] getdents64(4, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5056] getdents64(4, [pid 5057] <... close resumed>) = 0 [pid 5168] munmap(0x7f138d200000, 138412032 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] rmdir("./16/bus" [pid 5056] close(4 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5057] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./15/bus" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./16/binderfs", [pid 5056] <... rmdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5168] <... munmap resumed>) = 0 [pid 5057] unlink("./16/binderfs") = 0 [pid 5056] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5168] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] getdents64(3, [pid 5168] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5168] close(5 [pid 5169] <... write resumed>) = 524288 [pid 5168] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] rmdir("./16" [pid 5056] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5057] <... rmdir resumed>) = 0 [pid 5169] munmap(0x7f138d200000, 138412032 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] mkdir("./17", 0777) = 0 [pid 5056] unlink("./15/binderfs") = 0 [pid 5169] <... munmap resumed>) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5169] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5056] close(3 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] <... close resumed>) = 0 [pid 5169] <... openat resumed>) = 4 [pid 5057] <... openat resumed>) = 3 [pid 5056] rmdir("./15" [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5168] creat("./file1", 000 [pid 5056] <... rmdir resumed>) = 0 [pid 5056] mkdir("./16", 0777 [pid 5169] ioctl(4, LOOP_SET_FD, 3 [pid 5059] <... ioctl resumed>) = 0 [pid 5169] <... ioctl resumed>) = 0 [pid 5168] <... creat resumed>) = 5 [pid 5060] <... ioctl resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5169] close(3 [pid 5059] close(3 [pid 5169] <... close resumed>) = 0 [pid 5169] close(4 [pid 5059] <... close resumed>) = 0 [pid 5169] <... close resumed>) = 0 [pid 5169] mkdir("./bus", 0777 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5169] <... mkdir resumed>) = 0 [pid 5169] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5168] exit_group(0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 5170 attached [pid 5169] <... mount resumed>) = 0 [pid 5168] <... exit_group resumed>) = ? [pid 5060] close(3 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5170 [pid 5056] <... openat resumed>) = 3 [pid 5170] set_robust_list(0x555556c07660, 24 [pid 5169] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5168] +++ exited with 0 +++ [pid 5060] <... close resumed>) = 0 [pid 5170] <... set_robust_list resumed>) = 0 [pid 5169] <... openat resumed>) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5170] chdir("./17" [pid 5169] chdir("./bus" [pid 5170] <... chdir resumed>) = 0 [pid 5169] <... chdir resumed>) = 0 [pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5169] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5170] <... prctl resumed>) = 0 [pid 5169] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5170] setpgid(0, 0 [pid 5169] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5170] <... setpgid resumed>) = 0 [ 65.163367][ T5169] loop5: detected capacity change from 0 to 1024 [pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5169] <... symlink resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5168, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5057] <... ioctl resumed>) = 0 [pid 5169] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5170] write(3, "1000", 4) = 4 [pid 5170] close(3) = 0 [pid 5170] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5058] <... restart_syscall resumed>) = 0 [pid 5170] memfd_create("syzkaller", 0 [pid 5057] close(3 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5171 [pid 5170] <... memfd_create resumed>) = 3 [pid 5057] <... close resumed>) = 0 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5170] <... mmap resumed>) = 0x7f138d200000 ./strace-static-x86_64: Process 5172 attached [pid 5170] 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"..., 524288 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5172] set_robust_list(0x555556c07660, 24 [pid 5058] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5172 [pid 5058] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5171 attached [pid 5058] newfstatat(3, "", [pid 5171] set_robust_list(0x555556c07660, 24 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5171] <... set_robust_list resumed>) = 0 [pid 5169] <... creat resumed>) = 4 [pid 5058] getdents64(3, [pid 5172] <... set_robust_list resumed>) = 0 [pid 5171] chdir("./16" [pid 5170] <... write resumed>) = 524288 [pid 5169] rename("./bus", "./file2" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... ioctl resumed>) = 0 [pid 5171] <... chdir resumed>) = 0 [pid 5058] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5172] chdir("./17" [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5171] setpgid(0, 0 [pid 5172] <... chdir resumed>) = 0 [pid 5171] <... setpgid resumed>) = 0 [pid 5169] <... rename resumed>) = -1 EEXIST (File exists) [pid 5172] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5169] memfd_create("syzkaller", 0 [pid 5172] <... prctl resumed>) = 0 [pid 5171] <... openat resumed>) = 3 [pid 5169] <... memfd_create resumed>) = 5 [pid 5172] setpgid(0, 0 [pid 5171] write(3, "1000", 4 [pid 5170] munmap(0x7f138d200000, 138412032 [pid 5169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] close(3 [pid 5171] <... write resumed>) = 4 [pid 5169] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... close resumed>) = 0 [pid 5172] <... setpgid resumed>) = 0 [pid 5172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5171] close(3 [pid 5170] <... munmap resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5171] <... close resumed>) = 0 [pid 5171] symlink("/dev/binderfs", "./binderfs" [pid 5170] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5171] <... symlink resumed>) = 0 [pid 5170] <... openat resumed>) = 4 [pid 5169] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5170] ioctl(4, LOOP_SET_FD, 3 [pid 5172] <... openat resumed>) = 3 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5173 [pid 5171] memfd_create("syzkaller", 0) = 3 [pid 5169] <... write resumed>) = 524288 ./strace-static-x86_64: Process 5173 attached [pid 5171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5173] set_robust_list(0x555556c07660, 24 [pid 5172] write(3, "1000", 4 [pid 5171] 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"..., 524288 [pid 5173] <... set_robust_list resumed>) = 0 [pid 5172] <... write resumed>) = 4 [pid 5172] close(3 [pid 5173] chdir("./16" [pid 5172] <... close resumed>) = 0 [pid 5172] symlink("/dev/binderfs", "./binderfs" [pid 5173] <... chdir resumed>) = 0 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5172] <... symlink resumed>) = 0 [pid 5169] munmap(0x7f138d200000, 138412032 [pid 5173] <... prctl resumed>) = 0 [pid 5172] memfd_create("syzkaller", 0 [pid 5169] <... munmap resumed>) = 0 [pid 5173] setpgid(0, 0) = 0 [pid 5172] <... memfd_create resumed>) = 3 [pid 5169] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5169] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5169] close(5 [pid 5173] <... openat resumed>) = 3 [pid 5172] <... mmap resumed>) = 0x7f138d200000 [pid 5170] <... ioctl resumed>) = 0 [pid 5169] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5173] write(3, "1000", 4 [pid 5172] 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"..., 524288 [pid 5171] <... write resumed>) = 524288 [pid 5170] close(3 [pid 5173] <... write resumed>) = 4 [pid 5170] <... close resumed>) = 0 [pid 5058] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5173] close(3 [pid 5170] close(4 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5173] <... close resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./16/bus", [pid 5173] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5171] munmap(0x7f138d200000, 138412032 [pid 5170] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5170] mkdir("./bus", 0777) = 0 [pid 5058] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5170] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5173] memfd_create("syzkaller", 0 [pid 5171] <... munmap resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5173] <... memfd_create resumed>) = 3 [pid 5172] <... write resumed>) = 524288 [pid 5171] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5169] creat("./file1", 000 [pid 5058] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5172] munmap(0x7f138d200000, 138412032 [pid 5170] <... mount resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5170] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5170] chdir("./bus") = 0 [ 65.279114][ T5170] loop3: detected capacity change from 0 to 1024 [pid 5171] <... openat resumed>) = 4 [pid 5170] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] newfstatat(4, "", [pid 5170] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5170] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5170] <... symlink resumed>) = 0 [pid 5170] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5172] <... munmap resumed>) = 0 [pid 5171] ioctl(4, LOOP_SET_FD, 3 [pid 5058] getdents64(4, [pid 5173] 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"..., 524288 [pid 5172] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5170] <... creat resumed>) = 4 [pid 5169] <... creat resumed>) = 5 [pid 5170] rename("./bus", "./file2" [pid 5172] <... openat resumed>) = 4 [pid 5170] <... rename resumed>) = -1 EEXIST (File exists) [pid 5169] exit_group(0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5172] ioctl(4, LOOP_SET_FD, 3 [pid 5170] memfd_create("syzkaller", 0 [pid 5169] <... exit_group resumed>) = ? [pid 5170] <... memfd_create resumed>) = 5 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5170] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5171] <... ioctl resumed>) = 0 [pid 5171] close(3 [pid 5170] <... write resumed>) = 524288 [pid 5171] <... close resumed>) = 0 [pid 5171] close(4) = 0 [pid 5172] <... ioctl resumed>) = 0 [pid 5170] munmap(0x7f138d200000, 138412032 [pid 5169] +++ exited with 0 +++ [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5171] mkdir("./bus", 0777 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5169, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5058] <... close resumed>) = 0 [pid 5172] close(3 [pid 5171] <... mkdir resumed>) = 0 [pid 5170] <... munmap resumed>) = 0 [pid 5061] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] rmdir("./16/bus" [pid 5173] <... write resumed>) = 524288 [pid 5172] <... close resumed>) = 0 [pid 5171] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5170] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... rmdir resumed>) = 0 [pid 5058] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./16/binderfs", [pid 5172] close(4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5172] <... close resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] unlink("./16/binderfs" [pid 5172] mkdir("./bus", 0777 [pid 5170] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... openat resumed>) = 3 [pid 5058] <... unlink resumed>) = 0 [pid 5173] munmap(0x7f138d200000, 138412032 [pid 5172] <... mkdir resumed>) = 0 [pid 5170] close(5 [pid 5061] newfstatat(3, "", [pid 5058] getdents64(3, [pid 5173] <... munmap resumed>) = 0 [pid 5172] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5170] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] getdents64(3, [pid 5058] close(3 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... close resumed>) = 0 [pid 5173] <... openat resumed>) = 4 [ 65.343459][ T5171] loop4: detected capacity change from 0 to 1024 [ 65.353372][ T5172] loop1: detected capacity change from 0 to 1024 [pid 5058] rmdir("./16") = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] mkdir("./17", 0777) = 0 [pid 5173] ioctl(4, LOOP_SET_FD, 3 [pid 5061] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5173] <... ioctl resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5170] creat("./file1", 000 [pid 5173] close(3 [pid 5171] <... mount resumed>) = 0 [pid 5170] <... creat resumed>) = 5 [pid 5170] exit_group(0) = ? [pid 5170] +++ exited with 0 +++ [pid 5171] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5171] <... openat resumed>) = 3 [pid 5173] <... close resumed>) = 0 [pid 5173] close(4) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5173] mkdir("./bus", 0777 [pid 5171] chdir("./bus" [pid 5061] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5173] <... mkdir resumed>) = 0 [pid 5171] <... chdir resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./18/bus", [pid 5059] <... openat resumed>) = 3 [pid 5171] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5173] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5172] <... mount resumed>) = 0 [pid 5171] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] newfstatat(3, "", [pid 5061] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5172] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5171] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5172] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5172] chdir("./bus") = 0 [pid 5172] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5171] <... symlink resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5172] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5171] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... openat resumed>) = 4 [pid 5059] getdents64(3, [pid 5061] newfstatat(4, "", [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5172] <... symlink resumed>) = 0 [pid 5172] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5173] <... mount resumed>) = 0 [pid 5172] <... creat resumed>) = 4 [pid 5171] <... creat resumed>) = 4 [pid 5059] <... umount2 resumed>) = 0 [pid 5173] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5172] rename("./bus", "./file2" [pid 5171] rename("./bus", "./file2" [pid 5061] getdents64(4, [pid 5173] <... openat resumed>) = 3 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5173] chdir("./bus" [pid 5172] <... rename resumed>) = -1 EEXIST (File exists) [pid 5171] <... rename resumed>) = -1 EEXIST (File exists) [ 65.396659][ T5173] loop0: detected capacity change from 0 to 1024 [pid 5061] close(4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./17/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] rmdir("./18/bus" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... ioctl resumed>) = 0 [pid 5173] <... chdir resumed>) = 0 [pid 5172] memfd_create("syzkaller", 0 [pid 5171] memfd_create("syzkaller", 0 [pid 5059] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5172] <... memfd_create resumed>) = 5 [pid 5171] <... memfd_create resumed>) = 5 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] newfstatat(4, "", [pid 5173] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5172] <... mmap resumed>) = 0x7f138d200000 [pid 5171] <... mmap resumed>) = 0x7f138d200000 [pid 5061] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5173] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5172] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] unlink("./18/binderfs" [pid 5059] getdents64(4, [pid 5058] <... close resumed>) = 0 [pid 5171] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... unlink resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] getdents64(3, [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5059] close(4 [pid 5061] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5061] rmdir("./18" [pid 5059] rmdir("./17/bus" [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5059] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] mkdir("./19", 0777) = 0 ./strace-static-x86_64: Process 5174 attached [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... openat resumed>) = 3 [pid 5059] newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] unlink("./17/binderfs" [pid 5174] set_robust_list(0x555556c07660, 24 [pid 5059] <... unlink resumed>) = 0 [pid 5174] <... set_robust_list resumed>) = 0 [pid 5059] getdents64(3, [pid 5174] chdir("./17" [pid 5173] <... symlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5174 [pid 5174] <... chdir resumed>) = 0 [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5174] setpgid(0, 0) = 0 [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5059] close(3 [pid 5174] write(3, "1000", 4 [pid 5059] <... close resumed>) = 0 [pid 5174] <... write resumed>) = 4 [pid 5173] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5171] <... write resumed>) = 524288 [pid 5059] rmdir("./17" [pid 5174] close(3 [pid 5059] <... rmdir resumed>) = 0 [pid 5174] <... close resumed>) = 0 [pid 5174] symlink("/dev/binderfs", "./binderfs" [pid 5172] <... write resumed>) = 524288 [pid 5059] mkdir("./18", 0777 [pid 5174] <... symlink resumed>) = 0 [pid 5174] memfd_create("syzkaller", 0 [pid 5173] <... creat resumed>) = 4 [pid 5171] munmap(0x7f138d200000, 138412032 [pid 5173] rename("./bus", "./file2" [pid 5059] <... mkdir resumed>) = 0 [pid 5174] <... memfd_create resumed>) = 3 [pid 5172] munmap(0x7f138d200000, 138412032 [pid 5173] <... rename resumed>) = -1 EEXIST (File exists) [pid 5172] <... munmap resumed>) = 0 [pid 5171] <... munmap resumed>) = 0 [pid 5174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5173] memfd_create("syzkaller", 0 [pid 5172] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5173] <... memfd_create resumed>) = 5 [pid 5171] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5172] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5171] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... openat resumed>) = 3 [pid 5174] <... mmap resumed>) = 0x7f138d200000 [pid 5173] <... mmap resumed>) = 0x7f138d200000 [pid 5172] close(5 [pid 5171] close(5 [pid 5174] 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"..., 524288 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5173] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5172] <... close resumed>) = 0 [pid 5171] <... close resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5172] creat("./file1", 000 [pid 5171] creat("./file1", 000) = 5 [pid 5173] <... write resumed>) = 524288 [pid 5171] exit_group(0 [pid 5172] <... creat resumed>) = 5 [pid 5171] <... exit_group resumed>) = ? [pid 5172] exit_group(0 [pid 5061] close(3 [pid 5172] <... exit_group resumed>) = ? [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5172] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5172, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- ./strace-static-x86_64: Process 5175 attached [pid 5057] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5175] set_robust_list(0x555556c07660, 24 [pid 5174] <... write resumed>) = 524288 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5175 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5175] <... set_robust_list resumed>) = 0 [pid 5174] munmap(0x7f138d200000, 138412032 [pid 5057] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5175] chdir("./19" [pid 5174] <... munmap resumed>) = 0 [pid 5173] munmap(0x7f138d200000, 138412032 [pid 5171] +++ exited with 0 +++ [pid 5057] <... openat resumed>) = 3 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5171, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5057] newfstatat(3, "", [pid 5175] <... chdir resumed>) = 0 [pid 5173] <... munmap resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5174] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] getdents64(3, [pid 5175] <... prctl resumed>) = 0 [pid 5174] <... openat resumed>) = 4 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5175] setpgid(0, 0 [pid 5174] ioctl(4, LOOP_SET_FD, 3 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5175] <... setpgid resumed>) = 0 [pid 5173] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5173] close(5 [pid 5060] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... ioctl resumed>) = 0 [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5174] <... ioctl resumed>) = 0 [pid 5173] <... close resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(3 [pid 5057] <... umount2 resumed>) = 0 [pid 5175] <... openat resumed>) = 3 [pid 5174] close(3 [pid 5173] creat("./file1", 000 [pid 5060] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... close resumed>) = 0 [pid 5175] write(3, "1000", 4 [pid 5174] <... close resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5175] <... write resumed>) = 4 [pid 5174] close(4 [pid 5173] <... creat resumed>) = 5 [pid 5060] newfstatat(3, "", [pid 5175] close(3 [pid 5174] <... close resumed>) = 0 [pid 5173] exit_group(0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5176 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5175] <... close resumed>) = 0 [pid 5174] mkdir("./bus", 0777 [pid 5173] <... exit_group resumed>) = ? [pid 5060] getdents64(3, [pid 5175] symlink("/dev/binderfs", "./binderfs" [pid 5174] <... mkdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] newfstatat(AT_FDCWD, "./17/bus", ./strace-static-x86_64: Process 5176 attached [pid 5175] <... symlink resumed>) = 0 [pid 5173] +++ exited with 0 +++ [pid 5060] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5175] memfd_create("syzkaller", 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5175] <... memfd_create resumed>) = 3 [pid 5174] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5176] set_robust_list(0x555556c07660, 24 [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5175] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5176] <... set_robust_list resumed>) = 0 [pid 5175] 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"..., 524288 [pid 5057] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5176] chdir("./18" [pid 5057] <... openat resumed>) = 4 [pid 5176] <... chdir resumed>) = 0 [pid 5057] newfstatat(4, "", [pid 5056] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5176] <... prctl resumed>) = 0 [pid 5057] getdents64(4, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5176] setpgid(0, 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5176] <... setpgid resumed>) = 0 [pid 5057] getdents64(4, [pid 5056] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(3, "", [ 65.560121][ T5174] loop2: detected capacity change from 0 to 1024 [pid 5057] close(4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5175] <... write resumed>) = 524288 [pid 5174] <... mount resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5176] <... openat resumed>) = 3 [pid 5056] getdents64(3, [pid 5176] write(3, "1000", 4 [pid 5060] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] rmdir("./17/bus" [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5176] <... write resumed>) = 4 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... rmdir resumed>) = 0 [pid 5056] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5176] close(3 [pid 5060] newfstatat(AT_FDCWD, "./16/bus", [pid 5176] <... close resumed>) = 0 [pid 5176] symlink("/dev/binderfs", "./binderfs" [pid 5175] munmap(0x7f138d200000, 138412032 [pid 5174] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5176] <... symlink resumed>) = 0 [pid 5175] <... munmap resumed>) = 0 [pid 5174] <... openat resumed>) = 3 [pid 5060] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5176] memfd_create("syzkaller", 0 [pid 5174] chdir("./bus" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5176] <... memfd_create resumed>) = 3 [pid 5175] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5174] <... chdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./17/binderfs", [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5175] <... openat resumed>) = 4 [pid 5174] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5175] ioctl(4, LOOP_SET_FD, 3 [pid 5174] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] unlink("./17/binderfs" [pid 5176] <... mmap resumed>) = 0x7f138d200000 [pid 5174] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... openat resumed>) = 4 [pid 5057] <... unlink resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5060] newfstatat(4, "", [pid 5056] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5176] 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"..., 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(AT_FDCWD, "./16/bus", [pid 5174] <... symlink resumed>) = 0 [pid 5060] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5174] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] close(4 [pid 5057] close(3 [pid 5060] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] rmdir("./16/bus" [pid 5057] rmdir("./17" [pid 5056] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5060] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] mkdir("./18", 0777 [pid 5056] newfstatat(4, "", [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] newfstatat(AT_FDCWD, "./16/binderfs", [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] getdents64(4, [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./16/binderfs" [pid 5174] <... creat resumed>) = 4 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5174] rename("./bus", "./file2" [pid 5060] <... unlink resumed>) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] getdents64(4, [pid 5174] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4 [pid 5175] <... ioctl resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... close resumed>) = 0 [pid 5174] memfd_create("syzkaller", 0 [pid 5060] close(3 [pid 5056] rmdir("./16/bus" [pid 5174] <... memfd_create resumed>) = 5 [pid 5175] close(3 [pid 5060] <... close resumed>) = 0 [pid 5175] <... close resumed>) = 0 [pid 5174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] rmdir("./16" [pid 5056] <... rmdir resumed>) = 0 [pid 5175] close(4) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5175] mkdir("./bus", 0777) = 0 [pid 5056] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5174] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5175] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5176] <... write resumed>) = 524288 [pid 5174] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] mkdir("./17", 0777 [pid 5056] newfstatat(AT_FDCWD, "./16/binderfs", [pid 5176] munmap(0x7f138d200000, 138412032 [pid 5174] <... write resumed>) = 524288 [pid 5060] <... mkdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5176] <... munmap resumed>) = 0 [pid 5056] unlink("./16/binderfs") = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./16") = 0 [ 65.650096][ T5175] loop5: detected capacity change from 0 to 1024 [pid 5176] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5175] <... mount resumed>) = 0 [pid 5174] munmap(0x7f138d200000, 138412032 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] mkdir("./17", 0777 [pid 5176] <... openat resumed>) = 4 [pid 5175] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5174] <... munmap resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5056] <... mkdir resumed>) = 0 [pid 5176] ioctl(4, LOOP_SET_FD, 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5175] <... openat resumed>) = 3 [pid 5057] <... ioctl resumed>) = 0 [pid 5175] chdir("./bus" [pid 5174] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5174] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5174] close(5 [pid 5175] <... chdir resumed>) = 0 [pid 5057] close(3 [pid 5175] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5174] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5174] creat("./file1", 000 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5176] <... ioctl resumed>) = 0 [pid 5176] close(3./strace-static-x86_64: Process 5177 attached ) = 0 [pid 5175] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5174] <... creat resumed>) = 5 [pid 5177] set_robust_list(0x555556c07660, 24 [pid 5176] close(4 [pid 5175] <... symlink resumed>) = 0 [pid 5174] exit_group(0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5177 [pid 5177] <... set_robust_list resumed>) = 0 [pid 5176] <... close resumed>) = 0 [pid 5175] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5174] <... exit_group resumed>) = ? [pid 5177] chdir("./18" [pid 5176] mkdir("./bus", 0777 [pid 5175] <... creat resumed>) = 4 [pid 5174] +++ exited with 0 +++ [pid 5060] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5176] <... mkdir resumed>) = 0 [pid 5175] rename("./bus", "./file2" [pid 5056] close(3 [pid 5177] <... chdir resumed>) = 0 [pid 5176] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5056] <... close resumed>) = 0 [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5175] <... rename resumed>) = -1 EEXIST (File exists) [ 65.714298][ T5176] loop3: detected capacity change from 0 to 1024 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5178 attached [pid 5175] memfd_create("syzkaller", 0 [pid 5060] close(3 [pid 5178] set_robust_list(0x555556c07660, 24 [pid 5177] <... prctl resumed>) = 0 [pid 5178] <... set_robust_list resumed>) = 0 [pid 5177] setpgid(0, 0 [pid 5178] chdir("./17" [pid 5177] <... setpgid resumed>) = 0 [pid 5178] <... chdir resumed>) = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5178] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5177] <... openat resumed>) = 3 [pid 5178] <... prctl resumed>) = 0 [pid 5177] write(3, "1000", 4 [pid 5178] setpgid(0, 0 [pid 5177] <... write resumed>) = 4 [pid 5178] <... setpgid resumed>) = 0 [pid 5177] close(3 [pid 5178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5177] <... close resumed>) = 0 [pid 5178] <... openat resumed>) = 3 [pid 5177] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5178] write(3, "1000", 4 [pid 5177] memfd_create("syzkaller", 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5178 [pid 5177] <... memfd_create resumed>) = 3 [pid 5177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5178] <... write resumed>) = 4 [pid 5177] <... mmap resumed>) = 0x7f138d200000 [pid 5176] <... mount resumed>) = 0 [pid 5175] <... memfd_create resumed>) = 5 [pid 5060] <... close resumed>) = 0 [pid 5178] close(3 [pid 5176] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5178] <... close resumed>) = 0 [pid 5176] <... openat resumed>) = 3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5178] symlink("/dev/binderfs", "./binderfs" [pid 5176] chdir("./bus" [pid 5178] <... symlink resumed>) = 0 [pid 5176] <... chdir resumed>) = 0 [pid 5175] <... mmap resumed>) = 0x7f138d200000 [pid 5058] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5179 attached [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5179 [pid 5058] <... openat resumed>) = 3 [pid 5176] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5179] set_robust_list(0x555556c07660, 24 [pid 5058] newfstatat(3, "", [pid 5179] <... set_robust_list resumed>) = 0 [pid 5178] memfd_create("syzkaller", 0 [pid 5177] 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"..., 524288 [pid 5176] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5179] chdir("./17" [pid 5058] getdents64(3, [pid 5178] <... memfd_create resumed>) = 3 [pid 5176] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5179] <... chdir resumed>) = 0 [pid 5178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5176] <... symlink resumed>) = 0 [pid 5175] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5178] <... mmap resumed>) = 0x7f138d200000 [pid 5176] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5179] <... prctl resumed>) = 0 [pid 5178] 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"..., 524288 [pid 5176] <... creat resumed>) = 4 [pid 5175] <... write resumed>) = 524288 [pid 5176] rename("./bus", "./file2" [pid 5179] setpgid(0, 0 [pid 5177] <... write resumed>) = 524288 [pid 5179] <... setpgid resumed>) = 0 [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5177] munmap(0x7f138d200000, 138412032) = 0 [pid 5179] <... openat resumed>) = 3 [pid 5175] munmap(0x7f138d200000, 138412032 [pid 5058] <... umount2 resumed>) = 0 [pid 5176] <... rename resumed>) = -1 EEXIST (File exists) [pid 5176] memfd_create("syzkaller", 0 [pid 5177] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5176] <... memfd_create resumed>) = 5 [pid 5177] <... openat resumed>) = 4 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5175] <... munmap resumed>) = 0 [pid 5177] ioctl(4, LOOP_SET_FD, 3 [pid 5176] <... mmap resumed>) = 0x7f138d200000 [pid 5179] write(3, "1000", 4 [pid 5176] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5175] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5175] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] newfstatat(AT_FDCWD, "./17/bus", [pid 5179] <... write resumed>) = 4 [pid 5175] close(5 [pid 5179] close(3 [pid 5175] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5179] <... close resumed>) = 0 [pid 5178] <... write resumed>) = 524288 [pid 5175] creat("./file1", 000 [pid 5058] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5179] symlink("/dev/binderfs", "./binderfs" [pid 5178] munmap(0x7f138d200000, 138412032 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5179] <... symlink resumed>) = 0 [pid 5178] <... munmap resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5179] memfd_create("syzkaller", 0 [pid 5178] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5175] <... creat resumed>) = 5 [pid 5058] <... openat resumed>) = 4 [pid 5058] newfstatat(4, "", [pid 5179] <... memfd_create resumed>) = 3 [pid 5178] <... openat resumed>) = 4 [pid 5175] exit_group(0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5175] <... exit_group resumed>) = ? [pid 5058] getdents64(4, [ 65.841382][ T5177] loop1: detected capacity change from 0 to 1024 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5178] ioctl(4, LOOP_SET_FD, 3 [pid 5177] <... ioctl resumed>) = 0 [pid 5176] <... write resumed>) = 524288 [pid 5175] +++ exited with 0 +++ [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5177] close(3 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5177] <... close resumed>) = 0 [pid 5176] munmap(0x7f138d200000, 138412032 [pid 5177] close(4 [pid 5176] <... munmap resumed>) = 0 [pid 5177] <... close resumed>) = 0 [pid 5061] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5179] <... mmap resumed>) = 0x7f138d200000 [pid 5178] <... ioctl resumed>) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(4 [pid 5177] mkdir("./bus", 0777) = 0 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./17/bus" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5177] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5176] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5061] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... rmdir resumed>) = 0 [pid 5176] close(5 [pid 5179] 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"..., 524288 [pid 5178] close(3 [pid 5176] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5058] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5178] <... close resumed>) = 0 [pid 5061] newfstatat(3, "", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5178] close(4) = 0 [pid 5177] <... mount resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] newfstatat(AT_FDCWD, "./17/binderfs", [pid 5178] mkdir("./bus", 0777 [pid 5177] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5176] creat("./file1", 000 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5178] <... mkdir resumed>) = 0 [pid 5177] <... openat resumed>) = 3 [pid 5061] getdents64(3, [pid 5058] unlink("./17/binderfs" [pid 5178] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5177] chdir("./bus" [pid 5058] <... unlink resumed>) = 0 [pid 5177] <... chdir resumed>) = 0 [pid 5177] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5058] getdents64(3, [pid 5177] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5177] <... symlink resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./17" [pid 5177] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5176] <... creat resumed>) = 5 [pid 5176] exit_group(0) = ? [pid 5058] <... rmdir resumed>) = 0 [pid 5178] <... mount resumed>) = 0 [pid 5058] mkdir("./18", 0777 [pid 5178] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5177] <... creat resumed>) = 4 [pid 5176] +++ exited with 0 +++ [pid 5058] <... mkdir resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5177] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5179] <... write resumed>) = 524288 [pid 5178] chdir("./bus" [pid 5061] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5178] <... chdir resumed>) = 0 [pid 5177] memfd_create("syzkaller", 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 3 [pid 5177] <... memfd_create resumed>) = 5 [pid 5059] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", [pid 5177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [ 65.883980][ T5178] loop0: detected capacity change from 0 to 1024 [pid 5179] munmap(0x7f138d200000, 138412032 [pid 5178] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5177] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5178] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] getdents64(3, [pid 5179] <... munmap resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5178] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5178] <... symlink resumed>) = 0 [pid 5177] <... write resumed>) = 524288 [pid 5061] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5179] <... openat resumed>) = 4 [pid 5178] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5179] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5179] <... ioctl resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./19/bus", [pid 5179] close(3 [pid 5178] <... creat resumed>) = 4 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5177] munmap(0x7f138d200000, 138412032 [pid 5179] <... close resumed>) = 0 [pid 5178] rename("./bus", "./file2" [pid 5177] <... munmap resumed>) = 0 [pid 5061] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... ioctl resumed>) = 0 [pid 5177] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5179] close(4 [pid 5177] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] close(3 [pid 5179] <... close resumed>) = 0 [pid 5177] close(5 [pid 5061] <... openat resumed>) = 4 [pid 5058] <... close resumed>) = 0 [pid 5179] mkdir("./bus", 0777 [pid 5177] <... close resumed>) = 0 [pid 5061] newfstatat(4, "", [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5179] <... mkdir resumed>) = 0 [pid 5179] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5178] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5178] memfd_create("syzkaller", 0 [pid 5061] getdents64(4, [pid 5059] newfstatat(AT_FDCWD, "./18/bus", [pid 5178] <... memfd_create resumed>) = 5 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5178] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5177] creat("./file1", 000./strace-static-x86_64: Process 5180 attached [ 65.957989][ T5179] loop4: detected capacity change from 0 to 1024 [pid 5061] close(4 [pid 5180] set_robust_list(0x555556c07660, 24 [pid 5179] <... mount resumed>) = 0 [pid 5178] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... close resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5180 [pid 5180] <... set_robust_list resumed>) = 0 [pid 5179] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5180] chdir("./18" [pid 5179] <... openat resumed>) = 3 [pid 5061] rmdir("./19/bus" [pid 5059] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5180] <... chdir resumed>) = 0 [pid 5179] chdir("./bus" [pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5179] <... chdir resumed>) = 0 [pid 5180] setpgid(0, 0 [pid 5179] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5177] <... creat resumed>) = 5 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5180] <... setpgid resumed>) = 0 [pid 5179] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5177] exit_group(0 [pid 5061] umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5179] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5177] <... exit_group resumed>) = ? [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... openat resumed>) = 4 [pid 5180] <... openat resumed>) = 3 [pid 5177] +++ exited with 0 +++ [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5177, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5180] write(3, "1000", 4 [pid 5178] <... write resumed>) = 524288 [pid 5061] newfstatat(AT_FDCWD, "./19/binderfs", [pid 5059] getdents64(4, [pid 5180] <... write resumed>) = 4 [pid 5180] close(3 [pid 5179] <... symlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5180] <... close resumed>) = 0 [pid 5179] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] getdents64(4, [pid 5057] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] unlink("./19/binderfs" [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... unlink resumed>) = 0 [pid 5059] close(4 [pid 5057] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5180] symlink("/dev/binderfs", "./binderfs" [pid 5061] getdents64(3, [pid 5059] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] rmdir("./18/bus" [pid 5057] newfstatat(3, "", [pid 5180] <... symlink resumed>) = 0 [pid 5061] close(3 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... close resumed>) = 0 [pid 5059] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5180] memfd_create("syzkaller", 0 [pid 5179] <... creat resumed>) = 4 [pid 5061] rmdir("./19" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5180] <... memfd_create resumed>) = 3 [pid 5179] rename("./bus", "./file2" [pid 5178] munmap(0x7f138d200000, 138412032 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./18/binderfs", [pid 5057] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5178] <... munmap resumed>) = 0 [pid 5061] mkdir("./20", 0777 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5180] <... mmap resumed>) = 0x7f138d200000 [pid 5179] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] unlink("./18/binderfs" [pid 5180] 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"..., 524288 [pid 5179] memfd_create("syzkaller", 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5179] <... memfd_create resumed>) = 5 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5178] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5179] <... mmap resumed>) = 0x7f138d200000 [pid 5178] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] getdents64(3, [pid 5178] close(5 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5179] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] close(3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./18/bus", [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] rmdir("./18") = 0 [pid 5059] mkdir("./19", 0777 [pid 5057] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5178] <... close resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5178] creat("./file1", 000 [pid 5057] newfstatat(4, "", [pid 5178] <... creat resumed>) = 5 [pid 5178] exit_group(0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5178] <... exit_group resumed>) = ? [pid 5178] +++ exited with 0 +++ [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] getdents64(4, [pid 5180] <... write resumed>) = 524288 [pid 5179] <... write resumed>) = 524288 [pid 5059] <... openat resumed>) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5180] munmap(0x7f138d200000, 138412032 [pid 5179] munmap(0x7f138d200000, 138412032 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5178, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5179] <... munmap resumed>) = 0 [pid 5056] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5180] <... munmap resumed>) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] getdents64(4, [pid 5056] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(3, "", [pid 5057] close(4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5179] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... close resumed>) = 0 [pid 5056] getdents64(3, [pid 5179] close(5 [pid 5057] rmdir("./18/bus" [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5180] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5179] <... close resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5180] <... openat resumed>) = 4 [pid 5180] ioctl(4, LOOP_SET_FD, 3 [pid 5056] <... umount2 resumed>) = 0 [pid 5056] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5179] creat("./file1", 000 [pid 5057] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./18/binderfs") = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./18" [pid 5061] <... ioctl resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./17/bus", [pid 5179] <... creat resumed>) = 5 [pid 5057] mkdir("./19", 0777 [pid 5180] <... ioctl resumed>) = 0 [pid 5179] exit_group(0 [pid 5061] close(3 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5179] <... exit_group resumed>) = ? [pid 5056] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5180] close(3 [pid 5061] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5180] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 4 [pid 5180] close(4 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] newfstatat(4, "", [pid 5180] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5180] mkdir("./bus", 0777) = 0 [pid 5179] +++ exited with 0 +++ [pid 5059] <... ioctl resumed>) = 0 [pid 5056] getdents64(4, [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- ./strace-static-x86_64: Process 5181 attached [pid 5180] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5181 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5059] close(3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5181] set_robust_list(0x555556c07660, 24) = 0 [pid 5181] chdir("./20") = 0 [pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5060] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... close resumed>) = 0 [pid 5181] <... prctl resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5181] setpgid(0, 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5181] <... setpgid resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [ 66.117531][ T5180] loop2: detected capacity change from 0 to 1024 [pid 5181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5182 attached [pid 5180] <... mount resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5182 [pid 5056] getdents64(4, [pid 5180] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] newfstatat(3, "", [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5181] <... openat resumed>) = 3 [pid 5180] <... openat resumed>) = 3 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] close(4 [pid 5180] chdir("./bus" [pid 5060] getdents64(3, [pid 5056] <... close resumed>) = 0 [pid 5182] set_robust_list(0x555556c07660, 24 [pid 5181] write(3, "1000", 4 [pid 5180] <... chdir resumed>) = 0 [pid 5057] close(3 [pid 5182] <... set_robust_list resumed>) = 0 [pid 5181] <... write resumed>) = 4 [pid 5180] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5056] rmdir("./17/bus" [pid 5182] chdir("./19" [pid 5181] close(3 [pid 5182] <... chdir resumed>) = 0 [pid 5181] <... close resumed>) = 0 [pid 5180] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5181] symlink("/dev/binderfs", "./binderfs" [pid 5180] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5183 attached [pid 5182] <... prctl resumed>) = 0 [pid 5181] <... symlink resumed>) = 0 [pid 5180] <... symlink resumed>) = 0 [pid 5060] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5183 [pid 5182] setpgid(0, 0 [pid 5181] memfd_create("syzkaller", 0 [pid 5182] <... setpgid resumed>) = 0 [pid 5181] <... memfd_create resumed>) = 3 [pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5182] <... openat resumed>) = 3 [pid 5181] <... mmap resumed>) = 0x7f138d200000 [pid 5182] write(3, "1000", 4 [pid 5181] 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"..., 524288 [pid 5180] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... umount2 resumed>) = 0 [pid 5056] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5183] set_robust_list(0x555556c07660, 24 [pid 5182] <... write resumed>) = 4 [pid 5183] <... set_robust_list resumed>) = 0 [pid 5182] close(3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5183] chdir("./19" [pid 5182] <... close resumed>) = 0 [pid 5183] <... chdir resumed>) = 0 [pid 5182] symlink("/dev/binderfs", "./binderfs" [pid 5056] newfstatat(AT_FDCWD, "./17/binderfs", [pid 5182] <... symlink resumed>) = 0 [pid 5180] <... creat resumed>) = 4 [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5182] memfd_create("syzkaller", 0 [pid 5183] <... prctl resumed>) = 0 [pid 5182] <... memfd_create resumed>) = 3 [pid 5181] <... write resumed>) = 524288 [pid 5180] rename("./bus", "./file2" [pid 5060] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5183] setpgid(0, 0 [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5180] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] unlink("./17/binderfs" [pid 5060] newfstatat(AT_FDCWD, "./17/bus", [pid 5183] <... setpgid resumed>) = 0 [pid 5182] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5180] memfd_create("syzkaller", 0 [pid 5060] umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5180] <... memfd_create resumed>) = 5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5183] <... openat resumed>) = 3 [pid 5181] munmap(0x7f138d200000, 138412032 [pid 5183] write(3, "1000", 4) = 4 [pid 5183] close(3) = 0 [pid 5183] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5183] memfd_create("syzkaller", 0) = 3 [pid 5183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5182] 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"..., 524288 [pid 5181] <... munmap resumed>) = 0 [pid 5180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5181] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5056] close(3 [pid 5060] <... openat resumed>) = 4 [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./17" [pid 5180] <... mmap resumed>) = 0x7f138d200000 [pid 5060] newfstatat(4, "", [pid 5181] <... openat resumed>) = 4 [pid 5183] 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"..., 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5060] getdents64(4, [pid 5181] ioctl(4, LOOP_SET_FD, 3 [pid 5180] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] mkdir("./18", 0777 [pid 5183] <... write resumed>) = 524288 [pid 5060] getdents64(4, [pid 5183] munmap(0x7f138d200000, 138412032 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5183] <... munmap resumed>) = 0 [pid 5060] close(4 [pid 5183] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5182] <... write resumed>) = 524288 [pid 5181] <... ioctl resumed>) = 0 [pid 5180] <... write resumed>) = 524288 [pid 5060] <... close resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5183] <... openat resumed>) = 4 [pid 5181] close(3 [pid 5180] munmap(0x7f138d200000, 138412032 [pid 5060] rmdir("./17/bus" [pid 5183] ioctl(4, LOOP_SET_FD, 3 [pid 5182] munmap(0x7f138d200000, 138412032 [pid 5181] <... close resumed>) = 0 [pid 5180] <... munmap resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5182] <... munmap resumed>) = 0 [pid 5181] close(4 [pid 5060] <... rmdir resumed>) = 0 [pid 5181] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5060] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5181] mkdir("./bus", 0777) = 0 [pid 5183] <... ioctl resumed>) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5181] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5180] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5183] close(3 [pid 5182] <... openat resumed>) = 4 [pid 5180] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 66.266082][ T5181] loop5: detected capacity change from 0 to 1024 [ 66.291374][ T5183] loop1: detected capacity change from 0 to 1024 [pid 5060] newfstatat(AT_FDCWD, "./17/binderfs", [pid 5183] <... close resumed>) = 0 [pid 5182] ioctl(4, LOOP_SET_FD, 3 [pid 5180] close(5 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5183] close(4 [pid 5182] <... ioctl resumed>) = 0 [pid 5180] <... close resumed>) = 0 [pid 5060] unlink("./17/binderfs" [pid 5183] <... close resumed>) = 0 [pid 5183] mkdir("./bus", 0777) = 0 [pid 5183] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] <... unlink resumed>) = 0 [pid 5180] creat("./file1", 000 [pid 5060] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3) = 0 [pid 5060] rmdir("./17" [pid 5181] <... mount resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5180] <... creat resumed>) = 5 [pid 5182] close(3 [pid 5181] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5180] exit_group(0 [pid 5182] <... close resumed>) = 0 [pid 5181] <... openat resumed>) = 3 [pid 5180] <... exit_group resumed>) = ? [pid 5182] close(4 [pid 5183] <... mount resumed>) = 0 [pid 5182] <... close resumed>) = 0 [pid 5181] chdir("./bus" [pid 5183] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5182] mkdir("./bus", 0777 [pid 5181] <... chdir resumed>) = 0 [pid 5180] +++ exited with 0 +++ [pid 5060] mkdir("./18", 0777 [pid 5183] <... openat resumed>) = 3 [pid 5182] <... mkdir resumed>) = 0 [pid 5181] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5183] chdir("./bus" [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5180, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5058] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5183] <... chdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5183] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5181] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5183] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5182] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5181] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... openat resumed>) = 3 [pid 5183] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... mkdir resumed>) = 0 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5181] <... symlink resumed>) = 0 [pid 5183] <... symlink resumed>) = 0 [pid 5183] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5181] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] <... umount2 resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5056] close(3 [pid 5181] <... creat resumed>) = 4 [pid 5181] rename("./bus", "./file2" [ 66.318351][ T5182] loop3: detected capacity change from 0 to 1024 [pid 5058] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5182] <... mount resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5181] <... rename resumed>) = -1 EEXIST (File exists) [pid 5183] <... creat resumed>) = 4 [pid 5182] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5181] memfd_create("syzkaller", 0 [pid 5183] rename("./bus", "./file2" [pid 5182] <... openat resumed>) = 3 [pid 5181] <... memfd_create resumed>) = 5 [pid 5182] chdir("./bus" [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] newfstatat(AT_FDCWD, "./18/bus", [pid 5182] <... chdir resumed>) = 0 [pid 5181] <... mmap resumed>) = 0x7f138d200000 [pid 5183] <... rename resumed>) = -1 EEXIST (File exists) [pid 5182] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5182] <... openat resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 5184 attached [pid 5183] memfd_create("syzkaller", 0 [pid 5182] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5181] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5184] set_robust_list(0x555556c07660, 24 [pid 5183] <... memfd_create resumed>) = 5 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5184 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5184] <... set_robust_list resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5184] chdir("./18" [pid 5058] <... openat resumed>) = 4 [pid 5058] newfstatat(4, "", [pid 5183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5184] <... chdir resumed>) = 0 [pid 5183] <... mmap resumed>) = 0x7f138d200000 [pid 5058] getdents64(4, [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5184] setpgid(0, 0) = 0 [pid 5058] getdents64(4, [pid 5183] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5182] <... symlink resumed>) = 0 [pid 5181] <... write resumed>) = 524288 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5184] <... openat resumed>) = 3 [pid 5182] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... ioctl resumed>) = 0 [pid 5184] write(3, "1000", 4 [pid 5183] <... write resumed>) = 524288 [pid 5181] munmap(0x7f138d200000, 138412032 [pid 5060] close(3 [pid 5058] close(4 [pid 5184] <... write resumed>) = 4 [pid 5060] <... close resumed>) = 0 [pid 5184] close(3) = 0 [pid 5058] <... close resumed>) = 0 [pid 5184] symlink("/dev/binderfs", "./binderfs" [pid 5058] rmdir("./18/bus" [pid 5184] <... symlink resumed>) = 0 [pid 5181] <... munmap resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... rmdir resumed>) = 0 [pid 5184] memfd_create("syzkaller", 0 [pid 5183] munmap(0x7f138d200000, 138412032) = 0 [pid 5183] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 5185 attached [pid 5184] <... memfd_create resumed>) = 3 [pid 5182] <... creat resumed>) = 4 [pid 5181] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5183] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5183] close(5) = 0 [pid 5183] creat("./file1", 000 [pid 5185] set_robust_list(0x555556c07660, 24 [pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5182] rename("./bus", "./file2" [pid 5181] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5185 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5185] <... set_robust_list resumed>) = 0 [pid 5184] <... mmap resumed>) = 0x7f138d200000 [pid 5181] close(5 [pid 5058] newfstatat(AT_FDCWD, "./18/binderfs", [pid 5182] <... rename resumed>) = -1 EEXIST (File exists) [pid 5183] <... creat resumed>) = 5 [pid 5183] exit_group(0) = ? [pid 5184] 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"..., 524288 [pid 5183] +++ exited with 0 +++ [pid 5182] memfd_create("syzkaller", 0 [pid 5181] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5185] chdir("./18" [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5183, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5058] unlink("./18/binderfs" [pid 5182] <... memfd_create resumed>) = 5 [pid 5057] umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5185] <... chdir resumed>) = 0 [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5182] <... mmap resumed>) = 0x7f138d200000 [pid 5058] getdents64(3, [pid 5185] <... prctl resumed>) = 0 [pid 5184] <... write resumed>) = 524288 [pid 5181] creat("./file1", 000 [pid 5057] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5185] setpgid(0, 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5185] <... setpgid resumed>) = 0 [pid 5058] close(3 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5058] rmdir("./18" [pid 5184] munmap(0x7f138d200000, 138412032 [pid 5057] newfstatat(3, "", [pid 5185] <... openat resumed>) = 3 [pid 5184] <... munmap resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] mkdir("./19", 0777 [pid 5057] getdents64(3, [pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5184] <... openat resumed>) = 4 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5185] write(3, "1000", 4 [pid 5184] ioctl(4, LOOP_SET_FD, 3 [pid 5182] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5185] <... write resumed>) = 4 [pid 5182] <... write resumed>) = 524288 [pid 5185] close(3) = 0 [pid 5185] symlink("/dev/binderfs", "./binderfs" [pid 5058] <... openat resumed>) = 3 [pid 5185] <... symlink resumed>) = 0 [pid 5182] munmap(0x7f138d200000, 138412032) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5185] memfd_create("syzkaller", 0 [pid 5181] <... creat resumed>) = 5 [pid 5057] <... umount2 resumed>) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5182] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5182] close(5 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./19/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5181] exit_group(0 [pid 5185] <... memfd_create resumed>) = 3 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5181] <... exit_group resumed>) = ? [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5185] <... mmap resumed>) = 0x7f138d200000 [pid 5057] rmdir("./19/bus") = 0 [pid 5057] umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5185] 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"..., 524288 [pid 5184] <... ioctl resumed>) = 0 [pid 5182] <... close resumed>) = 0 [pid 5181] +++ exited with 0 +++ [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5184] close(3 [pid 5182] creat("./file1", 000 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5181, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5057] newfstatat(AT_FDCWD, "./19/binderfs", [pid 5184] <... close resumed>) = 0 [pid 5061] umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5184] close(4 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5184] <... close resumed>) = 0 [pid 5182] <... creat resumed>) = 5 [pid 5061] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] unlink("./19/binderfs" [pid 5184] mkdir("./bus", 0777 [pid 5182] exit_group(0 [pid 5061] <... openat resumed>) = 3 [pid 5057] <... unlink resumed>) = 0 [pid 5184] <... mkdir resumed>) = 0 [pid 5182] <... exit_group resumed>) = ? [pid 5061] newfstatat(3, "", [pid 5057] getdents64(3, [pid 5182] +++ exited with 0 +++ [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5184] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(3 [pid 5185] <... write resumed>) = 524288 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5185] munmap(0x7f138d200000, 138412032 [pid 5059] umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5185] <... munmap resumed>) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./19" [pid 5185] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5185] <... openat resumed>) = 4 [ 66.514250][ T5184] loop0: detected capacity change from 0 to 1024 [pid 5059] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5185] ioctl(4, LOOP_SET_FD, 3 [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", [pid 5061] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./20/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] mkdir("./20", 0777) = 0 [pid 5184] <... mount resumed>) = 0 [pid 5061] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5058] <... ioctl resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] close(3 [pid 5185] <... ioctl resumed>) = 0 [pid 5184] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5185] close(3 [pid 5184] <... openat resumed>) = 3 [pid 5061] <... openat resumed>) = 4 [pid 5185] <... close resumed>) = 0 [pid 5184] chdir("./bus" [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5185] close(4 [pid 5184] <... chdir resumed>) = 0 [pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5185] <... close resumed>) = 0 [pid 5184] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5185] mkdir("./bus", 0777 [pid 5184] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] newfstatat(4, "", [pid 5185] <... mkdir resumed>) = 0 [pid 5184] <... symlink resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5185] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5184] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./20/bus") = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5186 [pid 5061] umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5186 attached ) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./20/binderfs") = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5061] rmdir("./20" [pid 5184] <... creat resumed>) = 4 [pid 5061] <... rmdir resumed>) = 0 [pid 5184] rename("./bus", "./file2" [pid 5061] mkdir("./21", 0777 [pid 5184] <... rename resumed>) = -1 EEXIST (File exists) [pid 5184] memfd_create("syzkaller", 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5184] <... memfd_create resumed>) = 5 [pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5186] set_robust_list(0x555556c07660, 24 [pid 5184] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... umount2 resumed>) = 0 [ 66.574181][ T5185] loop4: detected capacity change from 0 to 1024 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5186] <... set_robust_list resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5186] chdir("./19" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5186] <... chdir resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./19/bus", [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5186] <... prctl resumed>) = 0 [pid 5059] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5186] setpgid(0, 0) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... openat resumed>) = 4 [pid 5186] <... openat resumed>) = 3 [pid 5185] <... mount resumed>) = 0 [pid 5059] newfstatat(4, "", [pid 5186] write(3, "1000", 4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5186] <... write resumed>) = 4 [pid 5185] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] getdents64(4, [pid 5186] close(3 [pid 5185] <... openat resumed>) = 3 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5186] <... close resumed>) = 0 [pid 5185] chdir("./bus" [pid 5059] getdents64(4, [pid 5186] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5186] <... symlink resumed>) = 0 [pid 5185] <... chdir resumed>) = 0 [pid 5059] close(4 [pid 5057] <... ioctl resumed>) = 0 [pid 5186] memfd_create("syzkaller", 0 [pid 5185] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./19/bus") = 0 [pid 5184] <... write resumed>) = 524288 [pid 5184] munmap(0x7f138d200000, 138412032 [pid 5057] close(3 [pid 5186] <... memfd_create resumed>) = 3 [pid 5185] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5184] <... munmap resumed>) = 0 [pid 5059] umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5185] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./19/binderfs", [pid 5185] <... symlink resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5185] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] unlink("./19/binderfs"./strace-static-x86_64: Process 5187 attached [pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... unlink resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5187 [pid 5186] <... mmap resumed>) = 0x7f138d200000 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5187] set_robust_list(0x555556c07660, 24 [pid 5186] 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"..., 524288 [pid 5185] <... creat resumed>) = 4 [pid 5184] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... ioctl resumed>) = 0 [pid 5059] rmdir("./19" [pid 5185] rename("./bus", "./file2" [pid 5059] <... rmdir resumed>) = 0 [pid 5185] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] mkdir("./20", 0777 [pid 5185] memfd_create("syzkaller", 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5185] <... memfd_create resumed>) = 5 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5187] <... set_robust_list resumed>) = 0 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5184] close(5 [pid 5059] <... openat resumed>) = 3 [pid 5187] chdir("./20" [pid 5185] <... mmap resumed>) = 0x7f138d200000 [pid 5185] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5184] <... close resumed>) = 0 [pid 5187] <... chdir resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5061] close(3 [pid 5187] setpgid(0, 0 [pid 5061] <... close resumed>) = 0 [pid 5187] <... setpgid resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5188 attached [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5188] set_robust_list(0x555556c07660, 24) = 0 [pid 5188] chdir("./21" [pid 5187] <... openat resumed>) = 3 [pid 5185] <... write resumed>) = 524288 [pid 5188] <... chdir resumed>) = 0 [pid 5187] write(3, "1000", 4 [pid 5184] creat("./file1", 000 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5188 [pid 5187] <... write resumed>) = 4 [pid 5187] close(3 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5187] <... close resumed>) = 0 [pid 5184] <... creat resumed>) = 5 [pid 5188] <... prctl resumed>) = 0 [pid 5188] setpgid(0, 0) = 0 [pid 5186] <... write resumed>) = 524288 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5184] exit_group(0 [pid 5188] write(3, "1000", 4 [pid 5187] symlink("/dev/binderfs", "./binderfs" [pid 5186] munmap(0x7f138d200000, 138412032 [pid 5185] munmap(0x7f138d200000, 138412032 [pid 5059] <... ioctl resumed>) = 0 [pid 5184] <... exit_group resumed>) = ? [pid 5188] <... write resumed>) = 4 [pid 5186] <... munmap resumed>) = 0 [pid 5188] close(3 [pid 5187] <... symlink resumed>) = 0 [pid 5185] <... munmap resumed>) = 0 [pid 5184] +++ exited with 0 +++ [pid 5188] <... close resumed>) = 0 [pid 5187] memfd_create("syzkaller", 0 [pid 5186] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5185] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5184, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5188] symlink("/dev/binderfs", "./binderfs" [pid 5186] <... openat resumed>) = 4 [pid 5185] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5188] <... symlink resumed>) = 0 [pid 5186] ioctl(4, LOOP_SET_FD, 3 [pid 5185] close(5 [pid 5059] close(3 [pid 5188] memfd_create("syzkaller", 0 [pid 5187] <... memfd_create resumed>) = 3 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5187] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5187] 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"..., 524288 [pid 5185] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5188] <... memfd_create resumed>) = 3 [pid 5059] <... close resumed>) = 0 [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5188] <... mmap resumed>) = 0x7f138d200000 [pid 5185] creat("./file1", 000 [pid 5056] newfstatat(3, "", ./strace-static-x86_64: Process 5189 attached {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5189] set_robust_list(0x555556c07660, 24 [pid 5056] getdents64(3, [pid 5189] <... set_robust_list resumed>) = 0 [pid 5189] chdir("./20" [pid 5185] <... creat resumed>) = 5 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5189 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5189] <... chdir resumed>) = 0 [pid 5185] exit_group(0 [pid 5056] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5189] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5188] 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"..., 524288 [pid 5189] <... prctl resumed>) = 0 [pid 5189] setpgid(0, 0 [pid 5185] <... exit_group resumed>) = ? [pid 5189] <... setpgid resumed>) = 0 [pid 5186] <... ioctl resumed>) = 0 [pid 5185] +++ exited with 0 +++ [pid 5189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5188] <... write resumed>) = 524288 [pid 5186] close(3 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5056] <... umount2 resumed>) = 0 [pid 5189] <... openat resumed>) = 3 [pid 5186] <... close resumed>) = 0 [pid 5188] munmap(0x7f138d200000, 138412032 [pid 5056] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5189] write(3, "1000", 4 [pid 5187] <... write resumed>) = 524288 [pid 5186] close(4 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5189] <... write resumed>) = 4 [pid 5188] <... munmap resumed>) = 0 [pid 5186] <... close resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./18/bus", [pid 5189] close(3 [pid 5188] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5187] munmap(0x7f138d200000, 138412032 [pid 5186] mkdir("./bus", 0777 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5186] <... mkdir resumed>) = 0 [pid 5060] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5189] <... close resumed>) = 0 [pid 5189] symlink("/dev/binderfs", "./binderfs" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 66.743775][ T5186] loop2: detected capacity change from 0 to 1024 [pid 5189] <... symlink resumed>) = 0 [pid 5188] <... openat resumed>) = 4 [pid 5187] <... munmap resumed>) = 0 [pid 5186] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] <... openat resumed>) = 3 [pid 5056] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5188] ioctl(4, LOOP_SET_FD, 3 [pid 5060] newfstatat(3, "", [pid 5189] memfd_create("syzkaller", 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5189] <... memfd_create resumed>) = 3 [pid 5188] <... ioctl resumed>) = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5189] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5187] <... openat resumed>) = 4 [pid 5056] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4 [pid 5187] ioctl(4, LOOP_SET_FD, 3 [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./18/bus" [pid 5189] 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"..., 524288 [pid 5187] <... ioctl resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5056] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5189] <... write resumed>) = 524288 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./18/binderfs" [pid 5187] close(3 [pid 5056] <... unlink resumed>) = 0 [pid 5056] getdents64(3, [pid 5187] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5186] <... mount resumed>) = 0 [pid 5056] close(3 [pid 5189] munmap(0x7f138d200000, 138412032 [pid 5188] close(3 [pid 5187] close(4 [pid 5186] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5187] <... close resumed>) = 0 [pid 5186] <... openat resumed>) = 3 [pid 5060] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./18" [pid 5188] <... close resumed>) = 0 [pid 5187] mkdir("./bus", 0777 [pid 5186] chdir("./bus" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5189] <... munmap resumed>) = 0 [pid 5188] close(4 [pid 5187] <... mkdir resumed>) = 0 [pid 5186] <... chdir resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./18/bus", [pid 5056] mkdir("./19", 0777 [pid 5189] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5188] <... close resumed>) = 0 [pid 5187] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5186] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5189] <... openat resumed>) = 4 [ 66.796238][ T5188] loop5: detected capacity change from 0 to 1024 [ 66.821048][ T5187] loop1: detected capacity change from 0 to 1024 [pid 5188] mkdir("./bus", 0777 [pid 5186] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... mkdir resumed>) = 0 [pid 5188] <... mkdir resumed>) = 0 [pid 5186] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5189] ioctl(4, LOOP_SET_FD, 3 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5189] <... ioctl resumed>) = 0 [pid 5188] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5187] <... mount resumed>) = 0 [pid 5186] <... symlink resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... openat resumed>) = 3 [pid 5187] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5187] chdir("./bus") = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5187] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... openat resumed>) = 4 [pid 5187] <... symlink resumed>) = 0 [pid 5186] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5187] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] getdents64(4, [pid 5186] <... creat resumed>) = 4 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5186] rename("./bus", "./file2" [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5186] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] close(4 [pid 5186] memfd_create("syzkaller", 0 [pid 5060] <... close resumed>) = 0 [pid 5187] <... creat resumed>) = 4 [pid 5186] <... memfd_create resumed>) = 5 [pid 5060] rmdir("./18/bus" [pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5187] rename("./bus", "./file2" [pid 5186] <... mmap resumed>) = 0x7f138d200000 [pid 5188] <... mount resumed>) = 0 [pid 5060] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5186] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./18/binderfs", [pid 5189] close(3 [pid 5188] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5187] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5189] <... close resumed>) = 0 [pid 5060] unlink("./18/binderfs" [pid 5187] memfd_create("syzkaller", 0 [pid 5189] close(4 [pid 5188] <... openat resumed>) = 3 [pid 5187] <... memfd_create resumed>) = 5 [pid 5186] <... write resumed>) = 524288 [pid 5060] <... unlink resumed>) = 0 [pid 5189] <... close resumed>) = 0 [pid 5186] munmap(0x7f138d200000, 138412032 [pid 5060] getdents64(3, [pid 5189] mkdir("./bus", 0777 [pid 5188] chdir("./bus" [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5189] <... mkdir resumed>) = 0 [pid 5188] <... chdir resumed>) = 0 [pid 5186] <... munmap resumed>) = 0 [pid 5060] close(3 [pid 5189] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5187] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... close resumed>) = 0 [ 66.865757][ T5189] loop3: detected capacity change from 0 to 1024 [pid 5186] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] rmdir("./18") = 0 [pid 5186] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5186] close(5 [pid 5189] <... mount resumed>) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5187] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] mkdir("./19", 0777 [pid 5056] <... ioctl resumed>) = 0 [pid 5189] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5187] <... write resumed>) = 524288 [pid 5186] <... close resumed>) = 0 [pid 5056] close(3 [pid 5189] <... openat resumed>) = 3 [pid 5188] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5187] munmap(0x7f138d200000, 138412032 [pid 5060] <... mkdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5189] chdir("./bus" [pid 5188] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5186] creat("./file1", 000 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 ./strace-static-x86_64: Process 5190 attached [pid 5189] <... chdir resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5190 [pid 5190] set_robust_list(0x555556c07660, 24 [pid 5189] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5190] <... set_robust_list resumed>) = 0 [pid 5190] chdir("./19" [pid 5189] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5188] <... symlink resumed>) = 0 [pid 5187] <... munmap resumed>) = 0 [pid 5186] <... creat resumed>) = 5 [pid 5190] <... chdir resumed>) = 0 [pid 5189] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5188] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5187] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5190] setpgid(0, 0) = 0 [pid 5186] exit_group(0 [pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5186] <... exit_group resumed>) = ? [pid 5190] <... openat resumed>) = 3 [pid 5187] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5186] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5058] umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5188] <... creat resumed>) = 4 [pid 5190] write(3, "1000", 4 [pid 5189] <... symlink resumed>) = 0 [pid 5187] close(5 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5188] rename("./bus", "./file2" [pid 5190] <... write resumed>) = 4 [pid 5189] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5190] close(3 [pid 5189] <... creat resumed>) = 4 [pid 5188] <... rename resumed>) = -1 EEXIST (File exists) [pid 5187] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5190] <... close resumed>) = 0 [pid 5189] rename("./bus", "./file2" [pid 5188] memfd_create("syzkaller", 0 [pid 5187] creat("./file1", 000 [pid 5058] newfstatat(3, "", [pid 5190] symlink("/dev/binderfs", "./binderfs" [pid 5188] <... memfd_create resumed>) = 5 [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5190] <... symlink resumed>) = 0 [pid 5188] <... mmap resumed>) = 0x7f138d200000 [pid 5058] getdents64(3, [pid 5190] memfd_create("syzkaller", 0 [pid 5189] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5189] memfd_create("syzkaller", 0 [pid 5190] <... memfd_create resumed>) = 3 [pid 5189] <... memfd_create resumed>) = 5 [pid 5058] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5190] <... mmap resumed>) = 0x7f138d200000 [pid 5189] <... mmap resumed>) = 0x7f138d200000 [pid 5188] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5187] <... creat resumed>) = 5 [pid 5187] exit_group(0 [pid 5189] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5187] <... exit_group resumed>) = ? [pid 5187] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5187, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5057] umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5190] 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"..., 524288 [pid 5189] <... write resumed>) = 524288 [pid 5060] <... ioctl resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", [pid 5060] close(3) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 ./strace-static-x86_64: Process 5191 attached [pid 5057] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5191] set_robust_list(0x555556c07660, 24 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5191 [pid 5191] <... set_robust_list resumed>) = 0 [pid 5191] chdir("./19") = 0 [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5188] <... write resumed>) = 524288 [pid 5191] <... prctl resumed>) = 0 [pid 5191] setpgid(0, 0) = 0 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5188] munmap(0x7f138d200000, 138412032 [pid 5058] <... umount2 resumed>) = 0 [pid 5189] munmap(0x7f138d200000, 138412032 [pid 5191] <... openat resumed>) = 3 [pid 5189] <... munmap resumed>) = 0 [pid 5188] <... munmap resumed>) = 0 [pid 5058] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5191] write(3, "1000", 4 [pid 5190] <... write resumed>) = 524288 [pid 5188] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5191] <... write resumed>) = 4 [pid 5189] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5191] close(3 [pid 5190] munmap(0x7f138d200000, 138412032 [pid 5189] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5191] <... close resumed>) = 0 [pid 5191] symlink("/dev/binderfs", "./binderfs" [pid 5190] <... munmap resumed>) = 0 [pid 5189] close(5 [pid 5188] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] newfstatat(AT_FDCWD, "./19/bus", [pid 5191] <... symlink resumed>) = 0 [pid 5191] memfd_create("syzkaller", 0 [pid 5188] close(5 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5058] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5191] <... memfd_create resumed>) = 3 [pid 5190] ioctl(4, LOOP_SET_FD, 3 [pid 5188] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5191] <... mmap resumed>) = 0x7f138d200000 [pid 5189] <... close resumed>) = 0 [pid 5189] creat("./file1", 000 [pid 5058] <... openat resumed>) = 4 [pid 5191] 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"..., 524288 [pid 5188] creat("./file1", 000 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5189] <... creat resumed>) = 5 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5189] exit_group(0 [pid 5188] <... creat resumed>) = 5 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5188] exit_group(0 [pid 5058] close(4 [pid 5189] <... exit_group resumed>) = ? [pid 5191] <... write resumed>) = 524288 [pid 5189] +++ exited with 0 +++ [pid 5188] <... exit_group resumed>) = ? [pid 5058] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5189, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5058] rmdir("./19/bus" [pid 5059] umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5190] <... ioctl resumed>) = 0 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5188] +++ exited with 0 +++ [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... rmdir resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5059] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(AT_FDCWD, "./19/binderfs", [pid 5190] close(3 [pid 5061] <... openat resumed>) = 3 [pid 5190] <... close resumed>) = 0 [pid 5061] newfstatat(3, "", [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5190] close(4 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] unlink("./19/binderfs" [pid 5190] <... close resumed>) = 0 [pid 5061] getdents64(3, [pid 5190] mkdir("./bus", 0777 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5191] munmap(0x7f138d200000, 138412032 [pid 5190] <... mkdir resumed>) = 0 [pid 5061] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... unlink resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./20/bus", [pid 5191] <... munmap resumed>) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] close(3 [pid 5057] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] rmdir("./19" [pid 5057] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [ 67.059273][ T5190] loop0: detected capacity change from 0 to 1024 [pid 5190] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5191] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5191] <... openat resumed>) = 4 [pid 5059] <... umount2 resumed>) = 0 [pid 5191] ioctl(4, LOOP_SET_FD, 3 [pid 5058] mkdir("./20", 0777 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5191] <... ioctl resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] getdents64(4, [pid 5191] close(3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... openat resumed>) = 3 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5191] <... close resumed>) = 0 [pid 5057] close(4 [pid 5191] close(4) = 0 [pid 5190] <... mount resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./20/bus", [pid 5057] <... close resumed>) = 0 [pid 5191] mkdir("./bus", 0777 [pid 5190] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5057] rmdir("./20/bus" [pid 5190] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5190] chdir("./bus" [pid 5061] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5190] <... chdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... rmdir resumed>) = 0 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] newfstatat(AT_FDCWD, "./21/bus", [pid 5059] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5190] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5190] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5057] newfstatat(AT_FDCWD, "./20/binderfs", [pid 5061] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5191] <... mkdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] unlink("./20/binderfs" [pid 5190] <... symlink resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5191] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5190] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... unlink resumed>) = 0 [pid 5061] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./21/bus") = 0 [pid 5190] <... creat resumed>) = 4 [pid 5061] umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./21/binderfs", [pid 5190] rename("./bus", "./file2" [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5057] getdents64(3, [pid 5190] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] unlink("./21/binderfs" [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5061] getdents64(3, [pid 5190] memfd_create("syzkaller", 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5061] rmdir("./21") = 0 [pid 5057] close(3) = 0 [pid 5190] <... memfd_create resumed>) = 5 [pid 5059] newfstatat(4, "", [pid 5057] rmdir("./20" [pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] mkdir("./22", 0777) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5190] <... mmap resumed>) = 0x7f138d200000 [pid 5057] mkdir("./21", 0777 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5191] <... mount resumed>) = 0 [pid 5059] getdents64(4, [pid 5191] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [ 67.108904][ T5191] loop4: detected capacity change from 0 to 1024 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] getdents64(4, [pid 5057] <... openat resumed>) = 3 [pid 5191] <... openat resumed>) = 3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5191] chdir("./bus" [pid 5059] close(4 [pid 5058] <... ioctl resumed>) = 0 [pid 5191] <... chdir resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] <... close resumed>) = 0 [pid 5190] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5191] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] rmdir("./20/bus") = 0 [pid 5191] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5191] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] close(3 [pid 5059] unlink("./20/binderfs" [pid 5058] <... close resumed>) = 0 [pid 5191] <... symlink resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5190] <... write resumed>) = 524288 [pid 5190] munmap(0x7f138d200000, 138412032) = 0 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5190] close(5 [pid 5059] getdents64(3, [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5192 [pid 5057] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5192 attached [pid 5191] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5192] set_robust_list(0x555556c07660, 24) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3 [pid 5192] chdir("./20" [pid 5059] <... close resumed>) = 0 [pid 5192] <... chdir resumed>) = 0 [pid 5059] rmdir("./20" [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5191] <... creat resumed>) = 4 [pid 5061] <... ioctl resumed>) = 0 [pid 5057] close(3 [pid 5192] <... prctl resumed>) = 0 [pid 5191] rename("./bus", "./file2" [pid 5059] <... rmdir resumed>) = 0 [pid 5192] setpgid(0, 0 [pid 5057] <... close resumed>) = 0 [pid 5192] <... setpgid resumed>) = 0 [pid 5190] <... close resumed>) = 0 [pid 5059] mkdir("./21", 0777 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] close(3 [pid 5190] creat("./file1", 000./strace-static-x86_64: Process 5193 attached [pid 5193] set_robust_list(0x555556c07660, 24 [pid 5059] <... mkdir resumed>) = 0 [pid 5192] <... openat resumed>) = 3 [pid 5190] <... creat resumed>) = 5 [pid 5061] <... close resumed>) = 0 [pid 5191] <... rename resumed>) = -1 EEXIST (File exists) [pid 5190] exit_group(0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5193 [pid 5190] <... exit_group resumed>) = ? [pid 5192] write(3, "1000", 4 [pid 5191] memfd_create("syzkaller", 0 [pid 5190] +++ exited with 0 +++ [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5192] <... write resumed>) = 4 [pid 5193] <... set_robust_list resumed>) = 0 [pid 5192] close(3 [pid 5059] <... openat resumed>) = 3 [pid 5193] chdir("./21" [pid 5192] <... close resumed>) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5190, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5193] <... chdir resumed>) = 0 [pid 5192] symlink("/dev/binderfs", "./binderfs" [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5193] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5056] <... restart_syscall resumed>) = 0 [pid 5192] <... symlink resumed>) = 0 [pid 5193] <... prctl resumed>) = 0 [pid 5193] setpgid(0, 0) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5191] <... memfd_create resumed>) = 5 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5193] <... openat resumed>) = 3 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5193] write(3, "1000", 4 [pid 5192] memfd_create("syzkaller", 0 [pid 5056] <... openat resumed>) = 3 [pid 5193] <... write resumed>) = 4 [pid 5056] newfstatat(3, "", [pid 5193] close(3 [pid 5191] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5193] <... close resumed>) = 0 [pid 5192] <... memfd_create resumed>) = 3 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5194 [pid 5192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5194 attached [pid 5193] symlink("/dev/binderfs", "./binderfs" [pid 5192] <... mmap resumed>) = 0x7f138d200000 [pid 5056] getdents64(3, [pid 5194] set_robust_list(0x555556c07660, 24 [pid 5193] <... symlink resumed>) = 0 [pid 5194] <... set_robust_list resumed>) = 0 [pid 5193] memfd_create("syzkaller", 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5194] chdir("./22" [pid 5193] <... memfd_create resumed>) = 3 [pid 5194] <... chdir resumed>) = 0 [pid 5193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5193] <... mmap resumed>) = 0x7f138d200000 [pid 5194] <... prctl resumed>) = 0 [pid 5193] 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"..., 524288 [pid 5191] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] <... umount2 resumed>) = 0 [pid 5194] setpgid(0, 0) = 0 [pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5194] write(3, "1000", 4 [pid 5192] 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"..., 524288 [pid 5194] <... write resumed>) = 4 [pid 5056] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5194] close(3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5194] <... close resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./19/bus", [pid 5194] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5194] memfd_create("syzkaller", 0 [pid 5056] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5194] <... memfd_create resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5194] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... openat resumed>) = 4 [pid 5056] newfstatat(4, "", [pid 5194] 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"..., 524288 [pid 5193] <... write resumed>) = 524288 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5192] <... write resumed>) = 524288 [pid 5191] <... write resumed>) = 524288 [pid 5056] rmdir("./19/bus" [pid 5192] munmap(0x7f138d200000, 138412032 [pid 5191] munmap(0x7f138d200000, 138412032 [pid 5056] <... rmdir resumed>) = 0 [pid 5191] <... munmap resumed>) = 0 [pid 5056] umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5192] <... munmap resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./19/binderfs", [pid 5191] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5194] <... write resumed>) = 524288 [pid 5192] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5191] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5193] munmap(0x7f138d200000, 138412032 [pid 5192] <... openat resumed>) = 4 [pid 5056] unlink("./19/binderfs" [pid 5193] <... munmap resumed>) = 0 [pid 5192] ioctl(4, LOOP_SET_FD, 3 [pid 5191] close(5 [pid 5056] <... unlink resumed>) = 0 [pid 5056] getdents64(3, [pid 5193] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5193] <... openat resumed>) = 4 [pid 5056] close(3 [pid 5193] ioctl(4, LOOP_SET_FD, 3 [pid 5192] <... ioctl resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5194] munmap(0x7f138d200000, 138412032 [pid 5191] <... close resumed>) = 0 [pid 5194] <... munmap resumed>) = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5191] creat("./file1", 000 [pid 5059] <... ioctl resumed>) = 0 [pid 5194] ioctl(4, LOOP_SET_FD, 3 [pid 5056] rmdir("./19" [pid 5059] close(3 [pid 5056] <... rmdir resumed>) = 0 [pid 5192] close(3 [pid 5059] <... close resumed>) = 0 [pid 5192] <... close resumed>) = 0 [pid 5191] <... creat resumed>) = 5 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] mkdir("./20", 0777) = 0 [pid 5191] exit_group(0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5195 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 5195 attached [pid 5192] close(4 [pid 5191] <... exit_group resumed>) = ? [pid 5056] <... openat resumed>) = 3 [pid 5193] <... ioctl resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5193] close(3 [pid 5192] <... close resumed>) = 0 [pid 5195] set_robust_list(0x555556c07660, 24 [pid 5193] <... close resumed>) = 0 [pid 5192] mkdir("./bus", 0777 [pid 5191] +++ exited with 0 +++ [pid 5195] <... set_robust_list resumed>) = 0 [pid 5193] close(4 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5195] chdir("./21" [pid 5193] <... close resumed>) = 0 [pid 5195] <... chdir resumed>) = 0 [pid 5194] <... ioctl resumed>) = 0 [pid 5193] mkdir("./bus", 0777 [pid 5192] <... mkdir resumed>) = 0 [pid 5195] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5192] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5195] <... prctl resumed>) = 0 [pid 5195] setpgid(0, 0) = 0 [pid 5193] <... mkdir resumed>) = 0 [pid 5195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5195] write(3, "1000", 4) = 4 [pid 5195] close(3) = 0 [pid 5195] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5195] memfd_create("syzkaller", 0) = 3 [pid 5195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5060] umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5194] close(3 [pid 5193] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5195] 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"..., 524288 [pid 5194] <... close resumed>) = 0 [pid 5194] close(4 [ 67.308610][ T5192] loop2: detected capacity change from 0 to 1024 [ 67.316723][ T5193] loop1: detected capacity change from 0 to 1024 [ 67.329039][ T5194] loop5: detected capacity change from 0 to 1024 [pid 5060] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5192] <... mount resumed>) = 0 [pid 5192] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] <... openat resumed>) = 3 [pid 5194] <... close resumed>) = 0 [pid 5192] <... openat resumed>) = 3 [pid 5194] mkdir("./bus", 0777 [pid 5192] chdir("./bus" [pid 5060] newfstatat(3, "", [pid 5192] <... chdir resumed>) = 0 [pid 5192] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5194] <... mkdir resumed>) = 0 [pid 5192] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5192] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, [pid 5194] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5192] <... symlink resumed>) = 0 [pid 5192] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5192] <... creat resumed>) = 4 [pid 5192] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5060] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5192] memfd_create("syzkaller", 0) = 5 [pid 5192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5195] <... write resumed>) = 524288 [pid 5194] <... mount resumed>) = 0 [pid 5193] <... mount resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5194] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5192] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./19/bus", [pid 5194] <... openat resumed>) = 3 [pid 5193] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5192] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] close(3 [pid 5194] chdir("./bus" [pid 5193] <... openat resumed>) = 3 [pid 5056] <... close resumed>) = 0 [pid 5194] <... chdir resumed>) = 0 [pid 5193] chdir("./bus" [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5194] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5193] <... chdir resumed>) = 0 [pid 5195] munmap(0x7f138d200000, 138412032 [pid 5194] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5193] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5195] <... munmap resumed>) = 0 [pid 5194] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5193] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5195] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5193] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... openat resumed>) = 4 ./strace-static-x86_64: Process 5196 attached [pid 5195] <... openat resumed>) = 4 [pid 5060] newfstatat(4, "", [pid 5196] set_robust_list(0x555556c07660, 24 [pid 5195] ioctl(4, LOOP_SET_FD, 3 [pid 5194] <... symlink resumed>) = 0 [pid 5193] <... symlink resumed>) = 0 [pid 5192] <... write resumed>) = 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5196 [pid 5060] getdents64(4, [pid 5196] <... set_robust_list resumed>) = 0 [pid 5194] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5193] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4) = 0 [pid 5060] rmdir("./19/bus") = 0 [pid 5060] umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./19/binderfs" [pid 5196] chdir("./20" [pid 5060] <... unlink resumed>) = 0 [pid 5192] munmap(0x7f138d200000, 138412032 [pid 5196] <... chdir resumed>) = 0 [pid 5196] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5194] <... creat resumed>) = 4 [pid 5193] <... creat resumed>) = 4 [pid 5192] <... munmap resumed>) = 0 [pid 5060] getdents64(3, [pid 5196] <... prctl resumed>) = 0 [pid 5194] rename("./bus", "./file2" [pid 5193] rename("./bus", "./file2" [pid 5196] setpgid(0, 0 [pid 5192] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5196] <... setpgid resumed>) = 0 [pid 5192] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5194] <... rename resumed>) = -1 EEXIST (File exists) [pid 5192] close(5 [pid 5060] close(3 [pid 5196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5195] <... ioctl resumed>) = 0 [pid 5194] memfd_create("syzkaller", 0 [pid 5193] <... rename resumed>) = -1 EEXIST (File exists) [pid 5196] <... openat resumed>) = 3 [pid 5195] close(3 [pid 5194] <... memfd_create resumed>) = 5 [pid 5193] memfd_create("syzkaller", 0 [pid 5060] <... close resumed>) = 0 [pid 5193] <... memfd_create resumed>) = 5 [pid 5193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5193] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5196] write(3, "1000", 4 [pid 5194] <... mmap resumed>) = 0x7f138d200000 [pid 5196] <... write resumed>) = 4 [pid 5195] <... close resumed>) = 0 [pid 5192] <... close resumed>) = 0 [pid 5196] close(3 [pid 5195] close(4 [pid 5192] creat("./file1", 000 [pid 5060] rmdir("./19" [pid 5196] <... close resumed>) = 0 [pid 5195] <... close resumed>) = 0 [pid 5196] symlink("/dev/binderfs", "./binderfs" [pid 5195] mkdir("./bus", 0777 [pid 5196] <... symlink resumed>) = 0 [pid 5195] <... mkdir resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5196] memfd_create("syzkaller", 0 [pid 5195] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [ 67.438485][ T5195] loop3: detected capacity change from 0 to 1024 [pid 5194] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5196] <... memfd_create resumed>) = 3 [pid 5060] mkdir("./20", 0777 [pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5193] <... write resumed>) = 524288 [pid 5192] <... creat resumed>) = 5 [pid 5060] <... mkdir resumed>) = 0 [pid 5196] <... mmap resumed>) = 0x7f138d200000 [pid 5192] exit_group(0 [pid 5196] 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"..., 524288 [pid 5192] <... exit_group resumed>) = ? [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5195] <... mount resumed>) = 0 [pid 5194] <... write resumed>) = 524288 [pid 5192] +++ exited with 0 +++ [pid 5060] <... openat resumed>) = 3 [pid 5195] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5192, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5195] <... openat resumed>) = 3 [pid 5195] chdir("./bus") = 0 [pid 5195] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5194] munmap(0x7f138d200000, 138412032 [pid 5058] umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5195] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5194] <... munmap resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5195] <... symlink resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", [pid 5194] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5193] munmap(0x7f138d200000, 138412032 [pid 5195] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5194] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5193] <... munmap resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5193] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] getdents64(3, [pid 5196] <... write resumed>) = 524288 [pid 5194] close(5 [pid 5193] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5194] <... close resumed>) = 0 [pid 5193] close(5 [pid 5058] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5196] munmap(0x7f138d200000, 138412032 [pid 5195] <... creat resumed>) = 4 [pid 5194] creat("./file1", 000 [pid 5193] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5196] <... munmap resumed>) = 0 [pid 5195] rename("./bus", "./file2" [pid 5193] creat("./file1", 000 [pid 5058] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5195] <... rename resumed>) = -1 EEXIST (File exists) [pid 5194] <... creat resumed>) = 5 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5196] <... openat resumed>) = 4 [pid 5195] memfd_create("syzkaller", 0 [pid 5058] newfstatat(AT_FDCWD, "./20/bus", [pid 5194] exit_group(0 [pid 5196] ioctl(4, LOOP_SET_FD, 3 [pid 5195] <... memfd_create resumed>) = 5 [pid 5194] <... exit_group resumed>) = ? [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5194] +++ exited with 0 +++ [pid 5193] <... creat resumed>) = 5 [pid 5193] exit_group(0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5193] <... exit_group resumed>) = ? [pid 5061] umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5196] <... ioctl resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5196] close(3 [pid 5195] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... openat resumed>) = 3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5196] <... close resumed>) = 0 [pid 5061] newfstatat(3, "", [pid 5058] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... openat resumed>) = 4 [pid 5061] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(4, "", [pid 5196] close(4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5196] <... close resumed>) = 0 [pid 5195] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5193] +++ exited with 0 +++ [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5196] mkdir("./bus", 0777 [pid 5058] getdents64(4, [pid 5196] <... mkdir resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5193, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5058] close(4) = 0 [pid 5196] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] rmdir("./20/bus" [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(AT_FDCWD, "./20/binderfs", [pid 5060] close(3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5060] <... close resumed>) = 0 [pid 5058] unlink("./20/binderfs" [pid 5057] newfstatat(3, "", [pid 5195] <... write resumed>) = 524288 [pid 5061] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... unlink resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] getdents64(3, [pid 5058] close(3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... close resumed>) = 0 [pid 5057] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] rmdir("./20") = 0 [pid 5058] mkdir("./21", 0777) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./22/bus", [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5195] munmap(0x7f138d200000, 138412032 [pid 5196] <... mount resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5196] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5061] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 5197 attached [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5197 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5197] set_robust_list(0x555556c07660, 24 [pid 5196] chdir("./bus" [pid 5195] <... munmap resumed>) = 0 [pid 5197] <... set_robust_list resumed>) = 0 [pid 5196] <... chdir resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5197] chdir("./20" [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5195] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... openat resumed>) = 4 [pid 5057] newfstatat(AT_FDCWD, "./21/bus", [pid 5197] <... chdir resumed>) = 0 [pid 5196] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5195] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] newfstatat(4, "", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 67.552930][ T5196] loop0: detected capacity change from 0 to 1024 [pid 5197] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5196] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5195] close(5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5197] <... prctl resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] getdents64(4, [pid 5057] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5197] setpgid(0, 0 [pid 5195] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... openat resumed>) = 4 [pid 5197] <... setpgid resumed>) = 0 [pid 5061] getdents64(4, [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5196] <... symlink resumed>) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, [pid 5197] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5197] write(3, "1000", 4 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5197] <... write resumed>) = 4 [pid 5196] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] close(4 [pid 5057] <... close resumed>) = 0 [pid 5197] close(3 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] rmdir("./21/bus" [pid 5197] <... close resumed>) = 0 [pid 5197] symlink("/dev/binderfs", "./binderfs" [pid 5195] creat("./file1", 000 [pid 5057] <... rmdir resumed>) = 0 [pid 5197] <... symlink resumed>) = 0 [pid 5196] <... creat resumed>) = 4 [pid 5057] umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5197] memfd_create("syzkaller", 0 [pid 5196] rename("./bus", "./file2" [pid 5195] <... creat resumed>) = 5 [pid 5061] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5196] <... rename resumed>) = -1 EEXIST (File exists) [pid 5195] exit_group(0 [pid 5061] rmdir("./22/bus" [pid 5057] newfstatat(AT_FDCWD, "./21/binderfs", [pid 5196] memfd_create("syzkaller", 0 [pid 5195] <... exit_group resumed>) = ? [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5197] <... memfd_create resumed>) = 3 [pid 5196] <... memfd_create resumed>) = 5 [pid 5195] +++ exited with 0 +++ [pid 5061] <... rmdir resumed>) = 0 [pid 5058] close(3 [pid 5057] unlink("./21/binderfs" [pid 5197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5195, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5058] <... close resumed>) = 0 [pid 5196] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... unlink resumed>) = 0 [pid 5197] <... mmap resumed>) = 0x7f138d200000 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] getdents64(3, [pid 5197] 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"..., 524288 [pid 5061] umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 5198 attached [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5198] set_robust_list(0x555556c07660, 24 [pid 5059] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] close(3 [pid 5198] <... set_robust_list resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5198 [pid 5198] chdir("./21") = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5196] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5198] setpgid(0, 0) = 0 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] <... close resumed>) = 0 [pid 5198] write(3, "1000", 4 [pid 5059] <... openat resumed>) = 3 [pid 5057] rmdir("./21" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5198] <... write resumed>) = 4 [pid 5198] close(3) = 0 [pid 5198] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5198] memfd_create("syzkaller", 0) = 3 [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5198] 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"..., 524288 [pid 5196] <... write resumed>) = 524288 [pid 5061] newfstatat(AT_FDCWD, "./22/binderfs", [pid 5059] newfstatat(3, "", [pid 5057] <... rmdir resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5197] <... write resumed>) = 524288 [pid 5061] unlink("./22/binderfs" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] mkdir("./22", 0777 [pid 5196] munmap(0x7f138d200000, 138412032 [pid 5057] <... mkdir resumed>) = 0 [pid 5059] getdents64(3, [pid 5196] <... munmap resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5198] <... write resumed>) = 524288 [pid 5059] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... openat resumed>) = 3 [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5196] close(5 [pid 5197] munmap(0x7f138d200000, 138412032 [pid 5196] <... close resumed>) = 0 [pid 5061] getdents64(3, [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5197] <... munmap resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5061] rmdir("./22") = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] mkdir("./23", 0777 [pid 5198] munmap(0x7f138d200000, 138412032 [pid 5061] <... mkdir resumed>) = 0 [pid 5198] <... munmap resumed>) = 0 [pid 5197] <... openat resumed>) = 4 [pid 5196] creat("./file1", 000 [pid 5059] <... umount2 resumed>) = 0 [pid 5197] ioctl(4, LOOP_SET_FD, 3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5198] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5198] ioctl(4, LOOP_SET_FD, 3 [pid 5197] <... ioctl resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5197] close(3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5197] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./21/bus", [pid 5197] close(4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... ioctl resumed>) = 0 [pid 5197] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(3 [pid 5197] mkdir("./bus", 0777 [pid 5059] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... close resumed>) = 0 [pid 5198] <... ioctl resumed>) = 0 [pid 5197] <... mkdir resumed>) = 0 [pid 5196] <... creat resumed>) = 5 [pid 5059] <... openat resumed>) = 4 [pid 5198] close(3 [pid 5196] exit_group(0 [pid 5059] newfstatat(4, "", [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5196] <... exit_group resumed>) = ? [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 5199 attached [pid 5198] <... close resumed>) = 0 [pid 5196] +++ exited with 0 +++ [pid 5199] set_robust_list(0x555556c07660, 24 [pid 5198] close(4 [pid 5197] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] getdents64(4, [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5196, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5199] <... set_robust_list resumed>) = 0 [pid 5198] <... close resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5199 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5199] chdir("./22" [pid 5198] mkdir("./bus", 0777 [pid 5199] <... chdir resumed>) = 0 [pid 5059] getdents64(4, [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5199] <... prctl resumed>) = 0 [pid 5059] close(4 [pid 5199] setpgid(0, 0 [pid 5198] <... mkdir resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5199] <... setpgid resumed>) = 0 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5056] umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5199] <... openat resumed>) = 3 [pid 5056] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5199] write(3, "1000", 4 [pid 5059] rmdir("./21/bus" [pid 5056] <... openat resumed>) = 3 [pid 5059] <... rmdir resumed>) = 0 [pid 5199] <... write resumed>) = 4 [pid 5056] newfstatat(3, "", [pid 5198] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5199] close(3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5199] <... close resumed>) = 0 [pid 5059] umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5199] symlink("/dev/binderfs", "./binderfs" [pid 5056] getdents64(3, [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5198] <... mount resumed>) = 0 [pid 5197] <... mount resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./21/binderfs", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5199] <... symlink resumed>) = 0 [pid 5198] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5197] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5198] <... openat resumed>) = 3 [pid 5197] <... openat resumed>) = 3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5199] memfd_create("syzkaller", 0 [pid 5198] chdir("./bus" [pid 5197] chdir("./bus" [pid 5199] <... memfd_create resumed>) = 3 [pid 5198] <... chdir resumed>) = 0 [pid 5197] <... chdir resumed>) = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5197] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5198] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5197] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5197] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5198] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... ioctl resumed>) = 0 [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [ 67.720978][ T5197] loop4: detected capacity change from 0 to 1024 [ 67.724308][ T5198] loop2: detected capacity change from 0 to 1024 [pid 5059] unlink("./21/binderfs" [pid 5198] <... symlink resumed>) = 0 [pid 5198] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5199] 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"..., 524288 [pid 5059] <... unlink resumed>) = 0 [pid 5059] getdents64(3, [pid 5197] <... symlink resumed>) = 0 [pid 5061] close(3 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5059] close(3 [pid 5061] <... close resumed>) = 0 [pid 5198] <... creat resumed>) = 4 [pid 5197] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./21" [pid 5198] rename("./bus", "./file2" [pid 5197] <... creat resumed>) = 4 [pid 5059] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5200 attached [pid 5197] rename("./bus", "./file2" [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5200 [pid 5059] mkdir("./22", 0777 [pid 5198] <... rename resumed>) = -1 EEXIST (File exists) [pid 5198] memfd_create("syzkaller", 0 [pid 5197] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... mkdir resumed>) = 0 [pid 5056] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5200] set_robust_list(0x555556c07660, 24 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5200] <... set_robust_list resumed>) = 0 [pid 5200] chdir("./23" [pid 5198] <... memfd_create resumed>) = 5 [pid 5197] memfd_create("syzkaller", 0 [pid 5059] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5200] <... chdir resumed>) = 0 [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5197] <... memfd_create resumed>) = 5 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] newfstatat(AT_FDCWD, "./20/bus", [pid 5200] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5198] <... mmap resumed>) = 0x7f138d200000 [pid 5197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5200] <... prctl resumed>) = 0 [pid 5199] <... write resumed>) = 524288 [pid 5200] setpgid(0, 0) = 0 [pid 5197] <... mmap resumed>) = 0x7f138d200000 [pid 5056] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5199] munmap(0x7f138d200000, 138412032 [pid 5197] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5199] <... munmap resumed>) = 0 [pid 5198] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5200] <... openat resumed>) = 3 [pid 5199] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5200] write(3, "1000", 4 [pid 5199] <... openat resumed>) = 4 [pid 5200] <... write resumed>) = 4 [pid 5199] ioctl(4, LOOP_SET_FD, 3 [pid 5200] close(3 [pid 5056] <... openat resumed>) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./20/bus") = 0 [pid 5056] umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5197] <... write resumed>) = 524288 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5200] <... close resumed>) = 0 [pid 5200] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5198] <... write resumed>) = 524288 [pid 5056] newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./20/binderfs") = 0 [pid 5056] getdents64(3, [pid 5200] memfd_create("syzkaller", 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./20" [pid 5197] munmap(0x7f138d200000, 138412032 [pid 5056] <... rmdir resumed>) = 0 [pid 5199] <... ioctl resumed>) = 0 [pid 5197] <... munmap resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] mkdir("./21", 0777 [pid 5200] <... memfd_create resumed>) = 3 [pid 5199] close(3 [pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5199] <... close resumed>) = 0 [pid 5059] close(3 [pid 5199] close(4 [pid 5200] <... mmap resumed>) = 0x7f138d200000 [pid 5199] <... close resumed>) = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... close resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5198] munmap(0x7f138d200000, 138412032 [pid 5197] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5199] mkdir("./bus", 0777 [pid 5198] <... munmap resumed>) = 0 [pid 5197] close(5 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... openat resumed>) = 3 [pid 5200] 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"..., 524288 [pid 5197] <... close resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5199] <... mkdir resumed>) = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5199] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5198] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5198] close(5) = 0 [pid 5197] creat("./file1", 000./strace-static-x86_64: Process 5201 attached [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5201 [ 67.817015][ T5199] loop1: detected capacity change from 0 to 1024 [pid 5201] set_robust_list(0x555556c07660, 24 [pid 5199] <... mount resumed>) = 0 [pid 5197] <... creat resumed>) = 5 [pid 5198] creat("./file1", 000 [pid 5197] exit_group(0 [pid 5200] <... write resumed>) = 524288 [pid 5201] <... set_robust_list resumed>) = 0 [pid 5199] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5200] munmap(0x7f138d200000, 138412032 [pid 5201] chdir("./22" [pid 5197] <... exit_group resumed>) = ? [pid 5201] <... chdir resumed>) = 0 [pid 5200] <... munmap resumed>) = 0 [pid 5199] <... openat resumed>) = 3 [pid 5197] +++ exited with 0 +++ [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5200] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5199] chdir("./bus" [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5197, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5201] <... prctl resumed>) = 0 [pid 5199] <... chdir resumed>) = 0 [pid 5201] setpgid(0, 0 [pid 5200] <... openat resumed>) = 4 [pid 5199] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5198] <... creat resumed>) = 5 [pid 5201] <... setpgid resumed>) = 0 [pid 5200] ioctl(4, LOOP_SET_FD, 3 [pid 5060] umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5200] <... ioctl resumed>) = 0 [pid 5199] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5201] <... openat resumed>) = 3 [pid 5200] close(3 [pid 5199] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5198] exit_group(0 [pid 5060] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5201] write(3, "1000", 4 [pid 5200] <... close resumed>) = 0 [pid 5201] <... write resumed>) = 4 [pid 5200] close(4 [pid 5198] <... exit_group resumed>) = ? [pid 5060] <... openat resumed>) = 3 [pid 5056] <... ioctl resumed>) = 0 [pid 5200] <... close resumed>) = 0 [pid 5199] <... symlink resumed>) = 0 [pid 5201] close(3 [pid 5060] newfstatat(3, "", [pid 5201] <... close resumed>) = 0 [pid 5201] symlink("/dev/binderfs", "./binderfs" [pid 5200] mkdir("./bus", 0777 [pid 5199] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, [pid 5201] <... symlink resumed>) = 0 [pid 5201] memfd_create("syzkaller", 0 [pid 5198] +++ exited with 0 +++ [pid 5056] close(3 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5201] <... memfd_create resumed>) = 3 [pid 5060] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5201] <... mmap resumed>) = 0x7f138d200000 [pid 5200] <... mkdir resumed>) = 0 [pid 5200] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5202 attached [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5202 [pid 5202] set_robust_list(0x555556c07660, 24) = 0 [pid 5202] chdir("./21" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5202] <... chdir resumed>) = 0 [pid 5202] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5199] <... creat resumed>) = 4 [pid 5058] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5202] <... prctl resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5202] setpgid(0, 0 [pid 5058] newfstatat(3, "", [pid 5202] <... setpgid resumed>) = 0 [pid 5199] rename("./bus", "./file2" [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 67.886737][ T5200] loop5: detected capacity change from 0 to 1024 [pid 5058] getdents64(3, [pid 5202] <... openat resumed>) = 3 [pid 5201] 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"..., 524288 [pid 5199] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5201] <... write resumed>) = 524288 [pid 5199] memfd_create("syzkaller", 0 [pid 5058] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5201] munmap(0x7f138d200000, 138412032 [pid 5199] <... memfd_create resumed>) = 5 [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5202] write(3, "1000", 4) = 4 [pid 5202] close(3) = 0 [pid 5202] symlink("/dev/binderfs", "./binderfs" [pid 5200] <... mount resumed>) = 0 [pid 5202] <... symlink resumed>) = 0 [pid 5200] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5202] memfd_create("syzkaller", 0) = 3 [pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5202] 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"..., 524288 [pid 5200] <... openat resumed>) = 3 [pid 5060] <... umount2 resumed>) = 0 [pid 5200] chdir("./bus" [pid 5201] <... munmap resumed>) = 0 [pid 5200] <... chdir resumed>) = 0 [pid 5199] <... mmap resumed>) = 0x7f138d200000 [pid 5199] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5200] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5201] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5200] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5200] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5201] <... openat resumed>) = 4 [pid 5201] ioctl(4, LOOP_SET_FD, 3 [pid 5202] <... write resumed>) = 524288 [pid 5201] <... ioctl resumed>) = 0 [pid 5200] <... symlink resumed>) = 0 [pid 5060] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = 0 [pid 5202] munmap(0x7f138d200000, 138412032) = 0 [pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5201] close(3 [pid 5200] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5202] ioctl(4, LOOP_SET_FD, 3 [pid 5201] <... close resumed>) = 0 [pid 5199] <... write resumed>) = 524288 [pid 5060] newfstatat(AT_FDCWD, "./20/bus", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 67.988979][ T5201] loop3: detected capacity change from 0 to 1024 [pid 5201] close(4 [pid 5200] <... creat resumed>) = 4 [pid 5058] newfstatat(AT_FDCWD, "./21/bus", [pid 5201] <... close resumed>) = 0 [pid 5200] rename("./bus", "./file2" [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5201] mkdir("./bus", 0777 [pid 5058] newfstatat(4, "", [pid 5201] <... mkdir resumed>) = 0 [pid 5060] umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5201] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5199] munmap(0x7f138d200000, 138412032 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(4, [pid 5200] <... rename resumed>) = -1 EEXIST (File exists) [pid 5199] <... munmap resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5200] memfd_create("syzkaller", 0 [pid 5060] <... openat resumed>) = 4 [pid 5058] getdents64(4, [pid 5199] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5200] <... memfd_create resumed>) = 5 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5199] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] newfstatat(4, "", [pid 5058] close(4 [pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5199] close(5 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... close resumed>) = 0 [pid 5200] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] getdents64(4, [pid 5058] rmdir("./21/bus" [pid 5199] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... rmdir resumed>) = 0 [pid 5060] getdents64(4, [pid 5058] umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5202] <... ioctl resumed>) = 0 [pid 5060] close(4 [pid 5058] newfstatat(AT_FDCWD, "./21/binderfs", [pid 5202] close(3 [pid 5060] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5202] <... close resumed>) = 0 [pid 5060] rmdir("./20/bus" [pid 5058] unlink("./21/binderfs" [pid 5202] close(4 [pid 5060] <... rmdir resumed>) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5202] <... close resumed>) = 0 [pid 5060] umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(3, [pid 5202] mkdir("./bus", 0777 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5202] <... mkdir resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./20/binderfs", [pid 5058] close(3 [pid 5200] <... write resumed>) = 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... close resumed>) = 0 [pid 5202] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] unlink("./20/binderfs" [pid 5058] rmdir("./21" [pid 5201] <... mount resumed>) = 0 [pid 5199] creat("./file1", 000 [pid 5060] <... unlink resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5201] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5201] chdir("./bus") = 0 [pid 5201] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5060] getdents64(3, [pid 5201] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3 [pid 5201] <... symlink resumed>) = 0 [pid 5058] mkdir("./22", 0777 [pid 5202] <... mount resumed>) = 0 [pid 5201] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... close resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5202] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] rmdir("./20" [pid 5202] <... openat resumed>) = 3 [pid 5202] chdir("./bus" [pid 5060] <... rmdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5202] <... chdir resumed>) = 0 [pid 5201] <... creat resumed>) = 4 [pid 5058] <... openat resumed>) = 3 [pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5201] rename("./bus", "./file2" [pid 5200] munmap(0x7f138d200000, 138412032 [pid 5199] <... creat resumed>) = 5 [pid 5060] mkdir("./21", 0777 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5202] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5201] <... rename resumed>) = -1 EEXIST (File exists) [pid 5200] <... munmap resumed>) = 0 [ 68.031832][ T5202] loop0: detected capacity change from 0 to 1024 [pid 5202] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5201] memfd_create("syzkaller", 0) = 5 [pid 5200] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... mkdir resumed>) = 0 [pid 5202] <... symlink resumed>) = 0 [pid 5202] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5199] exit_group(0 [pid 5200] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5200] close(5 [pid 5199] <... exit_group resumed>) = ? [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5199] +++ exited with 0 +++ [pid 5060] <... openat resumed>) = 3 [pid 5201] <... mmap resumed>) = 0x7f138d200000 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5199, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5202] <... creat resumed>) = 4 [pid 5201] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5202] rename("./bus", "./file2" [pid 5200] <... close resumed>) = 0 [pid 5057] umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5202] <... rename resumed>) = -1 EEXIST (File exists) [pid 5057] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5202] memfd_create("syzkaller", 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", [pid 5202] <... memfd_create resumed>) = 5 [pid 5200] creat("./file1", 000 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] getdents64(3, [pid 5202] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5202] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5200] <... creat resumed>) = 5 [pid 5200] exit_group(0) = ? [pid 5200] +++ exited with 0 +++ [pid 5201] <... write resumed>) = 524288 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5200, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5058] <... ioctl resumed>) = 0 [pid 5061] umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5202] <... write resumed>) = 524288 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(3, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] newfstatat(AT_FDCWD, "./22/bus", [pid 5061] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... close resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... openat resumed>) = 4 [pid 5202] munmap(0x7f138d200000, 138412032) = 0 [pid 5201] munmap(0x7f138d200000, 138412032 [pid 5060] <... ioctl resumed>) = 0 [pid 5057] newfstatat(4, "", [pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5201] <... munmap resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5202] close(5./strace-static-x86_64: Process 5203 attached [pid 5201] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] getdents64(4, [pid 5203] set_robust_list(0x555556c07660, 24 [pid 5201] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5203 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5203] <... set_robust_list resumed>) = 0 [pid 5201] close(5 [pid 5203] chdir("./22" [pid 5201] <... close resumed>) = 0 [pid 5057] getdents64(4, [pid 5203] <... chdir resumed>) = 0 [pid 5203] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5202] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] close(3 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./22/bus") = 0 [pid 5201] creat("./file1", 000 [pid 5061] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5203] <... prctl resumed>) = 0 [pid 5203] setpgid(0, 0 [pid 5057] umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5204 attached [pid 5203] <... setpgid resumed>) = 0 [pid 5202] creat("./file1", 000 [pid 5061] newfstatat(AT_FDCWD, "./23/bus", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5204] set_robust_list(0x555556c07660, 24 [pid 5057] newfstatat(AT_FDCWD, "./22/binderfs", [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5204] <... set_robust_list resumed>) = 0 [pid 5061] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5204] chdir("./21" [pid 5203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5201] <... creat resumed>) = 5 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5204 [pid 5202] <... creat resumed>) = 5 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5204] <... chdir resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5203] <... openat resumed>) = 3 [pid 5201] exit_group(0 [pid 5061] <... openat resumed>) = 4 [pid 5057] unlink("./22/binderfs" [pid 5202] exit_group(0 [pid 5061] newfstatat(4, "", [pid 5204] setpgid(0, 0 [pid 5202] <... exit_group resumed>) = ? [pid 5204] <... setpgid resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5203] write(3, "1000", 4 [pid 5202] +++ exited with 0 +++ [pid 5201] <... exit_group resumed>) = ? [pid 5057] <... unlink resumed>) = 0 [pid 5204] <... openat resumed>) = 3 [pid 5203] <... write resumed>) = 4 [pid 5201] +++ exited with 0 +++ [pid 5061] getdents64(4, [pid 5057] getdents64(3, [pid 5204] write(3, "1000", 4 [pid 5203] close(3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5202, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5204] <... write resumed>) = 4 [pid 5203] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5201, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5057] close(3 [pid 5204] close(3 [pid 5203] symlink("/dev/binderfs", "./binderfs" [pid 5061] getdents64(4, [pid 5059] umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5204] <... close resumed>) = 0 [pid 5203] <... symlink resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] rmdir("./22" [pid 5204] symlink("/dev/binderfs", "./binderfs" [pid 5203] memfd_create("syzkaller", 0 [pid 5061] close(4 [pid 5059] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... rmdir resumed>) = 0 [pid 5056] umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5204] <... symlink resumed>) = 0 [pid 5203] <... memfd_create resumed>) = 3 [pid 5061] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5057] mkdir("./23", 0777 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5204] memfd_create("syzkaller", 0 [pid 5203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] rmdir("./23/bus" [pid 5059] newfstatat(3, "", [pid 5057] <... mkdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5204] <... memfd_create resumed>) = 3 [pid 5203] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5203] 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"..., 524288 [pid 5061] <... rmdir resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5204] <... mmap resumed>) = 0x7f138d200000 [pid 5061] umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5204] 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"..., 524288 [pid 5203] <... write resumed>) = 524288 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(3, [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] newfstatat(3, "", [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5059] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(3, [pid 5203] munmap(0x7f138d200000, 138412032 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] newfstatat(AT_FDCWD, "./23/binderfs", [pid 5056] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./23/binderfs" [pid 5203] <... munmap resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5203] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5204] <... write resumed>) = 524288 [pid 5203] <... openat resumed>) = 4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] getdents64(3, [pid 5204] munmap(0x7f138d200000, 138412032 [pid 5203] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] newfstatat(AT_FDCWD, "./22/bus", [pid 5056] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5204] <... munmap resumed>) = 0 [pid 5061] close(3) = 0 [pid 5061] rmdir("./23" [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5204] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] <... rmdir resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./21/bus", [pid 5204] <... openat resumed>) = 4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5204] ioctl(4, LOOP_SET_FD, 3 [pid 5061] mkdir("./24", 0777 [pid 5056] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5203] <... ioctl resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5203] close(3 [pid 5059] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5203] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5203] close(4 [pid 5059] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5203] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5204] <... ioctl resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] newfstatat(4, "", [pid 5056] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5204] close(3 [pid 5061] <... openat resumed>) = 3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5204] <... close resumed>) = 0 [pid 5203] mkdir("./bus", 0777 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] getdents64(4, [pid 5056] <... openat resumed>) = 4 [pid 5204] close(4 [pid 5203] <... mkdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] newfstatat(4, "", [pid 5204] <... close resumed>) = 0 [pid 5203] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5204] mkdir("./bus", 0777 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(4, [pid 5204] <... mkdir resumed>) = 0 [pid 5059] close(4 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5204] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] <... close resumed>) = 0 [pid 5056] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4 [pid 5059] rmdir("./22/bus" [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./21/bus" [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5203] <... mount resumed>) = 0 [pid 5059] umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5203] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5203] chdir("./bus" [pid 5059] newfstatat(AT_FDCWD, "./22/binderfs", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5203] <... chdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5203] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] unlink("./22/binderfs" [pid 5056] newfstatat(AT_FDCWD, "./21/binderfs", [pid 5203] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5203] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... unlink resumed>) = 0 [pid 5056] unlink("./21/binderfs" [pid 5204] <... mount resumed>) = 0 [pid 5059] getdents64(3, [pid 5056] <... unlink resumed>) = 0 [pid 5204] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5203] <... symlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5203] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] close(3 [pid 5204] <... openat resumed>) = 3 [pid 5059] <... close resumed>) = 0 [pid 5056] getdents64(3, [pid 5204] chdir("./bus" [pid 5059] rmdir("./22" [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5204] <... chdir resumed>) = 0 [pid 5056] close(3 [pid 5204] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] <... close resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5059] mkdir("./23", 0777 [pid 5204] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5203] <... creat resumed>) = 4 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] rmdir("./21" [pid 5204] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5203] rename("./bus", "./file2" [pid 5059] <... mkdir resumed>) = 0 [pid 5057] close(3 [pid 5056] <... rmdir resumed>) = 0 [pid 5203] <... rename resumed>) = -1 EEXIST (File exists) [ 68.269090][ T5203] loop2: detected capacity change from 0 to 1024 [ 68.274351][ T5204] loop4: detected capacity change from 0 to 1024 [pid 5203] memfd_create("syzkaller", 0 [pid 5057] <... close resumed>) = 0 [pid 5056] mkdir("./22", 0777 [pid 5204] <... symlink resumed>) = 0 [pid 5203] <... memfd_create resumed>) = 5 [pid 5061] <... ioctl resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... mkdir resumed>) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5205 attached [pid 5203] <... mmap resumed>) = 0x7f138d200000 [pid 5204] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] close(3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5205] set_robust_list(0x555556c07660, 24 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5205] <... set_robust_list resumed>) = 0 [pid 5203] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5205] chdir("./23" [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5205 [pid 5056] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5206 attached [pid 5205] <... chdir resumed>) = 0 [pid 5204] <... creat resumed>) = 4 [pid 5206] set_robust_list(0x555556c07660, 24 [pid 5205] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5204] rename("./bus", "./file2" [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5206 [pid 5206] <... set_robust_list resumed>) = 0 [pid 5205] <... prctl resumed>) = 0 [pid 5205] setpgid(0, 0 [pid 5206] chdir("./24" [pid 5205] <... setpgid resumed>) = 0 [pid 5206] <... chdir resumed>) = 0 [pid 5205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5204] <... rename resumed>) = -1 EEXIST (File exists) [pid 5206] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5205] <... openat resumed>) = 3 [pid 5204] memfd_create("syzkaller", 0 [pid 5206] <... prctl resumed>) = 0 [pid 5205] write(3, "1000", 4 [pid 5204] <... memfd_create resumed>) = 5 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5203] <... write resumed>) = 524288 [pid 5204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5205] <... write resumed>) = 4 [pid 5206] setpgid(0, 0 [pid 5205] close(3 [pid 5206] <... setpgid resumed>) = 0 [pid 5205] <... close resumed>) = 0 [pid 5203] munmap(0x7f138d200000, 138412032 [pid 5205] symlink("/dev/binderfs", "./binderfs" [pid 5206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5205] <... symlink resumed>) = 0 [pid 5204] <... mmap resumed>) = 0x7f138d200000 [pid 5205] memfd_create("syzkaller", 0 [pid 5206] <... openat resumed>) = 3 [pid 5203] <... munmap resumed>) = 0 [pid 5206] write(3, "1000", 4 [pid 5203] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5206] <... write resumed>) = 4 [pid 5205] <... memfd_create resumed>) = 3 [pid 5205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5206] close(3 [pid 5056] close(3 [pid 5206] <... close resumed>) = 0 [pid 5205] <... mmap resumed>) = 0x7f138d200000 [pid 5203] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] close(3 [pid 5056] <... close resumed>) = 0 [pid 5206] symlink("/dev/binderfs", "./binderfs" [pid 5203] close(5 [pid 5059] <... close resumed>) = 0 [pid 5206] <... symlink resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5207 attached [pid 5206] memfd_create("syzkaller", 0 [pid 5204] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5203] <... close resumed>) = 0 ./strace-static-x86_64: Process 5208 attached [pid 5207] set_robust_list(0x555556c07660, 24 [pid 5206] <... memfd_create resumed>) = 3 [pid 5204] <... write resumed>) = 524288 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5208 [pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5207] <... set_robust_list resumed>) = 0 [pid 5208] set_robust_list(0x555556c07660, 24 [pid 5207] chdir("./23" [pid 5206] <... mmap resumed>) = 0x7f138d200000 [pid 5205] 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"..., 524288 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5207 [pid 5208] <... set_robust_list resumed>) = 0 [pid 5207] <... chdir resumed>) = 0 [pid 5208] chdir("./22") = 0 [pid 5208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5208] setpgid(0, 0) = 0 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5206] 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"..., 524288 [pid 5203] creat("./file1", 000 [pid 5208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5207] <... prctl resumed>) = 0 [pid 5208] <... openat resumed>) = 3 [pid 5208] write(3, "1000", 4 [pid 5207] setpgid(0, 0 [pid 5208] <... write resumed>) = 4 [pid 5207] <... setpgid resumed>) = 0 [pid 5204] munmap(0x7f138d200000, 138412032 [pid 5208] close(3 [pid 5207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5204] <... munmap resumed>) = 0 [pid 5208] <... close resumed>) = 0 [pid 5204] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5208] symlink("/dev/binderfs", "./binderfs" [pid 5207] <... openat resumed>) = 3 [pid 5204] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5208] <... symlink resumed>) = 0 [pid 5207] write(3, "1000", 4 [pid 5204] close(5 [pid 5208] memfd_create("syzkaller", 0 [pid 5207] <... write resumed>) = 4 [pid 5205] <... write resumed>) = 524288 [pid 5204] <... close resumed>) = 0 [pid 5203] <... creat resumed>) = 5 [pid 5207] close(3) = 0 [pid 5203] exit_group(0 [pid 5207] symlink("/dev/binderfs", "./binderfs" [pid 5208] <... memfd_create resumed>) = 3 [pid 5207] <... symlink resumed>) = 0 [pid 5208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5208] 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"..., 524288 [pid 5207] memfd_create("syzkaller", 0 [pid 5206] <... write resumed>) = 524288 [pid 5207] <... memfd_create resumed>) = 3 [pid 5207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5205] munmap(0x7f138d200000, 138412032 [pid 5207] 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"..., 524288 [pid 5205] <... munmap resumed>) = 0 [pid 5203] <... exit_group resumed>) = ? [pid 5208] <... write resumed>) = 524288 [pid 5204] creat("./file1", 000 [pid 5203] +++ exited with 0 +++ [pid 5205] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5203, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5058] umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5206] munmap(0x7f138d200000, 138412032 [pid 5205] <... openat resumed>) = 4 [pid 5204] <... creat resumed>) = 5 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5206] <... munmap resumed>) = 0 [pid 5205] ioctl(4, LOOP_SET_FD, 3 [pid 5204] exit_group(0 [pid 5058] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5204] <... exit_group resumed>) = ? [pid 5208] munmap(0x7f138d200000, 138412032 [pid 5204] +++ exited with 0 +++ [pid 5058] <... openat resumed>) = 3 [pid 5208] <... munmap resumed>) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5204, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5060] umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(3, "", [pid 5208] <... openat resumed>) = 4 [pid 5207] <... write resumed>) = 524288 [pid 5206] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5205] <... ioctl resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5208] ioctl(4, LOOP_SET_FD, 3 [pid 5207] munmap(0x7f138d200000, 138412032 [pid 5206] <... openat resumed>) = 4 [pid 5205] close(3 [pid 5060] <... openat resumed>) = 3 [pid 5206] ioctl(4, LOOP_SET_FD, 3 [pid 5058] getdents64(3, [pid 5208] <... ioctl resumed>) = 0 [pid 5207] <... munmap resumed>) = 0 [pid 5205] <... close resumed>) = 0 [pid 5060] newfstatat(3, "", [pid 5208] close(3 [pid 5207] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5205] close(4 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5208] <... close resumed>) = 0 [pid 5207] <... openat resumed>) = 4 [pid 5205] <... close resumed>) = 0 [pid 5060] getdents64(3, [pid 5208] close(4 [pid 5207] ioctl(4, LOOP_SET_FD, 3 [pid 5205] mkdir("./bus", 0777 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5208] <... close resumed>) = 0 [pid 5205] <... mkdir resumed>) = 0 [pid 5060] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5208] mkdir("./bus", 0777 [pid 5205] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "") = 0 [pid 5208] <... mkdir resumed>) = 0 [pid 5205] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5205] chdir("./bus") = 0 [pid 5208] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5205] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5060] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5205] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5207] <... ioctl resumed>) = 0 [pid 5206] <... ioctl resumed>) = 0 [pid 5060] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5207] close(3 [pid 5206] close(3 [pid 5205] <... symlink resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./22/bus", [pid 5208] <... mount resumed>) = 0 [pid 5207] <... close resumed>) = 0 [pid 5206] <... close resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./21/bus", [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5208] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5207] close(4 [pid 5206] close(4 [pid 5205] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5208] <... openat resumed>) = 3 [pid 5207] <... close resumed>) = 0 [pid 5206] <... close resumed>) = 0 [pid 5060] umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5207] mkdir("./bus", 0777 [pid 5206] mkdir("./bus", 0777 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 68.478685][ T5205] loop1: detected capacity change from 0 to 1024 [ 68.501534][ T5208] loop0: detected capacity change from 0 to 1024 [ 68.502747][ T5206] loop5: detected capacity change from 0 to 1024 [ 68.513502][ T5207] loop3: detected capacity change from 0 to 1024 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5208] chdir("./bus" [pid 5206] <... mkdir resumed>) = 0 [pid 5205] <... creat resumed>) = 4 [pid 5060] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5208] <... chdir resumed>) = 0 [pid 5205] rename("./bus", "./file2" [pid 5060] <... openat resumed>) = 4 [pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5207] <... mkdir resumed>) = 0 [pid 5206] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] newfstatat(4, "", [pid 5058] <... openat resumed>) = 4 [pid 5208] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5207] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5205] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] newfstatat(4, "", [pid 5208] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5205] memfd_create("syzkaller", 0 [pid 5060] getdents64(4, [pid 5205] <... memfd_create resumed>) = 5 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] getdents64(4, [pid 5058] getdents64(4, [pid 5205] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5207] <... mount resumed>) = 0 [pid 5206] <... mount resumed>) = 0 [pid 5060] close(4 [pid 5058] getdents64(4, [pid 5207] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5206] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] <... close resumed>) = 0 [pid 5208] <... symlink resumed>) = 0 [pid 5207] <... openat resumed>) = 3 [pid 5206] <... openat resumed>) = 3 [pid 5060] rmdir("./21/bus" [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5208] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5207] chdir("./bus" [pid 5206] chdir("./bus" [pid 5205] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... rmdir resumed>) = 0 [pid 5058] close(4 [pid 5207] <... chdir resumed>) = 0 [pid 5206] <... chdir resumed>) = 0 [pid 5060] umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... close resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] rmdir("./22/bus" [pid 5207] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5206] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] newfstatat(AT_FDCWD, "./21/binderfs", [pid 5208] <... creat resumed>) = 4 [pid 5058] <... rmdir resumed>) = 0 [pid 5206] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5208] rename("./bus", "./file2" [pid 5206] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5207] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] unlink("./21/binderfs" [pid 5058] newfstatat(AT_FDCWD, "./22/binderfs", [pid 5207] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5208] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] unlink("./22/binderfs" [pid 5060] <... unlink resumed>) = 0 [pid 5208] memfd_create("syzkaller", 0 [pid 5207] <... symlink resumed>) = 0 [pid 5205] <... write resumed>) = 524288 [pid 5060] getdents64(3, [pid 5058] <... unlink resumed>) = 0 [pid 5208] <... memfd_create resumed>) = 5 [pid 5207] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5206] <... symlink resumed>) = 0 [pid 5205] munmap(0x7f138d200000, 138412032 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(3, [pid 5208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5205] <... munmap resumed>) = 0 [pid 5060] close(3 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5208] <... mmap resumed>) = 0x7f138d200000 [pid 5058] close(3 [pid 5206] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... close resumed>) = 0 [pid 5205] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5205] close(5 [pid 5060] rmdir("./21" [pid 5205] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5058] rmdir("./22" [pid 5208] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288) = 524288 [pid 5207] <... creat resumed>) = 4 [pid 5060] mkdir("./22", 0777 [pid 5058] <... rmdir resumed>) = 0 [pid 5205] creat("./file1", 000 [pid 5207] rename("./bus", "./file2" [pid 5206] <... creat resumed>) = 4 [pid 5060] <... mkdir resumed>) = 0 [pid 5058] mkdir("./23", 0777 [pid 5206] rename("./bus", "./file2" [pid 5205] <... creat resumed>) = 5 [pid 5058] <... mkdir resumed>) = 0 [pid 5205] exit_group(0) = ? [pid 5207] <... rename resumed>) = -1 EEXIST (File exists) [pid 5206] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5207] memfd_create("syzkaller", 0 [pid 5206] memfd_create("syzkaller", 0 [pid 5060] <... openat resumed>) = 3 [pid 5058] <... openat resumed>) = 3 [pid 5207] <... memfd_create resumed>) = 5 [pid 5208] munmap(0x7f138d200000, 138412032 [pid 5205] +++ exited with 0 +++ [pid 5208] <... munmap resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5205, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5057] umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5208] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... openat resumed>) = 3 [pid 5208] close(5 [pid 5057] newfstatat(3, "", [pid 5207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5206] <... memfd_create resumed>) = 5 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5207] <... mmap resumed>) = 0x7f138d200000 [pid 5206] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5206] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5208] <... close resumed>) = 0 [pid 5208] creat("./file1", 000 [pid 5057] <... umount2 resumed>) = 0 [pid 5057] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./23/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5208] <... creat resumed>) = 5 [pid 5208] exit_group(0 [pid 5057] getdents64(4, [pid 5208] <... exit_group resumed>) = ? [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5208] +++ exited with 0 +++ [pid 5207] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5206] <... write resumed>) = 524288 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5208, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./23/bus") = 0 [pid 5056] umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", [pid 5057] umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5057] newfstatat(AT_FDCWD, "./23/binderfs", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5207] <... write resumed>) = 524288 [pid 5206] munmap(0x7f138d200000, 138412032 [pid 5057] unlink("./23/binderfs") = 0 [pid 5057] getdents64(3, [pid 5206] <... munmap resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5207] munmap(0x7f138d200000, 138412032 [pid 5206] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] rmdir("./23" [pid 5207] <... munmap resumed>) = 0 [pid 5206] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5207] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5206] close(5 [pid 5057] mkdir("./24", 0777) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5207] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5207] close(5 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] newfstatat(AT_FDCWD, "./22/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5207] <... close resumed>) = 0 [pid 5207] creat("./file1", 000 [pid 5206] <... close resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(3 [pid 5056] close(4 [pid 5060] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... close resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5209 [pid 5056] rmdir("./22/bus") = 0 ./strace-static-x86_64: Process 5209 attached [pid 5206] creat("./file1", 000 [pid 5056] umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5209] set_robust_list(0x555556c07660, 24) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5209] chdir("./22" [pid 5056] newfstatat(AT_FDCWD, "./22/binderfs", [pid 5207] <... creat resumed>) = 5 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5209] <... chdir resumed>) = 0 [pid 5056] unlink("./22/binderfs" [pid 5209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5209] setpgid(0, 0 [pid 5207] exit_group(0 [pid 5058] close(3 [pid 5209] <... setpgid resumed>) = 0 [pid 5207] <... exit_group resumed>) = ? [pid 5209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 5210 attached [pid 5209] <... openat resumed>) = 3 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5210 [pid 5056] close(3 [pid 5210] set_robust_list(0x555556c07660, 24 [pid 5207] +++ exited with 0 +++ [pid 5210] <... set_robust_list resumed>) = 0 [pid 5210] chdir("./23" [pid 5209] write(3, "1000", 4 [pid 5206] <... creat resumed>) = 5 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5207, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] <... close resumed>) = 0 [pid 5209] <... write resumed>) = 4 [pid 5209] close(3 [pid 5206] exit_group(0 [pid 5056] rmdir("./22" [pid 5209] <... close resumed>) = 0 [pid 5206] <... exit_group resumed>) = ? [pid 5209] symlink("/dev/binderfs", "./binderfs" [pid 5210] <... chdir resumed>) = 0 [pid 5210] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5056] <... rmdir resumed>) = 0 [pid 5210] <... prctl resumed>) = 0 [pid 5209] <... symlink resumed>) = 0 [pid 5056] mkdir("./23", 0777 [pid 5210] setpgid(0, 0) = 0 [pid 5210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5206] +++ exited with 0 +++ [pid 5210] write(3, "1000", 4 [pid 5059] umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... mkdir resumed>) = 0 [pid 5210] <... write resumed>) = 4 [pid 5209] memfd_create("syzkaller", 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5206, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5210] close(3 [pid 5209] <... memfd_create resumed>) = 3 [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5059] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5210] <... close resumed>) = 0 [pid 5061] <... restart_syscall resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5210] symlink("/dev/binderfs", "./binderfs" [pid 5209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... openat resumed>) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5210] <... symlink resumed>) = 0 [pid 5059] newfstatat(3, "", [pid 5057] <... ioctl resumed>) = 0 [pid 5210] memfd_create("syzkaller", 0 [pid 5209] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] close(3 [pid 5210] <... memfd_create resumed>) = 3 [pid 5061] umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5210] <... mmap resumed>) = 0x7f138d200000 [pid 5061] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5210] 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"..., 524288 [pid 5209] 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"..., 524288 [pid 5061] <... openat resumed>) = 3 [pid 5059] getdents64(3, [pid 5057] <... close resumed>) = 0 [pid 5061] newfstatat(3, "", [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 ./strace-static-x86_64: Process 5211 attached [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5211 [pid 5211] set_robust_list(0x555556c07660, 24 [pid 5061] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5211] <... set_robust_list resumed>) = 0 [pid 5211] chdir("./24" [pid 5209] <... write resumed>) = 524288 [pid 5211] <... chdir resumed>) = 0 [pid 5211] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5209] munmap(0x7f138d200000, 138412032 [pid 5211] <... prctl resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5211] setpgid(0, 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5059] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... ioctl resumed>) = 0 [pid 5211] <... setpgid resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./23/bus", [pid 5211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5210] <... write resumed>) = 524288 [pid 5061] newfstatat(AT_FDCWD, "./24/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5210] munmap(0x7f138d200000, 138412032 [pid 5061] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5210] <... munmap resumed>) = 0 [pid 5059] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5211] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5210] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5209] <... munmap resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5211] write(3, "1000", 4 [pid 5210] <... openat resumed>) = 4 [pid 5209] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] <... openat resumed>) = 4 [pid 5059] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] close(3 [pid 5211] <... write resumed>) = 4 [pid 5211] close(3 [pid 5210] ioctl(4, LOOP_SET_FD, 3 [pid 5209] <... openat resumed>) = 4 [pid 5061] newfstatat(4, "", [pid 5059] <... openat resumed>) = 4 [pid 5056] <... close resumed>) = 0 [pid 5211] <... close resumed>) = 0 [pid 5209] ioctl(4, LOOP_SET_FD, 3 [pid 5059] newfstatat(4, "", [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5211] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 5212 attached ) = 0 [pid 5210] <... ioctl resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5212] set_robust_list(0x555556c07660, 24 [pid 5061] getdents64(4, [pid 5212] <... set_robust_list resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5212] chdir("./23" [pid 5061] getdents64(4, [pid 5212] <... chdir resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] close(4 [pid 5212] <... prctl resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5059] getdents64(4, [pid 5212] setpgid(0, 0 [pid 5211] memfd_create("syzkaller", 0 [pid 5061] rmdir("./24/bus" [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5212] <... setpgid resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] getdents64(4, [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5212 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5211] <... memfd_create resumed>) = 3 [pid 5061] umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5212] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5212] write(3, "1000", 4 [pid 5061] newfstatat(AT_FDCWD, "./24/binderfs", [pid 5212] <... write resumed>) = 4 [pid 5211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] close(4 [pid 5211] <... mmap resumed>) = 0x7f138d200000 [pid 5061] unlink("./24/binderfs" [pid 5212] close(3 [pid 5061] <... unlink resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5212] <... close resumed>) = 0 [pid 5210] close(3 [pid 5061] getdents64(3, [pid 5059] rmdir("./23/bus" [pid 5212] symlink("/dev/binderfs", "./binderfs" [pid 5210] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5212] <... symlink resumed>) = 0 [pid 5061] close(3 [pid 5059] <... rmdir resumed>) = 0 [pid 5212] memfd_create("syzkaller", 0 [pid 5210] close(4 [pid 5061] <... close resumed>) = 0 [pid 5210] <... close resumed>) = 0 [pid 5061] rmdir("./24" [pid 5212] <... memfd_create resumed>) = 3 [pid 5210] mkdir("./bus", 0777 [pid 5061] <... rmdir resumed>) = 0 [pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5210] <... mkdir resumed>) = 0 [pid 5061] mkdir("./25", 0777 [pid 5212] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... mkdir resumed>) = 0 [pid 5210] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5211] 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"..., 524288 [pid 5061] <... openat resumed>) = 3 [pid 5059] umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5209] <... ioctl resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5209] close(3) = 0 [pid 5212] 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"..., 524288 [pid 5209] close(4 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] newfstatat(AT_FDCWD, "./23/binderfs", [pid 5209] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5212] <... write resumed>) = 524288 [pid 5211] <... write resumed>) = 524288 [pid 5210] <... mount resumed>) = 0 [pid 5209] mkdir("./bus", 0777 [pid 5212] munmap(0x7f138d200000, 138412032 [pid 5210] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5212] <... munmap resumed>) = 0 [pid 5210] <... openat resumed>) = 3 [ 68.828106][ T5210] loop2: detected capacity change from 0 to 1024 [ 68.829425][ T5209] loop4: detected capacity change from 0 to 1024 [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5210] chdir("./bus" [pid 5059] unlink("./23/binderfs" [pid 5212] <... openat resumed>) = 4 [pid 5210] <... chdir resumed>) = 0 [pid 5212] ioctl(4, LOOP_SET_FD, 3 [pid 5210] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5209] <... mkdir resumed>) = 0 [pid 5211] munmap(0x7f138d200000, 138412032 [pid 5210] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5209] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] <... unlink resumed>) = 0 [pid 5059] getdents64(3, [pid 5210] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5059] rmdir("./23" [pid 5210] <... symlink resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5211] <... munmap resumed>) = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5210] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] mkdir("./24", 0777 [pid 5211] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5210] <... creat resumed>) = 4 [pid 5210] rename("./bus", "./file2" [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5209] <... mount resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5209] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5210] <... rename resumed>) = -1 EEXIST (File exists) [pid 5209] <... openat resumed>) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5210] memfd_create("syzkaller", 0 [pid 5209] chdir("./bus" [pid 5210] <... memfd_create resumed>) = 5 [pid 5209] <... chdir resumed>) = 0 [pid 5210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5212] <... ioctl resumed>) = 0 [pid 5210] <... mmap resumed>) = 0x7f138d200000 [pid 5209] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5212] close(3 [pid 5210] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5212] <... close resumed>) = 0 [pid 5209] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... ioctl resumed>) = 0 [pid 5212] close(4 [pid 5211] close(3 [pid 5209] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] close(3 [pid 5212] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5212] mkdir("./bus", 0777 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5212] <... mkdir resumed>) = 0 [pid 5211] <... close resumed>) = 0 [ 68.891091][ T5212] loop0: detected capacity change from 0 to 1024 [ 68.906429][ T5211] loop1: detected capacity change from 0 to 1024 [pid 5211] close(4 [pid 5212] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5211] <... close resumed>) = 0 [pid 5211] mkdir("./bus", 0777 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5213 [pid 5209] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 5213 attached [pid 5211] <... mkdir resumed>) = 0 [pid 5210] <... write resumed>) = 524288 [pid 5209] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5211] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5213] set_robust_list(0x555556c07660, 24) = 0 [pid 5213] chdir("./25") = 0 [pid 5212] <... mount resumed>) = 0 [pid 5209] <... creat resumed>) = 4 [pid 5213] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5212] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5213] <... prctl resumed>) = 0 [pid 5212] <... openat resumed>) = 3 [pid 5209] rename("./bus", "./file2" [pid 5213] setpgid(0, 0 [pid 5212] chdir("./bus" [pid 5059] <... ioctl resumed>) = 0 [pid 5213] <... setpgid resumed>) = 0 [pid 5212] <... chdir resumed>) = 0 [pid 5209] <... rename resumed>) = -1 EEXIST (File exists) [pid 5213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5210] munmap(0x7f138d200000, 138412032 [pid 5209] memfd_create("syzkaller", 0 [pid 5059] close(3 [pid 5213] <... openat resumed>) = 3 [pid 5212] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5211] <... mount resumed>) = 0 [pid 5210] <... munmap resumed>) = 0 [pid 5209] <... memfd_create resumed>) = 5 [pid 5059] <... close resumed>) = 0 [pid 5209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5211] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5212] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5213] write(3, "1000", 4 [pid 5211] <... openat resumed>) = 3 [pid 5210] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5209] <... mmap resumed>) = 0x7f138d200000 [pid 5213] <... write resumed>) = 4 [pid 5211] chdir("./bus" [pid 5210] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5213] close(3 [pid 5211] <... chdir resumed>) = 0 [pid 5210] close(5./strace-static-x86_64: Process 5214 attached [pid 5213] <... close resumed>) = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5210] <... close resumed>) = 0 [pid 5209] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5214 [pid 5213] symlink("/dev/binderfs", "./binderfs" [pid 5212] <... symlink resumed>) = 0 [pid 5211] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5213] <... symlink resumed>) = 0 [pid 5212] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5214] set_robust_list(0x555556c07660, 24 [pid 5213] memfd_create("syzkaller", 0 [pid 5214] <... set_robust_list resumed>) = 0 [pid 5213] <... memfd_create resumed>) = 3 [pid 5211] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5212] <... creat resumed>) = 4 [pid 5214] chdir("./24" [pid 5213] <... mmap resumed>) = 0x7f138d200000 [pid 5212] rename("./bus", "./file2" [pid 5214] <... chdir resumed>) = 0 [pid 5213] 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"..., 524288 [pid 5211] <... symlink resumed>) = 0 [pid 5210] creat("./file1", 000 [pid 5209] <... write resumed>) = 524288 [pid 5212] <... rename resumed>) = -1 EEXIST (File exists) [pid 5212] memfd_create("syzkaller", 0) = 5 [pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5212] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5210] <... creat resumed>) = 5 [pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5211] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5210] exit_group(0 [pid 5214] <... prctl resumed>) = 0 [pid 5213] <... write resumed>) = 524288 [pid 5211] <... creat resumed>) = 4 [pid 5210] <... exit_group resumed>) = ? [pid 5209] munmap(0x7f138d200000, 138412032 [pid 5214] setpgid(0, 0 [pid 5212] <... write resumed>) = 524288 [pid 5211] rename("./bus", "./file2" [pid 5209] <... munmap resumed>) = 0 [pid 5214] <... setpgid resumed>) = 0 [pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5211] <... rename resumed>) = -1 EEXIST (File exists) [pid 5210] +++ exited with 0 +++ [pid 5209] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5211] memfd_create("syzkaller", 0 [pid 5209] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5214] <... openat resumed>) = 3 [pid 5211] <... memfd_create resumed>) = 5 [pid 5209] close(5 [pid 5214] write(3, "1000", 4 [pid 5211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5214] <... write resumed>) = 4 [pid 5214] close(3 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5210, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5214] <... close resumed>) = 0 [pid 5211] <... mmap resumed>) = 0x7f138d200000 [pid 5058] umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5214] symlink("/dev/binderfs", "./binderfs" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5214] <... symlink resumed>) = 0 [pid 5209] <... close resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5214] memfd_create("syzkaller", 0 [pid 5213] munmap(0x7f138d200000, 138412032 [pid 5058] <... openat resumed>) = 3 [pid 5214] <... memfd_create resumed>) = 3 [pid 5213] <... munmap resumed>) = 0 [pid 5213] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] newfstatat(3, "", [pid 5214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5213] <... openat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5213] ioctl(4, LOOP_SET_FD, 3 [pid 5214] <... mmap resumed>) = 0x7f138d200000 [pid 5058] getdents64(3, [pid 5212] munmap(0x7f138d200000, 138412032 [pid 5211] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5209] creat("./file1", 000 [pid 5212] <... munmap resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5212] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5212] close(5) = 0 [pid 5209] <... creat resumed>) = 5 [pid 5209] exit_group(0) = ? [pid 5214] 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"..., 524288 [pid 5213] <... ioctl resumed>) = 0 [pid 5209] +++ exited with 0 +++ [pid 5213] close(3) = 0 [pid 5212] creat("./file1", 000 [pid 5213] close(4) = 0 [pid 5213] mkdir("./bus", 0777) = 0 [pid 5213] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5212] <... creat resumed>) = 5 [pid 5212] exit_group(0 [pid 5211] <... write resumed>) = 524288 [pid 5212] <... exit_group resumed>) = ? [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5209, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5212] +++ exited with 0 +++ [pid 5211] munmap(0x7f138d200000, 138412032 [pid 5060] umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5213] <... mount resumed>) = 0 [pid 5211] <... munmap resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5212, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5213] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5213] <... openat resumed>) = 3 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... umount2 resumed>) = 0 [pid 5211] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... openat resumed>) = 3 [pid 5058] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5211] close(5 [pid 5060] newfstatat(3, "", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5214] <... write resumed>) = 524288 [ 69.051194][ T5213] loop5: detected capacity change from 0 to 1024 [pid 5213] chdir("./bus" [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] newfstatat(AT_FDCWD, "./23/bus", [pid 5213] <... chdir resumed>) = 0 [pid 5060] getdents64(3, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5213] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5213] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5214] munmap(0x7f138d200000, 138412032 [pid 5213] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5214] <... munmap resumed>) = 0 [pid 5211] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5214] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5211] creat("./file1", 000 [pid 5058] newfstatat(4, "", [pid 5056] <... openat resumed>) = 3 [pid 5214] <... openat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(3, "", [pid 5214] ioctl(4, LOOP_SET_FD, 3 [pid 5213] <... symlink resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5213] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./23/bus") = 0 [pid 5058] umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5211] <... creat resumed>) = 5 [pid 5060] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5211] exit_group(0 [pid 5058] newfstatat(AT_FDCWD, "./23/binderfs", [pid 5213] <... creat resumed>) = 4 [pid 5211] <... exit_group resumed>) = ? [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5213] rename("./bus", "./file2" [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] newfstatat(AT_FDCWD, "./22/bus", [pid 5058] unlink("./23/binderfs" [pid 5056] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5211] +++ exited with 0 +++ [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5213] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5213] memfd_create("syzkaller", 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5213] <... memfd_create resumed>) = 5 [pid 5058] getdents64(3, [pid 5213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5211, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5213] <... mmap resumed>) = 0x7f138d200000 [pid 5060] newfstatat(4, "", [pid 5058] close(3 [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5213] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5056] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(4, [pid 5058] rmdir("./23" [pid 5057] umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./23/bus", [pid 5057] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", [pid 5060] getdents64(4, [pid 5058] mkdir("./24", 0777 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5214] <... ioctl resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5213] <... write resumed>) = 524288 [pid 5060] close(4 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5214] close(3 [pid 5057] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5214] <... close resumed>) = 0 [pid 5214] close(4 [pid 5060] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5214] <... close resumed>) = 0 [pid 5214] mkdir("./bus", 0777 [pid 5060] rmdir("./22/bus" [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] <... openat resumed>) = 4 [pid 5214] <... mkdir resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] newfstatat(4, "", [pid 5214] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(4, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] newfstatat(AT_FDCWD, "./22/binderfs", [pid 5056] getdents64(4, [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] unlink("./22/binderfs" [pid 5214] <... mount resumed>) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5056] close(4 [pid 5213] munmap(0x7f138d200000, 138412032 [pid 5060] getdents64(3, [pid 5213] <... munmap resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... close resumed>) = 0 [ 69.120791][ T5214] loop3: detected capacity change from 0 to 1024 [pid 5056] rmdir("./23/bus" [pid 5214] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] close(3 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5213] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... close resumed>) = 0 [pid 5213] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] rmdir("./22" [pid 5056] umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5213] close(5 [pid 5060] <... rmdir resumed>) = 0 [pid 5213] <... close resumed>) = 0 [pid 5060] mkdir("./23", 0777 [pid 5214] <... openat resumed>) = 3 [pid 5057] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5214] chdir("./bus" [pid 5213] creat("./file1", 000 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./23/binderfs", [pid 5214] <... chdir resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./24/bus", [pid 5214] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5213] <... creat resumed>) = 5 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5214] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5213] exit_group(0 [pid 5057] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] unlink("./23/binderfs" [pid 5213] <... exit_group resumed>) = ? [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5214] <... symlink resumed>) = 0 [pid 5213] +++ exited with 0 +++ [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] close(3 [pid 5057] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... unlink resumed>) = 0 [pid 5214] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5213, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5057] <... openat resumed>) = 4 [pid 5056] getdents64(3, [pid 5061] <... restart_syscall resumed>) = 0 [pid 5061] umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5061] newfstatat(3, "", [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5215 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5215 attached [pid 5214] <... creat resumed>) = 4 [pid 5057] newfstatat(4, "", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5214] rename("./bus", "./file2" [pid 5215] set_robust_list(0x555556c07660, 24 [pid 5056] close(3 [pid 5215] <... set_robust_list resumed>) = 0 [pid 5214] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] <... umount2 resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... close resumed>) = 0 [pid 5215] chdir("./24" [pid 5057] getdents64(4, [pid 5056] rmdir("./23" [pid 5214] memfd_create("syzkaller", 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5215] <... chdir resumed>) = 0 [pid 5214] <... memfd_create resumed>) = 5 [pid 5057] getdents64(4, [pid 5056] mkdir("./24", 0777 [pid 5215] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5215] <... prctl resumed>) = 0 [pid 5214] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(4 [pid 5056] <... mkdir resumed>) = 0 [pid 5215] setpgid(0, 0 [pid 5061] newfstatat(AT_FDCWD, "./25/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5215] <... setpgid resumed>) = 0 [pid 5061] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] rmdir("./24/bus" [pid 5056] <... openat resumed>) = 3 [pid 5215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... rmdir resumed>) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5061] newfstatat(4, "", [pid 5215] <... openat resumed>) = 3 [pid 5057] umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5215] write(3, "1000", 4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5215] <... write resumed>) = 4 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] newfstatat(AT_FDCWD, "./24/binderfs", [pid 5215] close(3 [pid 5214] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] getdents64(4, [pid 5215] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5215] symlink("/dev/binderfs", "./binderfs" [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4 [pid 5215] <... symlink resumed>) = 0 [pid 5214] <... write resumed>) = 524288 [pid 5060] <... ioctl resumed>) = 0 [pid 5057] unlink("./24/binderfs" [pid 5215] memfd_create("syzkaller", 0) = 3 [pid 5214] munmap(0x7f138d200000, 138412032 [pid 5061] <... close resumed>) = 0 [pid 5060] close(3 [pid 5057] <... unlink resumed>) = 0 [pid 5215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5214] <... munmap resumed>) = 0 [pid 5061] rmdir("./25/bus" [pid 5060] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5215] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5214] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... rmdir resumed>) = 0 [pid 5057] close(3 [pid 5214] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5214] close(5 [pid 5057] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] rmdir("./24" [pid 5215] 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"..., 524288 [pid 5061] newfstatat(AT_FDCWD, "./25/binderfs", [pid 5057] <... rmdir resumed>) = 0 [pid 5057] mkdir("./25", 0777 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./25/binderfs" [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5216 ./strace-static-x86_64: Process 5216 attached [pid 5057] <... mkdir resumed>) = 0 [pid 5216] set_robust_list(0x555556c07660, 24 [pid 5214] <... close resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5216] <... set_robust_list resumed>) = 0 [pid 5215] <... write resumed>) = 524288 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5216] chdir("./23") = 0 [pid 5057] <... openat resumed>) = 3 [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5216] <... prctl resumed>) = 0 [pid 5214] creat("./file1", 000 [pid 5216] setpgid(0, 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5216] <... setpgid resumed>) = 0 [pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5216] write(3, "1000", 4) = 4 [pid 5216] close(3) = 0 [pid 5215] munmap(0x7f138d200000, 138412032 [pid 5216] symlink("/dev/binderfs", "./binderfs" [pid 5215] <... munmap resumed>) = 0 [pid 5061] close(3 [pid 5216] <... symlink resumed>) = 0 [pid 5216] memfd_create("syzkaller", 0 [pid 5061] <... close resumed>) = 0 [pid 5216] <... memfd_create resumed>) = 3 [pid 5215] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5214] <... creat resumed>) = 5 [pid 5061] rmdir("./25" [pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5215] <... openat resumed>) = 4 [pid 5214] exit_group(0 [pid 5061] <... rmdir resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5061] mkdir("./26", 0777 [pid 5216] <... mmap resumed>) = 0x7f138d200000 [pid 5215] ioctl(4, LOOP_SET_FD, 3 [pid 5214] <... exit_group resumed>) = ? [pid 5216] 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"..., 524288 [pid 5214] +++ exited with 0 +++ [pid 5061] <... mkdir resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5056] close(3 [pid 5215] <... ioctl resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5214, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] <... openat resumed>) = 3 [pid 5056] <... close resumed>) = 0 [pid 5059] umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5215] close(3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5215] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5059] newfstatat(3, "", [pid 5215] close(4) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5215] mkdir("./bus", 0777 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5216] <... write resumed>) = 524288 [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5215] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5217 attached [pid 5215] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5217] set_robust_list(0x555556c07660, 24) = 0 [pid 5217] chdir("./24") = 0 [pid 5217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5059] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5217] setpgid(0, 0) = 0 [pid 5059] newfstatat(AT_FDCWD, "./24/bus", [pid 5217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 69.315190][ T5215] loop2: detected capacity change from 0 to 1024 [pid 5216] munmap(0x7f138d200000, 138412032 [pid 5059] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(3 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5217 [pid 5216] <... munmap resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... close resumed>) = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5216] <... openat resumed>) = 4 [pid 5059] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5216] ioctl(4, LOOP_SET_FD, 3 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./24/bus") = 0 [pid 5059] umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./24/binderfs") = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5059] rmdir("./24") = 0 [pid 5059] mkdir("./25", 0777) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5218 attached [pid 5217] <... openat resumed>) = 3 [pid 5216] <... ioctl resumed>) = 0 [pid 5215] <... mount resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5218 [pid 5218] set_robust_list(0x555556c07660, 24 [pid 5216] close(3 [pid 5218] <... set_robust_list resumed>) = 0 [pid 5216] <... close resumed>) = 0 [pid 5218] chdir("./25" [pid 5216] close(4 [pid 5217] write(3, "1000", 4 [pid 5215] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5217] <... write resumed>) = 4 [pid 5218] <... chdir resumed>) = 0 [pid 5217] close(3 [pid 5216] <... close resumed>) = 0 [pid 5215] <... openat resumed>) = 3 [pid 5218] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5217] <... close resumed>) = 0 [pid 5216] mkdir("./bus", 0777 [pid 5217] symlink("/dev/binderfs", "./binderfs" [pid 5216] <... mkdir resumed>) = 0 [pid 5061] close(3 [pid 5218] <... prctl resumed>) = 0 [pid 5216] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5218] setpgid(0, 0 [pid 5217] <... symlink resumed>) = 0 [pid 5215] chdir("./bus" [pid 5061] <... close resumed>) = 0 [pid 5218] <... setpgid resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5217] memfd_create("syzkaller", 0 [pid 5215] <... chdir resumed>) = 0 [pid 5215] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5219 ./strace-static-x86_64: Process 5219 attached [pid 5218] <... openat resumed>) = 3 [pid 5217] <... memfd_create resumed>) = 3 [pid 5216] <... mount resumed>) = 0 [pid 5215] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... ioctl resumed>) = 0 [pid 5219] set_robust_list(0x555556c07660, 24 [pid 5217] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5215] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5219] <... set_robust_list resumed>) = 0 [pid 5217] <... mmap resumed>) = 0x7f138d200000 [pid 5216] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5219] chdir("./26" [pid 5216] <... openat resumed>) = 3 [pid 5216] chdir("./bus" [pid 5218] write(3, "1000", 4 [pid 5216] <... chdir resumed>) = 0 [pid 5219] <... chdir resumed>) = 0 [pid 5218] <... write resumed>) = 4 [pid 5217] 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"..., 524288 [pid 5216] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5218] close(3 [pid 5216] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 69.361094][ T5216] loop4: detected capacity change from 0 to 1024 [pid 5215] <... symlink resumed>) = 0 [pid 5219] <... prctl resumed>) = 0 [pid 5218] <... close resumed>) = 0 [pid 5217] <... write resumed>) = 524288 [pid 5216] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] close(3 [pid 5218] symlink("/dev/binderfs", "./binderfs" [pid 5219] setpgid(0, 0) = 0 [pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... close resumed>) = 0 [pid 5218] <... symlink resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5218] memfd_create("syzkaller", 0 [pid 5219] <... openat resumed>) = 3 [pid 5219] write(3, "1000", 4) = 4 [pid 5215] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5219] close(3 [pid 5218] <... memfd_create resumed>) = 3 [pid 5219] <... close resumed>) = 0 [pid 5218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5219] symlink("/dev/binderfs", "./binderfs" [pid 5218] <... mmap resumed>) = 0x7f138d200000 ./strace-static-x86_64: Process 5220 attached [pid 5219] <... symlink resumed>) = 0 [pid 5216] <... symlink resumed>) = 0 [pid 5219] memfd_create("syzkaller", 0 [pid 5220] set_robust_list(0x555556c07660, 24 [pid 5219] <... memfd_create resumed>) = 3 [pid 5220] <... set_robust_list resumed>) = 0 [pid 5217] munmap(0x7f138d200000, 138412032 [pid 5216] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5215] <... creat resumed>) = 4 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5220 [pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5217] <... munmap resumed>) = 0 [pid 5215] rename("./bus", "./file2" [pid 5219] <... mmap resumed>) = 0x7f138d200000 [pid 5217] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5220] chdir("./25" [pid 5218] 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"..., 524288 [pid 5215] <... rename resumed>) = -1 EEXIST (File exists) [pid 5220] <... chdir resumed>) = 0 [pid 5216] <... creat resumed>) = 4 [pid 5215] memfd_create("syzkaller", 0 [pid 5220] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5217] <... openat resumed>) = 4 [pid 5216] rename("./bus", "./file2" [pid 5215] <... memfd_create resumed>) = 5 [pid 5219] 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"..., 524288 [pid 5217] ioctl(4, LOOP_SET_FD, 3 [pid 5215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5220] <... prctl resumed>) = 0 [pid 5218] <... write resumed>) = 524288 [pid 5216] <... rename resumed>) = -1 EEXIST (File exists) [pid 5220] setpgid(0, 0 [pid 5219] <... write resumed>) = 524288 [pid 5218] munmap(0x7f138d200000, 138412032 [pid 5217] <... ioctl resumed>) = 0 [pid 5215] <... mmap resumed>) = 0x7f138d200000 [pid 5220] <... setpgid resumed>) = 0 [pid 5219] munmap(0x7f138d200000, 138412032 [pid 5218] <... munmap resumed>) = 0 [pid 5217] close(3 [pid 5216] memfd_create("syzkaller", 0 [pid 5215] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5217] <... close resumed>) = 0 [pid 5219] <... munmap resumed>) = 0 [pid 5218] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5217] close(4 [pid 5216] <... memfd_create resumed>) = 5 [pid 5220] <... openat resumed>) = 3 [pid 5219] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5218] <... openat resumed>) = 4 [pid 5217] <... close resumed>) = 0 [pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5215] <... write resumed>) = 524288 [pid 5220] write(3, "1000", 4 [pid 5219] <... openat resumed>) = 4 [pid 5217] mkdir("./bus", 0777 [pid 5216] <... mmap resumed>) = 0x7f138d200000 [pid 5220] <... write resumed>) = 4 [pid 5219] ioctl(4, LOOP_SET_FD, 3 [pid 5218] ioctl(4, LOOP_SET_FD, 3 [pid 5217] <... mkdir resumed>) = 0 [pid 5215] munmap(0x7f138d200000, 138412032 [pid 5217] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5215] <... munmap resumed>) = 0 [pid 5220] close(3) = 0 [pid 5220] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5220] memfd_create("syzkaller", 0) = 3 [pid 5220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5216] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5220] <... mmap resumed>) = 0x7f138d200000 [pid 5219] <... ioctl resumed>) = 0 [pid 5215] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5220] 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"..., 524288 [pid 5219] close(3 [pid 5218] <... ioctl resumed>) = 0 [pid 5215] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5219] <... close resumed>) = 0 [pid 5215] close(5 [pid 5219] close(4 [pid 5216] <... write resumed>) = 524288 [pid 5219] <... close resumed>) = 0 [pid 5218] close(3 [pid 5216] munmap(0x7f138d200000, 138412032 [pid 5215] <... close resumed>) = 0 [pid 5219] mkdir("./bus", 0777 [pid 5218] <... close resumed>) = 0 [pid 5215] creat("./file1", 000 [pid 5219] <... mkdir resumed>) = 0 [pid 5218] close(4 [pid 5216] <... munmap resumed>) = 0 [pid 5219] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5218] <... close resumed>) = 0 [pid 5217] <... mount resumed>) = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5218] mkdir("./bus", 0777 [pid 5217] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5217] chdir("./bus") = 0 [pid 5218] <... mkdir resumed>) = 0 [pid 5217] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5216] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5220] <... write resumed>) = 524288 [pid 5217] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5217] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5220] munmap(0x7f138d200000, 138412032 [pid 5218] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5216] close(5 [pid 5217] <... symlink resumed>) = 0 [pid 5220] <... munmap resumed>) = 0 [ 69.463162][ T5217] loop0: detected capacity change from 0 to 1024 [ 69.495638][ T5219] loop5: detected capacity change from 0 to 1024 [ 69.504297][ T5218] loop1: detected capacity change from 0 to 1024 [pid 5220] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5217] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5220] <... openat resumed>) = 4 [pid 5220] ioctl(4, LOOP_SET_FD, 3 [pid 5219] <... mount resumed>) = 0 [pid 5220] <... ioctl resumed>) = 0 [pid 5219] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5217] <... creat resumed>) = 4 [pid 5219] <... openat resumed>) = 3 [pid 5219] chdir("./bus") = 0 [pid 5219] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5217] rename("./bus", "./file2" [pid 5219] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5216] <... close resumed>) = 0 [pid 5215] <... creat resumed>) = 5 [pid 5215] exit_group(0 [pid 5219] <... symlink resumed>) = 0 [pid 5218] <... mount resumed>) = 0 [pid 5217] <... rename resumed>) = -1 EEXIST (File exists) [pid 5216] creat("./file1", 000 [pid 5215] <... exit_group resumed>) = ? [pid 5219] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 4 [pid 5217] memfd_create("syzkaller", 0 [pid 5219] rename("./bus", "./file2" [pid 5217] <... memfd_create resumed>) = 5 [pid 5219] <... rename resumed>) = -1 EEXIST (File exists) [pid 5217] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5215] +++ exited with 0 +++ [pid 5219] memfd_create("syzkaller", 0 [pid 5218] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5217] <... mmap resumed>) = 0x7f138d200000 [pid 5219] <... memfd_create resumed>) = 5 [pid 5218] <... openat resumed>) = 3 [pid 5217] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5216] <... creat resumed>) = 5 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5215, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5218] chdir("./bus" [pid 5216] exit_group(0 [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5219] <... mmap resumed>) = 0x7f138d200000 [pid 5218] <... chdir resumed>) = 0 [pid 5216] <... exit_group resumed>) = ? [pid 5058] <... restart_syscall resumed>) = 0 [pid 5219] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5218] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5220] close(3 [pid 5218] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5220] <... close resumed>) = 0 [pid 5058] umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5220] close(4) = 0 [pid 5220] mkdir("./bus", 0777 [pid 5218] <... symlink resumed>) = 0 [pid 5217] <... write resumed>) = 524288 [pid 5216] +++ exited with 0 +++ [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5220] <... mkdir resumed>) = 0 [pid 5218] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5220] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] <... openat resumed>) = 3 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5058] newfstatat(3, "", [pid 5060] <... restart_syscall resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(3, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5218] <... creat resumed>) = 4 [pid 5060] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5218] rename("./bus", "./file2" [pid 5060] newfstatat(3, "", [pid 5219] <... write resumed>) = 524288 [pid 5218] <... rename resumed>) = -1 EEXIST (File exists) [pid 5217] munmap(0x7f138d200000, 138412032 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5218] memfd_create("syzkaller", 0 [ 69.548694][ T5220] loop3: detected capacity change from 0 to 1024 [pid 5060] getdents64(3, [pid 5218] <... memfd_create resumed>) = 5 [pid 5217] <... munmap resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5217] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5219] munmap(0x7f138d200000, 138412032 [pid 5217] close(5 [pid 5220] <... mount resumed>) = 0 [pid 5220] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5219] <... munmap resumed>) = 0 [pid 5220] <... openat resumed>) = 3 [pid 5219] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5220] chdir("./bus" [pid 5219] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5220] <... chdir resumed>) = 0 [pid 5219] close(5 [pid 5220] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5217] <... close resumed>) = 0 [pid 5220] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5219] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5220] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5218] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5220] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5217] creat("./file1", 000 [pid 5058] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5217] <... creat resumed>) = 5 [pid 5220] <... creat resumed>) = 4 [pid 5217] exit_group(0 [pid 5058] newfstatat(AT_FDCWD, "./24/bus", [pid 5219] creat("./file1", 000 [pid 5217] <... exit_group resumed>) = ? [pid 5060] <... umount2 resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5220] rename("./bus", "./file2" [pid 5218] <... write resumed>) = 524288 [pid 5217] +++ exited with 0 +++ [pid 5060] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5220] <... rename resumed>) = -1 EEXIST (File exists) [pid 5219] <... creat resumed>) = 5 [pid 5060] newfstatat(AT_FDCWD, "./23/bus", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5220] memfd_create("syzkaller", 0 [pid 5219] exit_group(0 [pid 5220] <... memfd_create resumed>) = 5 [pid 5219] <... exit_group resumed>) = ? [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5217, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5219] +++ exited with 0 +++ [pid 5218] munmap(0x7f138d200000, 138412032 [pid 5060] umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 4 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5220] <... mmap resumed>) = 0x7f138d200000 [pid 5218] <... munmap resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5219, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(4, "", [pid 5060] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... restart_syscall resumed>) = 0 [pid 5061] umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 4 [pid 5218] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(4, "", [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5218] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5218] close(5 [pid 5061] <... openat resumed>) = 3 [pid 5060] getdents64(4, [pid 5058] getdents64(4, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5220] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] newfstatat(3, "", [pid 5060] getdents64(4, [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... openat resumed>) = 3 [pid 5056] newfstatat(3, "", [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] close(4 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5218] <... close resumed>) = 0 [pid 5061] getdents64(3, [pid 5060] <... close resumed>) = 0 [pid 5058] close(4 [pid 5056] getdents64(3, [pid 5220] <... write resumed>) = 524288 [pid 5218] creat("./file1", 000 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] rmdir("./23/bus" [pid 5058] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... rmdir resumed>) = 0 [pid 5058] rmdir("./24/bus") = 0 [pid 5061] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5220] munmap(0x7f138d200000, 138412032 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5218] <... creat resumed>) = 5 [pid 5060] newfstatat(AT_FDCWD, "./23/binderfs", [pid 5058] umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5218] exit_group(0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5220] <... munmap resumed>) = 0 [pid 5218] <... exit_group resumed>) = ? [pid 5060] unlink("./23/binderfs" [pid 5058] newfstatat(AT_FDCWD, "./24/binderfs", [pid 5220] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5218] +++ exited with 0 +++ [pid 5061] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5220] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... unlink resumed>) = 0 [pid 5220] close(5 [pid 5060] getdents64(3, [pid 5058] unlink("./24/binderfs" [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5218, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5061] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5056] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5220] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5220] creat("./file1", 000 [pid 5061] newfstatat(AT_FDCWD, "./26/bus", [pid 5060] close(3 [pid 5058] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... close resumed>) = 0 [pid 5061] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] rmdir("./23" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(AT_FDCWD, "./24/bus", [pid 5220] <... creat resumed>) = 5 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... rmdir resumed>) = 0 [pid 5058] close(3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5220] exit_group(0 [pid 5061] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5220] <... exit_group resumed>) = ? [pid 5061] <... openat resumed>) = 4 [pid 5058] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] mkdir("./24", 0777 [pid 5058] rmdir("./24" [pid 5057] newfstatat(3, "", [pid 5220] +++ exited with 0 +++ [pid 5061] newfstatat(4, "", [pid 5060] <... mkdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5061] getdents64(4, [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5220, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5058] mkdir("./25", 0777 [pid 5057] getdents64(3, [pid 5056] newfstatat(4, "", [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(4, [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] close(4 [pid 5059] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... close resumed>) = 0 [pid 5059] newfstatat(3, "", [pid 5061] rmdir("./26/bus" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5061] <... rmdir resumed>) = 0 [pid 5059] getdents64(3, [pid 5058] <... mkdir resumed>) = 0 [pid 5057] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] close(4) = 0 [pid 5061] umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./24/bus" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] newfstatat(AT_FDCWD, "./26/binderfs", [pid 5056] <... rmdir resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./26/binderfs" [pid 5056] umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... unlink resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] getdents64(3, [pid 5056] unlink("./24/binderfs" [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5056] <... unlink resumed>) = 0 [pid 5061] close(3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5061] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] getdents64(3, [pid 5061] rmdir("./26") = 0 [pid 5059] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] mkdir("./27", 0777 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./25/bus", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(AT_FDCWD, "./25/bus", [pid 5059] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(3 [pid 5059] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... openat resumed>) = 4 [pid 5056] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] rmdir("./24" [pid 5059] newfstatat(4, "", [pid 5057] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] getdents64(4, [pid 5056] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] newfstatat(4, "", [pid 5056] mkdir("./25", 0777 [pid 5059] getdents64(4, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5057] getdents64(4, [pid 5059] <... close resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... mkdir resumed>) = 0 [pid 5059] rmdir("./25/bus" [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] getdents64(4, [pid 5056] <... openat resumed>) = 3 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5059] umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] close(4 [pid 5059] newfstatat(AT_FDCWD, "./25/binderfs", [pid 5057] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] rmdir("./25/bus" [pid 5059] unlink("./25/binderfs") = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5059] close(3 [pid 5057] umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... ioctl resumed>) = 0 [pid 5059] rmdir("./25" [pid 5057] newfstatat(AT_FDCWD, "./25/binderfs", [pid 5059] <... rmdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./25/binderfs" [pid 5060] close(3) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] mkdir("./26", 0777 [pid 5061] <... ioctl resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] close(3 [pid 5057] <... unlink resumed>) = 0 [pid 5056] close(3./strace-static-x86_64: Process 5221 attached [pid 5061] close(3 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5221 [pid 5221] set_robust_list(0x555556c07660, 24 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] getdents64(3, [pid 5221] <... set_robust_list resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... close resumed>) = 0 [pid 5221] chdir("./24" [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5057] close(3 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5221] <... chdir resumed>) = 0 [pid 5221] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... close resumed>) = 0 [pid 5221] <... prctl resumed>) = 0 [pid 5221] setpgid(0, 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5222 [pid 5057] rmdir("./25" [pid 5221] <... setpgid resumed>) = 0 [pid 5221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] <... rmdir resumed>) = 0 [pid 5221] <... openat resumed>) = 3 [pid 5221] write(3, "1000", 4 [pid 5057] mkdir("./26", 0777 [pid 5221] <... write resumed>) = 4 [pid 5057] <... mkdir resumed>) = 0 [pid 5221] close(3) = 0 ./strace-static-x86_64: Process 5222 attached [pid 5221] symlink("/dev/binderfs", "./binderfs" [pid 5222] set_robust_list(0x555556c07660, 24 [pid 5221] <... symlink resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5222] <... set_robust_list resumed>) = 0 [pid 5221] memfd_create("syzkaller", 0 [pid 5057] <... openat resumed>) = 3 [pid 5222] chdir("./27" [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5221] <... memfd_create resumed>) = 3 [pid 5221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5223 attached ./strace-static-x86_64: Process 5224 attached [pid 5222] <... chdir resumed>) = 0 [pid 5221] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5224 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5223 [pid 5224] set_robust_list(0x555556c07660, 24 [pid 5223] set_robust_list(0x555556c07660, 24 [pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5221] 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"..., 524288 [pid 5224] <... set_robust_list resumed>) = 0 [pid 5223] <... set_robust_list resumed>) = 0 [pid 5222] <... prctl resumed>) = 0 [pid 5224] chdir("./25" [pid 5223] chdir("./25" [pid 5222] setpgid(0, 0 [pid 5224] <... chdir resumed>) = 0 [pid 5223] <... chdir resumed>) = 0 [pid 5224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5223] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5224] setpgid(0, 0 [pid 5223] <... prctl resumed>) = 0 [pid 5222] <... setpgid resumed>) = 0 [pid 5223] setpgid(0, 0 [pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5224] <... setpgid resumed>) = 0 [pid 5223] <... setpgid resumed>) = 0 [pid 5223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5222] <... openat resumed>) = 3 [pid 5222] write(3, "1000", 4) = 4 [pid 5224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5222] close(3 [pid 5224] <... openat resumed>) = 3 [pid 5223] <... openat resumed>) = 3 [pid 5222] <... close resumed>) = 0 [pid 5222] symlink("/dev/binderfs", "./binderfs" [pid 5223] write(3, "1000", 4 [pid 5222] <... symlink resumed>) = 0 [pid 5224] write(3, "1000", 4 [pid 5223] <... write resumed>) = 4 [pid 5222] memfd_create("syzkaller", 0 [pid 5221] <... write resumed>) = 524288 [pid 5222] <... memfd_create resumed>) = 3 [pid 5224] <... write resumed>) = 4 [pid 5223] close(3 [pid 5222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5224] close(3 [pid 5223] <... close resumed>) = 0 [pid 5222] <... mmap resumed>) = 0x7f138d200000 [pid 5224] <... close resumed>) = 0 [pid 5223] symlink("/dev/binderfs", "./binderfs" [pid 5224] symlink("/dev/binderfs", "./binderfs" [pid 5223] <... symlink resumed>) = 0 [pid 5223] memfd_create("syzkaller", 0) = 3 [pid 5221] munmap(0x7f138d200000, 138412032 [pid 5224] <... symlink resumed>) = 0 [pid 5223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5222] 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"..., 524288 [pid 5221] <... munmap resumed>) = 0 [pid 5223] <... mmap resumed>) = 0x7f138d200000 [pid 5221] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5224] memfd_create("syzkaller", 0 [pid 5221] <... openat resumed>) = 4 [pid 5224] <... memfd_create resumed>) = 3 [pid 5223] 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"..., 524288 [pid 5059] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5221] ioctl(4, LOOP_SET_FD, 3 [pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5223] <... write resumed>) = 524288 [pid 5224] <... mmap resumed>) = 0x7f138d200000 [pid 5059] close(3) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5223] munmap(0x7f138d200000, 138412032) = 0 [pid 5222] <... write resumed>) = 524288 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5225 [pid 5222] munmap(0x7f138d200000, 138412032./strace-static-x86_64: Process 5225 attached [pid 5223] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5222] <... munmap resumed>) = 0 [pid 5225] set_robust_list(0x555556c07660, 24 [pid 5224] 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"..., 524288 [pid 5225] <... set_robust_list resumed>) = 0 [pid 5223] <... openat resumed>) = 4 ./strace-static-x86_64: Process 5226 attached [pid 5222] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5226] set_robust_list(0x555556c07660, 24 [pid 5225] chdir("./26" [pid 5223] ioctl(4, LOOP_SET_FD, 3 [pid 5222] <... openat resumed>) = 4 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5226 [pid 5226] <... set_robust_list resumed>) = 0 [pid 5226] chdir("./26") = 0 [pid 5226] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5222] ioctl(4, LOOP_SET_FD, 3 [pid 5226] <... prctl resumed>) = 0 [pid 5224] <... write resumed>) = 524288 [pid 5226] setpgid(0, 0 [pid 5221] <... ioctl resumed>) = 0 [pid 5221] close(3) = 0 [pid 5221] close(4 [pid 5226] <... setpgid resumed>) = 0 [pid 5221] <... close resumed>) = 0 [pid 5226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5221] mkdir("./bus", 0777 [pid 5225] <... chdir resumed>) = 0 [pid 5221] <... mkdir resumed>) = 0 [pid 5225] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5226] <... openat resumed>) = 3 [pid 5226] write(3, "1000", 4) = 4 [pid 5226] close(3) = 0 [pid 5226] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5225] <... prctl resumed>) = 0 [pid 5221] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5225] setpgid(0, 0 [pid 5224] munmap(0x7f138d200000, 138412032 [pid 5225] <... setpgid resumed>) = 0 [pid 5225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5226] memfd_create("syzkaller", 0 [pid 5225] <... openat resumed>) = 3 [pid 5224] <... munmap resumed>) = 0 [pid 5222] <... ioctl resumed>) = 0 [pid 5225] write(3, "1000", 4 [pid 5224] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5222] close(3 [pid 5225] <... write resumed>) = 4 [pid 5224] <... openat resumed>) = 4 [ 69.894250][ T5221] loop4: detected capacity change from 0 to 1024 [ 69.915380][ T5222] loop5: detected capacity change from 0 to 1024 [ 69.920023][ T5223] loop0: detected capacity change from 0 to 1024 [pid 5226] <... memfd_create resumed>) = 3 [pid 5225] close(3 [pid 5224] ioctl(4, LOOP_SET_FD, 3 [pid 5226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5225] <... close resumed>) = 0 [pid 5222] <... close resumed>) = 0 [pid 5226] <... mmap resumed>) = 0x7f138d200000 [pid 5222] close(4 [pid 5221] <... mount resumed>) = 0 [pid 5225] symlink("/dev/binderfs", "./binderfs" [pid 5224] <... ioctl resumed>) = 0 [pid 5223] <... ioctl resumed>) = 0 [pid 5223] close(3 [pid 5224] close(3 [pid 5223] <... close resumed>) = 0 [pid 5226] 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"..., 524288 [pid 5225] <... symlink resumed>) = 0 [pid 5224] <... close resumed>) = 0 [pid 5223] close(4 [pid 5222] <... close resumed>) = 0 [pid 5221] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5224] close(4 [pid 5223] <... close resumed>) = 0 [pid 5223] mkdir("./bus", 0777 [pid 5224] <... close resumed>) = 0 [pid 5222] mkdir("./bus", 0777 [pid 5221] <... openat resumed>) = 3 [pid 5224] mkdir("./bus", 0777 [pid 5223] <... mkdir resumed>) = 0 [pid 5222] <... mkdir resumed>) = 0 [pid 5221] chdir("./bus" [pid 5223] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5221] <... chdir resumed>) = 0 [pid 5222] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5221] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5224] <... mkdir resumed>) = 0 [pid 5221] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5221] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5225] memfd_create("syzkaller", 0 [pid 5224] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5221] <... symlink resumed>) = 0 [pid 5225] <... memfd_create resumed>) = 3 [pid 5221] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5225] 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"..., 524288 [pid 5222] <... mount resumed>) = 0 [pid 5221] <... creat resumed>) = 4 [pid 5226] <... write resumed>) = 524288 [pid 5224] <... mount resumed>) = 0 [pid 5222] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5221] rename("./bus", "./file2" [pid 5224] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5222] <... openat resumed>) = 3 [pid 5222] chdir("./bus" [pid 5224] <... openat resumed>) = 3 [pid 5222] <... chdir resumed>) = 0 [pid 5224] chdir("./bus" [pid 5222] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5224] <... chdir resumed>) = 0 [pid 5222] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5224] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5222] <... symlink resumed>) = 0 [pid 5221] <... rename resumed>) = -1 EEXIST (File exists) [pid 5226] munmap(0x7f138d200000, 138412032 [pid 5224] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5221] memfd_create("syzkaller", 0 [pid 5226] <... munmap resumed>) = 0 [pid 5222] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5221] <... memfd_create resumed>) = 5 [pid 5224] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5223] <... mount resumed>) = 0 [pid 5223] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [ 69.948281][ T5224] loop2: detected capacity change from 0 to 1024 [pid 5221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5226] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5224] <... symlink resumed>) = 0 [pid 5223] <... openat resumed>) = 3 [pid 5221] <... mmap resumed>) = 0x7f138d200000 [pid 5226] <... openat resumed>) = 4 [pid 5221] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5226] ioctl(4, LOOP_SET_FD, 3 [pid 5225] <... write resumed>) = 524288 [pid 5223] chdir("./bus" [pid 5224] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5222] <... creat resumed>) = 4 [pid 5222] rename("./bus", "./file2" [pid 5223] <... chdir resumed>) = 0 [pid 5225] munmap(0x7f138d200000, 138412032 [pid 5223] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5225] <... munmap resumed>) = 0 [pid 5224] <... creat resumed>) = 4 [pid 5223] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5222] <... rename resumed>) = -1 EEXIST (File exists) [pid 5221] <... write resumed>) = 524288 [pid 5223] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5224] rename("./bus", "./file2" [pid 5222] memfd_create("syzkaller", 0) = 5 [pid 5222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5225] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5224] <... rename resumed>) = -1 EEXIST (File exists) [pid 5225] <... openat resumed>) = 4 [pid 5224] memfd_create("syzkaller", 0 [pid 5226] <... ioctl resumed>) = 0 [pid 5225] ioctl(4, LOOP_SET_FD, 3 [pid 5223] <... symlink resumed>) = 0 [pid 5222] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5221] munmap(0x7f138d200000, 138412032 [pid 5226] close(3 [pid 5222] <... write resumed>) = 524288 [pid 5221] <... munmap resumed>) = 0 [pid 5226] <... close resumed>) = 0 [pid 5226] close(4 [pid 5224] <... memfd_create resumed>) = 5 [pid 5226] <... close resumed>) = 0 [pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5221] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5224] <... mmap resumed>) = 0x7f138d200000 [pid 5223] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5221] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5221] close(5) = 0 [pid 5224] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5226] mkdir("./bus", 0777 [pid 5225] <... ioctl resumed>) = 0 [pid 5223] <... creat resumed>) = 4 [pid 5222] munmap(0x7f138d200000, 138412032 [pid 5221] creat("./file1", 000 [pid 5226] <... mkdir resumed>) = 0 [pid 5222] <... munmap resumed>) = 0 [pid 5221] <... creat resumed>) = 5 [pid 5223] rename("./bus", "./file2" [ 70.014415][ T5226] loop1: detected capacity change from 0 to 1024 [ 70.050136][ T5225] loop3: detected capacity change from 0 to 1024 [pid 5226] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5225] close(3 [pid 5224] <... write resumed>) = 524288 [pid 5222] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5221] exit_group(0 [pid 5225] <... close resumed>) = 0 [pid 5223] <... rename resumed>) = -1 EEXIST (File exists) [pid 5222] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5221] <... exit_group resumed>) = ? [pid 5225] close(4 [pid 5224] munmap(0x7f138d200000, 138412032 [pid 5223] memfd_create("syzkaller", 0 [pid 5222] close(5 [pid 5221] +++ exited with 0 +++ [pid 5225] <... close resumed>) = 0 [pid 5224] <... munmap resumed>) = 0 [pid 5223] <... memfd_create resumed>) = 5 [pid 5222] <... close resumed>) = 0 [pid 5226] <... mount resumed>) = 0 [pid 5225] mkdir("./bus", 0777 [pid 5224] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5226] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5223] <... mmap resumed>) = 0x7f138d200000 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5221, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5226] <... openat resumed>) = 3 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5226] chdir("./bus" [pid 5060] <... restart_syscall resumed>) = 0 [pid 5226] <... chdir resumed>) = 0 [pid 5226] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5222] creat("./file1", 000 [pid 5226] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5226] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5223] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5226] <... symlink resumed>) = 0 [pid 5225] <... mkdir resumed>) = 0 [pid 5224] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5226] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5222] <... creat resumed>) = 5 [pid 5060] <... openat resumed>) = 3 [pid 5222] exit_group(0 [pid 5060] newfstatat(3, "", [pid 5222] <... exit_group resumed>) = ? [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5224] close(5 [pid 5222] +++ exited with 0 +++ [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5222, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5060] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5225] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... restart_syscall resumed>) = 0 [pid 5061] umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5226] <... creat resumed>) = 4 [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5226] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5226] memfd_create("syzkaller", 0) = 5 [pid 5226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5224] <... close resumed>) = 0 [pid 5225] <... mount resumed>) = 0 [pid 5224] creat("./file1", 000 [pid 5223] <... write resumed>) = 524288 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5225] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5226] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5225] chdir("./bus" [pid 5223] munmap(0x7f138d200000, 138412032 [pid 5061] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5225] <... chdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5225] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] newfstatat(AT_FDCWD, "./24/bus", [pid 5225] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5225] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5226] <... write resumed>) = 524288 [pid 5061] newfstatat(AT_FDCWD, "./27/bus", [pid 5223] <... munmap resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 4 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(4, "", [pid 5061] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5060] getdents64(4, [pid 5061] newfstatat(4, "", [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(4, [pid 5061] getdents64(4, [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] close(4 [pid 5061] getdents64(4, [pid 5060] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] rmdir("./24/bus" [pid 5061] close(4 [pid 5060] <... rmdir resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5226] munmap(0x7f138d200000, 138412032 [pid 5061] rmdir("./27/bus" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5226] <... munmap resumed>) = 0 [pid 5225] <... symlink resumed>) = 0 [pid 5224] <... creat resumed>) = 5 [pid 5223] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... rmdir resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./24/binderfs", [pid 5061] umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5226] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5225] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5224] exit_group(0 [pid 5223] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./27/binderfs" [pid 5224] <... exit_group resumed>) = ? [pid 5061] <... unlink resumed>) = 0 [pid 5061] getdents64(3, [pid 5060] unlink("./24/binderfs" [pid 5226] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5061] close(3 [pid 5060] getdents64(3, [pid 5224] +++ exited with 0 +++ [pid 5061] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5226] close(5 [pid 5061] rmdir("./27" [pid 5060] close(3 [pid 5223] close(5 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5224, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5060] rmdir("./24" [pid 5225] <... creat resumed>) = 4 [pid 5060] <... rmdir resumed>) = 0 [pid 5225] rename("./bus", "./file2" [pid 5223] <... close resumed>) = 0 [pid 5061] mkdir("./28", 0777 [pid 5060] mkdir("./25", 0777 [pid 5058] umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5225] <... rename resumed>) = -1 EEXIST (File exists) [pid 5223] creat("./file1", 000 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5225] memfd_create("syzkaller", 0) = 5 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5226] <... close resumed>) = 0 [pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... openat resumed>) = 3 [pid 5223] <... creat resumed>) = 5 [pid 5225] <... mmap resumed>) = 0x7f138d200000 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5223] exit_group(0 [pid 5061] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5226] creat("./file1", 000 [pid 5223] <... exit_group resumed>) = ? [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5223] +++ exited with 0 +++ [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5225] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... openat resumed>) = 3 [pid 5058] getdents64(3, [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5223, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5226] <... creat resumed>) = 5 [pid 5225] <... write resumed>) = 524288 [pid 5056] <... openat resumed>) = 3 [pid 5226] exit_group(0) = ? [pid 5226] +++ exited with 0 +++ [pid 5225] munmap(0x7f138d200000, 138412032 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5226, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] getdents64(3, [pid 5057] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5225] <... munmap resumed>) = 0 [pid 5056] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5225] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... umount2 resumed>) = 0 [pid 5057] umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5225] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5225] close(5 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... ioctl resumed>) = 0 [pid 5058] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5225] <... close resumed>) = 0 [pid 5061] close(3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... close resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./25/bus", [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5225] creat("./file1", 000 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5227 attached [pid 5060] <... ioctl resumed>) = 0 [pid 5058] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./25/bus", [pid 5227] set_robust_list(0x555556c07660, 24 [pid 5225] <... creat resumed>) = 5 [pid 5227] <... set_robust_list resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5227 [pid 5058] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5227] chdir("./28" [pid 5225] exit_group(0 [pid 5058] <... openat resumed>) = 4 [pid 5056] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5227] <... chdir resumed>) = 0 [pid 5058] newfstatat(4, "", [pid 5227] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5227] <... prctl resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5227] setpgid(0, 0 [pid 5058] getdents64(4, [pid 5227] <... setpgid resumed>) = 0 [pid 5225] <... exit_group resumed>) = ? [pid 5060] close(3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... openat resumed>) = 4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./26/bus", [pid 5227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] getdents64(4, [pid 5056] newfstatat(4, "", [pid 5060] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] close(4 [pid 5056] getdents64(4, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] <... close resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] rmdir("./25/bus" [pid 5057] <... openat resumed>) = 4 [pid 5227] <... openat resumed>) = 3 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] newfstatat(4, "", [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(4, [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./25/binderfs", [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5227] write(3, "1000", 4 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5228 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] close(4 [pid 5227] <... write resumed>) = 4 [pid 5058] unlink("./25/binderfs" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... close resumed>) = 0 ./strace-static-x86_64: Process 5228 attached [pid 5227] close(3 [pid 5225] +++ exited with 0 +++ [pid 5058] <... unlink resumed>) = 0 [pid 5057] getdents64(4, [pid 5056] rmdir("./25/bus" [pid 5227] <... close resumed>) = 0 [pid 5228] set_robust_list(0x555556c07660, 24 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5228] <... set_robust_list resumed>) = 0 [pid 5057] getdents64(4, [pid 5228] chdir("./25" [pid 5227] symlink("/dev/binderfs", "./binderfs" [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5225, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5058] getdents64(3, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5227] <... symlink resumed>) = 0 [pid 5059] umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5056] umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] close(3 [pid 5057] <... close resumed>) = 0 [pid 5228] <... chdir resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... close resumed>) = 0 [pid 5057] rmdir("./26/bus" [pid 5228] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5227] memfd_create("syzkaller", 0 [pid 5059] <... openat resumed>) = 3 [pid 5058] rmdir("./25" [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5228] <... prctl resumed>) = 0 [pid 5059] newfstatat(3, "", [pid 5228] setpgid(0, 0 [pid 5057] umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5228] <... setpgid resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5227] <... memfd_create resumed>) = 3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./26/binderfs", [pid 5056] newfstatat(AT_FDCWD, "./25/binderfs", [pid 5228] <... openat resumed>) = 3 [pid 5227] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] getdents64(3, [pid 5058] mkdir("./26", 0777 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5228] write(3, "1000", 4 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] unlink("./26/binderfs" [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5228] <... write resumed>) = 4 [pid 5059] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... unlink resumed>) = 0 [pid 5056] unlink("./25/binderfs" [pid 5228] close(3 [pid 5057] getdents64(3, [pid 5228] <... close resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5228] symlink("/dev/binderfs", "./binderfs" [pid 5057] close(3 [pid 5056] <... unlink resumed>) = 0 [pid 5228] <... symlink resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5228] memfd_create("syzkaller", 0 [pid 5227] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5057] rmdir("./26" [pid 5056] getdents64(3, [pid 5228] <... memfd_create resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] mkdir("./27", 0777 [pid 5056] <... close resumed>) = 0 [pid 5228] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... mkdir resumed>) = 0 [pid 5228] 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"..., 524288 [pid 5227] 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"..., 524288 [pid 5059] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./25" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] newfstatat(AT_FDCWD, "./26/bus", [pid 5057] <... openat resumed>) = 3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5059] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... ioctl resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(3 [pid 5059] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, ./strace-static-x86_64: Process 5229 attached 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5229] set_robust_list(0x555556c07660, 24 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5229] <... set_robust_list resumed>) = 0 [pid 5059] close(4 [pid 5229] chdir("./27" [pid 5056] <... rmdir resumed>) = 0 [pid 5228] <... write resumed>) = 524288 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5229 [pid 5056] mkdir("./26", 0777 [pid 5059] <... close resumed>) = 0 [pid 5229] <... chdir resumed>) = 0 [pid 5059] rmdir("./26/bus" [pid 5229] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... rmdir resumed>) = 0 [pid 5229] <... prctl resumed>) = 0 [pid 5059] umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5229] setpgid(0, 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5229] <... setpgid resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./26/binderfs", [pid 5229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5229] <... openat resumed>) = 3 [pid 5227] <... write resumed>) = 524288 [pid 5059] unlink("./26/binderfs" [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... unlink resumed>) = 0 [pid 5229] write(3, "1000", 4 [pid 5059] getdents64(3, [pid 5229] <... write resumed>) = 4 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5229] close(3 [pid 5227] munmap(0x7f138d200000, 138412032 [pid 5059] close(3 [pid 5229] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5229] symlink("/dev/binderfs", "./binderfs" [pid 5227] <... munmap resumed>) = 0 [pid 5059] rmdir("./26" [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5229] <... symlink resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5229] memfd_create("syzkaller", 0) = 3 [pid 5228] munmap(0x7f138d200000, 138412032 [pid 5059] mkdir("./27", 0777 [pid 5229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5228] <... munmap resumed>) = 0 [pid 5229] <... mmap resumed>) = 0x7f138d200000 [pid 5228] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5227] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5229] 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"..., 524288 [pid 5228] <... openat resumed>) = 4 [pid 5227] <... openat resumed>) = 4 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] close(3 [pid 5227] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5227] close(3 [pid 5229] <... write resumed>) = 524288 [pid 5228] ioctl(4, LOOP_SET_FD, 3 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5227] <... close resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5227] close(4 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5227] <... close resumed>) = 0 [pid 5227] mkdir("./bus", 0777) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5056] close(3) = 0 ./strace-static-x86_64: Process 5230 attached [pid 5229] munmap(0x7f138d200000, 138412032 [pid 5228] <... ioctl resumed>) = 0 [pid 5227] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5228] close(3 [pid 5229] <... munmap resumed>) = 0 [pid 5228] <... close resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5230 [pid 5230] set_robust_list(0x555556c07660, 24 [pid 5228] close(4) = 0 [pid 5230] <... set_robust_list resumed>) = 0 [ 70.416640][ T5227] loop5: detected capacity change from 0 to 1024 [ 70.438949][ T5228] loop4: detected capacity change from 0 to 1024 [pid 5228] mkdir("./bus", 0777 [pid 5230] chdir("./26" [pid 5229] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5228] <... mkdir resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5228] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5230] <... chdir resumed>) = 0 [pid 5229] <... openat resumed>) = 4 [pid 5230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5231 ./strace-static-x86_64: Process 5231 attached [pid 5230] setpgid(0, 0) = 0 [pid 5231] set_robust_list(0x555556c07660, 24 [pid 5230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5231] <... set_robust_list resumed>) = 0 [pid 5231] chdir("./26") = 0 [pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5231] setpgid(0, 0) = 0 [pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5231] write(3, "1000", 4) = 4 [pid 5231] close(3) = 0 [pid 5231] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5230] <... openat resumed>) = 3 [pid 5227] <... mount resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5229] ioctl(4, LOOP_SET_FD, 3 [pid 5228] <... mount resumed>) = 0 [pid 5227] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5231] memfd_create("syzkaller", 0 [pid 5227] <... openat resumed>) = 3 [pid 5231] <... memfd_create resumed>) = 3 [pid 5227] chdir("./bus") = 0 [pid 5231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5227] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5231] <... mmap resumed>) = 0x7f138d200000 [pid 5227] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5227] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5230] write(3, "1000", 4 [pid 5228] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] close(3 [pid 5230] <... write resumed>) = 4 [pid 5228] <... openat resumed>) = 3 [pid 5227] <... symlink resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5230] close(3 [pid 5228] chdir("./bus" [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5227] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5230] <... close resumed>) = 0 [pid 5228] <... chdir resumed>) = 0 [pid 5228] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5230] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5232 [pid 5231] 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"..., 524288 [pid 5230] <... symlink resumed>) = 0 [pid 5228] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5227] <... creat resumed>) = 4 ./strace-static-x86_64: Process 5232 attached [pid 5231] <... write resumed>) = 524288 [pid 5230] memfd_create("syzkaller", 0 [pid 5229] <... ioctl resumed>) = 0 [pid 5228] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5227] rename("./bus", "./file2" [pid 5232] set_robust_list(0x555556c07660, 24 [pid 5227] <... rename resumed>) = -1 EEXIST (File exists) [pid 5232] <... set_robust_list resumed>) = 0 [pid 5230] <... memfd_create resumed>) = 3 [pid 5229] close(3 [pid 5227] memfd_create("syzkaller", 0 [pid 5230] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5229] <... close resumed>) = 0 [pid 5232] chdir("./27" [pid 5227] <... memfd_create resumed>) = 5 [pid 5229] close(4 [pid 5230] <... mmap resumed>) = 0x7f138d200000 [pid 5229] <... close resumed>) = 0 [pid 5232] <... chdir resumed>) = 0 [pid 5229] mkdir("./bus", 0777 [pid 5227] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5232] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5227] <... mmap resumed>) = 0x7f138d200000 [pid 5232] <... prctl resumed>) = 0 [pid 5229] <... mkdir resumed>) = 0 [pid 5228] <... symlink resumed>) = 0 [pid 5227] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5232] setpgid(0, 0) = 0 [pid 5232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5229] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5228] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5232] <... openat resumed>) = 3 [pid 5232] write(3, "1000", 4) = 4 [pid 5231] munmap(0x7f138d200000, 138412032 [pid 5232] close(3 [pid 5231] <... munmap resumed>) = 0 [pid 5232] <... close resumed>) = 0 [pid 5231] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5232] symlink("/dev/binderfs", "./binderfs" [pid 5231] <... openat resumed>) = 4 [pid 5232] <... symlink resumed>) = 0 [pid 5231] ioctl(4, LOOP_SET_FD, 3 [ 70.481372][ T5229] loop1: detected capacity change from 0 to 1024 [pid 5230] 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"..., 524288 [pid 5232] memfd_create("syzkaller", 0 [pid 5230] <... write resumed>) = 524288 [pid 5228] <... creat resumed>) = 4 [pid 5232] <... memfd_create resumed>) = 3 [pid 5230] munmap(0x7f138d200000, 138412032 [pid 5229] <... mount resumed>) = 0 [pid 5228] rename("./bus", "./file2" [pid 5227] <... write resumed>) = 524288 [pid 5232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5232] 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"..., 524288 [pid 5230] <... munmap resumed>) = 0 [pid 5229] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5228] <... rename resumed>) = -1 EEXIST (File exists) [pid 5227] munmap(0x7f138d200000, 138412032 [pid 5231] <... ioctl resumed>) = 0 [pid 5230] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5229] <... openat resumed>) = 3 [pid 5228] memfd_create("syzkaller", 0 [pid 5227] <... munmap resumed>) = 0 [pid 5230] <... openat resumed>) = 4 [pid 5228] <... memfd_create resumed>) = 5 [pid 5229] chdir("./bus") = 0 [pid 5227] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5231] close(3 [pid 5230] ioctl(4, LOOP_SET_FD, 3 [pid 5229] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5227] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5229] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5228] <... mmap resumed>) = 0x7f138d200000 [pid 5231] <... close resumed>) = 0 [pid 5227] close(5 [pid 5232] <... write resumed>) = 524288 [pid 5227] <... close resumed>) = 0 [pid 5231] close(4 [ 70.556397][ T5231] loop0: detected capacity change from 0 to 1024 [ 70.579396][ T5230] loop2: detected capacity change from 0 to 1024 [pid 5229] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5232] munmap(0x7f138d200000, 138412032 [pid 5231] <... close resumed>) = 0 [pid 5229] <... symlink resumed>) = 0 [pid 5228] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5227] creat("./file1", 000 [pid 5232] <... munmap resumed>) = 0 [pid 5231] mkdir("./bus", 0777 [pid 5229] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5231] <... mkdir resumed>) = 0 [pid 5231] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5232] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5229] <... creat resumed>) = 4 [pid 5232] <... openat resumed>) = 4 [pid 5229] rename("./bus", "./file2" [pid 5232] ioctl(4, LOOP_SET_FD, 3 [pid 5231] <... mount resumed>) = 0 [pid 5230] <... ioctl resumed>) = 0 [pid 5229] <... rename resumed>) = -1 EEXIST (File exists) [pid 5229] memfd_create("syzkaller", 0 [pid 5231] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5229] <... memfd_create resumed>) = 5 [pid 5231] <... openat resumed>) = 3 [pid 5230] close(3 [pid 5229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5227] <... creat resumed>) = 5 [pid 5231] chdir("./bus" [pid 5230] <... close resumed>) = 0 [pid 5229] <... mmap resumed>) = 0x7f138d200000 [pid 5227] exit_group(0 [pid 5231] <... chdir resumed>) = 0 [pid 5230] close(4 [pid 5229] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5231] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5230] <... close resumed>) = 0 [pid 5227] <... exit_group resumed>) = ? [pid 5230] mkdir("./bus", 0777 [pid 5227] +++ exited with 0 +++ [pid 5230] <... mkdir resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5227, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5231] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5230] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5228] <... write resumed>) = 524288 [pid 5232] <... ioctl resumed>) = 0 [pid 5231] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5229] <... write resumed>) = 524288 [pid 5232] close(3 [pid 5228] munmap(0x7f138d200000, 138412032) = 0 [pid 5061] umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5231] <... symlink resumed>) = 0 [pid 5232] <... close resumed>) = 0 [pid 5231] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5230] <... mount resumed>) = 0 [ 70.604779][ T5232] loop3: detected capacity change from 0 to 1024 [pid 5229] munmap(0x7f138d200000, 138412032 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5232] close(4 [pid 5229] <... munmap resumed>) = 0 [pid 5228] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5232] <... close resumed>) = 0 [pid 5228] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5229] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5230] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5232] mkdir("./bus", 0777 [pid 5231] <... creat resumed>) = 4 [pid 5228] close(5 [pid 5232] <... mkdir resumed>) = 0 [pid 5231] rename("./bus", "./file2" [pid 5230] <... openat resumed>) = 3 [pid 5061] <... openat resumed>) = 3 [pid 5232] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5231] <... rename resumed>) = -1 EEXIST (File exists) [pid 5230] chdir("./bus" [pid 5061] newfstatat(3, "", [pid 5231] memfd_create("syzkaller", 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5231] <... memfd_create resumed>) = 5 [pid 5230] <... chdir resumed>) = 0 [pid 5061] getdents64(3, [pid 5231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5230] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5231] <... mmap resumed>) = 0x7f138d200000 [pid 5230] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5229] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5228] <... close resumed>) = 0 [pid 5061] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5230] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5229] close(5 [pid 5228] creat("./file1", 000 [pid 5229] <... close resumed>) = 0 [pid 5230] <... symlink resumed>) = 0 [pid 5229] creat("./file1", 000 [pid 5231] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5228] <... creat resumed>) = 5 [pid 5230] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5228] exit_group(0) = ? [pid 5230] <... creat resumed>) = 4 [pid 5228] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5228, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5061] <... umount2 resumed>) = 0 [pid 5232] <... mount resumed>) = 0 [pid 5230] rename("./bus", "./file2" [pid 5061] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5232] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5229] <... creat resumed>) = 5 [pid 5060] umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5232] <... openat resumed>) = 3 [pid 5230] <... rename resumed>) = -1 EEXIST (File exists) [pid 5229] exit_group(0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5232] chdir("./bus" [pid 5229] <... exit_group resumed>) = ? [pid 5232] <... chdir resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5232] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5229] +++ exited with 0 +++ [pid 5232] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5230] memfd_create("syzkaller", 0 [pid 5061] newfstatat(AT_FDCWD, "./28/bus", [pid 5060] <... openat resumed>) = 3 [pid 5230] <... memfd_create resumed>) = 5 [pid 5060] newfstatat(3, "", [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5232] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5230] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5229, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5232] <... symlink resumed>) = 0 [pid 5232] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5231] <... write resumed>) = 524288 [pid 5230] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(3, [pid 5232] <... creat resumed>) = 4 [pid 5061] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5232] rename("./bus", "./file2" [pid 5231] munmap(0x7f138d200000, 138412032 [pid 5061] <... openat resumed>) = 4 [pid 5060] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5232] <... rename resumed>) = -1 EEXIST (File exists) [pid 5057] <... openat resumed>) = 3 [pid 5232] memfd_create("syzkaller", 0 [pid 5057] newfstatat(3, "", [pid 5232] <... memfd_create resumed>) = 5 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5232] <... mmap resumed>) = 0x7f138d200000 [pid 5057] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5232] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] newfstatat(4, "", [pid 5231] <... munmap resumed>) = 0 [pid 5230] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5231] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5231] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] getdents64(4, [pid 5231] close(5 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4 [pid 5232] <... write resumed>) = 524288 [pid 5061] <... close resumed>) = 0 [pid 5061] rmdir("./28/bus" [pid 5232] munmap(0x7f138d200000, 138412032) = 0 [pid 5232] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5232] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5232] close(5 [pid 5231] <... close resumed>) = 0 [pid 5230] <... write resumed>) = 524288 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = 0 [pid 5060] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./27/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5232] <... close resumed>) = 0 [pid 5057] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5232] creat("./file1", 000 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5231] creat("./file1", 000 [pid 5230] munmap(0x7f138d200000, 138412032 [pid 5061] newfstatat(AT_FDCWD, "./28/binderfs", [pid 5060] newfstatat(AT_FDCWD, "./25/bus", [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./28/binderfs" [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] getdents64(4, [pid 5230] <... munmap resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5060] umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5232] <... creat resumed>) = 5 [pid 5231] <... creat resumed>) = 5 [pid 5230] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] getdents64(3, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5232] exit_group(0 [pid 5231] exit_group(0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] close(4 [pid 5232] <... exit_group resumed>) = ? [pid 5231] <... exit_group resumed>) = ? [pid 5230] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] close(3 [pid 5060] <... openat resumed>) = 4 [pid 5057] <... close resumed>) = 0 [pid 5232] +++ exited with 0 +++ [pid 5230] close(5 [pid 5061] <... close resumed>) = 0 [pid 5060] newfstatat(4, "", [pid 5057] rmdir("./27/bus" [pid 5061] rmdir("./28" [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5232, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5057] <... rmdir resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5060] getdents64(4, [pid 5059] <... restart_syscall resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5231] +++ exited with 0 +++ [pid 5061] mkdir("./29", 0777 [pid 5060] getdents64(4, [pid 5230] <... close resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5231, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] close(4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./27/binderfs", [pid 5230] creat("./file1", 000 [pid 5061] <... openat resumed>) = 3 [pid 5060] <... close resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] rmdir("./25/bus" [pid 5059] <... openat resumed>) = 3 [pid 5057] unlink("./27/binderfs" [pid 5059] newfstatat(3, "", [pid 5057] <... unlink resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5060] umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5230] <... creat resumed>) = 5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5230] exit_group(0 [pid 5060] newfstatat(AT_FDCWD, "./25/binderfs", [pid 5056] <... openat resumed>) = 3 [pid 5230] <... exit_group resumed>) = ? [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] close(3 [pid 5056] newfstatat(3, "", [pid 5230] +++ exited with 0 +++ [pid 5060] unlink("./25/binderfs" [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5059] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] rmdir("./27" [pid 5060] getdents64(3, [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5230, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] getdents64(3, [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] newfstatat(AT_FDCWD, "./27/bus", [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5057] <... rmdir resumed>) = 0 [pid 5060] close(3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... restart_syscall resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... close resumed>) = 0 [pid 5059] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] mkdir("./28", 0777 [pid 5056] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] rmdir("./25" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... rmdir resumed>) = 0 [pid 5060] mkdir("./26", 0777) = 0 [pid 5058] umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] <... openat resumed>) = 4 [pid 5058] <... openat resumed>) = 3 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] newfstatat(4, "", [pid 5058] newfstatat(3, "", [pid 5057] <... openat resumed>) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./26/bus", [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(4, [pid 5058] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] getdents64(4, [pid 5056] <... openat resumed>) = 4 [pid 5058] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5061] <... ioctl resumed>) = 0 [pid 5059] close(4 [pid 5058] <... umount2 resumed>) = 0 [pid 5058] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./26/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5058] newfstatat(4, "", [pid 5061] close(3 [pid 5059] <... close resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... close resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5059] rmdir("./27/bus" [pid 5057] close(3 [pid 5056] close(4 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] close(3 [pid 5058] getdents64(4, [pid 5060] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... close resumed>) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./26/bus") = 0 [pid 5058] umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./26/binderfs") = 0 ./strace-static-x86_64: Process 5234 attached [pid 5059] <... rmdir resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] <... close resumed>) = 0 [pid 5056] rmdir("./26/bus" [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5233 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5234 ./strace-static-x86_64: Process 5233 attached [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5233] set_robust_list(0x555556c07660, 24 [pid 5058] close(3) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5233] <... set_robust_list resumed>) = 0 [pid 5058] rmdir("./26" [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5233] chdir("./29" [pid 5234] set_robust_list(0x555556c07660, 24 [pid 5059] umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... rmdir resumed>) = 0 [pid 5056] umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5234] <... set_robust_list resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5233] <... chdir resumed>) = 0 [pid 5233] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5234] chdir("./26" [pid 5059] newfstatat(AT_FDCWD, "./27/binderfs", [pid 5233] <... prctl resumed>) = 0 [pid 5233] setpgid(0, 0 [pid 5058] mkdir("./27", 0777 [pid 5233] <... setpgid resumed>) = 0 [pid 5233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5235 attached [pid 5234] <... chdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] unlink("./27/binderfs" [pid 5056] newfstatat(AT_FDCWD, "./26/binderfs", [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5233] <... openat resumed>) = 3 [pid 5059] <... unlink resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5235 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5235] set_robust_list(0x555556c07660, 24 [pid 5233] write(3, "1000", 4 [pid 5234] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] getdents64(3, [pid 5056] unlink("./26/binderfs" [pid 5235] <... set_robust_list resumed>) = 0 [pid 5233] <... write resumed>) = 4 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5235] chdir("./28" [pid 5233] close(3 [pid 5235] <... chdir resumed>) = 0 [pid 5233] <... close resumed>) = 0 [pid 5234] <... prctl resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5235] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5233] symlink("/dev/binderfs", "./binderfs" [pid 5056] getdents64(3, [pid 5235] <... prctl resumed>) = 0 [pid 5233] <... symlink resumed>) = 0 [pid 5234] setpgid(0, 0 [pid 5059] close(3 [pid 5235] setpgid(0, 0 [pid 5059] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5235] <... setpgid resumed>) = 0 [pid 5233] memfd_create("syzkaller", 0 [pid 5059] rmdir("./27" [pid 5056] close(3 [pid 5235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5233] <... memfd_create resumed>) = 3 [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5235] <... openat resumed>) = 3 [pid 5233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5234] <... setpgid resumed>) = 0 [pid 5059] mkdir("./28", 0777 [pid 5056] rmdir("./26" [pid 5235] write(3, "1000", 4 [pid 5233] <... mmap resumed>) = 0x7f138d200000 [pid 5234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... mkdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5235] <... write resumed>) = 4 [pid 5234] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] mkdir("./27", 0777 [pid 5235] close(3 [pid 5234] write(3, "1000", 4 [pid 5059] <... openat resumed>) = 3 [pid 5056] <... mkdir resumed>) = 0 [pid 5235] <... close resumed>) = 0 [pid 5233] 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"..., 524288 [pid 5234] <... write resumed>) = 4 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5235] symlink("/dev/binderfs", "./binderfs" [pid 5234] close(3 [pid 5056] <... openat resumed>) = 3 [pid 5234] <... close resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5234] symlink("/dev/binderfs", "./binderfs" [pid 5235] <... symlink resumed>) = 0 [pid 5234] <... symlink resumed>) = 0 [pid 5235] memfd_create("syzkaller", 0 [pid 5234] memfd_create("syzkaller", 0) = 3 [pid 5235] <... memfd_create resumed>) = 3 [pid 5234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5235] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5234] <... mmap resumed>) = 0x7f138d200000 [pid 5235] <... mmap resumed>) = 0x7f138d200000 [pid 5235] 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"..., 524288 [pid 5233] <... write resumed>) = 524288 [pid 5234] 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"..., 524288 [pid 5233] munmap(0x7f138d200000, 138412032 [pid 5058] <... ioctl resumed>) = 0 [pid 5233] <... munmap resumed>) = 0 [pid 5233] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5235] <... write resumed>) = 524288 [pid 5233] <... openat resumed>) = 4 [pid 5234] <... write resumed>) = 524288 [pid 5058] close(3 [pid 5056] <... ioctl resumed>) = 0 [pid 5233] ioctl(4, LOOP_SET_FD, 3 [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5236 attached , child_tidptr=0x555556c07650) = 5236 [pid 5236] set_robust_list(0x555556c07660, 24) = 0 [pid 5236] chdir("./27") = 0 [pid 5236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5236] setpgid(0, 0 [pid 5058] <... close resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5236] <... setpgid resumed>) = 0 [pid 5236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5059] close(3 [pid 5236] write(3, "1000", 4 [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5236] <... write resumed>) = 4 [pid 5236] close(3) = 0 [pid 5236] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5236] memfd_create("syzkaller", 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5237 [pid 5236] <... memfd_create resumed>) = 3 [pid 5236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 ./strace-static-x86_64: Process 5237 attached [pid 5235] munmap(0x7f138d200000, 138412032 [pid 5233] <... ioctl resumed>) = 0 [pid 5234] munmap(0x7f138d200000, 138412032 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5237] set_robust_list(0x555556c07660, 24 [pid 5235] <... munmap resumed>) = 0 [pid 5234] <... munmap resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5238 [pid 5236] 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"..., 524288 [pid 5235] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5233] close(3 [pid 5234] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 5238 attached [pid 5237] <... set_robust_list resumed>) = 0 [pid 5238] set_robust_list(0x555556c07660, 24 [pid 5237] chdir("./28" [pid 5235] <... openat resumed>) = 4 [pid 5233] <... close resumed>) = 0 [pid 5234] <... openat resumed>) = 4 [pid 5238] <... set_robust_list resumed>) = 0 [pid 5237] <... chdir resumed>) = 0 [pid 5235] ioctl(4, LOOP_SET_FD, 3 [pid 5233] close(4 [ 70.951333][ T5233] loop5: detected capacity change from 0 to 1024 [pid 5234] ioctl(4, LOOP_SET_FD, 3 [pid 5238] chdir("./27" [pid 5237] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5238] <... chdir resumed>) = 0 [pid 5237] <... prctl resumed>) = 0 [pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5237] setpgid(0, 0 [pid 5238] <... prctl resumed>) = 0 [pid 5237] <... setpgid resumed>) = 0 [pid 5238] setpgid(0, 0 [pid 5237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5238] <... setpgid resumed>) = 0 [pid 5237] <... openat resumed>) = 3 [pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5237] write(3, "1000", 4 [pid 5238] write(3, "1000", 4 [pid 5237] <... write resumed>) = 4 [pid 5238] <... write resumed>) = 4 [pid 5237] close(3 [pid 5236] <... write resumed>) = 524288 [pid 5233] <... close resumed>) = 0 [pid 5238] close(3 [pid 5237] <... close resumed>) = 0 [pid 5238] <... close resumed>) = 0 [pid 5237] symlink("/dev/binderfs", "./binderfs" [pid 5238] symlink("/dev/binderfs", "./binderfs" [pid 5237] <... symlink resumed>) = 0 [pid 5238] <... symlink resumed>) = 0 [pid 5237] memfd_create("syzkaller", 0) = 3 [pid 5238] memfd_create("syzkaller", 0 [pid 5237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5238] <... memfd_create resumed>) = 3 [pid 5237] <... mmap resumed>) = 0x7f138d200000 [pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5236] munmap(0x7f138d200000, 138412032 [pid 5237] 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"..., 524288 [pid 5235] <... ioctl resumed>) = 0 [pid 5233] mkdir("./bus", 0777 [pid 5234] <... ioctl resumed>) = 0 [pid 5236] <... munmap resumed>) = 0 [pid 5236] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5233] <... mkdir resumed>) = 0 [pid 5236] <... openat resumed>) = 4 [pid 5233] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "") = 0 [pid 5233] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5234] close(3 [ 70.994033][ T5234] loop4: detected capacity change from 0 to 1024 [ 71.001070][ T5235] loop1: detected capacity change from 0 to 1024 [pid 5236] ioctl(4, LOOP_SET_FD, 3 [pid 5235] close(3 [pid 5233] <... openat resumed>) = 3 [pid 5234] <... close resumed>) = 0 [pid 5234] close(4 [pid 5235] <... close resumed>) = 0 [pid 5233] chdir("./bus" [pid 5238] 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"..., 524288 [pid 5237] <... write resumed>) = 524288 [pid 5235] close(4 [pid 5233] <... chdir resumed>) = 0 [pid 5234] <... close resumed>) = 0 [pid 5238] <... write resumed>) = 524288 [pid 5235] <... close resumed>) = 0 [pid 5233] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5234] mkdir("./bus", 0777 [pid 5235] mkdir("./bus", 0777 [pid 5233] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5237] munmap(0x7f138d200000, 138412032) = 0 [pid 5233] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5234] <... mkdir resumed>) = 0 [pid 5237] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5235] <... mkdir resumed>) = 0 [pid 5234] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5237] ioctl(4, LOOP_SET_FD, 3 [pid 5236] <... ioctl resumed>) = 0 [pid 5236] close(3 [pid 5235] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5233] <... symlink resumed>) = 0 [pid 5234] <... mount resumed>) = 0 [pid 5238] munmap(0x7f138d200000, 138412032 [pid 5233] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5234] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5238] <... munmap resumed>) = 0 [pid 5236] <... close resumed>) = 0 [pid 5234] <... openat resumed>) = 3 [ 71.037059][ T5236] loop0: detected capacity change from 0 to 1024 [ 71.062599][ T5237] loop3: detected capacity change from 0 to 1024 [pid 5236] close(4) = 0 [pid 5234] chdir("./bus" [pid 5236] mkdir("./bus", 0777 [pid 5234] <... chdir resumed>) = 0 [pid 5236] <... mkdir resumed>) = 0 [pid 5236] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5238] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5236] <... mount resumed>) = 0 [pid 5236] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5234] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5236] <... openat resumed>) = 3 [pid 5236] chdir("./bus" [pid 5234] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5238] <... openat resumed>) = 4 [pid 5236] <... chdir resumed>) = 0 [pid 5234] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5238] ioctl(4, LOOP_SET_FD, 3 [pid 5236] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5236] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5236] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5234] <... symlink resumed>) = 0 [pid 5237] <... ioctl resumed>) = 0 [pid 5235] <... mount resumed>) = 0 [pid 5233] <... creat resumed>) = 4 [pid 5234] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5237] close(3 [pid 5235] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5233] rename("./bus", "./file2" [pid 5237] <... close resumed>) = 0 [pid 5237] close(4) = 0 [pid 5236] <... creat resumed>) = 4 [pid 5235] <... openat resumed>) = 3 [pid 5233] <... rename resumed>) = -1 EEXIST (File exists) [pid 5235] chdir("./bus" [pid 5237] mkdir("./bus", 0777 [pid 5236] rename("./bus", "./file2" [pid 5233] memfd_create("syzkaller", 0 [pid 5235] <... chdir resumed>) = 0 [pid 5237] <... mkdir resumed>) = 0 [pid 5235] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5237] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "") = 0 [pid 5236] <... rename resumed>) = -1 EEXIST (File exists) [pid 5234] <... creat resumed>) = 4 [pid 5233] <... memfd_create resumed>) = 5 [pid 5238] <... ioctl resumed>) = 0 [pid 5237] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5236] memfd_create("syzkaller", 0 [pid 5235] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5238] close(3 [pid 5237] <... openat resumed>) = 3 [pid 5236] <... memfd_create resumed>) = 5 [pid 5235] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5234] rename("./bus", "./file2" [pid 5238] <... close resumed>) = 0 [pid 5237] chdir("./bus" [pid 5236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5233] <... mmap resumed>) = 0x7f138d200000 [pid 5238] close(4 [pid 5237] <... chdir resumed>) = 0 [pid 5236] <... mmap resumed>) = 0x7f138d200000 [pid 5238] <... close resumed>) = 0 [pid 5237] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5236] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5233] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5234] <... rename resumed>) = -1 EEXIST (File exists) [pid 5238] mkdir("./bus", 0777 [pid 5237] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5235] <... symlink resumed>) = 0 [pid 5237] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5234] memfd_create("syzkaller", 0) = 5 [ 71.083265][ T5238] loop2: detected capacity change from 0 to 1024 [pid 5237] <... symlink resumed>) = 0 [pid 5235] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5237] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 4 [pid 5234] <... mmap resumed>) = 0x7f138d200000 [pid 5237] rename("./bus", "./file2" [pid 5236] <... write resumed>) = 524288 [pid 5234] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5237] <... rename resumed>) = -1 EEXIST (File exists) [pid 5235] <... creat resumed>) = 4 [pid 5237] memfd_create("syzkaller", 0 [pid 5235] rename("./bus", "./file2" [pid 5237] <... memfd_create resumed>) = 5 [pid 5237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5238] <... mkdir resumed>) = 0 [pid 5238] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5235] <... rename resumed>) = -1 EEXIST (File exists) [pid 5233] <... write resumed>) = 524288 [pid 5237] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5236] munmap(0x7f138d200000, 138412032 [pid 5235] memfd_create("syzkaller", 0 [pid 5238] <... mount resumed>) = 0 [pid 5236] <... munmap resumed>) = 0 [pid 5235] <... memfd_create resumed>) = 5 [pid 5238] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5238] chdir("./bus") = 0 [pid 5238] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5236] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5238] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5236] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5235] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5233] munmap(0x7f138d200000, 138412032 [pid 5238] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5234] <... write resumed>) = 524288 [pid 5235] <... mmap resumed>) = 0x7f138d200000 [pid 5234] munmap(0x7f138d200000, 138412032 [pid 5237] <... write resumed>) = 524288 [pid 5234] <... munmap resumed>) = 0 [pid 5235] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5238] <... symlink resumed>) = 0 [pid 5237] munmap(0x7f138d200000, 138412032 [pid 5236] close(5 [pid 5233] <... munmap resumed>) = 0 [pid 5234] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5238] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5237] <... munmap resumed>) = 0 [pid 5236] <... close resumed>) = 0 [pid 5233] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5234] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5238] <... creat resumed>) = 4 [pid 5234] close(5 [pid 5233] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5238] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5235] <... write resumed>) = 524288 [pid 5233] close(5 [pid 5238] memfd_create("syzkaller", 0 [pid 5237] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5238] <... memfd_create resumed>) = 5 [pid 5237] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5237] close(5 [pid 5238] <... mmap resumed>) = 0x7f138d200000 [pid 5237] <... close resumed>) = 0 [pid 5236] creat("./file1", 000 [pid 5233] <... close resumed>) = 0 [pid 5238] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5235] munmap(0x7f138d200000, 138412032 [pid 5234] <... close resumed>) = 0 [pid 5235] <... munmap resumed>) = 0 [pid 5237] creat("./file1", 000 [pid 5236] <... creat resumed>) = 5 [pid 5233] creat("./file1", 000 [pid 5234] creat("./file1", 000 [pid 5236] exit_group(0) = ? [pid 5236] +++ exited with 0 +++ [pid 5234] <... creat resumed>) = 5 [pid 5234] exit_group(0 [pid 5233] <... creat resumed>) = 5 [pid 5234] <... exit_group resumed>) = ? [pid 5238] <... write resumed>) = 524288 [pid 5237] <... creat resumed>) = 5 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5236, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=2 /* 0.02 s */} --- [pid 5238] munmap(0x7f138d200000, 138412032 [pid 5237] exit_group(0 [pid 5056] umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5238] <... munmap resumed>) = 0 [pid 5237] <... exit_group resumed>) = ? [pid 5235] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5233] exit_group(0 [pid 5237] +++ exited with 0 +++ [pid 5234] +++ exited with 0 +++ [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5238] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5235] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5233] <... exit_group resumed>) = ? [pid 5056] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5238] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5234, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5237, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5238] close(5 [pid 5060] umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5056] <... openat resumed>) = 3 [pid 5238] <... close resumed>) = 0 [pid 5235] close(5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... restart_syscall resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] newfstatat(3, "", [pid 5060] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5233] +++ exited with 0 +++ [pid 5060] newfstatat(3, "", [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5233, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5060] getdents64(3, [pid 5056] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... restart_syscall resumed>) = 0 [pid 5238] creat("./file1", 000 [pid 5061] umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5061] newfstatat(3, "", [pid 5060] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... openat resumed>) = 3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(3, "", [pid 5061] getdents64(3, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5238] <... creat resumed>) = 5 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] getdents64(3, [pid 5238] exit_group(0 [pid 5235] <... close resumed>) = 0 [pid 5061] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... umount2 resumed>) = 0 [pid 5238] <... exit_group resumed>) = ? [pid 5059] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5238] +++ exited with 0 +++ [pid 5235] creat("./file1", 000 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5056] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5238, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./27/bus", [pid 5060] newfstatat(AT_FDCWD, "./26/bus", [pid 5058] umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5056] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5235] <... creat resumed>) = 5 [pid 5060] <... openat resumed>) = 4 [pid 5058] getdents64(3, [pid 5056] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] newfstatat(4, "", [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5235] exit_group(0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... openat resumed>) = 4 [pid 5061] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./29/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(AT_FDCWD, "./28/bus", [pid 5061] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(4, [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] close(4 [pid 5059] <... openat resumed>) = 4 [pid 5235] <... exit_group resumed>) = ? [pid 5061] <... close resumed>) = 0 [pid 5059] newfstatat(4, "", [pid 5056] newfstatat(4, "", [pid 5061] rmdir("./29/bus" [pid 5060] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] getdents64(4, [pid 5061] umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5235] +++ exited with 0 +++ [pid 5059] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] rmdir("./28/bus" [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(4, [pid 5059] <... rmdir resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5235, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5061] newfstatat(AT_FDCWD, "./29/binderfs", [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(4, [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] close(4 [pid 5059] umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] unlink("./29/binderfs" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... unlink resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./28/binderfs", [pid 5057] <... openat resumed>) = 3 [pid 5061] getdents64(3, [pid 5060] rmdir("./26/bus" [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(3, "", [pid 5056] getdents64(4, [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] unlink("./28/binderfs" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] close(3 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] close(4 [pid 5061] rmdir("./29" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(3, [pid 5057] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... close resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./26/binderfs", [pid 5058] <... umount2 resumed>) = 0 [pid 5056] rmdir("./27/bus" [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./26/binderfs" [pid 5059] close(3 [pid 5058] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5061] mkdir("./30", 0777 [pid 5060] <... unlink resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5056] umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(3, [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] newfstatat(AT_FDCWD, "./27/bus", [pid 5056] newfstatat(AT_FDCWD, "./27/binderfs", [pid 5059] rmdir("./28" [pid 5060] close(3 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5058] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5056] unlink("./27/binderfs" [pid 5060] rmdir("./26" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] mkdir("./29", 0777 [pid 5057] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... unlink resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5060] mkdir("./27", 0777 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... openat resumed>) = 4 [pid 5056] getdents64(3, [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] <... mkdir resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5058] newfstatat(4, "", [pid 5057] newfstatat(AT_FDCWD, "./28/bus", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] close(3 [pid 5060] <... openat resumed>) = 3 [pid 5058] getdents64(4, [pid 5056] <... close resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./27" [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] close(4 [pid 5057] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5058] rmdir("./27/bus" [pid 5056] <... rmdir resumed>) = 0 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5058] <... rmdir resumed>) = 0 [pid 5056] mkdir("./28", 0777 [pid 5058] umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./28/bus") = 0 [pid 5057] umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... mkdir resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./27/binderfs", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(AT_FDCWD, "./28/binderfs", [pid 5056] <... openat resumed>) = 3 [pid 5058] unlink("./27/binderfs" [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5057] unlink("./28/binderfs" [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5058] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5057] <... unlink resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./27" [pid 5057] getdents64(3, [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] mkdir("./28", 0777 [pid 5057] close(3) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] rmdir("./28" [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... rmdir resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5057] mkdir("./29", 0777 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5059] <... ioctl resumed>) = 0 [pid 5059] close(3) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556c07650) = 5239 ./strace-static-x86_64: Process 5239 attached [pid 5239] set_robust_list(0x555556c07660, 24) = 0 [pid 5239] chdir("./29") = 0 [pid 5239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5239] setpgid(0, 0) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5239] write(3, "1000", 4) = 4 [pid 5239] close(3) = 0 [pid 5239] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5239] memfd_create("syzkaller", 0) = 3 [pid 5239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5060] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5239] 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"..., 524288 [pid 5058] <... ioctl resumed>) = 0 [pid 5061] close(3 [pid 5060] close(3 [pid 5056] <... ioctl resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5239] <... write resumed>) = 524288 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] close(3 [pid 5057] close(3 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5240 [pid 5058] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5240 attached [pid 5240] set_robust_list(0x555556c07660, 24) = 0 [pid 5240] chdir("./27"./strace-static-x86_64: Process 5241 attached ) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5241 [pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5240] setpgid(0, 0) = 0 [pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5239] munmap(0x7f138d200000, 138412032 [pid 5240] <... openat resumed>) = 3 [pid 5239] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 5244 attached [pid 5240] write(3, "1000", 4 [pid 5244] set_robust_list(0x555556c07660, 24 [pid 5241] set_robust_list(0x555556c07660, 24 [pid 5240] <... write resumed>) = 4 [pid 5241] <... set_robust_list resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5244 [pid 5244] <... set_robust_list resumed>) = 0 [pid 5240] close(3 [pid 5239] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5240] <... close resumed>) = 0 [pid 5239] <... openat resumed>) = 4 [pid 5241] chdir("./30" [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5242 [pid 5241] <... chdir resumed>) = 0 [pid 5241] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5242 attached ) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5243 [pid 5240] symlink("/dev/binderfs", "./binderfs" [pid 5239] ioctl(4, LOOP_SET_FD, 3 [pid 5242] set_robust_list(0x555556c07660, 24 [pid 5244] chdir("./29" [pid 5241] setpgid(0, 0 [pid 5240] <... symlink resumed>) = 0 [pid 5239] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5243 attached [pid 5244] <... chdir resumed>) = 0 [pid 5242] <... set_robust_list resumed>) = 0 [pid 5243] set_robust_list(0x555556c07660, 24 [pid 5242] chdir("./28" [pid 5244] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5241] <... setpgid resumed>) = 0 [pid 5240] memfd_create("syzkaller", 0 [pid 5241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5242] <... chdir resumed>) = 0 [pid 5244] <... prctl resumed>) = 0 [pid 5240] <... memfd_create resumed>) = 3 [pid 5243] <... set_robust_list resumed>) = 0 [pid 5242] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5244] setpgid(0, 0 [pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5242] <... prctl resumed>) = 0 [pid 5243] chdir("./28" [pid 5242] setpgid(0, 0 [pid 5244] <... setpgid resumed>) = 0 [pid 5241] <... openat resumed>) = 3 [pid 5240] <... mmap resumed>) = 0x7f138d200000 [pid 5243] <... chdir resumed>) = 0 [pid 5242] <... setpgid resumed>) = 0 [pid 5244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5241] write(3, "1000", 4 [pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5244] <... openat resumed>) = 3 [pid 5241] <... write resumed>) = 4 [pid 5243] <... prctl resumed>) = 0 [pid 5241] close(3 [pid 5243] setpgid(0, 0 [pid 5242] <... openat resumed>) = 3 [pid 5244] write(3, "1000", 4 [pid 5241] <... close resumed>) = 0 [pid 5240] 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"..., 524288 [pid 5243] <... setpgid resumed>) = 0 [pid 5242] write(3, "1000", 4 [pid 5244] <... write resumed>) = 4 [pid 5241] symlink("/dev/binderfs", "./binderfs" [pid 5243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5244] close(3) = 0 [pid 5239] close(3 [pid 5244] symlink("/dev/binderfs", "./binderfs" [pid 5239] <... close resumed>) = 0 [pid 5243] <... openat resumed>) = 3 [pid 5242] <... write resumed>) = 4 [pid 5244] <... symlink resumed>) = 0 [pid 5241] <... symlink resumed>) = 0 [pid 5239] close(4 [pid 5242] close(3 [pid 5239] <... close resumed>) = 0 [pid 5242] <... close resumed>) = 0 [pid 5244] memfd_create("syzkaller", 0 [pid 5239] mkdir("./bus", 0777 [pid 5243] write(3, "1000", 4 [pid 5242] symlink("/dev/binderfs", "./binderfs" [pid 5244] <... memfd_create resumed>) = 3 [pid 5241] memfd_create("syzkaller", 0 [pid 5239] <... mkdir resumed>) = 0 [pid 5243] <... write resumed>) = 4 [pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5240] <... write resumed>) = 524288 [pid 5239] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5243] close(3 [pid 5242] <... symlink resumed>) = 0 [pid 5244] <... mmap resumed>) = 0x7f138d200000 [pid 5243] <... close resumed>) = 0 [pid 5243] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5242] memfd_create("syzkaller", 0 [pid 5244] 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"..., 524288 [pid 5241] <... memfd_create resumed>) = 3 [pid 5241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5243] memfd_create("syzkaller", 0 [pid 5240] munmap(0x7f138d200000, 138412032 [pid 5242] <... memfd_create resumed>) = 3 [pid 5240] <... munmap resumed>) = 0 [pid 5243] <... memfd_create resumed>) = 3 [pid 5243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5240] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5240] <... openat resumed>) = 4 [ 71.418776][ T5239] loop3: detected capacity change from 0 to 1024 [pid 5243] 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"..., 524288 [pid 5242] <... mmap resumed>) = 0x7f138d200000 [pid 5241] 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"..., 524288 [pid 5240] ioctl(4, LOOP_SET_FD, 3 [pid 5244] <... write resumed>) = 524288 [pid 5243] <... write resumed>) = 524288 [pid 5242] 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"..., 524288 [pid 5244] munmap(0x7f138d200000, 138412032) = 0 [pid 5239] <... mount resumed>) = 0 [pid 5244] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5239] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5244] <... openat resumed>) = 4 [pid 5239] <... openat resumed>) = 3 [pid 5239] chdir("./bus") = 0 [pid 5239] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [ 71.482830][ T5240] loop4: detected capacity change from 0 to 1024 [pid 5243] munmap(0x7f138d200000, 138412032 [pid 5242] <... write resumed>) = 524288 [pid 5244] ioctl(4, LOOP_SET_FD, 3 [pid 5241] <... write resumed>) = 524288 [pid 5239] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5241] munmap(0x7f138d200000, 138412032 [pid 5243] <... munmap resumed>) = 0 [pid 5240] <... ioctl resumed>) = 0 [pid 5240] close(3) = 0 [pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5244] <... ioctl resumed>) = 0 [pid 5241] <... munmap resumed>) = 0 [pid 5240] close(4 [pid 5243] <... openat resumed>) = 4 [pid 5241] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5243] ioctl(4, LOOP_SET_FD, 3 [pid 5242] munmap(0x7f138d200000, 138412032 [pid 5241] <... openat resumed>) = 4 [pid 5240] <... close resumed>) = 0 [pid 5239] <... symlink resumed>) = 0 [pid 5242] <... munmap resumed>) = 0 [pid 5241] ioctl(4, LOOP_SET_FD, 3 [pid 5242] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5240] mkdir("./bus", 0777 [pid 5239] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5242] ioctl(4, LOOP_SET_FD, 3 [pid 5240] <... mkdir resumed>) = 0 [pid 5240] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5242] <... ioctl resumed>) = 0 [pid 5239] <... creat resumed>) = 4 [pid 5242] close(3 [pid 5239] rename("./bus", "./file2" [pid 5242] <... close resumed>) = 0 [pid 5239] <... rename resumed>) = -1 EEXIST (File exists) [pid 5242] close(4) = 0 [pid 5244] close(3 [pid 5241] <... ioctl resumed>) = 0 [pid 5239] memfd_create("syzkaller", 0) = 5 [pid 5242] mkdir("./bus", 0777 [pid 5241] close(3 [pid 5244] <... close resumed>) = 0 [pid 5239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5244] close(4 [pid 5239] <... mmap resumed>) = 0x7f138d200000 [pid 5242] <... mkdir resumed>) = 0 [pid 5244] <... close resumed>) = 0 [pid 5241] <... close resumed>) = 0 [pid 5239] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5241] close(4 [pid 5244] mkdir("./bus", 0777) = 0 [pid 5241] <... close resumed>) = 0 [pid 5244] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5241] mkdir("./bus", 0777 [pid 5242] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5241] <... mkdir resumed>) = 0 [ 71.528882][ T5244] loop1: detected capacity change from 0 to 1024 [ 71.548694][ T5241] loop5: detected capacity change from 0 to 1024 [ 71.549017][ T5243] loop0: detected capacity change from 0 to 1024 [ 71.566543][ T5242] loop2: detected capacity change from 0 to 1024 [pid 5241] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5240] <... mount resumed>) = 0 [pid 5244] <... mount resumed>) = 0 [pid 5240] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5244] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5240] <... openat resumed>) = 3 [pid 5244] <... openat resumed>) = 3 [pid 5240] chdir("./bus" [pid 5244] chdir("./bus" [pid 5240] <... chdir resumed>) = 0 [pid 5244] <... chdir resumed>) = 0 [pid 5240] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5243] <... ioctl resumed>) = 0 [pid 5244] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5240] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5243] close(3 [pid 5244] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5243] <... close resumed>) = 0 [pid 5244] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5240] <... symlink resumed>) = 0 [pid 5239] <... write resumed>) = 524288 [pid 5243] close(4) = 0 [pid 5244] <... symlink resumed>) = 0 [pid 5240] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5243] mkdir("./bus", 0777 [pid 5244] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5243] <... mkdir resumed>) = 0 [pid 5240] <... creat resumed>) = 4 [pid 5240] rename("./bus", "./file2" [pid 5243] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5239] munmap(0x7f138d200000, 138412032 [pid 5242] <... mount resumed>) = 0 [pid 5244] <... creat resumed>) = 4 [pid 5240] <... rename resumed>) = -1 EEXIST (File exists) [pid 5239] <... munmap resumed>) = 0 [pid 5242] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5243] <... mount resumed>) = 0 [pid 5242] <... openat resumed>) = 3 [pid 5244] rename("./bus", "./file2" [pid 5240] memfd_create("syzkaller", 0 [pid 5243] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5242] chdir("./bus" [pid 5244] <... rename resumed>) = -1 EEXIST (File exists) [pid 5240] <... memfd_create resumed>) = 5 [pid 5239] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5243] <... openat resumed>) = 3 [pid 5242] <... chdir resumed>) = 0 [pid 5244] memfd_create("syzkaller", 0 [pid 5241] <... mount resumed>) = 0 [pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5239] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5243] chdir("./bus" [pid 5242] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5244] <... memfd_create resumed>) = 5 [pid 5241] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5240] <... mmap resumed>) = 0x7f138d200000 [pid 5243] <... chdir resumed>) = 0 [pid 5242] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5241] <... openat resumed>) = 3 [pid 5239] close(5 [pid 5241] chdir("./bus") = 0 [pid 5242] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5241] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5239] <... close resumed>) = 0 [pid 5243] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5244] <... mmap resumed>) = 0x7f138d200000 [pid 5243] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5242] <... symlink resumed>) = 0 [pid 5241] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5240] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5242] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5241] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5243] <... symlink resumed>) = 0 [pid 5241] <... symlink resumed>) = 0 [pid 5243] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5244] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5241] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5239] creat("./file1", 000 [pid 5242] <... creat resumed>) = 4 [pid 5244] <... write resumed>) = 524288 [pid 5241] <... creat resumed>) = 4 [pid 5242] rename("./bus", "./file2" [pid 5243] <... creat resumed>) = 4 [pid 5242] <... rename resumed>) = -1 EEXIST (File exists) [pid 5241] rename("./bus", "./file2" [pid 5243] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5242] memfd_create("syzkaller", 0 [pid 5241] <... rename resumed>) = -1 EEXIST (File exists) [pid 5240] <... write resumed>) = 524288 [pid 5239] <... creat resumed>) = 5 [pid 5243] memfd_create("syzkaller", 0 [pid 5242] <... memfd_create resumed>) = 5 [pid 5241] memfd_create("syzkaller", 0 [pid 5239] exit_group(0 [pid 5243] <... memfd_create resumed>) = 5 [pid 5242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5241] <... memfd_create resumed>) = 5 [pid 5240] munmap(0x7f138d200000, 138412032 [pid 5239] <... exit_group resumed>) = ? [pid 5243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5242] <... mmap resumed>) = 0x7f138d200000 [pid 5241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5240] <... munmap resumed>) = 0 [pid 5244] munmap(0x7f138d200000, 138412032 [pid 5239] +++ exited with 0 +++ [pid 5243] <... mmap resumed>) = 0x7f138d200000 [pid 5244] <... munmap resumed>) = 0 [pid 5243] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5244] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5240] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5244] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5240] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5244] close(5) = 0 [pid 5241] <... mmap resumed>) = 0x7f138d200000 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5239, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5241] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5240] close(5 [pid 5242] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5243] <... write resumed>) = 524288 [pid 5242] <... write resumed>) = 524288 [pid 5241] <... write resumed>) = 524288 [pid 5240] <... close resumed>) = 0 [pid 5059] umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5244] creat("./file1", 000 [pid 5240] creat("./file1", 000 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5242] munmap(0x7f138d200000, 138412032 [pid 5241] munmap(0x7f138d200000, 138412032 [pid 5059] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5243] munmap(0x7f138d200000, 138412032 [pid 5244] <... creat resumed>) = 5 [pid 5241] <... munmap resumed>) = 0 [pid 5240] <... creat resumed>) = 5 [pid 5059] <... openat resumed>) = 3 [pid 5244] exit_group(0 [pid 5240] exit_group(0 [pid 5242] <... munmap resumed>) = 0 [pid 5244] <... exit_group resumed>) = ? [pid 5240] <... exit_group resumed>) = ? [pid 5059] newfstatat(3, "", [pid 5244] +++ exited with 0 +++ [pid 5241] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5240] +++ exited with 0 +++ [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5244, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5242] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] getdents64(3, [pid 5243] <... munmap resumed>) = 0 [pid 5242] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5241] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5242] close(5 [pid 5241] close(5 [pid 5059] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5240, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5057] umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5243] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5243] close(5 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5241] <... close resumed>) = 0 [pid 5241] creat("./file1", 000 [pid 5057] <... openat resumed>) = 3 [pid 5060] umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", [pid 5242] <... close resumed>) = 0 [pid 5242] creat("./file1", 000 [pid 5060] newfstatat(3, "", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5243] <... close resumed>) = 0 [pid 5241] <... creat resumed>) = 5 [pid 5057] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = 0 [pid 5243] creat("./file1", 000 [pid 5242] <... creat resumed>) = 5 [pid 5241] exit_group(0 [pid 5242] exit_group(0 [pid 5241] <... exit_group resumed>) = ? [pid 5242] <... exit_group resumed>) = ? [pid 5241] +++ exited with 0 +++ [pid 5060] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5243] <... creat resumed>) = 5 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5241, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5243] exit_group(0 [pid 5060] newfstatat(AT_FDCWD, "./27/bus", [pid 5243] <... exit_group resumed>) = ? [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5243] +++ exited with 0 +++ [pid 5060] umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5243, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5060] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5242] +++ exited with 0 +++ [pid 5060] <... openat resumed>) = 4 [pid 5061] umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(4, "", [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5242, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] getdents64(4, [pid 5056] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... openat resumed>) = 3 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5061] newfstatat(3, "", [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(3, "", [pid 5060] close(4 [pid 5058] umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5060] rmdir("./27/bus" [pid 5058] newfstatat(3, "", [pid 5057] newfstatat(AT_FDCWD, "./29/bus", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(3, [pid 5059] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(3, [pid 5057] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./29/bus", [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(AT_FDCWD, "./27/binderfs", [pid 5058] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./27/binderfs" [pid 5057] <... openat resumed>) = 4 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5059] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(4, "", [pid 5059] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] getdents64(3, [pid 5059] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] newfstatat(4, "", [pid 5057] getdents64(4, [pid 5056] newfstatat(AT_FDCWD, "./28/bus", [pid 5061] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] close(3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... close resumed>) = 0 [pid 5059] getdents64(4, [pid 5057] getdents64(4, [pid 5056] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(4, [pid 5058] <... umount2 resumed>) = 0 [pid 5057] close(4 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] close(4 [pid 5057] <... close resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./30/bus", [pid 5060] rmdir("./27" [pid 5059] <... close resumed>) = 0 [pid 5057] rmdir("./29/bus" [pid 5056] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] rmdir("./29/bus" [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5061] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] mkdir("./28", 0777 [pid 5056] newfstatat(4, "", [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... mkdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... openat resumed>) = 4 [pid 5059] umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./28/bus", [pid 5057] newfstatat(AT_FDCWD, "./29/binderfs", [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] newfstatat(AT_FDCWD, "./29/binderfs", [pid 5058] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] unlink("./29/binderfs" [pid 5061] newfstatat(4, "", [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(4, [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] unlink("./29/binderfs" [pid 5058] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... unlink resumed>) = 0 [pid 5061] getdents64(4, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(3, [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... openat resumed>) = 4 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] newfstatat(4, "", [pid 5061] close(4 [pid 5057] close(3 [pid 5061] <... close resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] rmdir("./30/bus" [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] getdents64(3, [pid 5057] <... close resumed>) = 0 [pid 5058] getdents64(4, [pid 5056] getdents64(4, [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] rmdir("./29" [pid 5061] umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./30/binderfs", [pid 5059] close(3 [pid 5058] getdents64(4, [pid 5057] <... rmdir resumed>) = 0 [pid 5056] close(4 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] close(4 [pid 5057] mkdir("./30", 0777 [pid 5056] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] rmdir("./29" [pid 5058] <... close resumed>) = 0 [pid 5056] rmdir("./28/bus" [pid 5058] rmdir("./28/bus" [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5058] <... rmdir resumed>) = 0 [pid 5061] unlink("./30/binderfs") = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... close resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] rmdir("./30") = 0 [pid 5056] newfstatat(AT_FDCWD, "./28/binderfs", [pid 5060] close(3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... close resumed>) = 0 [pid 5056] unlink("./28/binderfs" [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... unlink resumed>) = 0 [pid 5061] mkdir("./31", 0777./strace-static-x86_64: Process 5245 attached ) = 0 [pid 5056] getdents64(3, [pid 5245] set_robust_list(0x555556c07660, 24 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5245] <... set_robust_list resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5056] <... close resumed>) = 0 [pid 5245] chdir("./28" [pid 5061] <... openat resumed>) = 3 [pid 5056] rmdir("./28" [pid 5245] <... chdir resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5245 [pid 5056] <... rmdir resumed>) = 0 [pid 5245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5245] setpgid(0, 0 [pid 5059] mkdir("./30", 0777 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] mkdir("./29", 0777 [pid 5058] newfstatat(AT_FDCWD, "./28/binderfs", [pid 5245] <... setpgid resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] unlink("./28/binderfs") = 0 [pid 5058] getdents64(3, [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5058] close(3 [pid 5245] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5245] write(3, "1000", 4 [pid 5058] rmdir("./28" [pid 5245] <... write resumed>) = 4 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5245] close(3) = 0 [pid 5245] symlink("/dev/binderfs", "./binderfs" [pid 5058] <... rmdir resumed>) = 0 [pid 5058] mkdir("./29", 0777 [pid 5245] <... symlink resumed>) = 0 [pid 5245] memfd_create("syzkaller", 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] close(3 [pid 5245] <... memfd_create resumed>) = 3 [pid 5061] <... ioctl resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] close(3) = 0 [pid 5245] <... mmap resumed>) = 0x7f138d200000 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5246 attached [pid 5245] 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"..., 524288 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5246] set_robust_list(0x555556c07660, 24) = 0 [pid 5246] chdir("./30" [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5247 [pid 5246] <... chdir resumed>) = 0 [pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 5247 attached [pid 5246] setpgid(0, 0 [pid 5247] set_robust_list(0x555556c07660, 24 [pid 5246] <... setpgid resumed>) = 0 [pid 5247] <... set_robust_list resumed>) = 0 [pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5247] chdir("./31" [pid 5246] <... openat resumed>) = 3 [pid 5247] <... chdir resumed>) = 0 [pid 5246] write(3, "1000", 4 [pid 5247] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5246] <... write resumed>) = 4 [pid 5247] <... prctl resumed>) = 0 [pid 5246] close(3 [pid 5247] setpgid(0, 0 [pid 5246] <... close resumed>) = 0 [pid 5247] <... setpgid resumed>) = 0 [pid 5246] symlink("/dev/binderfs", "./binderfs" [pid 5056] close(3 [pid 5247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5246] <... symlink resumed>) = 0 [pid 5059] close(3 [pid 5056] <... close resumed>) = 0 [pid 5247] <... openat resumed>) = 3 [pid 5247] write(3, "1000", 4) = 4 [pid 5246] memfd_create("syzkaller", 0 [pid 5059] <... close resumed>) = 0 [pid 5247] close(3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5247] <... close resumed>) = 0 [pid 5247] symlink("/dev/binderfs", "./binderfs" [pid 5246] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 5248 attached [pid 5248] set_robust_list(0x555556c07660, 24) = 0 [pid 5247] <... symlink resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5249 [pid 5248] chdir("./29" [pid 5247] memfd_create("syzkaller", 0 [pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5246] 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"..., 524288 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5246 ./strace-static-x86_64: Process 5249 attached [pid 5248] <... chdir resumed>) = 0 [pid 5247] <... memfd_create resumed>) = 3 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5248 [pid 5247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5249] set_robust_list(0x555556c07660, 24 [pid 5248] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5247] 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"..., 524288 [pid 5249] <... set_robust_list resumed>) = 0 [pid 5248] <... prctl resumed>) = 0 [pid 5249] chdir("./30" [pid 5248] setpgid(0, 0 [pid 5249] <... chdir resumed>) = 0 [pid 5248] <... setpgid resumed>) = 0 [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5249] <... prctl resumed>) = 0 [pid 5248] <... openat resumed>) = 3 [pid 5249] setpgid(0, 0) = 0 [pid 5248] write(3, "1000", 4 [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5248] <... write resumed>) = 4 [pid 5245] <... write resumed>) = 524288 [pid 5058] close(3 [pid 5248] close(3 [pid 5245] munmap(0x7f138d200000, 138412032 [pid 5058] <... close resumed>) = 0 [pid 5248] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5249] <... openat resumed>) = 3 [pid 5248] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 5250 attached [pid 5249] write(3, "1000", 4 [pid 5248] <... symlink resumed>) = 0 [pid 5246] <... write resumed>) = 524288 [pid 5245] <... munmap resumed>) = 0 [pid 5249] <... write resumed>) = 4 [pid 5248] memfd_create("syzkaller", 0 [pid 5247] <... write resumed>) = 524288 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5250 [pid 5250] set_robust_list(0x555556c07660, 24) = 0 [pid 5248] <... memfd_create resumed>) = 3 [pid 5245] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5250] chdir("./29" [pid 5249] close(3 [pid 5248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5250] <... chdir resumed>) = 0 [pid 5249] <... close resumed>) = 0 [pid 5248] <... mmap resumed>) = 0x7f138d200000 [pid 5245] <... openat resumed>) = 4 [pid 5250] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5249] symlink("/dev/binderfs", "./binderfs" [pid 5248] 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"..., 524288 [pid 5250] <... prctl resumed>) = 0 [pid 5249] <... symlink resumed>) = 0 [pid 5247] munmap(0x7f138d200000, 138412032 [pid 5246] munmap(0x7f138d200000, 138412032 [pid 5250] setpgid(0, 0 [pid 5249] memfd_create("syzkaller", 0 [pid 5247] <... munmap resumed>) = 0 [pid 5246] <... munmap resumed>) = 0 [pid 5250] <... setpgid resumed>) = 0 [pid 5249] <... memfd_create resumed>) = 3 [pid 5249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5249] <... mmap resumed>) = 0x7f138d200000 [pid 5246] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5250] <... openat resumed>) = 3 [pid 5246] <... openat resumed>) = 4 [pid 5245] ioctl(4, LOOP_SET_FD, 3 [pid 5247] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5246] ioctl(4, LOOP_SET_FD, 3 [pid 5250] write(3, "1000", 4 [pid 5247] <... openat resumed>) = 4 [pid 5250] <... write resumed>) = 4 [pid 5250] close(3 [pid 5249] 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"..., 524288 [pid 5250] <... close resumed>) = 0 [pid 5250] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5249] <... write resumed>) = 524288 [pid 5247] ioctl(4, LOOP_SET_FD, 3 [pid 5250] memfd_create("syzkaller", 0 [pid 5247] <... ioctl resumed>) = 0 [pid 5245] <... ioctl resumed>) = 0 [pid 5245] close(3 [pid 5250] <... memfd_create resumed>) = 3 [pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5248] <... write resumed>) = 524288 [pid 5245] <... close resumed>) = 0 [pid 5250] <... mmap resumed>) = 0x7f138d200000 [pid 5245] close(4) = 0 [pid 5245] mkdir("./bus", 0777 [pid 5249] munmap(0x7f138d200000, 138412032 [pid 5248] munmap(0x7f138d200000, 138412032 [pid 5249] <... munmap resumed>) = 0 [pid 5248] <... munmap resumed>) = 0 [pid 5245] <... mkdir resumed>) = 0 [pid 5249] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 72.039577][ T5245] loop4: detected capacity change from 0 to 1024 [ 72.039861][ T5246] loop1: detected capacity change from 0 to 1024 [ 72.066014][ T5247] loop5: detected capacity change from 0 to 1024 [pid 5250] 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"..., 524288 [pid 5249] <... openat resumed>) = 4 [pid 5248] ioctl(4, LOOP_SET_FD, 3 [pid 5247] close(3 [pid 5246] <... ioctl resumed>) = 0 [pid 5245] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5250] <... write resumed>) = 524288 [pid 5247] <... close resumed>) = 0 [pid 5247] close(4) = 0 [pid 5249] ioctl(4, LOOP_SET_FD, 3 [pid 5247] mkdir("./bus", 0777 [pid 5250] munmap(0x7f138d200000, 138412032 [pid 5247] <... mkdir resumed>) = 0 [pid 5245] <... mount resumed>) = 0 [pid 5247] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5245] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5250] <... munmap resumed>) = 0 [pid 5246] close(3 [pid 5245] <... openat resumed>) = 3 [pid 5246] <... close resumed>) = 0 [pid 5246] close(4) = 0 [pid 5245] chdir("./bus" [pid 5246] mkdir("./bus", 0777 [pid 5245] <... chdir resumed>) = 0 [pid 5245] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5250] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5248] <... ioctl resumed>) = 0 [pid 5247] <... mount resumed>) = 0 [pid 5246] <... mkdir resumed>) = 0 [pid 5245] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5246] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5250] <... openat resumed>) = 4 [pid 5250] ioctl(4, LOOP_SET_FD, 3 [pid 5248] close(3 [pid 5247] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5246] <... mount resumed>) = 0 [pid 5245] <... symlink resumed>) = 0 [pid 5250] <... ioctl resumed>) = 0 [pid 5248] <... close resumed>) = 0 [pid 5247] <... openat resumed>) = 3 [pid 5246] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5245] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5247] chdir("./bus" [pid 5246] <... openat resumed>) = 3 [pid 5247] <... chdir resumed>) = 0 [pid 5246] chdir("./bus" [pid 5249] <... ioctl resumed>) = 0 [pid 5247] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5246] <... chdir resumed>) = 0 [pid 5249] close(3 [pid 5247] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5246] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5249] <... close resumed>) = 0 [pid 5247] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5246] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5249] close(4 [pid 5247] <... symlink resumed>) = 0 [pid 5246] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5250] close(3 [pid 5249] <... close resumed>) = 0 [pid 5248] close(4 [pid 5246] <... symlink resumed>) = 0 [pid 5249] mkdir("./bus", 0777 [pid 5247] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5246] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5250] <... close resumed>) = 0 [pid 5249] <... mkdir resumed>) = 0 [pid 5248] <... close resumed>) = 0 [pid 5245] <... creat resumed>) = 4 [pid 5250] close(4 [pid 5249] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5248] mkdir("./bus", 0777 [pid 5247] <... creat resumed>) = 4 [pid 5246] <... creat resumed>) = 4 [pid 5245] rename("./bus", "./file2" [pid 5250] <... close resumed>) = 0 [pid 5247] rename("./bus", "./file2" [pid 5246] rename("./bus", "./file2" [pid 5250] mkdir("./bus", 0777 [pid 5248] <... mkdir resumed>) = 0 [pid 5250] <... mkdir resumed>) = 0 [pid 5247] <... rename resumed>) = -1 EEXIST (File exists) [pid 5246] <... rename resumed>) = -1 EEXIST (File exists) [pid 5247] memfd_create("syzkaller", 0 [pid 5246] memfd_create("syzkaller", 0 [pid 5247] <... memfd_create resumed>) = 5 [pid 5246] <... memfd_create resumed>) = 5 [pid 5247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5249] <... mount resumed>) = 0 [pid 5247] <... mmap resumed>) = 0x7f138d200000 [pid 5246] <... mmap resumed>) = 0x7f138d200000 [ 72.092131][ T5248] loop0: detected capacity change from 0 to 1024 [ 72.102123][ T5249] loop3: detected capacity change from 0 to 1024 [ 72.127243][ T5250] loop2: detected capacity change from 0 to 1024 [pid 5250] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5249] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5248] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5245] <... rename resumed>) = -1 EEXIST (File exists) [pid 5249] <... openat resumed>) = 3 [pid 5246] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5245] memfd_create("syzkaller", 0 [pid 5249] chdir("./bus") = 0 [pid 5245] <... memfd_create resumed>) = 5 [pid 5249] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5249] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5245] <... mmap resumed>) = 0x7f138d200000 [pid 5249] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5247] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5249] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 4 [pid 5247] <... write resumed>) = 524288 [pid 5249] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5249] memfd_create("syzkaller", 0 [pid 5250] <... mount resumed>) = 0 [pid 5249] <... memfd_create resumed>) = 5 [pid 5249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5250] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5245] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5250] chdir("./bus" [pid 5247] munmap(0x7f138d200000, 138412032 [pid 5246] <... write resumed>) = 524288 [pid 5250] <... chdir resumed>) = 0 [pid 5247] <... munmap resumed>) = 0 [pid 5250] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5248] <... mount resumed>) = 0 [pid 5250] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5248] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5247] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5246] munmap(0x7f138d200000, 138412032 [pid 5250] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5249] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5248] <... openat resumed>) = 3 [pid 5247] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5246] <... munmap resumed>) = 0 [pid 5250] <... symlink resumed>) = 0 [pid 5248] chdir("./bus" [pid 5247] close(5 [pid 5246] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5248] <... chdir resumed>) = 0 [pid 5247] <... close resumed>) = 0 [pid 5245] <... write resumed>) = 524288 [pid 5250] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5249] <... write resumed>) = 524288 [pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5246] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5246] close(5 [pid 5248] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5246] <... close resumed>) = 0 [pid 5245] munmap(0x7f138d200000, 138412032 [pid 5248] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5250] <... creat resumed>) = 4 [pid 5250] rename("./bus", "./file2" [pid 5247] creat("./file1", 000 [pid 5245] <... munmap resumed>) = 0 [pid 5248] <... symlink resumed>) = 0 [pid 5250] <... rename resumed>) = -1 EEXIST (File exists) [pid 5245] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5250] memfd_create("syzkaller", 0 [pid 5249] munmap(0x7f138d200000, 138412032 [pid 5248] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5247] <... creat resumed>) = 5 [pid 5250] <... memfd_create resumed>) = 5 [pid 5249] <... munmap resumed>) = 0 [pid 5247] exit_group(0 [pid 5246] creat("./file1", 000 [pid 5245] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5247] <... exit_group resumed>) = ? [pid 5245] close(5 [pid 5249] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5248] <... creat resumed>) = 4 [pid 5247] +++ exited with 0 +++ [pid 5246] <... creat resumed>) = 5 [pid 5250] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5249] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5246] exit_group(0 [pid 5245] <... close resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5247, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5061] umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5248] rename("./bus", "./file2" [pid 5061] <... openat resumed>) = 3 [pid 5061] newfstatat(3, "", [pid 5249] close(5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5246] <... exit_group resumed>) = ? [pid 5061] getdents64(3, [pid 5245] creat("./file1", 000 [pid 5249] <... close resumed>) = 0 [pid 5246] +++ exited with 0 +++ [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5250] <... write resumed>) = 524288 [pid 5061] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5250] munmap(0x7f138d200000, 138412032) = 0 [pid 5248] <... rename resumed>) = -1 EEXIST (File exists) [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5246, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5249] creat("./file1", 000 [pid 5248] memfd_create("syzkaller", 0 [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5250] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5248] <... memfd_create resumed>) = 5 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5250] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5250] close(5 [pid 5248] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5057] umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5249] <... creat resumed>) = 5 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5249] exit_group(0 [pid 5061] <... umount2 resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5245] <... creat resumed>) = 5 [pid 5057] newfstatat(3, "", [pid 5249] <... exit_group resumed>) = ? [pid 5249] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5249, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5250] <... close resumed>) = 0 [pid 5248] <... write resumed>) = 524288 [pid 5245] exit_group(0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5250] creat("./file1", 000 [pid 5245] <... exit_group resumed>) = ? [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] getdents64(3, [pid 5059] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] newfstatat(3, "", [pid 5057] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] newfstatat(AT_FDCWD, "./31/bus", [pid 5059] getdents64(3, [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5250] <... creat resumed>) = 5 [pid 5248] munmap(0x7f138d200000, 138412032 [pid 5245] +++ exited with 0 +++ [pid 5061] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = 0 [pid 5250] exit_group(0 [pid 5248] <... munmap resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5245, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5250] <... exit_group resumed>) = ? [pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... openat resumed>) = 4 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(4, "", [pid 5060] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5057] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5250] +++ exited with 0 +++ [pid 5248] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] getdents64(4, [pid 5060] newfstatat(3, "", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5248] close(5 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5250, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] getdents64(4, [pid 5060] getdents64(3, [pid 5057] newfstatat(AT_FDCWD, "./30/bus", [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... close resumed>) = 0 [pid 5060] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5248] <... close resumed>) = 0 [pid 5061] rmdir("./31/bus" [pid 5248] creat("./file1", 000 [pid 5061] <... rmdir resumed>) = 0 [pid 5058] umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... openat resumed>) = 4 [pid 5061] umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(4, "", [pid 5058] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] newfstatat(3, "", [pid 5061] newfstatat(AT_FDCWD, "./31/binderfs", [pid 5060] <... umount2 resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5248] <... creat resumed>) = 5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(3, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5248] exit_group(0 [pid 5061] unlink("./31/binderfs" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] getdents64(4, [pid 5248] <... exit_group resumed>) = ? [pid 5060] newfstatat(AT_FDCWD, "./28/bus", [pid 5059] newfstatat(AT_FDCWD, "./30/bus", [pid 5058] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5248] +++ exited with 0 +++ [pid 5061] <... unlink resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] getdents64(3, [pid 5060] umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5248, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(4 [pid 5061] close(3 [pid 5057] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] rmdir("./30/bus" [pid 5061] rmdir("./31" [pid 5059] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... openat resumed>) = 4 [pid 5059] <... openat resumed>) = 4 [pid 5057] <... rmdir resumed>) = 0 [pid 5060] newfstatat(4, "", [pid 5059] newfstatat(4, "", [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] mkdir("./32", 0777 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] newfstatat(AT_FDCWD, "./30/binderfs", [pid 5056] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] getdents64(4, [pid 5059] getdents64(4, [pid 5058] <... umount2 resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] close(4) = 0 [pid 5060] rmdir("./28/bus") = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./30/bus" [pid 5060] umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... rmdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] newfstatat(AT_FDCWD, "./30/binderfs", [pid 5058] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... openat resumed>) = 3 [pid 5060] unlink("./28/binderfs" [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] newfstatat(AT_FDCWD, "./29/bus", [pid 5057] unlink("./30/binderfs" [pid 5056] newfstatat(3, "", [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] <... unlink resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, [pid 5059] unlink("./30/binderfs" [pid 5056] getdents64(3, [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5058] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... unlink resumed>) = 0 [pid 5060] close(3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... close resumed>) = 0 [pid 5059] getdents64(3, [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(3, [pid 5060] rmdir("./28" [pid 5056] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3 [pid 5058] <... openat resumed>) = 4 [pid 5057] close(3 [pid 5059] <... close resumed>) = 0 [pid 5058] newfstatat(4, "", [pid 5057] <... close resumed>) = 0 [pid 5060] mkdir("./29", 0777 [pid 5059] rmdir("./30" [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] rmdir("./30" [pid 5060] <... mkdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] getdents64(4, [pid 5057] <... rmdir resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] mkdir("./31", 0777 [pid 5060] <... openat resumed>) = 3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] mkdir("./31", 0777 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] <... mkdir resumed>) = 0 [pid 5058] getdents64(4, [pid 5057] <... mkdir resumed>) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] <... umount2 resumed>) = 0 [pid 5058] close(4 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] rmdir("./29/bus" [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... rmdir resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./29/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./29/binderfs", [pid 5056] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./29/binderfs" [pid 5056] <... openat resumed>) = 4 [pid 5058] <... unlink resumed>) = 0 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5058] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(4, [pid 5058] close(3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... close resumed>) = 0 [pid 5056] close(4) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5058] rmdir("./29" [pid 5056] rmdir("./29/bus" [pid 5058] <... rmdir resumed>) = 0 [pid 5061] close(3 [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5058] mkdir("./30", 0777) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./29/binderfs") = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] close(3 [pid 5059] close(3 [pid 5057] close(3./strace-static-x86_64: Process 5251 attached [pid 5060] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5251 [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./29") = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5252 [pid 5056] mkdir("./30", 0777 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5254 [pid 5056] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5254 attached [pid 5251] set_robust_list(0x555556c07660, 24./strace-static-x86_64: Process 5252 attached [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5253 [pid 5254] set_robust_list(0x555556c07660, 24) = 0 [pid 5252] set_robust_list(0x555556c07660, 24 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5252] <... set_robust_list resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5252] chdir("./31" [pid 5056] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5253 attached [pid 5252] <... chdir resumed>) = 0 [pid 5253] set_robust_list(0x555556c07660, 24 [pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5253] <... set_robust_list resumed>) = 0 [pid 5254] chdir("./31" [pid 5252] <... prctl resumed>) = 0 [pid 5251] <... set_robust_list resumed>) = 0 [pid 5254] <... chdir resumed>) = 0 [pid 5251] chdir("./32" [pid 5254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5251] <... chdir resumed>) = 0 [pid 5253] chdir("./29" [pid 5252] setpgid(0, 0 [pid 5253] <... chdir resumed>) = 0 [pid 5252] <... setpgid resumed>) = 0 [pid 5251] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5254] setpgid(0, 0) = 0 [pid 5251] <... prctl resumed>) = 0 [pid 5253] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5251] setpgid(0, 0 [pid 5253] <... prctl resumed>) = 0 [pid 5254] <... openat resumed>) = 3 [pid 5252] <... openat resumed>) = 3 [pid 5251] <... setpgid resumed>) = 0 [pid 5253] setpgid(0, 0 [pid 5252] write(3, "1000", 4 [pid 5253] <... setpgid resumed>) = 0 [pid 5252] <... write resumed>) = 4 [pid 5251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5252] close(3) = 0 [pid 5253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5254] write(3, "1000", 4 [pid 5252] symlink("/dev/binderfs", "./binderfs" [pid 5251] <... openat resumed>) = 3 [pid 5058] <... ioctl resumed>) = 0 [pid 5252] <... symlink resumed>) = 0 [pid 5254] <... write resumed>) = 4 [pid 5252] memfd_create("syzkaller", 0 [pid 5251] write(3, "1000", 4 [pid 5254] close(3 [pid 5252] <... memfd_create resumed>) = 3 [pid 5251] <... write resumed>) = 4 [pid 5253] <... openat resumed>) = 3 [pid 5254] <... close resumed>) = 0 [pid 5252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5251] close(3 [pid 5253] write(3, "1000", 4 [pid 5254] symlink("/dev/binderfs", "./binderfs" [pid 5252] <... mmap resumed>) = 0x7f138d200000 [pid 5251] <... close resumed>) = 0 [pid 5058] close(3 [pid 5253] <... write resumed>) = 4 [pid 5254] <... symlink resumed>) = 0 [pid 5252] 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"..., 524288 [pid 5251] symlink("/dev/binderfs", "./binderfs" [pid 5253] close(3 [pid 5254] memfd_create("syzkaller", 0 [pid 5251] <... symlink resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5254] <... memfd_create resumed>) = 3 [pid 5251] memfd_create("syzkaller", 0 [pid 5254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5251] <... memfd_create resumed>) = 3 [pid 5251] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5254] <... mmap resumed>) = 0x7f138d200000 [pid 5251] <... mmap resumed>) = 0x7f138d200000 [pid 5253] <... close resumed>) = 0 [pid 5254] 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"..., 524288 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... ioctl resumed>) = 0 [pid 5253] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5251] 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"..., 524288 [pid 5253] memfd_create("syzkaller", 0) = 3 [pid 5253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5255 ./strace-static-x86_64: Process 5255 attached [pid 5253] <... mmap resumed>) = 0x7f138d200000 [pid 5251] <... write resumed>) = 524288 [pid 5255] set_robust_list(0x555556c07660, 24 [pid 5254] <... write resumed>) = 524288 [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5255] <... set_robust_list resumed>) = 0 [pid 5255] chdir("./30") = 0 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5255] setpgid(0, 0) = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5252] <... write resumed>) = 524288 ./strace-static-x86_64: Process 5256 attached [pid 5255] <... openat resumed>) = 3 [pid 5254] munmap(0x7f138d200000, 138412032 [pid 5252] munmap(0x7f138d200000, 138412032 [pid 5251] munmap(0x7f138d200000, 138412032 [pid 5256] set_robust_list(0x555556c07660, 24 [pid 5255] write(3, "1000", 4 [pid 5253] 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"..., 524288 [pid 5254] <... munmap resumed>) = 0 [pid 5252] <... munmap resumed>) = 0 [pid 5251] <... munmap resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5256 [pid 5256] <... set_robust_list resumed>) = 0 [pid 5255] <... write resumed>) = 4 [pid 5255] close(3 [pid 5254] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5251] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5256] chdir("./30" [pid 5255] <... close resumed>) = 0 [pid 5254] <... openat resumed>) = 4 [pid 5251] <... openat resumed>) = 4 [pid 5255] symlink("/dev/binderfs", "./binderfs" [pid 5256] <... chdir resumed>) = 0 [pid 5255] <... symlink resumed>) = 0 [pid 5254] ioctl(4, LOOP_SET_FD, 3 [pid 5252] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5251] ioctl(4, LOOP_SET_FD, 3 [pid 5256] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5252] <... openat resumed>) = 4 [pid 5256] <... prctl resumed>) = 0 [pid 5255] memfd_create("syzkaller", 0 [pid 5253] <... write resumed>) = 524288 [pid 5252] ioctl(4, LOOP_SET_FD, 3 [pid 5251] <... ioctl resumed>) = 0 [pid 5256] setpgid(0, 0 [pid 5253] munmap(0x7f138d200000, 138412032 [pid 5256] <... setpgid resumed>) = 0 [pid 5256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5255] <... memfd_create resumed>) = 3 [pid 5253] <... munmap resumed>) = 0 [pid 5255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5255] 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"..., 524288 [pid 5256] <... openat resumed>) = 3 [pid 5253] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5254] <... ioctl resumed>) = 0 [pid 5252] <... ioctl resumed>) = 0 [pid 5251] close(3 [pid 5256] write(3, "1000", 4) = 4 [pid 5256] close(3 [pid 5255] <... write resumed>) = 524288 [pid 5253] <... openat resumed>) = 4 [pid 5254] close(3 [pid 5252] close(3 [pid 5251] <... close resumed>) = 0 [pid 5256] <... close resumed>) = 0 [pid 5253] ioctl(4, LOOP_SET_FD, 3 [pid 5254] <... close resumed>) = 0 [pid 5252] <... close resumed>) = 0 [pid 5251] close(4 [pid 5256] symlink("/dev/binderfs", "./binderfs" [pid 5254] close(4 [pid 5251] <... close resumed>) = 0 [pid 5254] <... close resumed>) = 0 [pid 5251] mkdir("./bus", 0777 [pid 5254] mkdir("./bus", 0777) = 0 [pid 5251] <... mkdir resumed>) = 0 [pid 5256] <... symlink resumed>) = 0 [pid 5254] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5251] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5256] memfd_create("syzkaller", 0 [pid 5252] close(4 [pid 5256] <... memfd_create resumed>) = 3 [pid 5252] <... close resumed>) = 0 [pid 5256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5252] mkdir("./bus", 0777 [pid 5256] <... mmap resumed>) = 0x7f138d200000 [pid 5252] <... mkdir resumed>) = 0 [pid 5256] 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"..., 524288 [pid 5252] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5255] munmap(0x7f138d200000, 138412032) = 0 [pid 5251] <... mount resumed>) = 0 [pid 5255] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5252] <... mount resumed>) = 0 [pid 5251] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5252] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5251] <... openat resumed>) = 3 [pid 5255] <... openat resumed>) = 4 [pid 5251] chdir("./bus" [pid 5254] <... mount resumed>) = 0 [pid 5252] <... openat resumed>) = 3 [pid 5251] <... chdir resumed>) = 0 [ 72.560813][ T5254] loop3: detected capacity change from 0 to 1024 [ 72.568331][ T5251] loop5: detected capacity change from 0 to 1024 [ 72.577301][ T5252] loop1: detected capacity change from 0 to 1024 [ 72.600783][ T5253] loop4: detected capacity change from 0 to 1024 [pid 5255] ioctl(4, LOOP_SET_FD, 3 [pid 5254] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5252] chdir("./bus" [pid 5251] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5256] <... write resumed>) = 524288 [pid 5253] <... ioctl resumed>) = 0 [pid 5254] <... openat resumed>) = 3 [pid 5252] <... chdir resumed>) = 0 [pid 5256] munmap(0x7f138d200000, 138412032 [pid 5253] close(3 [pid 5252] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5253] <... close resumed>) = 0 [pid 5253] close(4 [pid 5256] <... munmap resumed>) = 0 [pid 5253] <... close resumed>) = 0 [pid 5254] chdir("./bus" [pid 5252] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5251] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5253] mkdir("./bus", 0777 [pid 5254] <... chdir resumed>) = 0 [pid 5252] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5251] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5253] <... mkdir resumed>) = 0 [pid 5254] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5253] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5254] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5252] <... symlink resumed>) = 0 [pid 5251] <... symlink resumed>) = 0 [pid 5256] <... openat resumed>) = 4 [pid 5254] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5252] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5251] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5256] ioctl(4, LOOP_SET_FD, 3 [pid 5253] <... mount resumed>) = 0 [pid 5254] <... symlink resumed>) = 0 [pid 5254] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 4 [pid 5251] <... creat resumed>) = 4 [pid 5251] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5254] rename("./bus", "./file2" [pid 5251] memfd_create("syzkaller", 0 [pid 5254] <... rename resumed>) = -1 EEXIST (File exists) [pid 5251] <... memfd_create resumed>) = 5 [pid 5251] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5256] <... ioctl resumed>) = 0 [pid 5253] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5254] memfd_create("syzkaller", 0 [pid 5251] <... mmap resumed>) = 0x7f138d200000 [pid 5256] close(3 [pid 5255] <... ioctl resumed>) = 0 [pid 5253] <... openat resumed>) = 3 [pid 5254] <... memfd_create resumed>) = 5 [pid 5252] <... creat resumed>) = 4 [pid 5256] <... close resumed>) = 0 [pid 5255] close(3 [pid 5253] chdir("./bus" [pid 5254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5252] rename("./bus", "./file2" [pid 5251] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5256] close(4 [pid 5255] <... close resumed>) = 0 [pid 5253] <... chdir resumed>) = 0 [pid 5254] <... mmap resumed>) = 0x7f138d200000 [pid 5253] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5256] <... close resumed>) = 0 [pid 5253] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5256] mkdir("./bus", 0777 [pid 5255] close(4 [pid 5253] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5252] <... rename resumed>) = -1 EEXIST (File exists) [pid 5255] <... close resumed>) = 0 [pid 5256] <... mkdir resumed>) = 0 [pid 5255] mkdir("./bus", 0777) = 0 [pid 5255] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5253] <... symlink resumed>) = 0 [pid 5252] memfd_create("syzkaller", 0 [pid 5251] <... write resumed>) = 524288 [pid 5256] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5253] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5254] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5252] <... memfd_create resumed>) = 5 [pid 5252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5251] munmap(0x7f138d200000, 138412032) = 0 [pid 5251] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5253] <... creat resumed>) = 4 [pid 5251] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5255] <... mount resumed>) = 0 [pid 5253] rename("./bus", "./file2" [pid 5255] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5254] <... write resumed>) = 524288 [pid 5251] close(5 [pid 5255] <... openat resumed>) = 3 [pid 5255] chdir("./bus") = 0 [ 72.633825][ T5255] loop2: detected capacity change from 0 to 1024 [ 72.657468][ T5256] loop0: detected capacity change from 0 to 1024 [pid 5255] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5255] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5252] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5255] <... symlink resumed>) = 0 [pid 5255] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5254] munmap(0x7f138d200000, 138412032) = 0 [pid 5251] <... close resumed>) = 0 [pid 5254] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5253] <... rename resumed>) = -1 EEXIST (File exists) [pid 5251] creat("./file1", 000 [pid 5253] memfd_create("syzkaller", 0) = 5 [pid 5254] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5256] <... mount resumed>) = 0 [pid 5253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5256] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5255] <... creat resumed>) = 4 [pid 5253] <... mmap resumed>) = 0x7f138d200000 [pid 5254] close(5 [pid 5256] <... openat resumed>) = 3 [pid 5255] rename("./bus", "./file2" [pid 5252] <... write resumed>) = 524288 [pid 5256] chdir("./bus") = 0 [pid 5254] <... close resumed>) = 0 [pid 5252] munmap(0x7f138d200000, 138412032 [pid 5251] <... creat resumed>) = 5 [pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5251] exit_group(0) = ? [pid 5256] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5255] <... rename resumed>) = -1 EEXIST (File exists) [pid 5253] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5252] <... munmap resumed>) = 0 [pid 5251] +++ exited with 0 +++ [pid 5255] memfd_create("syzkaller", 0) = 5 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5251, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5256] <... symlink resumed>) = 0 [pid 5255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5253] <... write resumed>) = 524288 [pid 5252] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5256] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5255] <... mmap resumed>) = 0x7f138d200000 [pid 5252] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5254] creat("./file1", 000 [pid 5061] umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5256] <... creat resumed>) = 4 [pid 5254] <... creat resumed>) = 5 [pid 5252] close(5 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5254] exit_group(0 [pid 5061] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5255] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5254] <... exit_group resumed>) = ? [pid 5256] rename("./bus", "./file2" [pid 5254] +++ exited with 0 +++ [pid 5061] newfstatat(3, "", [pid 5253] munmap(0x7f138d200000, 138412032) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5253] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] getdents64(3, [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5254, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5253] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5252] <... close resumed>) = 0 [pid 5059] umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5253] close(5 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5253] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5256] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5256] memfd_create("syzkaller", 0 [pid 5255] <... write resumed>) = 524288 [pid 5252] creat("./file1", 000 [pid 5059] newfstatat(3, "", [pid 5256] <... memfd_create resumed>) = 5 [pid 5256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5256] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] getdents64(3, [pid 5253] creat("./file1", 000 [pid 5252] <... creat resumed>) = 5 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5252] exit_group(0 [pid 5059] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5253] <... creat resumed>) = 5 [pid 5252] <... exit_group resumed>) = ? [pid 5253] exit_group(0) = ? [pid 5252] +++ exited with 0 +++ [pid 5059] <... umount2 resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5252, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5057] umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5256] <... write resumed>) = 524288 [pid 5061] <... umount2 resumed>) = 0 [pid 5059] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5255] munmap(0x7f138d200000, 138412032 [pid 5253] +++ exited with 0 +++ [pid 5059] newfstatat(AT_FDCWD, "./31/bus", [pid 5057] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5255] <... munmap resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5256] munmap(0x7f138d200000, 138412032 [pid 5061] newfstatat(AT_FDCWD, "./32/bus", [pid 5059] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5255] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5253, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(3, "", [pid 5059] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5255] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5256] <... munmap resumed>) = 0 [pid 5255] close(5 [pid 5061] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(4, "", [pid 5057] getdents64(3, [pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... openat resumed>) = 4 [pid 5060] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] newfstatat(4, "", [pid 5059] getdents64(4, [pid 5256] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5255] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5256] close(5 [pid 5061] getdents64(4, [pid 5060] newfstatat(3, "", [pid 5059] getdents64(4, [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5255] creat("./file1", 000 [pid 5060] getdents64(3, [pid 5061] getdents64(4, [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... umount2 resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5255] <... creat resumed>) = 5 [pid 5061] close(4 [pid 5059] close(4 [pid 5061] <... close resumed>) = 0 [pid 5057] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] rmdir("./32/bus" [pid 5059] rmdir("./31/bus" [pid 5057] newfstatat(AT_FDCWD, "./31/bus", [pid 5255] exit_group(0 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5255] <... exit_group resumed>) = ? [pid 5061] umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5256] <... close resumed>) = 0 [pid 5059] umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./32/binderfs", [pid 5059] newfstatat(AT_FDCWD, "./31/binderfs", [pid 5057] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5256] creat("./file1", 000 [pid 5061] unlink("./32/binderfs" [pid 5060] <... umount2 resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5059] unlink("./31/binderfs" [pid 5057] newfstatat(4, "", [pid 5255] +++ exited with 0 +++ [pid 5061] <... unlink resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./29/bus", [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5255, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5061] getdents64(3, [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] getdents64(3, [pid 5057] getdents64(4, [pid 5256] <... creat resumed>) = 5 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5061] close(3 [pid 5058] <... restart_syscall resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5256] exit_group(0 [pid 5061] rmdir("./32" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] getdents64(4, [pid 5256] <... exit_group resumed>) = ? [pid 5061] <... rmdir resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] close(3 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5059] <... close resumed>) = 0 [pid 5058] umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(4 [pid 5059] rmdir("./31" [pid 5060] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... rmdir resumed>) = 0 [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] mkdir("./33", 0777 [pid 5057] <... close resumed>) = 0 [pid 5060] close(4) = 0 [pid 5060] rmdir("./29/bus" [pid 5061] <... mkdir resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5060] umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5256] +++ exited with 0 +++ [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] mkdir("./32", 0777 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] rmdir("./31/bus" [pid 5061] <... openat resumed>) = 3 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... mkdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5256, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5060] newfstatat(AT_FDCWD, "./29/binderfs", [pid 5057] <... rmdir resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5057] umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] unlink("./29/binderfs") = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... openat resumed>) = 3 [pid 5060] getdents64(3, [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] newfstatat(3, "", [pid 5057] newfstatat(AT_FDCWD, "./31/binderfs", [pid 5056] umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(3, [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] unlink("./31/binderfs" [pid 5056] <... openat resumed>) = 3 [pid 5057] <... unlink resumed>) = 0 [pid 5058] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(3, "", [pid 5060] <... close resumed>) = 0 [pid 5060] rmdir("./29" [pid 5057] getdents64(3, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] mkdir("./30", 0777) = 0 [pid 5057] close(3 [pid 5056] getdents64(3, [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./31" [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... rmdir resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] mkdir("./32", 0777 [pid 5058] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... mkdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] newfstatat(AT_FDCWD, "./30/bus", [pid 5057] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5058] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5058] newfstatat(4, "", [pid 5056] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(4, [pid 5056] newfstatat(AT_FDCWD, "./30/bus", [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] getdents64(4, [pid 5056] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] close(4 [pid 5056] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./30/bus" [pid 5056] <... openat resumed>) = 4 [pid 5059] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5059] close(3 [pid 5061] <... ioctl resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] close(3 [pid 5056] newfstatat(4, "", [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] close(3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./30/binderfs", [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] getdents64(4, ./strace-static-x86_64: Process 5257 attached [pid 5060] close(3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./30/binderfs") = 0 [pid 5058] getdents64(3, [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 5258 attached [pid 5257] set_robust_list(0x555556c07660, 24 [pid 5060] <... close resumed>) = 0 [pid 5058] close(3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5258] set_robust_list(0x555556c07660, 24 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5258 [pid 5056] getdents64(4, [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5257 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./30" [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5260 [pid 5056] close(4 [pid 5257] <... set_robust_list resumed>) = 0 [pid 5257] chdir("./32" [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5259 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 ./strace-static-x86_64: Process 5260 attached [pid 5258] <... set_robust_list resumed>) = 0 [pid 5257] <... chdir resumed>) = 0 [pid 5056] rmdir("./30/bus" [pid 5257] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] mkdir("./31", 0777 [pid 5056] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5259 attached [pid 5260] set_robust_list(0x555556c07660, 24 [pid 5258] chdir("./32" [pid 5257] <... prctl resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5260] <... set_robust_list resumed>) = 0 [pid 5257] setpgid(0, 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5260] chdir("./30" [pid 5259] set_robust_list(0x555556c07660, 24 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] newfstatat(AT_FDCWD, "./30/binderfs", [pid 5260] <... chdir resumed>) = 0 [pid 5258] <... chdir resumed>) = 0 [pid 5257] <... setpgid resumed>) = 0 [pid 5260] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5258] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5260] <... prctl resumed>) = 0 [pid 5259] <... set_robust_list resumed>) = 0 [pid 5258] <... prctl resumed>) = 0 [pid 5257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... openat resumed>) = 3 [pid 5056] unlink("./30/binderfs" [pid 5260] setpgid(0, 0 [pid 5259] chdir("./33" [pid 5258] setpgid(0, 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5259] <... chdir resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5260] <... setpgid resumed>) = 0 [pid 5259] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5258] <... setpgid resumed>) = 0 [pid 5257] <... openat resumed>) = 3 [pid 5056] getdents64(3, [pid 5259] <... prctl resumed>) = 0 [pid 5259] setpgid(0, 0 [pid 5258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5257] write(3, "1000", 4 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5259] <... setpgid resumed>) = 0 [pid 5259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5258] <... openat resumed>) = 3 [pid 5257] <... write resumed>) = 4 [pid 5056] close(3 [pid 5260] <... openat resumed>) = 3 [pid 5259] <... openat resumed>) = 3 [pid 5257] close(3 [pid 5260] write(3, "1000", 4 [pid 5259] write(3, "1000", 4 [pid 5258] write(3, "1000", 4 [pid 5056] <... close resumed>) = 0 [pid 5260] <... write resumed>) = 4 [pid 5259] <... write resumed>) = 4 [pid 5258] <... write resumed>) = 4 [pid 5257] <... close resumed>) = 0 [pid 5056] rmdir("./30" [pid 5260] close(3 [pid 5258] close(3 [pid 5257] symlink("/dev/binderfs", "./binderfs" [pid 5260] <... close resumed>) = 0 [pid 5258] <... close resumed>) = 0 [pid 5260] symlink("/dev/binderfs", "./binderfs" [pid 5259] close(3 [pid 5258] symlink("/dev/binderfs", "./binderfs" [pid 5257] <... symlink resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5259] <... close resumed>) = 0 [pid 5259] symlink("/dev/binderfs", "./binderfs" [pid 5260] <... symlink resumed>) = 0 [pid 5259] <... symlink resumed>) = 0 [pid 5258] <... symlink resumed>) = 0 [pid 5056] mkdir("./31", 0777 [pid 5260] memfd_create("syzkaller", 0 [pid 5259] memfd_create("syzkaller", 0 [pid 5257] memfd_create("syzkaller", 0 [pid 5260] <... memfd_create resumed>) = 3 [pid 5259] <... memfd_create resumed>) = 3 [pid 5258] memfd_create("syzkaller", 0 [pid 5257] <... memfd_create resumed>) = 3 [pid 5056] <... mkdir resumed>) = 0 [pid 5260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5260] <... mmap resumed>) = 0x7f138d200000 [pid 5259] <... mmap resumed>) = 0x7f138d200000 [pid 5258] <... memfd_create resumed>) = 3 [pid 5257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5259] 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"..., 524288 [pid 5257] <... mmap resumed>) = 0x7f138d200000 [pid 5258] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... openat resumed>) = 3 [pid 5260] 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"..., 524288 [pid 5258] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5257] 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"..., 524288 [pid 5258] 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"..., 524288 [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5257] <... write resumed>) = 524288 ./strace-static-x86_64: Process 5261 attached [pid 5261] set_robust_list(0x555556c07660, 24) = 0 [pid 5259] <... write resumed>) = 524288 [pid 5261] chdir("./31" [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5261 [pid 5261] <... chdir resumed>) = 0 [pid 5261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5261] setpgid(0, 0) = 0 [pid 5261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5259] munmap(0x7f138d200000, 138412032 [pid 5261] write(3, "1000", 4 [pid 5259] <... munmap resumed>) = 0 [pid 5261] <... write resumed>) = 4 [pid 5261] close(3) = 0 [pid 5261] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5261] memfd_create("syzkaller", 0 [pid 5259] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5260] <... write resumed>) = 524288 [pid 5259] <... openat resumed>) = 4 [pid 5257] munmap(0x7f138d200000, 138412032 [pid 5261] <... memfd_create resumed>) = 3 [pid 5258] <... write resumed>) = 524288 [pid 5261] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5258] munmap(0x7f138d200000, 138412032 [pid 5260] munmap(0x7f138d200000, 138412032 [pid 5258] <... munmap resumed>) = 0 [pid 5257] <... munmap resumed>) = 0 [pid 5260] <... munmap resumed>) = 0 [pid 5259] ioctl(4, LOOP_SET_FD, 3 [pid 5258] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5257] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] <... ioctl resumed>) = 0 [pid 5261] 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"..., 524288 [pid 5258] <... openat resumed>) = 4 [pid 5257] <... openat resumed>) = 4 [pid 5257] ioctl(4, LOOP_SET_FD, 3 [pid 5258] ioctl(4, LOOP_SET_FD, 3 [pid 5056] close(3 [pid 5259] <... ioctl resumed>) = 0 [pid 5259] close(3 [pid 5261] <... write resumed>) = 524288 [pid 5260] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5259] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5261] munmap(0x7f138d200000, 138412032 [pid 5260] <... openat resumed>) = 4 [pid 5259] close(4 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5260] ioctl(4, LOOP_SET_FD, 3 [pid 5259] <... close resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5262 ./strace-static-x86_64: Process 5262 attached [pid 5261] <... munmap resumed>) = 0 [pid 5259] mkdir("./bus", 0777 [pid 5257] <... ioctl resumed>) = 0 [pid 5258] <... ioctl resumed>) = 0 [pid 5258] close(3 [pid 5257] close(3 [pid 5258] <... close resumed>) = 0 [pid 5257] <... close resumed>) = 0 [ 73.102677][ T5259] loop5: detected capacity change from 0 to 1024 [ 73.115481][ T5257] loop3: detected capacity change from 0 to 1024 [ 73.122891][ T5258] loop1: detected capacity change from 0 to 1024 [ 73.133416][ T5260] loop4: detected capacity change from 0 to 1024 [pid 5258] close(4 [pid 5262] set_robust_list(0x555556c07660, 24 [pid 5261] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5259] <... mkdir resumed>) = 0 [pid 5262] <... set_robust_list resumed>) = 0 [pid 5261] <... openat resumed>) = 4 [pid 5259] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5262] chdir("./31" [pid 5261] ioctl(4, LOOP_SET_FD, 3 [pid 5258] <... close resumed>) = 0 [pid 5262] <... chdir resumed>) = 0 [pid 5258] mkdir("./bus", 0777 [pid 5257] close(4 [pid 5262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5262] setpgid(0, 0) = 0 [pid 5262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5257] <... close resumed>) = 0 [pid 5262] write(3, "1000", 4 [pid 5257] mkdir("./bus", 0777 [pid 5262] <... write resumed>) = 4 [pid 5262] close(3 [pid 5257] <... mkdir resumed>) = 0 [pid 5262] <... close resumed>) = 0 [pid 5257] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5262] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5262] memfd_create("syzkaller", 0) = 3 [pid 5262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5260] <... ioctl resumed>) = 0 [pid 5259] <... mount resumed>) = 0 [pid 5262] 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"..., 524288 [pid 5260] close(3) = 0 [pid 5260] close(4) = 0 [pid 5260] mkdir("./bus", 0777 [pid 5261] <... ioctl resumed>) = 0 [pid 5260] <... mkdir resumed>) = 0 [pid 5259] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5258] <... mkdir resumed>) = 0 [pid 5261] close(3 [pid 5260] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5261] <... close resumed>) = 0 [pid 5259] <... openat resumed>) = 3 [pid 5258] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5262] <... write resumed>) = 524288 [pid 5261] close(4 [pid 5259] chdir("./bus" [pid 5257] <... mount resumed>) = 0 [pid 5257] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5259] <... chdir resumed>) = 0 [pid 5259] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5257] <... openat resumed>) = 3 [pid 5261] <... close resumed>) = 0 [pid 5259] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5261] mkdir("./bus", 0777 [pid 5257] chdir("./bus" [pid 5261] <... mkdir resumed>) = 0 [pid 5259] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5257] <... chdir resumed>) = 0 [pid 5257] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5261] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5257] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5259] <... symlink resumed>) = 0 [ 73.148353][ T5261] loop2: detected capacity change from 0 to 1024 [pid 5257] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5259] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5261] <... mount resumed>) = 0 [pid 5258] <... mount resumed>) = 0 [pid 5262] munmap(0x7f138d200000, 138412032 [pid 5261] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5260] <... mount resumed>) = 0 [pid 5259] <... creat resumed>) = 4 [pid 5258] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5257] <... symlink resumed>) = 0 [pid 5262] <... munmap resumed>) = 0 [pid 5261] <... openat resumed>) = 3 [pid 5260] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5259] rename("./bus", "./file2" [pid 5258] <... openat resumed>) = 3 [pid 5257] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5261] chdir("./bus" [pid 5260] <... openat resumed>) = 3 [pid 5258] chdir("./bus" [pid 5262] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5261] <... chdir resumed>) = 0 [pid 5260] chdir("./bus" [pid 5259] <... rename resumed>) = -1 EEXIST (File exists) [pid 5258] <... chdir resumed>) = 0 [pid 5262] <... openat resumed>) = 4 [pid 5261] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5260] <... chdir resumed>) = 0 [pid 5258] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5262] ioctl(4, LOOP_SET_FD, 3 [pid 5261] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5260] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5258] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5259] memfd_create("syzkaller", 0 [pid 5261] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5257] <... creat resumed>) = 4 [pid 5259] <... memfd_create resumed>) = 5 [pid 5257] rename("./bus", "./file2" [pid 5259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5258] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5259] <... mmap resumed>) = 0x7f138d200000 [pid 5261] <... symlink resumed>) = 0 [pid 5261] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5257] <... rename resumed>) = -1 EEXIST (File exists) [pid 5258] <... symlink resumed>) = 0 [pid 5262] <... ioctl resumed>) = 0 [pid 5261] <... creat resumed>) = 4 [pid 5260] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5259] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5258] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5257] memfd_create("syzkaller", 0 [pid 5262] close(3 [pid 5261] rename("./bus", "./file2" [pid 5260] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5257] <... memfd_create resumed>) = 5 [pid 5261] <... rename resumed>) = -1 EEXIST (File exists) [pid 5258] <... creat resumed>) = 4 [pid 5262] <... close resumed>) = 0 [pid 5261] memfd_create("syzkaller", 0 [pid 5258] rename("./bus", "./file2" [pid 5257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5262] close(4 [pid 5261] <... memfd_create resumed>) = 5 [pid 5257] <... mmap resumed>) = 0x7f138d200000 [pid 5262] <... close resumed>) = 0 [pid 5261] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5260] <... symlink resumed>) = 0 [pid 5259] <... write resumed>) = 524288 [pid 5258] <... rename resumed>) = -1 EEXIST (File exists) [pid 5257] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5262] mkdir("./bus", 0777 [pid 5261] <... mmap resumed>) = 0x7f138d200000 [pid 5260] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5261] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5259] munmap(0x7f138d200000, 138412032 [pid 5258] memfd_create("syzkaller", 0) = 5 [pid 5262] <... mkdir resumed>) = 0 [pid 5259] <... munmap resumed>) = 0 [pid 5258] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5262] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5260] <... creat resumed>) = 4 [pid 5258] <... mmap resumed>) = 0x7f138d200000 [ 73.209433][ T5262] loop0: detected capacity change from 0 to 1024 [pid 5259] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5260] rename("./bus", "./file2" [pid 5259] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5259] close(5) = 0 [pid 5260] <... rename resumed>) = -1 EEXIST (File exists) [pid 5260] memfd_create("syzkaller", 0 [pid 5258] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5260] <... memfd_create resumed>) = 5 [pid 5260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5260] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5259] creat("./file1", 000 [pid 5257] <... write resumed>) = 524288 [pid 5257] munmap(0x7f138d200000, 138412032 [pid 5261] <... write resumed>) = 524288 [pid 5257] <... munmap resumed>) = 0 [pid 5262] <... mount resumed>) = 0 [pid 5260] <... write resumed>) = 524288 [pid 5262] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5259] <... creat resumed>) = 5 [pid 5258] <... write resumed>) = 524288 [pid 5262] <... openat resumed>) = 3 [pid 5261] munmap(0x7f138d200000, 138412032 [pid 5259] exit_group(0 [pid 5262] chdir("./bus" [pid 5261] <... munmap resumed>) = 0 [pid 5258] munmap(0x7f138d200000, 138412032 [pid 5257] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5262] <... chdir resumed>) = 0 [pid 5262] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5262] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5261] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5257] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5262] <... symlink resumed>) = 0 [pid 5261] close(5 [pid 5260] munmap(0x7f138d200000, 138412032 [pid 5259] <... exit_group resumed>) = ? [pid 5258] <... munmap resumed>) = 0 [pid 5257] close(5 [pid 5262] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5261] <... close resumed>) = 0 [pid 5260] <... munmap resumed>) = 0 [pid 5259] +++ exited with 0 +++ [pid 5262] <... creat resumed>) = 4 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5259, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5262] rename("./bus", "./file2" [pid 5258] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5257] <... close resumed>) = 0 [pid 5258] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5257] creat("./file1", 000 [pid 5260] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5258] close(5 [pid 5262] <... rename resumed>) = -1 EEXIST (File exists) [pid 5260] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5262] memfd_create("syzkaller", 0 [pid 5260] close(5 [pid 5262] <... memfd_create resumed>) = 5 [pid 5261] creat("./file1", 000 [pid 5260] <... close resumed>) = 0 [pid 5061] umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5262] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5258] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5257] <... creat resumed>) = 5 [pid 5061] <... openat resumed>) = 3 [pid 5258] creat("./file1", 000 [pid 5260] creat("./file1", 000 [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5257] exit_group(0 [pid 5261] <... creat resumed>) = 5 [pid 5261] exit_group(0 [pid 5260] <... creat resumed>) = 5 [pid 5262] <... write resumed>) = 524288 [pid 5257] <... exit_group resumed>) = ? [pid 5261] <... exit_group resumed>) = ? [pid 5260] exit_group(0 [pid 5261] +++ exited with 0 +++ [pid 5260] <... exit_group resumed>) = ? [pid 5258] <... creat resumed>) = 5 [pid 5257] +++ exited with 0 +++ [pid 5260] +++ exited with 0 +++ [pid 5258] exit_group(0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5257, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5261, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5258] <... exit_group resumed>) = ? [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5260, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5058] umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5258] +++ exited with 0 +++ [pid 5061] <... umount2 resumed>) = 0 [pid 5060] umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... openat resumed>) = 3 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5258, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5059] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5059] newfstatat(3, "", [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5262] munmap(0x7f138d200000, 138412032 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, [pid 5057] <... restart_syscall resumed>) = 0 [pid 5262] <... munmap resumed>) = 0 [pid 5061] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5262] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] newfstatat(AT_FDCWD, "./33/bus", [pid 5060] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5262] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5262] close(5 [pid 5061] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(3, "", [pid 5057] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5061] <... openat resumed>) = 4 [pid 5060] getdents64(3, [pid 5057] newfstatat(3, "", [pid 5061] newfstatat(4, "", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] getdents64(3, [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5262] <... close resumed>) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./33/bus" [pid 5060] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5262] creat("./file1", 000 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] newfstatat(AT_FDCWD, "./32/bus", [pid 5058] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./31/bus", [pid 5061] newfstatat(AT_FDCWD, "./33/binderfs", [pid 5059] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] unlink("./33/binderfs" [pid 5059] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... unlink resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5262] <... creat resumed>) = 5 [pid 5059] newfstatat(4, "", [pid 5061] getdents64(3, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] getdents64(4, [pid 5061] close(3 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... close resumed>) = 0 [pid 5061] rmdir("./33" [pid 5059] getdents64(4, [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5262] exit_group(0 [pid 5059] close(4 [pid 5262] <... exit_group resumed>) = ? [pid 5059] <... close resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5262] +++ exited with 0 +++ [pid 5059] rmdir("./32/bus" [pid 5057] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] mkdir("./34", 0777 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5262, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5061] <... mkdir resumed>) = 0 [pid 5058] newfstatat(4, "", [pid 5056] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5059] umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(4, [pid 5057] newfstatat(AT_FDCWD, "./32/bus", [pid 5061] <... openat resumed>) = 3 [pid 5059] newfstatat(AT_FDCWD, "./32/binderfs", [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(4, [pid 5057] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] close(4 [pid 5057] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... close resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] rmdir("./31/bus" [pid 5057] <... openat resumed>) = 4 [pid 5056] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] unlink("./32/binderfs" [pid 5056] <... openat resumed>) = 3 [pid 5059] <... unlink resumed>) = 0 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, [pid 5058] <... rmdir resumed>) = 0 [pid 5060] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(4, "", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./30/bus", [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(4, [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] newfstatat(AT_FDCWD, "./31/binderfs", [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] getdents64(4, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] unlink("./31/binderfs" [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] close(3 [pid 5058] <... unlink resumed>) = 0 [pid 5057] close(4 [pid 5056] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 4 [pid 5059] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(4, "", [pid 5059] rmdir("./32" [pid 5057] rmdir("./32/bus" [pid 5056] newfstatat(AT_FDCWD, "./31/bus", [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] getdents64(3, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(4, [pid 5058] close(3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] mkdir("./33", 0777 [pid 5058] <... close resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./32/binderfs", [pid 5056] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] close(4 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] rmdir("./31" [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... close resumed>) = 0 [pid 5057] unlink("./32/binderfs" [pid 5056] <... openat resumed>) = 4 [pid 5060] rmdir("./30/bus" [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] <... unlink resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5057] getdents64(3, [pid 5056] newfstatat(4, "", [pid 5060] umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] mkdir("./32", 0777 [pid 5057] close(3 [pid 5060] newfstatat(AT_FDCWD, "./30/binderfs", [pid 5057] <... close resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5057] rmdir("./32" [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5060] unlink("./30/binderfs" [pid 5057] <... rmdir resumed>) = 0 [pid 5056] rmdir("./31/bus" [pid 5060] <... unlink resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5056] umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./31/binderfs", [pid 5058] <... mkdir resumed>) = 0 [pid 5060] getdents64(3, [pid 5057] mkdir("./33", 0777 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] unlink("./31/binderfs") = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] getdents64(3, [pid 5061] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] <... close resumed>) = 0 [pid 5061] close(3 [pid 5060] rmdir("./30" [pid 5058] <... openat resumed>) = 3 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] close(3 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... close resumed>) = 0 [pid 5060] mkdir("./31", 0777) = 0 ./strace-static-x86_64: Process 5263 attached [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5263 [pid 5056] rmdir("./31") = 0 [pid 5263] set_robust_list(0x555556c07660, 24 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5263] <... set_robust_list resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5263] chdir("./34" [pid 5056] mkdir("./32", 0777 [pid 5263] <... chdir resumed>) = 0 [pid 5263] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5263] setpgid(0, 0) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5263] <... openat resumed>) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5263] write(3, "1000", 4 [pid 5059] <... ioctl resumed>) = 0 [pid 5059] close(3 [pid 5263] <... write resumed>) = 4 [pid 5263] close(3) = 0 [pid 5263] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5263] memfd_create("syzkaller", 0 [pid 5059] <... close resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5263] <... memfd_create resumed>) = 3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5263] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5263] 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"..., 524288./strace-static-x86_64: Process 5264 attached [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5264 [pid 5058] close(3 [pid 5057] close(3 [pid 5056] <... ioctl resumed>) = 0 [pid 5264] set_robust_list(0x555556c07660, 24 [pid 5058] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5264] <... set_robust_list resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5264] chdir("./33"./strace-static-x86_64: Process 5265 attached ) = 0 [pid 5265] set_robust_list(0x555556c07660, 24 [pid 5264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5265 [pid 5265] <... set_robust_list resumed>) = 0 [pid 5264] setpgid(0, 0 [pid 5263] <... write resumed>) = 524288 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5266 [pid 5265] chdir("./33" [pid 5264] <... setpgid resumed>) = 0 [pid 5265] <... chdir resumed>) = 0 [pid 5264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5267 ./strace-static-x86_64: Process 5267 attached ./strace-static-x86_64: Process 5266 attached [pid 5265] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5264] <... openat resumed>) = 3 [pid 5267] set_robust_list(0x555556c07660, 24 [pid 5266] set_robust_list(0x555556c07660, 24 [pid 5265] <... prctl resumed>) = 0 [pid 5264] write(3, "1000", 4 [pid 5263] munmap(0x7f138d200000, 138412032 [pid 5060] close(3 [pid 5265] setpgid(0, 0 [pid 5264] <... write resumed>) = 4 [pid 5263] <... munmap resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5265] <... setpgid resumed>) = 0 [pid 5264] close(3 [pid 5265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5264] <... close resumed>) = 0 [pid 5263] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5265] <... openat resumed>) = 3 [pid 5264] symlink("/dev/binderfs", "./binderfs" [pid 5263] <... openat resumed>) = 4 [pid 5265] write(3, "1000", 4 [pid 5264] <... symlink resumed>) = 0 [pid 5267] <... set_robust_list resumed>) = 0 [pid 5266] <... set_robust_list resumed>) = 0 [pid 5265] <... write resumed>) = 4 [pid 5265] close(3 [pid 5264] memfd_create("syzkaller", 0 [pid 5263] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 5268 attached [pid 5267] chdir("./32" [pid 5266] chdir("./32" [pid 5265] <... close resumed>) = 0 [pid 5267] <... chdir resumed>) = 0 [pid 5266] <... chdir resumed>) = 0 [pid 5267] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5266] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5264] <... memfd_create resumed>) = 3 [pid 5266] <... prctl resumed>) = 0 [pid 5268] set_robust_list(0x555556c07660, 24 [pid 5266] setpgid(0, 0 [pid 5265] symlink("/dev/binderfs", "./binderfs" [pid 5264] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5268 [pid 5268] <... set_robust_list resumed>) = 0 [pid 5265] <... symlink resumed>) = 0 [pid 5264] <... mmap resumed>) = 0x7f138d200000 [pid 5267] <... prctl resumed>) = 0 [pid 5266] <... setpgid resumed>) = 0 [pid 5264] 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"..., 524288 [pid 5267] setpgid(0, 0 [pid 5268] chdir("./31" [pid 5267] <... setpgid resumed>) = 0 [pid 5266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5265] memfd_create("syzkaller", 0 [pid 5268] <... chdir resumed>) = 0 [pid 5267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5265] <... memfd_create resumed>) = 3 [pid 5268] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5266] <... openat resumed>) = 3 [pid 5265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5268] <... prctl resumed>) = 0 [pid 5267] <... openat resumed>) = 3 [pid 5266] write(3, "1000", 4 [pid 5265] <... mmap resumed>) = 0x7f138d200000 [pid 5268] setpgid(0, 0 [pid 5267] write(3, "1000", 4 [pid 5266] <... write resumed>) = 4 [pid 5265] 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"..., 524288 [pid 5268] <... setpgid resumed>) = 0 [pid 5266] close(3 [pid 5268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5266] <... close resumed>) = 0 [pid 5268] write(3, "1000", 4 [pid 5267] <... write resumed>) = 4 [pid 5266] symlink("/dev/binderfs", "./binderfs" [pid 5268] <... write resumed>) = 4 [pid 5267] close(3 [pid 5268] close(3) = 0 [pid 5267] <... close resumed>) = 0 [pid 5266] <... symlink resumed>) = 0 [pid 5268] symlink("/dev/binderfs", "./binderfs" [pid 5267] symlink("/dev/binderfs", "./binderfs" [pid 5266] memfd_create("syzkaller", 0 [pid 5265] <... write resumed>) = 524288 [pid 5263] <... ioctl resumed>) = 0 [pid 5268] <... symlink resumed>) = 0 [pid 5268] memfd_create("syzkaller", 0 [pid 5267] <... symlink resumed>) = 0 [pid 5266] <... memfd_create resumed>) = 3 [pid 5268] <... memfd_create resumed>) = 3 [pid 5266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5267] memfd_create("syzkaller", 0 [pid 5268] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5266] <... mmap resumed>) = 0x7f138d200000 [pid 5267] <... memfd_create resumed>) = 3 [pid 5268] <... mmap resumed>) = 0x7f138d200000 [pid 5268] 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"..., 524288 [pid 5267] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5266] 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"..., 524288 [pid 5267] <... mmap resumed>) = 0x7f138d200000 [pid 5264] <... write resumed>) = 524288 [pid 5264] munmap(0x7f138d200000, 138412032 [pid 5263] close(3 [pid 5264] <... munmap resumed>) = 0 [pid 5263] <... close resumed>) = 0 [pid 5264] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5263] close(4 [pid 5264] <... openat resumed>) = 4 [pid 5263] <... close resumed>) = 0 [ 73.574009][ T5263] loop5: detected capacity change from 0 to 1024 [pid 5264] ioctl(4, LOOP_SET_FD, 3 [pid 5263] mkdir("./bus", 0777 [pid 5267] 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"..., 524288 [pid 5263] <... mkdir resumed>) = 0 [pid 5263] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5268] <... write resumed>) = 524288 [pid 5267] <... write resumed>) = 524288 [pid 5265] munmap(0x7f138d200000, 138412032) = 0 [pid 5266] <... write resumed>) = 524288 [pid 5265] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5267] munmap(0x7f138d200000, 138412032 [pid 5266] munmap(0x7f138d200000, 138412032 [pid 5265] ioctl(4, LOOP_SET_FD, 3 [pid 5268] munmap(0x7f138d200000, 138412032 [pid 5267] <... munmap resumed>) = 0 [pid 5266] <... munmap resumed>) = 0 [pid 5264] <... ioctl resumed>) = 0 [pid 5268] <... munmap resumed>) = 0 [pid 5267] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5266] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5265] <... ioctl resumed>) = 0 [pid 5263] <... mount resumed>) = 0 [pid 5267] <... openat resumed>) = 4 [pid 5266] <... openat resumed>) = 4 [pid 5265] close(3 [pid 5264] close(3 [pid 5263] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5268] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5267] ioctl(4, LOOP_SET_FD, 3 [pid 5266] ioctl(4, LOOP_SET_FD, 3 [pid 5265] <... close resumed>) = 0 [pid 5264] <... close resumed>) = 0 [pid 5268] <... openat resumed>) = 4 [pid 5267] <... ioctl resumed>) = 0 [pid 5265] close(4 [pid 5264] close(4 [pid 5263] <... openat resumed>) = 3 [pid 5268] ioctl(4, LOOP_SET_FD, 3 [pid 5267] close(3 [pid 5266] <... ioctl resumed>) = 0 [pid 5265] <... close resumed>) = 0 [ 73.626247][ T5264] loop3: detected capacity change from 0 to 1024 [ 73.646613][ T5265] loop1: detected capacity change from 0 to 1024 [ 73.658740][ T5267] loop0: detected capacity change from 0 to 1024 [ 73.666621][ T5266] loop2: detected capacity change from 0 to 1024 [pid 5264] <... close resumed>) = 0 [pid 5263] chdir("./bus" [pid 5267] <... close resumed>) = 0 [pid 5266] close(3 [pid 5264] mkdir("./bus", 0777 [pid 5267] close(4 [pid 5266] <... close resumed>) = 0 [pid 5267] <... close resumed>) = 0 [pid 5266] close(4 [pid 5264] <... mkdir resumed>) = 0 [pid 5267] mkdir("./bus", 0777 [pid 5266] <... close resumed>) = 0 [pid 5265] mkdir("./bus", 0777 [pid 5266] mkdir("./bus", 0777 [pid 5268] <... ioctl resumed>) = 0 [pid 5266] <... mkdir resumed>) = 0 [pid 5265] <... mkdir resumed>) = 0 [pid 5263] <... chdir resumed>) = 0 [pid 5268] close(3 [pid 5266] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5265] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5263] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5268] <... close resumed>) = 0 [pid 5267] <... mkdir resumed>) = 0 [pid 5264] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5268] close(4 [pid 5263] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5268] <... close resumed>) = 0 [pid 5267] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5266] <... mount resumed>) = 0 [pid 5265] <... mount resumed>) = 0 [pid 5264] <... mount resumed>) = 0 [pid 5263] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5268] mkdir("./bus", 0777 [pid 5266] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5265] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5264] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5268] <... mkdir resumed>) = 0 [pid 5267] <... mount resumed>) = 0 [pid 5266] <... openat resumed>) = 3 [pid 5264] <... openat resumed>) = 3 [pid 5263] <... symlink resumed>) = 0 [pid 5267] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5266] chdir("./bus" [pid 5264] chdir("./bus" [pid 5267] <... openat resumed>) = 3 [pid 5266] <... chdir resumed>) = 0 [pid 5264] <... chdir resumed>) = 0 [pid 5263] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5267] chdir("./bus" [pid 5266] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5264] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5267] <... chdir resumed>) = 0 [pid 5266] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5264] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5267] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5266] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5264] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5267] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5267] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5268] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5265] <... openat resumed>) = 3 [pid 5267] <... symlink resumed>) = 0 [pid 5266] <... symlink resumed>) = 0 [pid 5265] chdir("./bus" [pid 5267] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5266] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5267] <... creat resumed>) = 4 [pid 5265] <... chdir resumed>) = 0 [pid 5263] <... creat resumed>) = 4 [pid 5265] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5263] rename("./bus", "./file2" [pid 5267] rename("./bus", "./file2" [pid 5266] <... creat resumed>) = 4 [pid 5265] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5264] <... symlink resumed>) = 0 [ 73.676494][ T5268] loop4: detected capacity change from 0 to 1024 [pid 5263] <... rename resumed>) = -1 EEXIST (File exists) [pid 5268] <... mount resumed>) = 0 [pid 5267] <... rename resumed>) = -1 EEXIST (File exists) [pid 5266] rename("./bus", "./file2" [pid 5264] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5267] memfd_create("syzkaller", 0 [pid 5266] <... rename resumed>) = -1 EEXIST (File exists) [pid 5265] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5268] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5267] <... memfd_create resumed>) = 5 [pid 5266] memfd_create("syzkaller", 0 [pid 5264] <... creat resumed>) = 4 [pid 5263] memfd_create("syzkaller", 0 [pid 5268] <... openat resumed>) = 3 [pid 5267] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5266] <... memfd_create resumed>) = 5 [pid 5264] rename("./bus", "./file2" [pid 5268] chdir("./bus" [pid 5267] <... mmap resumed>) = 0x7f138d200000 [pid 5266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5265] <... symlink resumed>) = 0 [pid 5264] <... rename resumed>) = -1 EEXIST (File exists) [pid 5263] <... memfd_create resumed>) = 5 [pid 5268] <... chdir resumed>) = 0 [pid 5267] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5266] <... mmap resumed>) = 0x7f138d200000 [pid 5265] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5264] memfd_create("syzkaller", 0 [pid 5263] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5268] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5266] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5264] <... memfd_create resumed>) = 5 [pid 5263] <... mmap resumed>) = 0x7f138d200000 [pid 5268] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5267] <... write resumed>) = 524288 [pid 5265] <... creat resumed>) = 4 [pid 5264] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5263] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5268] <... symlink resumed>) = 0 [pid 5265] rename("./bus", "./file2" [pid 5264] <... mmap resumed>) = 0x7f138d200000 [pid 5268] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5266] <... write resumed>) = 524288 [pid 5265] <... rename resumed>) = -1 EEXIST (File exists) [pid 5264] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5265] memfd_create("syzkaller", 0) = 5 [pid 5267] munmap(0x7f138d200000, 138412032 [pid 5265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5264] <... write resumed>) = 524288 [pid 5268] <... creat resumed>) = 4 [pid 5267] <... munmap resumed>) = 0 [pid 5266] munmap(0x7f138d200000, 138412032 [pid 5265] <... mmap resumed>) = 0x7f138d200000 [pid 5267] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5266] <... munmap resumed>) = 0 [pid 5267] close(5 [pid 5268] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5267] <... close resumed>) = 0 [pid 5266] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5263] <... write resumed>) = 524288 [pid 5266] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5266] close(5 [pid 5264] munmap(0x7f138d200000, 138412032 [pid 5268] memfd_create("syzkaller", 0 [pid 5265] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5264] <... munmap resumed>) = 0 [pid 5263] munmap(0x7f138d200000, 138412032 [pid 5268] <... memfd_create resumed>) = 5 [pid 5268] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5264] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5263] <... munmap resumed>) = 0 [pid 5264] close(5 [pid 5267] creat("./file1", 000 [pid 5263] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5266] <... close resumed>) = 0 [pid 5263] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5268] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5266] creat("./file1", 000 [pid 5265] <... write resumed>) = 524288 [pid 5263] close(5 [pid 5267] <... creat resumed>) = 5 [pid 5267] exit_group(0 [pid 5263] <... close resumed>) = 0 [pid 5265] munmap(0x7f138d200000, 138412032 [pid 5267] <... exit_group resumed>) = ? [pid 5266] <... creat resumed>) = 5 [pid 5265] <... munmap resumed>) = 0 [pid 5264] <... close resumed>) = 0 [pid 5268] <... write resumed>) = 524288 [pid 5267] +++ exited with 0 +++ [pid 5266] exit_group(0 [pid 5265] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5264] creat("./file1", 000 [pid 5263] creat("./file1", 000 [pid 5266] <... exit_group resumed>) = ? [pid 5265] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5267, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5268] munmap(0x7f138d200000, 138412032 [pid 5265] close(5 [pid 5268] <... munmap resumed>) = 0 [pid 5266] +++ exited with 0 +++ [pid 5265] <... close resumed>) = 0 [pid 5264] <... creat resumed>) = 5 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5266, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... restart_syscall resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5264] exit_group(0 [pid 5056] <... openat resumed>) = 3 [pid 5268] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5264] <... exit_group resumed>) = ? [pid 5056] newfstatat(3, "", [pid 5268] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5265] creat("./file1", 000 [pid 5264] +++ exited with 0 +++ [pid 5263] <... creat resumed>) = 5 [pid 5058] umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5268] close(5 [pid 5263] exit_group(0 [pid 5056] getdents64(3, [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5264, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5056] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... restart_syscall resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5268] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5263] <... exit_group resumed>) = ? [pid 5059] umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(3, "", [pid 5059] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5265] <... creat resumed>) = 5 [pid 5059] newfstatat(3, "", [pid 5058] getdents64(3, [pid 5265] exit_group(0 [pid 5263] +++ exited with 0 +++ [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5265] <... exit_group resumed>) = ? [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5263, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5059] getdents64(3, [pid 5058] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5268] creat("./file1", 000 [pid 5059] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = 0 [pid 5061] umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5061] newfstatat(3, "", [pid 5056] <... umount2 resumed>) = 0 [pid 5265] +++ exited with 0 +++ [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5265, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5268] <... creat resumed>) = 5 [pid 5061] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = 0 [pid 5058] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5268] exit_group(0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5268] <... exit_group resumed>) = ? [pid 5058] newfstatat(AT_FDCWD, "./32/bus", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... openat resumed>) = 3 [pid 5056] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] newfstatat(3, "", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(AT_FDCWD, "./32/bus", [pid 5268] +++ exited with 0 +++ [pid 5059] newfstatat(AT_FDCWD, "./33/bus", [pid 5058] newfstatat(4, "", [pid 5057] getdents64(3, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5268, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5059] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(4, [pid 5057] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] getdents64(4, [pid 5056] <... openat resumed>) = 4 [pid 5060] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... openat resumed>) = 4 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(4, "", [pid 5060] <... openat resumed>) = 3 [pid 5059] newfstatat(4, "", [pid 5058] close(4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] newfstatat(3, "", [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... close resumed>) = 0 [pid 5056] getdents64(4, [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, [pid 5058] rmdir("./32/bus" [pid 5061] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] getdents64(3, [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... rmdir resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4 [pid 5059] getdents64(4, [pid 5060] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5056] rmdir("./32/bus" [pid 5059] <... close resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5061] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = 0 [pid 5059] rmdir("./33/bus" [pid 5058] umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./32/binderfs", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... rmdir resumed>) = 0 [pid 5059] umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./33/binderfs") = 0 [pid 5059] getdents64(3, [pid 5061] newfstatat(AT_FDCWD, "./34/bus", [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(AT_FDCWD, "./33/bus", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] newfstatat(AT_FDCWD, "./31/bus", [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] newfstatat(AT_FDCWD, "./32/binderfs", [pid 5061] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] close(3 [pid 5057] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] unlink("./32/binderfs" [pid 5061] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] rmdir("./33" [pid 5057] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... unlink resumed>) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5060] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... rmdir resumed>) = 0 [pid 5058] unlink("./32/binderfs" [pid 5057] <... openat resumed>) = 4 [pid 5058] <... unlink resumed>) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5061] newfstatat(4, "", [pid 5060] <... openat resumed>) = 4 [pid 5059] mkdir("./34", 0777 [pid 5057] newfstatat(4, "", [pid 5056] getdents64(3, [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] newfstatat(4, "", [pid 5058] <... close resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] getdents64(4, [pid 5059] <... mkdir resumed>) = 0 [pid 5058] rmdir("./32" [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5056] close(3 [pid 5060] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... rmdir resumed>) = 0 [pid 5057] getdents64(4, [pid 5056] rmdir("./32" [pid 5061] getdents64(4, [pid 5060] getdents64(4, [pid 5059] <... openat resumed>) = 3 [pid 5058] mkdir("./33", 0777 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5057] close(4 [pid 5061] close(4 [pid 5060] close(4 [pid 5057] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5057] rmdir("./33/bus" [pid 5061] rmdir("./34/bus" [pid 5060] rmdir("./31/bus" [pid 5057] <... rmdir resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] mkdir("./33", 0777 [pid 5060] umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... mkdir resumed>) = 0 [pid 5057] umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... mkdir resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./31/binderfs", [pid 5057] newfstatat(AT_FDCWD, "./33/binderfs", [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] unlink("./31/binderfs" [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] <... unlink resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5057] unlink("./33/binderfs" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(3, [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... unlink resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5061] newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] getdents64(3, [pid 5061] unlink("./34/binderfs" [pid 5060] close(3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5061] <... unlink resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... close resumed>) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./33" [pid 5061] getdents64(3, [pid 5060] rmdir("./31" [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5061] close(3) = 0 [pid 5061] rmdir("./34" [pid 5060] <... rmdir resumed>) = 0 [pid 5057] mkdir("./34", 0777 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] mkdir("./32", 0777 [pid 5061] mkdir("./35", 0777 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... ioctl resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] close(3) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5269 attached [pid 5056] <... ioctl resumed>) = 0 [pid 5269] set_robust_list(0x555556c07660, 24) = 0 [pid 5269] chdir("./34" [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5269 [pid 5269] <... chdir resumed>) = 0 [pid 5269] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5269] setpgid(0, 0) = 0 [pid 5269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5056] close(3) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5269] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5270 attached [pid 5269] write(3, "1000", 4) = 4 [pid 5269] close(3) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5270 [pid 5269] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5269] memfd_create("syzkaller", 0) = 3 [pid 5269] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5270] set_robust_list(0x555556c07660, 24 [pid 5060] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5058] close(3 [pid 5270] <... set_robust_list resumed>) = 0 [pid 5269] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... close resumed>) = 0 [pid 5270] chdir("./33" [pid 5269] 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"..., 524288 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] close(3 [pid 5057] close(3 [pid 5060] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5271 attached [pid 5270] <... chdir resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5272 attached [pid 5272] set_robust_list(0x555556c07660, 24) = 0 [pid 5272] chdir("./34" [pid 5270] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5271 [pid 5272] <... chdir resumed>) = 0 [pid 5271] set_robust_list(0x555556c07660, 24 [pid 5270] <... prctl resumed>) = 0 [pid 5272] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5271] <... set_robust_list resumed>) = 0 [pid 5270] setpgid(0, 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5273 [pid 5272] <... prctl resumed>) = 0 [pid 5271] chdir("./33" [pid 5270] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5273 attached [pid 5272] setpgid(0, 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5272 [pid 5272] <... setpgid resumed>) = 0 [pid 5270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5269] <... write resumed>) = 524288 [pid 5271] <... chdir resumed>) = 0 [pid 5273] set_robust_list(0x555556c07660, 24 [pid 5272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5271] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5270] <... openat resumed>) = 3 [pid 5061] close(3 [pid 5273] <... set_robust_list resumed>) = 0 [pid 5273] chdir("./32" [pid 5271] <... prctl resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5272] <... openat resumed>) = 3 [pid 5272] write(3, "1000", 4) = 4 [pid 5271] setpgid(0, 0 [pid 5273] <... chdir resumed>) = 0 [pid 5270] write(3, "1000", 4 [pid 5272] close(3 [pid 5273] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5272] <... close resumed>) = 0 [pid 5271] <... setpgid resumed>) = 0 [pid 5270] <... write resumed>) = 4 [pid 5272] symlink("/dev/binderfs", "./binderfs" [pid 5270] close(3 [pid 5273] <... prctl resumed>) = 0 [pid 5272] <... symlink resumed>) = 0 [pid 5271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5270] <... close resumed>) = 0 [pid 5273] setpgid(0, 0 [pid 5272] memfd_create("syzkaller", 0 [pid 5270] symlink("/dev/binderfs", "./binderfs" [pid 5272] <... memfd_create resumed>) = 3 [pid 5271] <... openat resumed>) = 3 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5274 ./strace-static-x86_64: Process 5274 attached [pid 5273] <... setpgid resumed>) = 0 [pid 5272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5270] <... symlink resumed>) = 0 [pid 5274] set_robust_list(0x555556c07660, 24 [pid 5273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5272] <... mmap resumed>) = 0x7f138d200000 [pid 5269] munmap(0x7f138d200000, 138412032 [pid 5274] <... set_robust_list resumed>) = 0 [pid 5273] <... openat resumed>) = 3 [pid 5271] write(3, "1000", 4 [pid 5270] memfd_create("syzkaller", 0 [pid 5273] write(3, "1000", 4 [pid 5271] <... write resumed>) = 4 [pid 5270] <... memfd_create resumed>) = 3 [pid 5269] <... munmap resumed>) = 0 [pid 5274] chdir("./35" [pid 5273] <... write resumed>) = 4 [pid 5271] close(3 [pid 5270] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5274] <... chdir resumed>) = 0 [pid 5273] close(3 [pid 5269] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5274] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5269] <... openat resumed>) = 4 [pid 5274] <... prctl resumed>) = 0 [pid 5272] 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"..., 524288 [pid 5269] ioctl(4, LOOP_SET_FD, 3 [pid 5274] setpgid(0, 0 [pid 5273] <... close resumed>) = 0 [pid 5272] <... write resumed>) = 524288 [pid 5271] <... close resumed>) = 0 [pid 5270] <... mmap resumed>) = 0x7f138d200000 [pid 5274] <... setpgid resumed>) = 0 [pid 5274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5273] symlink("/dev/binderfs", "./binderfs" [pid 5271] symlink("/dev/binderfs", "./binderfs" [pid 5270] 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"..., 524288 [pid 5274] write(3, "1000", 4) = 4 [pid 5273] <... symlink resumed>) = 0 [pid 5271] <... symlink resumed>) = 0 [pid 5274] close(3 [pid 5272] munmap(0x7f138d200000, 138412032 [pid 5274] <... close resumed>) = 0 [pid 5274] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5272] <... munmap resumed>) = 0 [pid 5274] memfd_create("syzkaller", 0 [pid 5273] memfd_create("syzkaller", 0 [pid 5271] memfd_create("syzkaller", 0 [pid 5270] <... write resumed>) = 524288 [pid 5269] <... ioctl resumed>) = 0 [pid 5274] <... memfd_create resumed>) = 3 [pid 5273] <... memfd_create resumed>) = 3 [pid 5271] <... memfd_create resumed>) = 3 [pid 5274] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5273] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [ 74.118886][ T5269] loop3: detected capacity change from 0 to 1024 [pid 5272] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5271] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5269] close(3 [pid 5274] <... mmap resumed>) = 0x7f138d200000 [pid 5273] <... mmap resumed>) = 0x7f138d200000 [pid 5272] <... openat resumed>) = 4 [pid 5272] ioctl(4, LOOP_SET_FD, 3 [pid 5271] <... mmap resumed>) = 0x7f138d200000 [pid 5271] 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"..., 524288 [pid 5273] 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"..., 524288 [pid 5269] <... close resumed>) = 0 [pid 5269] close(4) = 0 [pid 5269] mkdir("./bus", 0777) = 0 [pid 5269] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5274] 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"..., 524288) = 524288 [pid 5273] <... write resumed>) = 524288 [pid 5271] <... write resumed>) = 524288 [pid 5270] munmap(0x7f138d200000, 138412032 [pid 5273] munmap(0x7f138d200000, 138412032 [pid 5274] munmap(0x7f138d200000, 138412032 [pid 5273] <... munmap resumed>) = 0 [pid 5272] <... ioctl resumed>) = 0 [pid 5271] munmap(0x7f138d200000, 138412032 [pid 5270] <... munmap resumed>) = 0 [pid 5274] <... munmap resumed>) = 0 [pid 5273] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5272] close(3 [pid 5271] <... munmap resumed>) = 0 [pid 5270] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5273] <... openat resumed>) = 4 [pid 5272] <... close resumed>) = 0 [pid 5272] close(4 [pid 5270] <... openat resumed>) = 4 [pid 5274] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5272] <... close resumed>) = 0 [pid 5269] <... mount resumed>) = 0 [pid 5271] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5273] ioctl(4, LOOP_SET_FD, 3 [pid 5272] mkdir("./bus", 0777 [ 74.166377][ T5272] loop1: detected capacity change from 0 to 1024 [pid 5270] ioctl(4, LOOP_SET_FD, 3 [pid 5274] <... openat resumed>) = 4 [pid 5272] <... mkdir resumed>) = 0 [pid 5269] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5272] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5274] ioctl(4, LOOP_SET_FD, 3 [pid 5273] <... ioctl resumed>) = 0 [pid 5271] <... openat resumed>) = 4 [pid 5269] <... openat resumed>) = 3 [pid 5273] close(3) = 0 [pid 5273] close(4) = 0 [pid 5271] ioctl(4, LOOP_SET_FD, 3 [pid 5269] chdir("./bus" [pid 5270] <... ioctl resumed>) = 0 [pid 5274] <... ioctl resumed>) = 0 [pid 5273] mkdir("./bus", 0777 [pid 5272] <... mount resumed>) = 0 [pid 5271] <... ioctl resumed>) = 0 [pid 5270] close(3 [pid 5269] <... chdir resumed>) = 0 [pid 5274] close(3 [pid 5273] <... mkdir resumed>) = 0 [pid 5272] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5271] close(3 [pid 5270] <... close resumed>) = 0 [pid 5269] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5274] <... close resumed>) = 0 [pid 5273] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5272] <... openat resumed>) = 3 [pid 5270] close(4 [pid 5269] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5274] close(4 [pid 5271] <... close resumed>) = 0 [pid 5269] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5274] <... close resumed>) = 0 [pid 5271] close(4 [pid 5270] <... close resumed>) = 0 [pid 5271] <... close resumed>) = 0 [pid 5274] mkdir("./bus", 0777 [pid 5273] <... mount resumed>) = 0 [pid 5272] chdir("./bus" [pid 5271] mkdir("./bus", 0777 [pid 5270] mkdir("./bus", 0777 [pid 5269] <... symlink resumed>) = 0 [pid 5269] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5273] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5272] <... chdir resumed>) = 0 [pid 5273] <... openat resumed>) = 3 [pid 5272] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5273] chdir("./bus" [pid 5272] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5271] <... mkdir resumed>) = 0 [pid 5273] <... chdir resumed>) = 0 [pid 5272] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5274] <... mkdir resumed>) = 0 [pid 5273] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5271] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5270] <... mkdir resumed>) = 0 [pid 5269] <... creat resumed>) = 4 [pid 5274] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5273] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5272] <... symlink resumed>) = 0 [pid 5269] rename("./bus", "./file2" [pid 5273] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5272] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5270] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5273] <... symlink resumed>) = 0 [pid 5272] <... creat resumed>) = 4 [pid 5269] <... rename resumed>) = -1 EEXIST (File exists) [ 74.207191][ T5273] loop4: detected capacity change from 0 to 1024 [ 74.214706][ T5270] loop0: detected capacity change from 0 to 1024 [ 74.221983][ T5274] loop5: detected capacity change from 0 to 1024 [ 74.229546][ T5271] loop2: detected capacity change from 0 to 1024 [pid 5273] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5272] rename("./bus", "./file2" [pid 5271] <... mount resumed>) = 0 [pid 5270] <... mount resumed>) = 0 [pid 5269] memfd_create("syzkaller", 0 [pid 5274] <... mount resumed>) = 0 [pid 5272] <... rename resumed>) = -1 EEXIST (File exists) [pid 5271] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5270] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5269] <... memfd_create resumed>) = 5 [pid 5274] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5273] <... creat resumed>) = 4 [pid 5272] memfd_create("syzkaller", 0 [pid 5269] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5274] <... openat resumed>) = 3 [pid 5273] rename("./bus", "./file2" [pid 5272] <... memfd_create resumed>) = 5 [pid 5271] <... openat resumed>) = 3 [pid 5270] <... openat resumed>) = 3 [pid 5269] <... mmap resumed>) = 0x7f138d200000 [pid 5274] chdir("./bus" [pid 5271] chdir("./bus" [pid 5270] chdir("./bus" [pid 5274] <... chdir resumed>) = 0 [pid 5273] <... rename resumed>) = -1 EEXIST (File exists) [pid 5272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5271] <... chdir resumed>) = 0 [pid 5270] <... chdir resumed>) = 0 [pid 5274] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5273] memfd_create("syzkaller", 0 [pid 5272] <... mmap resumed>) = 0x7f138d200000 [pid 5271] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5270] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5274] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5273] <... memfd_create resumed>) = 5 [pid 5272] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5271] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5270] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5269] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5274] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5271] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5270] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5273] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5273] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5272] <... write resumed>) = 524288 [pid 5269] <... write resumed>) = 524288 [pid 5274] <... symlink resumed>) = 0 [pid 5273] <... write resumed>) = 524288 [pid 5272] munmap(0x7f138d200000, 138412032 [pid 5270] <... symlink resumed>) = 0 [pid 5274] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5270] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5272] <... munmap resumed>) = 0 [pid 5272] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5271] <... symlink resumed>) = 0 [pid 5272] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5271] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5273] munmap(0x7f138d200000, 138412032 [pid 5272] close(5 [pid 5274] <... creat resumed>) = 4 [pid 5273] <... munmap resumed>) = 0 [pid 5272] <... close resumed>) = 0 [pid 5270] <... creat resumed>) = 4 [pid 5269] munmap(0x7f138d200000, 138412032 [pid 5274] rename("./bus", "./file2" [pid 5270] rename("./bus", "./file2" [pid 5273] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5271] <... creat resumed>) = 4 [pid 5269] <... munmap resumed>) = 0 [pid 5273] close(5 [pid 5274] <... rename resumed>) = -1 EEXIST (File exists) [pid 5273] <... close resumed>) = 0 [pid 5271] rename("./bus", "./file2" [pid 5269] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5274] memfd_create("syzkaller", 0 [pid 5270] <... rename resumed>) = -1 EEXIST (File exists) [pid 5272] creat("./file1", 000 [pid 5270] memfd_create("syzkaller", 0 [pid 5274] <... memfd_create resumed>) = 5 [pid 5272] <... creat resumed>) = 5 [pid 5269] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5274] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5270] <... memfd_create resumed>) = 5 [pid 5269] close(5 [pid 5274] <... mmap resumed>) = 0x7f138d200000 [pid 5272] exit_group(0) = ? [pid 5270] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5272] +++ exited with 0 +++ [pid 5274] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5273] creat("./file1", 000 [pid 5271] <... rename resumed>) = -1 EEXIST (File exists) [pid 5270] <... mmap resumed>) = 0x7f138d200000 [pid 5269] <... close resumed>) = 0 [pid 5271] memfd_create("syzkaller", 0 [pid 5270] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5272, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5274] <... write resumed>) = 524288 [pid 5271] <... memfd_create resumed>) = 5 [pid 5269] creat("./file1", 000 [pid 5057] umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5271] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5273] <... creat resumed>) = 5 [pid 5271] <... mmap resumed>) = 0x7f138d200000 [pid 5057] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5269] <... creat resumed>) = 5 [pid 5057] <... openat resumed>) = 3 [pid 5273] exit_group(0 [pid 5269] exit_group(0 [pid 5273] <... exit_group resumed>) = ? [pid 5273] +++ exited with 0 +++ [pid 5269] <... exit_group resumed>) = ? [pid 5057] newfstatat(3, "", [pid 5270] <... write resumed>) = 524288 [pid 5269] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5273, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5270] munmap(0x7f138d200000, 138412032 [pid 5060] umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5274] munmap(0x7f138d200000, 138412032 [pid 5271] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5269, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(3, [pid 5060] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] newfstatat(3, "", [pid 5274] <... munmap resumed>) = 0 [pid 5271] <... write resumed>) = 524288 [pid 5270] <... munmap resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5057] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(3, [pid 5059] newfstatat(3, "", [pid 5274] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5274] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5270] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5274] close(5 [pid 5270] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5274] <... close resumed>) = 0 [pid 5270] close(5 [pid 5060] <... umount2 resumed>) = 0 [pid 5059] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5271] munmap(0x7f138d200000, 138412032 [pid 5060] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = 0 [pid 5271] <... munmap resumed>) = 0 [pid 5274] creat("./file1", 000 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5271] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5270] <... close resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./32/bus", [pid 5270] creat("./file1", 000 [pid 5271] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5274] <... creat resumed>) = 5 [pid 5271] close(5 [pid 5060] umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5274] exit_group(0) = ? [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./34/bus", [pid 5060] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5274] +++ exited with 0 +++ [pid 5270] <... creat resumed>) = 5 [pid 5060] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5270] exit_group(0) = ? [pid 5271] <... close resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5274, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5060] newfstatat(4, "", [pid 5059] <... umount2 resumed>) = 0 [pid 5057] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5271] creat("./file1", 000 [pid 5270] +++ exited with 0 +++ [pid 5061] umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(4, [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] newfstatat(AT_FDCWD, "./34/bus", [pid 5060] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] close(4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... close resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... openat resumed>) = 3 [pid 5060] rmdir("./32/bus" [pid 5059] <... openat resumed>) = 4 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5270, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5061] newfstatat(3, "", [pid 5060] <... rmdir resumed>) = 0 [pid 5059] newfstatat(4, "", [pid 5057] <... openat resumed>) = 4 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5271] <... creat resumed>) = 5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] newfstatat(4, "", [pid 5056] <... restart_syscall resumed>) = 0 [pid 5061] getdents64(3, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(4, [pid 5271] exit_group(0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] newfstatat(AT_FDCWD, "./32/binderfs", [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5271] <... exit_group resumed>) = ? [pid 5061] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] getdents64(4, [pid 5057] getdents64(4, [pid 5060] unlink("./32/binderfs" [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(4, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] getdents64(3, [pid 5059] close(4 [pid 5271] +++ exited with 0 +++ [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] <... close resumed>) = 0 [pid 5057] close(4 [pid 5056] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] close(3 [pid 5059] rmdir("./34/bus" [pid 5057] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5271, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5057] rmdir("./34/bus" [pid 5056] newfstatat(3, "", [pid 5060] <... close resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] rmdir("./32" [pid 5059] umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... restart_syscall resumed>) = 0 [pid 5057] umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] newfstatat(AT_FDCWD, "./34/binderfs", [pid 5058] umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./34/binderfs" [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... unlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5061] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] mkdir("./33", 0777 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./35/bus", [pid 5060] <... mkdir resumed>) = 0 [pid 5059] unlink("./34/binderfs" [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", [pid 5057] close(3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... close resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] getdents64(3, [pid 5057] rmdir("./34" [pid 5061] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5059] <... unlink resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./33/bus", [pid 5061] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... openat resumed>) = 4 [pid 5059] getdents64(3, [pid 5057] mkdir("./35", 0777 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] newfstatat(4, "", [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] close(3 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5061] getdents64(4, [pid 5059] <... close resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] rmdir("./34" [pid 5058] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] getdents64(4, [pid 5059] <... rmdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5059] mkdir("./35", 0777 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... mkdir resumed>) = 0 [pid 5056] getdents64(4, [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] newfstatat(AT_FDCWD, "./33/bus", [pid 5061] close(4 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... close resumed>) = 0 [pid 5058] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] rmdir("./35/bus" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] close(4 [pid 5059] <... openat resumed>) = 3 [pid 5056] <... close resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] <... openat resumed>) = 4 [pid 5056] rmdir("./33/bus" [pid 5061] <... rmdir resumed>) = 0 [pid 5058] newfstatat(4, "", [pid 5061] umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(4, [pid 5061] newfstatat(AT_FDCWD, "./35/binderfs", [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5061] unlink("./35/binderfs" [pid 5058] <... close resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5058] rmdir("./33/bus" [pid 5056] umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] getdents64(3, [pid 5058] <... rmdir resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./33/binderfs") = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5058] umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] close(3 [pid 5060] close(3 [pid 5059] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... close resumed>) = 0 [pid 5058] unlink("./33/binderfs" [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... unlink resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] close(3 [pid 5061] rmdir("./35" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] rmdir("./33"./strace-static-x86_64: Process 5275 attached [pid 5061] <... rmdir resumed>) = 0 [pid 5059] close(3 [pid 5058] close(3 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... rmdir resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... close resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5275 [pid 5058] rmdir("./33") = 0 [pid 5058] mkdir("./34", 0777) = 0 ./strace-static-x86_64: Process 5277 attached ./strace-static-x86_64: Process 5276 attached [pid 5275] set_robust_list(0x555556c07660, 24 [pid 5061] mkdir("./36", 0777 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5276 [pid 5056] mkdir("./34", 0777 [pid 5275] <... set_robust_list resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5275] chdir("./33" [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5276] set_robust_list(0x555556c07660, 24 [pid 5275] <... chdir resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5277 [pid 5056] <... mkdir resumed>) = 0 [pid 5275] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... mkdir resumed>) = 0 [pid 5275] <... prctl resumed>) = 0 [pid 5275] setpgid(0, 0) = 0 [pid 5276] <... set_robust_list resumed>) = 0 [pid 5275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5276] chdir("./35" [pid 5275] write(3, "1000", 4 [pid 5276] <... chdir resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5276] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5277] set_robust_list(0x555556c07660, 24 [pid 5276] <... prctl resumed>) = 0 [pid 5275] <... write resumed>) = 4 [pid 5061] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5277] <... set_robust_list resumed>) = 0 [pid 5276] setpgid(0, 0 [pid 5275] close(3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5277] chdir("./35" [pid 5276] <... setpgid resumed>) = 0 [pid 5275] <... close resumed>) = 0 [pid 5276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5275] symlink("/dev/binderfs", "./binderfs" [pid 5277] <... chdir resumed>) = 0 [pid 5275] <... symlink resumed>) = 0 [pid 5277] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5276] <... openat resumed>) = 3 [pid 5277] <... prctl resumed>) = 0 [pid 5276] write(3, "1000", 4 [pid 5275] memfd_create("syzkaller", 0 [pid 5277] setpgid(0, 0 [pid 5276] <... write resumed>) = 4 [pid 5277] <... setpgid resumed>) = 0 [pid 5276] close(3) = 0 [pid 5275] <... memfd_create resumed>) = 3 [pid 5276] symlink("/dev/binderfs", "./binderfs" [pid 5275] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5275] <... mmap resumed>) = 0x7f138d200000 [pid 5277] write(3, "1000", 4 [pid 5276] <... symlink resumed>) = 0 [pid 5275] 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"..., 524288 [pid 5277] <... write resumed>) = 4 [pid 5277] close(3) = 0 [pid 5277] symlink("/dev/binderfs", "./binderfs" [pid 5276] memfd_create("syzkaller", 0 [pid 5277] <... symlink resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5277] memfd_create("syzkaller", 0./strace-static-x86_64: Process 5278 attached [pid 5278] set_robust_list(0x555556c07660, 24 [pid 5277] <... memfd_create resumed>) = 3 [pid 5276] <... memfd_create resumed>) = 3 [pid 5278] <... set_robust_list resumed>) = 0 [pid 5278] chdir("./34" [pid 5277] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5278] <... chdir resumed>) = 0 [pid 5277] <... mmap resumed>) = 0x7f138d200000 [pid 5276] <... mmap resumed>) = 0x7f138d200000 [pid 5275] <... write resumed>) = 524288 [pid 5056] <... ioctl resumed>) = 0 [pid 5278] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5277] 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"..., 524288 [pid 5276] 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"..., 524288 [pid 5275] munmap(0x7f138d200000, 138412032 [pid 5061] <... ioctl resumed>) = 0 [pid 5056] close(3 [pid 5061] close(3 [pid 5056] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5278] <... prctl resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5278 [pid 5275] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 5279 attached ./strace-static-x86_64: Process 5280 attached [pid 5278] setpgid(0, 0 [pid 5277] <... write resumed>) = 524288 [pid 5276] <... write resumed>) = 524288 [pid 5275] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5280 [pid 5279] set_robust_list(0x555556c07660, 24 [pid 5280] set_robust_list(0x555556c07660, 24 [pid 5278] <... setpgid resumed>) = 0 [pid 5279] <... set_robust_list resumed>) = 0 [pid 5278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5279 [pid 5279] chdir("./34" [pid 5280] <... set_robust_list resumed>) = 0 [pid 5278] <... openat resumed>) = 3 [pid 5279] <... chdir resumed>) = 0 [pid 5280] chdir("./36" [pid 5278] write(3, "1000", 4 [pid 5276] munmap(0x7f138d200000, 138412032 [pid 5275] <... openat resumed>) = 4 [pid 5279] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5280] <... chdir resumed>) = 0 [pid 5278] <... write resumed>) = 4 [pid 5277] munmap(0x7f138d200000, 138412032 [pid 5276] <... munmap resumed>) = 0 [pid 5275] ioctl(4, LOOP_SET_FD, 3 [pid 5279] <... prctl resumed>) = 0 [pid 5280] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5278] close(3 [pid 5277] <... munmap resumed>) = 0 [pid 5276] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5275] <... ioctl resumed>) = 0 [pid 5279] setpgid(0, 0 [pid 5280] <... prctl resumed>) = 0 [pid 5278] <... close resumed>) = 0 [pid 5277] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5276] <... openat resumed>) = 4 [pid 5275] close(3 [pid 5279] <... setpgid resumed>) = 0 [pid 5280] setpgid(0, 0 [pid 5278] symlink("/dev/binderfs", "./binderfs" [pid 5276] ioctl(4, LOOP_SET_FD, 3 [pid 5275] <... close resumed>) = 0 [pid 5280] <... setpgid resumed>) = 0 [pid 5277] <... openat resumed>) = 4 [pid 5275] close(4 [pid 5280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5275] <... close resumed>) = 0 [pid 5280] <... openat resumed>) = 3 [pid 5277] ioctl(4, LOOP_SET_FD, 3 [pid 5275] mkdir("./bus", 0777 [pid 5280] write(3, "1000", 4) = 4 [pid 5278] <... symlink resumed>) = 0 [pid 5280] close(3 [pid 5275] <... mkdir resumed>) = 0 [pid 5280] <... close resumed>) = 0 [pid 5280] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5280] memfd_create("syzkaller", 0 [pid 5275] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5280] <... memfd_create resumed>) = 3 [pid 5280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5280] <... mmap resumed>) = 0x7f138d200000 [pid 5279] <... openat resumed>) = 3 [pid 5280] 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"..., 524288 [pid 5278] memfd_create("syzkaller", 0 [pid 5279] write(3, "1000", 4 [pid 5278] <... memfd_create resumed>) = 3 [pid 5279] <... write resumed>) = 4 [pid 5278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5275] <... mount resumed>) = 0 [pid 5279] close(3 [pid 5278] <... mmap resumed>) = 0x7f138d200000 [pid 5275] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5279] <... close resumed>) = 0 [pid 5275] <... openat resumed>) = 3 [pid 5275] chdir("./bus") = 0 [pid 5279] symlink("/dev/binderfs", "./binderfs" [pid 5280] <... write resumed>) = 524288 [pid 5278] 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"..., 524288 [pid 5277] <... ioctl resumed>) = 0 [pid 5275] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5279] <... symlink resumed>) = 0 [pid 5277] close(3 [pid 5275] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5277] <... close resumed>) = 0 [pid 5275] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5279] memfd_create("syzkaller", 0 [pid 5277] close(4 [pid 5275] <... symlink resumed>) = 0 [pid 5279] <... memfd_create resumed>) = 3 [pid 5277] <... close resumed>) = 0 [pid 5275] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5279] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5277] mkdir("./bus", 0777 [pid 5275] <... creat resumed>) = 4 [pid 5277] <... mkdir resumed>) = 0 [pid 5275] rename("./bus", "./file2" [pid 5279] <... mmap resumed>) = 0x7f138d200000 [pid 5277] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5275] <... rename resumed>) = -1 EEXIST (File exists) [pid 5275] memfd_create("syzkaller", 0 [pid 5279] 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"..., 524288 [pid 5280] munmap(0x7f138d200000, 138412032 [pid 5275] <... memfd_create resumed>) = 5 [pid 5280] <... munmap resumed>) = 0 [pid 5278] <... write resumed>) = 524288 [pid 5277] <... mount resumed>) = 0 [pid 5275] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5280] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5278] munmap(0x7f138d200000, 138412032 [pid 5277] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5276] <... ioctl resumed>) = 0 [pid 5275] <... mmap resumed>) = 0x7f138d200000 [pid 5280] <... openat resumed>) = 4 [pid 5277] <... openat resumed>) = 3 [pid 5276] close(3 [ 74.657017][ T5275] loop4: detected capacity change from 0 to 1024 [ 74.674149][ T5277] loop3: detected capacity change from 0 to 1024 [ 74.676208][ T5276] loop1: detected capacity change from 0 to 1024 [pid 5275] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5280] ioctl(4, LOOP_SET_FD, 3 [pid 5277] chdir("./bus" [pid 5276] <... close resumed>) = 0 [pid 5277] <... chdir resumed>) = 0 [pid 5276] close(4 [pid 5277] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5276] <... close resumed>) = 0 [pid 5279] <... write resumed>) = 524288 [pid 5278] <... munmap resumed>) = 0 [pid 5277] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5278] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5277] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5276] mkdir("./bus", 0777 [pid 5278] ioctl(4, LOOP_SET_FD, 3 [pid 5277] <... symlink resumed>) = 0 [pid 5276] <... mkdir resumed>) = 0 [pid 5277] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 4 [pid 5276] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5277] rename("./bus", "./file2" [pid 5279] munmap(0x7f138d200000, 138412032 [pid 5278] <... ioctl resumed>) = 0 [pid 5276] <... mount resumed>) = 0 [pid 5278] close(3 [pid 5276] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5279] <... munmap resumed>) = 0 [pid 5276] chdir("./bus" [pid 5279] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5278] <... close resumed>) = 0 [pid 5276] <... chdir resumed>) = 0 [pid 5275] <... write resumed>) = 524288 [pid 5279] <... openat resumed>) = 4 [pid 5278] close(4 [pid 5277] <... rename resumed>) = -1 EEXIST (File exists) [pid 5276] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5279] ioctl(4, LOOP_SET_FD, 3 [pid 5278] <... close resumed>) = 0 [pid 5276] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5275] munmap(0x7f138d200000, 138412032 [pid 5278] mkdir("./bus", 0777 [pid 5277] memfd_create("syzkaller", 0 [pid 5276] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5277] <... memfd_create resumed>) = 5 [pid 5276] <... symlink resumed>) = 0 [pid 5277] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5276] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5277] <... mmap resumed>) = 0x7f138d200000 [pid 5280] <... ioctl resumed>) = 0 [pid 5280] close(3 [pid 5278] <... mkdir resumed>) = 0 [pid 5280] <... close resumed>) = 0 [pid 5276] <... creat resumed>) = 4 [pid 5275] <... munmap resumed>) = 0 [pid 5280] close(4 [pid 5277] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5276] rename("./bus", "./file2" [pid 5280] <... close resumed>) = 0 [pid 5275] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5280] mkdir("./bus", 0777 [pid 5278] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5276] <... rename resumed>) = -1 EEXIST (File exists) [pid 5275] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5280] <... mkdir resumed>) = 0 [pid 5277] <... write resumed>) = 524288 [pid 5276] memfd_create("syzkaller", 0 [pid 5280] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5276] <... memfd_create resumed>) = 5 [pid 5275] close(5 [pid 5276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5275] <... close resumed>) = 0 [pid 5276] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5279] <... ioctl resumed>) = 0 [pid 5279] close(3) = 0 [pid 5280] <... mount resumed>) = 0 [pid 5279] close(4 [pid 5280] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5275] creat("./file1", 000 [pid 5279] <... close resumed>) = 0 [pid 5280] <... openat resumed>) = 3 [pid 5279] mkdir("./bus", 0777 [pid 5280] chdir("./bus" [pid 5277] munmap(0x7f138d200000, 138412032 [pid 5279] <... mkdir resumed>) = 0 [pid 5280] <... chdir resumed>) = 0 [pid 5279] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5280] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5278] <... mount resumed>) = 0 [pid 5277] <... munmap resumed>) = 0 [pid 5275] <... creat resumed>) = 5 [pid 5280] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5278] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5275] exit_group(0 [pid 5278] <... openat resumed>) = 3 [pid 5275] <... exit_group resumed>) = ? [ 74.734236][ T5280] loop5: detected capacity change from 0 to 1024 [ 74.745977][ T5278] loop2: detected capacity change from 0 to 1024 [ 74.760907][ T5279] loop0: detected capacity change from 0 to 1024 [pid 5278] chdir("./bus" [pid 5280] <... symlink resumed>) = 0 [pid 5277] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5276] <... write resumed>) = 524288 [pid 5275] +++ exited with 0 +++ [pid 5278] <... chdir resumed>) = 0 [pid 5278] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5277] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5275, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5277] close(5 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5278] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... restart_syscall resumed>) = 0 [pid 5279] <... mount resumed>) = 0 [pid 5278] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5277] <... close resumed>) = 0 [pid 5279] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5280] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5279] <... openat resumed>) = 3 [pid 5060] umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5279] chdir("./bus" [pid 5276] munmap(0x7f138d200000, 138412032 [pid 5060] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5279] <... chdir resumed>) = 0 [pid 5276] <... munmap resumed>) = 0 [pid 5279] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] newfstatat(3, "", [pid 5279] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5280] <... creat resumed>) = 4 [pid 5276] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5279] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5280] rename("./bus", "./file2" [pid 5276] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] getdents64(3, [pid 5277] creat("./file1", 000 [pid 5276] close(5 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5279] <... symlink resumed>) = 0 [pid 5060] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5280] <... rename resumed>) = -1 EEXIST (File exists) [pid 5280] memfd_create("syzkaller", 0 [pid 5279] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5280] <... memfd_create resumed>) = 5 [pid 5278] <... symlink resumed>) = 0 [pid 5279] <... creat resumed>) = 4 [pid 5278] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5277] <... creat resumed>) = 5 [pid 5276] <... close resumed>) = 0 [pid 5277] exit_group(0) = ? [pid 5280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5277] +++ exited with 0 +++ [pid 5279] rename("./bus", "./file2" [pid 5280] <... mmap resumed>) = 0x7f138d200000 [pid 5276] creat("./file1", 000 [pid 5279] <... rename resumed>) = -1 EEXIST (File exists) [pid 5280] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5278] <... creat resumed>) = 4 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5277, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5279] memfd_create("syzkaller", 0 [pid 5278] rename("./bus", "./file2" [pid 5276] <... creat resumed>) = 5 [pid 5059] <... restart_syscall resumed>) = 0 [pid 5276] exit_group(0 [pid 5059] umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5279] <... memfd_create resumed>) = 5 [pid 5276] <... exit_group resumed>) = ? [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5279] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5278] <... rename resumed>) = -1 EEXIST (File exists) [pid 5276] +++ exited with 0 +++ [pid 5059] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5276, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5057] umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5279] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5278] memfd_create("syzkaller", 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5280] <... write resumed>) = 524288 [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5278] <... memfd_create resumed>) = 5 [pid 5060] <... umount2 resumed>) = 0 [pid 5278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5279] <... write resumed>) = 524288 [pid 5278] <... mmap resumed>) = 0x7f138d200000 [pid 5060] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5280] munmap(0x7f138d200000, 138412032 [pid 5279] munmap(0x7f138d200000, 138412032 [pid 5280] <... munmap resumed>) = 0 [pid 5278] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./33/bus", [pid 5279] <... munmap resumed>) = 0 [pid 5280] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5279] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5279] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5280] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5279] close(5 [pid 5280] close(5) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5060] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5060] getdents64(4, [pid 5279] <... close resumed>) = 0 [pid 5280] creat("./file1", 000 [pid 5278] <... write resumed>) = 524288 [pid 5059] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = 0 [pid 5279] creat("./file1", 000 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./35/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5278] munmap(0x7f138d200000, 138412032 [pid 5060] getdents64(4, [pid 5059] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5278] <... munmap resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5278] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] close(4 [pid 5278] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... close resumed>) = 0 [pid 5059] getdents64(4, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5278] close(5 [pid 5060] rmdir("./33/bus" [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] newfstatat(AT_FDCWD, "./35/bus", [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] rmdir("./35/bus" [pid 5280] <... creat resumed>) = 5 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5280] exit_group(0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5280] <... exit_group resumed>) = ? [pid 5059] umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5279] <... creat resumed>) = 5 [pid 5280] +++ exited with 0 +++ [pid 5060] umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5280, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5059] newfstatat(AT_FDCWD, "./35/binderfs", [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5278] <... close resumed>) = 0 [pid 5061] <... restart_syscall resumed>) = 0 [pid 5278] creat("./file1", 000 [pid 5059] unlink("./35/binderfs" [pid 5057] <... openat resumed>) = 4 [pid 5279] exit_group(0 [pid 5059] <... unlink resumed>) = 0 [pid 5279] <... exit_group resumed>) = ? [pid 5059] getdents64(3, [pid 5061] umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(3 [pid 5061] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] rmdir("./35" [pid 5061] newfstatat(3, "", [pid 5059] <... rmdir resumed>) = 0 [pid 5279] +++ exited with 0 +++ [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] mkdir("./36", 0777 [pid 5061] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... mkdir resumed>) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5279, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(4, "", [pid 5278] <... creat resumed>) = 5 [pid 5060] newfstatat(AT_FDCWD, "./33/binderfs", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5057] getdents64(4, [pid 5056] <... restart_syscall resumed>) = 0 [pid 5278] exit_group(0 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... openat resumed>) = 3 [pid 5057] getdents64(4, [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(4 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] unlink("./33/binderfs" [pid 5057] rmdir("./35/bus" [pid 5056] <... openat resumed>) = 3 [pid 5061] newfstatat(AT_FDCWD, "./36/bus", [pid 5056] newfstatat(3, "", [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5057] umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5278] <... exit_group resumed>) = ? [pid 5061] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... unlink resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... openat resumed>) = 4 [pid 5057] newfstatat(AT_FDCWD, "./35/binderfs", [pid 5056] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] getdents64(4, [pid 5060] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] unlink("./35/binderfs" [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] close(3 [pid 5278] +++ exited with 0 +++ [pid 5057] <... unlink resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5278, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5061] getdents64(4, [pid 5060] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5060] rmdir("./33" [pid 5058] umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] rmdir("./36/bus") = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(3 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] mkdir("./34", 0777 [pid 5058] <... openat resumed>) = 3 [pid 5057] rmdir("./35" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] newfstatat(3, "", [pid 5057] <... rmdir resumed>) = 0 [pid 5061] unlink("./36/binderfs") = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] mkdir("./36", 0777 [pid 5056] <... umount2 resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] <... mkdir resumed>) = 0 [pid 5061] getdents64(3, [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... openat resumed>) = 3 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] close(3) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] rmdir("./36") = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] newfstatat(AT_FDCWD, "./34/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] mkdir("./37", 0777 [pid 5056] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... mkdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... umount2 resumed>) = 0 [pid 5058] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(4, "", [pid 5061] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(4, [pid 5058] newfstatat(AT_FDCWD, "./34/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] close(4 [pid 5058] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] <... close resumed>) = 0 [pid 5058] newfstatat(4, "", [pid 5056] rmdir("./34/bus") = 0 [pid 5056] umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./34/binderfs") = 0 [pid 5059] close(3) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] getdents64(3, [pid 5058] getdents64(4, [pid 5057] close(3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3./strace-static-x86_64: Process 5281 attached [pid 5060] close(3 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5281 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... close resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5058] getdents64(4, [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] rmdir("./34" [pid 5281] set_robust_list(0x555556c07660, 24 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... rmdir resumed>) = 0 [pid 5058] close(4 [pid 5281] <... set_robust_list resumed>) = 0 [pid 5281] chdir("./36" [pid 5056] mkdir("./35", 0777./strace-static-x86_64: Process 5283 attached [pid 5281] <... chdir resumed>) = 0 [pid 5061] close(3 [pid 5058] <... close resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5282 ./strace-static-x86_64: Process 5282 attached [pid 5282] set_robust_list(0x555556c07660, 24) = 0 [pid 5281] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5282] chdir("./34" [pid 5281] setpgid(0, 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5281] <... setpgid resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5282] <... chdir resumed>) = 0 [pid 5281] <... openat resumed>) = 3 [pid 5281] write(3, "1000", 4 [pid 5282] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5281] <... write resumed>) = 4 [pid 5282] <... prctl resumed>) = 0 [pid 5281] close(3 [pid 5282] setpgid(0, 0 [pid 5281] <... close resumed>) = 0 [pid 5282] <... setpgid resumed>) = 0 [pid 5281] symlink("/dev/binderfs", "./binderfs" [pid 5282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5281] <... symlink resumed>) = 0 [pid 5282] write(3, "1000", 4 [pid 5281] memfd_create("syzkaller", 0 [pid 5282] <... write resumed>) = 4 [pid 5282] close(3) = 0 [pid 5282] symlink("/dev/binderfs", "./binderfs" [pid 5283] set_robust_list(0x555556c07660, 24 [pid 5282] <... symlink resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5058] rmdir("./34/bus" [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5283 [pid 5283] <... set_robust_list resumed>) = 0 [pid 5281] <... memfd_create resumed>) = 3 [pid 5283] chdir("./36" [pid 5282] memfd_create("syzkaller", 0 [pid 5281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5283] <... chdir resumed>) = 0 [pid 5282] <... memfd_create resumed>) = 3 [pid 5281] <... mmap resumed>) = 0x7f138d200000 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... rmdir resumed>) = 0 [pid 5283] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5282] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5283] <... prctl resumed>) = 0 [pid 5283] setpgid(0, 0 [pid 5282] 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"..., 524288 [pid 5283] <... setpgid resumed>) = 0 [pid 5058] umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5281] 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"..., 524288 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5284 attached [pid 5283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] newfstatat(AT_FDCWD, "./34/binderfs", [pid 5284] set_robust_list(0x555556c07660, 24) = 0 [pid 5284] chdir("./37") = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5283] <... openat resumed>) = 3 [pid 5284] setpgid(0, 0 [pid 5058] unlink("./34/binderfs" [pid 5284] <... setpgid resumed>) = 0 [pid 5284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... unlink resumed>) = 0 [pid 5283] write(3, "1000", 4 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5284 [pid 5056] <... ioctl resumed>) = 0 [pid 5284] <... openat resumed>) = 3 [pid 5283] <... write resumed>) = 4 [pid 5282] <... write resumed>) = 524288 [pid 5058] getdents64(3, [pid 5283] close(3) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5283] symlink("/dev/binderfs", "./binderfs" [pid 5058] <... close resumed>) = 0 [pid 5284] write(3, "1000", 4 [pid 5056] close(3 [pid 5284] <... write resumed>) = 4 [pid 5283] <... symlink resumed>) = 0 [pid 5058] rmdir("./34" [pid 5056] <... close resumed>) = 0 [pid 5284] close(3 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5284] <... close resumed>) = 0 [pid 5283] memfd_create("syzkaller", 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5058] mkdir("./35", 0777 [pid 5284] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5284] memfd_create("syzkaller", 0) = 3 ./strace-static-x86_64: Process 5285 attached [pid 5284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5283] <... memfd_create resumed>) = 3 [pid 5281] <... write resumed>) = 524288 [pid 5058] <... mkdir resumed>) = 0 [pid 5285] set_robust_list(0x555556c07660, 24 [pid 5284] <... mmap resumed>) = 0x7f138d200000 [pid 5283] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5285] <... set_robust_list resumed>) = 0 [pid 5283] <... mmap resumed>) = 0x7f138d200000 [pid 5282] munmap(0x7f138d200000, 138412032 [pid 5058] <... openat resumed>) = 3 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5285 [pid 5285] chdir("./35" [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5281] munmap(0x7f138d200000, 138412032 [pid 5285] <... chdir resumed>) = 0 [pid 5282] <... munmap resumed>) = 0 [pid 5281] <... munmap resumed>) = 0 [pid 5285] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5281] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5281] ioctl(4, LOOP_SET_FD, 3 [pid 5285] <... prctl resumed>) = 0 [pid 5284] 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"..., 524288 [pid 5285] setpgid(0, 0 [pid 5284] <... write resumed>) = 524288 [pid 5283] 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"..., 524288 [pid 5282] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5285] <... setpgid resumed>) = 0 [pid 5282] <... openat resumed>) = 4 [pid 5285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5282] ioctl(4, LOOP_SET_FD, 3 [pid 5281] <... ioctl resumed>) = 0 [pid 5281] close(3 [pid 5284] munmap(0x7f138d200000, 138412032 [pid 5281] <... close resumed>) = 0 [pid 5284] <... munmap resumed>) = 0 [pid 5281] close(4) = 0 [pid 5281] mkdir("./bus", 0777 [pid 5284] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5281] <... mkdir resumed>) = 0 [pid 5284] <... openat resumed>) = 4 [pid 5281] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5284] ioctl(4, LOOP_SET_FD, 3 [pid 5285] <... openat resumed>) = 3 [pid 5283] <... write resumed>) = 524288 [pid 5285] write(3, "1000", 4) = 4 [pid 5285] close(3) = 0 [pid 5285] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5283] munmap(0x7f138d200000, 138412032 [pid 5282] <... ioctl resumed>) = 0 [pid 5285] memfd_create("syzkaller", 0 [pid 5283] <... munmap resumed>) = 0 [pid 5285] <... memfd_create resumed>) = 3 [pid 5283] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5282] close(3 [pid 5285] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5284] <... ioctl resumed>) = 0 [pid 5283] <... openat resumed>) = 4 [pid 5058] <... ioctl resumed>) = 0 [pid 5285] <... mmap resumed>) = 0x7f138d200000 [pid 5282] <... close resumed>) = 0 [pid 5285] 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"..., 524288 [pid 5284] close(3 [pid 5283] ioctl(4, LOOP_SET_FD, 3 [pid 5284] <... close resumed>) = 0 [ 75.149550][ T5281] loop3: detected capacity change from 0 to 1024 [ 75.168342][ T5282] loop4: detected capacity change from 0 to 1024 [ 75.186878][ T5284] loop5: detected capacity change from 0 to 1024 [pid 5284] close(4 [pid 5283] <... ioctl resumed>) = 0 [pid 5282] close(4 [pid 5058] close(3 [pid 5284] <... close resumed>) = 0 [pid 5284] mkdir("./bus", 0777) = 0 [pid 5285] <... write resumed>) = 524288 [pid 5282] <... close resumed>) = 0 [pid 5282] mkdir("./bus", 0777) = 0 [pid 5058] <... close resumed>) = 0 [pid 5282] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5284] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5285] munmap(0x7f138d200000, 138412032./strace-static-x86_64: Process 5286 attached ) = 0 [pid 5284] <... mount resumed>) = 0 [pid 5283] close(3 [pid 5282] <... mount resumed>) = 0 [pid 5281] <... mount resumed>) = 0 [pid 5286] set_robust_list(0x555556c07660, 24 [pid 5284] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5286 [pid 5286] <... set_robust_list resumed>) = 0 [pid 5281] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5286] chdir("./35" [pid 5281] <... openat resumed>) = 3 [pid 5281] chdir("./bus" [pid 5286] <... chdir resumed>) = 0 [ 75.208029][ T5283] loop1: detected capacity change from 0 to 1024 [pid 5286] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5281] <... chdir resumed>) = 0 [pid 5286] <... prctl resumed>) = 0 [pid 5285] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5284] <... openat resumed>) = 3 [pid 5283] <... close resumed>) = 0 [pid 5282] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5281] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5286] setpgid(0, 0 [pid 5284] chdir("./bus" [pid 5286] <... setpgid resumed>) = 0 [pid 5285] <... openat resumed>) = 4 [pid 5284] <... chdir resumed>) = 0 [pid 5283] close(4 [pid 5281] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5285] ioctl(4, LOOP_SET_FD, 3 [pid 5284] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5283] <... close resumed>) = 0 [pid 5281] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5284] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5283] mkdir("./bus", 0777 [pid 5281] <... symlink resumed>) = 0 [pid 5286] <... openat resumed>) = 3 [pid 5283] <... mkdir resumed>) = 0 [pid 5282] <... openat resumed>) = 3 [pid 5286] write(3, "1000", 4) = 4 [pid 5284] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5286] close(3 [pid 5283] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5282] chdir("./bus" [pid 5281] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5282] <... chdir resumed>) = 0 [pid 5286] <... close resumed>) = 0 [pid 5286] symlink("/dev/binderfs", "./binderfs" [pid 5284] <... symlink resumed>) = 0 [pid 5282] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5284] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5282] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5283] <... mount resumed>) = 0 [pid 5282] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5283] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5282] <... symlink resumed>) = 0 [pid 5286] <... symlink resumed>) = 0 [pid 5283] <... openat resumed>) = 3 [pid 5282] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5286] memfd_create("syzkaller", 0 [pid 5284] <... creat resumed>) = 4 [pid 5283] chdir("./bus" [pid 5281] <... creat resumed>) = 4 [pid 5286] <... memfd_create resumed>) = 3 [pid 5284] rename("./bus", "./file2" [pid 5283] <... chdir resumed>) = 0 [pid 5281] rename("./bus", "./file2" [pid 5286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5285] <... ioctl resumed>) = 0 [pid 5284] <... rename resumed>) = -1 EEXIST (File exists) [pid 5283] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5286] <... mmap resumed>) = 0x7f138d200000 [pid 5285] close(3 [pid 5284] memfd_create("syzkaller", 0 [pid 5283] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5281] <... rename resumed>) = -1 EEXIST (File exists) [pid 5285] <... close resumed>) = 0 [pid 5284] <... memfd_create resumed>) = 5 [pid 5283] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5282] <... creat resumed>) = 4 [pid 5285] close(4 [pid 5283] <... symlink resumed>) = 0 [pid 5285] <... close resumed>) = 0 [pid 5283] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5282] rename("./bus", "./file2" [pid 5285] mkdir("./bus", 0777 [pid 5284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5281] memfd_create("syzkaller", 0 [pid 5286] 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"..., 524288 [pid 5285] <... mkdir resumed>) = 0 [pid 5283] <... creat resumed>) = 4 [pid 5282] <... rename resumed>) = -1 EEXIST (File exists) [pid 5284] <... mmap resumed>) = 0x7f138d200000 [pid 5281] <... memfd_create resumed>) = 5 [pid 5281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5283] rename("./bus", "./file2" [pid 5282] memfd_create("syzkaller", 0 [pid 5285] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5281] <... mmap resumed>) = 0x7f138d200000 [pid 5283] <... rename resumed>) = -1 EEXIST (File exists) [pid 5282] <... memfd_create resumed>) = 5 [pid 5282] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5283] memfd_create("syzkaller", 0 [pid 5282] <... mmap resumed>) = 0x7f138d200000 [pid 5283] <... memfd_create resumed>) = 5 [ 75.272994][ T5285] loop0: detected capacity change from 0 to 1024 [pid 5282] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5283] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5283] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5281] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5284] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5285] <... mount resumed>) = 0 [pid 5285] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5285] chdir("./bus") = 0 [pid 5282] <... write resumed>) = 524288 [pid 5286] <... write resumed>) = 524288 [pid 5285] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5283] <... write resumed>) = 524288 [pid 5285] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5285] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5286] munmap(0x7f138d200000, 138412032) = 0 [pid 5286] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5284] <... write resumed>) = 524288 [pid 5285] <... creat resumed>) = 4 [pid 5281] <... write resumed>) = 524288 [pid 5286] <... openat resumed>) = 4 [pid 5285] rename("./bus", "./file2" [pid 5284] munmap(0x7f138d200000, 138412032 [pid 5283] munmap(0x7f138d200000, 138412032 [pid 5282] munmap(0x7f138d200000, 138412032 [pid 5281] munmap(0x7f138d200000, 138412032 [pid 5285] <... rename resumed>) = -1 EEXIST (File exists) [pid 5284] <... munmap resumed>) = 0 [pid 5281] <... munmap resumed>) = 0 [pid 5286] ioctl(4, LOOP_SET_FD, 3 [pid 5284] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5283] <... munmap resumed>) = 0 [pid 5281] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5285] memfd_create("syzkaller", 0 [pid 5283] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5285] <... memfd_create resumed>) = 5 [pid 5283] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5285] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5283] close(5 [pid 5285] <... mmap resumed>) = 0x7f138d200000 [pid 5284] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5283] <... close resumed>) = 0 [pid 5282] <... munmap resumed>) = 0 [pid 5281] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5284] close(5 [pid 5282] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5281] close(5 [pid 5285] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5284] <... close resumed>) = 0 [pid 5283] creat("./file1", 000 [pid 5286] <... ioctl resumed>) = 0 [pid 5285] <... write resumed>) = 524288 [pid 5284] creat("./file1", 000 [pid 5282] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5281] <... close resumed>) = 0 [pid 5286] close(3 [pid 5285] munmap(0x7f138d200000, 138412032 [pid 5282] close(5 [pid 5286] <... close resumed>) = 0 [pid 5285] <... munmap resumed>) = 0 [pid 5283] <... creat resumed>) = 5 [pid 5281] creat("./file1", 000 [pid 5285] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5283] exit_group(0 [pid 5286] close(4 [pid 5285] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5283] <... exit_group resumed>) = ? [pid 5286] <... close resumed>) = 0 [pid 5285] close(5 [pid 5284] <... creat resumed>) = 5 [pid 5283] +++ exited with 0 +++ [pid 5282] <... close resumed>) = 0 [pid 5286] mkdir("./bus", 0777 [pid 5285] <... close resumed>) = 0 [pid 5281] <... creat resumed>) = 5 [pid 5286] <... mkdir resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5283, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5281] exit_group(0 [pid 5057] umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5284] exit_group(0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 75.370049][ T5286] loop2: detected capacity change from 0 to 1024 [pid 5285] creat("./file1", 000 [pid 5286] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5284] <... exit_group resumed>) = ? [pid 5282] creat("./file1", 000 [pid 5281] <... exit_group resumed>) = ? [pid 5057] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5285] <... creat resumed>) = 5 [pid 5284] +++ exited with 0 +++ [pid 5282] <... creat resumed>) = 5 [pid 5281] +++ exited with 0 +++ [pid 5057] <... openat resumed>) = 3 [pid 5285] exit_group(0 [pid 5057] newfstatat(3, "", [pid 5285] <... exit_group resumed>) = ? [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5284, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5282] exit_group(0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5281, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5282] <... exit_group resumed>) = ? [pid 5059] umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5286] <... mount resumed>) = 0 [pid 5285] +++ exited with 0 +++ [pid 5061] umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5286] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5286] <... openat resumed>) = 3 [pid 5061] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5285, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5286] chdir("./bus" [pid 5061] <... openat resumed>) = 3 [pid 5056] umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5286] <... chdir resumed>) = 0 [pid 5061] newfstatat(3, "", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5286] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5286] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] getdents64(3, [pid 5056] <... openat resumed>) = 3 [pid 5286] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] newfstatat(3, "", [pid 5061] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, [pid 5282] +++ exited with 0 +++ [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] getdents64(3, [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5282, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5286] <... symlink resumed>) = 0 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5286] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5059] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5286] <... creat resumed>) = 4 [pid 5286] rename("./bus", "./file2" [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5286] <... rename resumed>) = -1 EEXIST (File exists) [pid 5056] <... umount2 resumed>) = 0 [pid 5286] memfd_create("syzkaller", 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5286] <... memfd_create resumed>) = 5 [pid 5056] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5286] <... mmap resumed>) = 0x7f138d200000 [pid 5061] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(AT_FDCWD, "./35/bus", [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./34/bus", [pid 5061] newfstatat(AT_FDCWD, "./37/bus", [pid 5059] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./36/bus", [pid 5059] newfstatat(AT_FDCWD, "./36/bus", [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5286] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... openat resumed>) = 4 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] newfstatat(4, "", [pid 5060] umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5286] <... write resumed>) = 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... openat resumed>) = 4 [pid 5057] <... openat resumed>) = 4 [pid 5056] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] getdents64(4, [pid 5060] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] newfstatat(4, "", [pid 5057] newfstatat(4, "", [pid 5286] munmap(0x7f138d200000, 138412032) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... openat resumed>) = 4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5286] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5286] close(5) = 0 [pid 5061] getdents64(4, [pid 5060] newfstatat(4, "", [pid 5059] getdents64(4, [pid 5057] getdents64(4, [pid 5056] newfstatat(4, "", [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5286] creat("./file1", 000 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] close(4 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... close resumed>) = 0 [pid 5060] getdents64(4, [pid 5057] getdents64(4, [pid 5056] getdents64(4, [pid 5059] getdents64(4, [pid 5286] <... creat resumed>) = 5 [pid 5061] rmdir("./37/bus" [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5286] exit_group(0 [pid 5060] getdents64(4, [pid 5286] <... exit_group resumed>) = ? [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4 [pid 5057] close(4 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... close resumed>) = 0 [pid 5060] rmdir("./34/bus" [pid 5059] close(4 [pid 5057] <... close resumed>) = 0 [pid 5056] getdents64(4, [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5057] rmdir("./36/bus" [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5286] +++ exited with 0 +++ [pid 5061] umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] close(4 [pid 5057] <... rmdir resumed>) = 0 [pid 5059] rmdir("./36/bus" [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5286, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=1 /* 0.01 s */} --- [pid 5056] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] rmdir("./35/bus" [pid 5061] newfstatat(AT_FDCWD, "./37/binderfs", [pid 5060] newfstatat(AT_FDCWD, "./34/binderfs", [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./37/binderfs" [pid 5060] unlink("./34/binderfs" [pid 5056] <... rmdir resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5061] getdents64(3, [pid 5060] getdents64(3, [pid 5059] umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] close(3 [pid 5060] close(3 [pid 5059] newfstatat(AT_FDCWD, "./36/binderfs", [pid 5057] newfstatat(AT_FDCWD, "./36/binderfs", [pid 5056] newfstatat(AT_FDCWD, "./35/binderfs", [pid 5061] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] rmdir("./37" [pid 5060] rmdir("./34" [pid 5059] unlink("./36/binderfs" [pid 5057] unlink("./36/binderfs" [pid 5056] unlink("./35/binderfs" [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5058] umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... unlink resumed>) = 0 [pid 5061] mkdir("./38", 0777 [pid 5060] mkdir("./35", 0777 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5059] getdents64(3, [pid 5057] getdents64(3, [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3 [pid 5057] close(3 [pid 5061] <... mkdir resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5059] rmdir("./36" [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... mkdir resumed>) = 0 [pid 5058] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(3, [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] rmdir("./36" [pid 5058] newfstatat(AT_FDCWD, "./35/bus", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] close(3 [pid 5058] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] mkdir("./37", 0777 [pid 5056] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5056] rmdir("./35" [pid 5058] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5057] mkdir("./37", 0777 [pid 5060] <... openat resumed>) = 3 [pid 5058] newfstatat(4, "", [pid 5056] <... rmdir resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] getdents64(4, [pid 5059] <... openat resumed>) = 3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] mkdir("./36", 0777 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./35/bus") = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... mkdir resumed>) = 0 [pid 5058] umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 3 [pid 5058] newfstatat(AT_FDCWD, "./35/binderfs", [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./35/binderfs") = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5058] rmdir("./35") = 0 [pid 5058] mkdir("./36", 0777) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5061] <... ioctl resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5061] close(3 [pid 5060] close(3 [pid 5061] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5059] close(3 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5288 attached ./strace-static-x86_64: Process 5287 attached [pid 5059] <... close resumed>) = 0 [pid 5287] set_robust_list(0x555556c07660, 24 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5288 [pid 5288] set_robust_list(0x555556c07660, 24 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5288] <... set_robust_list resumed>) = 0 [pid 5287] <... set_robust_list resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5287 [pid 5288] chdir("./38" [pid 5287] chdir("./35" [pid 5056] <... ioctl resumed>) = 0 [pid 5056] close(3 [pid 5288] <... chdir resumed>) = 0 [pid 5287] <... chdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5287] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5289 attached ) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5289] set_robust_list(0x555556c07660, 24 [pid 5288] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5287] setpgid(0, 0) = 0 [pid 5289] <... set_robust_list resumed>) = 0 [pid 5288] <... prctl resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5289 [pid 5287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5289] chdir("./37" [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5290 [pid 5288] setpgid(0, 0 [pid 5289] <... chdir resumed>) = 0 [pid 5288] <... setpgid resumed>) = 0 [pid 5289] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5287] <... openat resumed>) = 3 [pid 5058] <... ioctl resumed>) = 0 [pid 5289] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5290 attached [pid 5290] set_robust_list(0x555556c07660, 24) = 0 [pid 5290] chdir("./36" [pid 5288] <... openat resumed>) = 3 [pid 5287] write(3, "1000", 4 [pid 5289] setpgid(0, 0) = 0 [pid 5287] <... write resumed>) = 4 [pid 5290] <... chdir resumed>) = 0 [pid 5289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5288] write(3, "1000", 4 [pid 5287] close(3 [pid 5058] close(3 [pid 5288] <... write resumed>) = 4 [pid 5287] <... close resumed>) = 0 [pid 5288] close(3 [pid 5287] symlink("/dev/binderfs", "./binderfs" [pid 5058] <... close resumed>) = 0 [pid 5288] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5288] symlink("/dev/binderfs", "./binderfs" [pid 5290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 5291 attached [pid 5290] setpgid(0, 0 [pid 5289] <... openat resumed>) = 3 [pid 5288] <... symlink resumed>) = 0 [pid 5287] <... symlink resumed>) = 0 [pid 5290] <... setpgid resumed>) = 0 [pid 5290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5290] write(3, "1000", 4 [pid 5057] <... ioctl resumed>) = 0 [pid 5289] write(3, "1000", 4 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5291 [pid 5290] <... write resumed>) = 4 [pid 5057] close(3 [pid 5287] memfd_create("syzkaller", 0 [pid 5291] set_robust_list(0x555556c07660, 24 [pid 5290] close(3 [pid 5289] <... write resumed>) = 4 [pid 5057] <... close resumed>) = 0 [pid 5288] memfd_create("syzkaller", 0 [pid 5289] close(3 [pid 5290] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5291] <... set_robust_list resumed>) = 0 [pid 5290] symlink("/dev/binderfs", "./binderfs" [pid 5289] <... close resumed>) = 0 [pid 5288] <... memfd_create resumed>) = 3 [pid 5287] <... memfd_create resumed>) = 3 [pid 5289] symlink("/dev/binderfs", "./binderfs" [pid 5288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5291] chdir("./36" [pid 5290] <... symlink resumed>) = 0 [pid 5289] <... symlink resumed>) = 0 [pid 5288] <... mmap resumed>) = 0x7f138d200000 [pid 5287] <... mmap resumed>) = 0x7f138d200000 [pid 5290] memfd_create("syzkaller", 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5292 [pid 5290] <... memfd_create resumed>) = 3 [pid 5290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5287] 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"..., 524288./strace-static-x86_64: Process 5292 attached [pid 5291] <... chdir resumed>) = 0 [pid 5290] 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"..., 524288 [pid 5289] memfd_create("syzkaller", 0 [pid 5288] 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"..., 524288 [pid 5292] set_robust_list(0x555556c07660, 24 [pid 5291] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5289] <... memfd_create resumed>) = 3 [pid 5291] <... prctl resumed>) = 0 [pid 5289] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5291] setpgid(0, 0 [pid 5292] <... set_robust_list resumed>) = 0 [pid 5291] <... setpgid resumed>) = 0 [pid 5290] <... write resumed>) = 524288 [pid 5289] <... mmap resumed>) = 0x7f138d200000 [pid 5288] <... write resumed>) = 524288 [pid 5287] <... write resumed>) = 524288 [pid 5292] chdir("./37" [pid 5291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5292] <... chdir resumed>) = 0 [pid 5292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5291] <... openat resumed>) = 3 [pid 5289] 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"..., 524288 [pid 5287] munmap(0x7f138d200000, 138412032 [pid 5292] setpgid(0, 0) = 0 [pid 5292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5291] write(3, "1000", 4 [pid 5289] <... write resumed>) = 524288 [pid 5287] <... munmap resumed>) = 0 [pid 5291] <... write resumed>) = 4 [pid 5289] munmap(0x7f138d200000, 138412032 [pid 5287] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5291] close(3 [pid 5287] <... openat resumed>) = 4 [pid 5292] <... openat resumed>) = 3 [pid 5291] <... close resumed>) = 0 [pid 5292] write(3, "1000", 4 [pid 5291] symlink("/dev/binderfs", "./binderfs" [pid 5290] munmap(0x7f138d200000, 138412032 [pid 5289] <... munmap resumed>) = 0 [pid 5287] ioctl(4, LOOP_SET_FD, 3 [pid 5292] <... write resumed>) = 4 [pid 5291] <... symlink resumed>) = 0 [pid 5290] <... munmap resumed>) = 0 [pid 5290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5290] ioctl(4, LOOP_SET_FD, 3 [pid 5292] close(3 [pid 5291] memfd_create("syzkaller", 0 [pid 5289] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5288] munmap(0x7f138d200000, 138412032 [pid 5287] <... ioctl resumed>) = 0 [pid 5292] <... close resumed>) = 0 [pid 5291] <... memfd_create resumed>) = 3 [pid 5290] <... ioctl resumed>) = 0 [pid 5289] <... openat resumed>) = 4 [pid 5288] <... munmap resumed>) = 0 [pid 5287] close(3 [pid 5292] symlink("/dev/binderfs", "./binderfs" [pid 5291] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5289] ioctl(4, LOOP_SET_FD, 3 [pid 5288] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5287] <... close resumed>) = 0 [pid 5291] <... mmap resumed>) = 0x7f138d200000 [pid 5287] close(4 [pid 5292] <... symlink resumed>) = 0 [pid 5291] 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"..., 524288 [pid 5288] <... openat resumed>) = 4 [pid 5287] <... close resumed>) = 0 [pid 5290] close(3 [pid 5292] memfd_create("syzkaller", 0 [pid 5290] <... close resumed>) = 0 [pid 5287] mkdir("./bus", 0777 [pid 5288] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5292] <... memfd_create resumed>) = 3 [pid 5291] <... write resumed>) = 524288 [pid 5290] close(4 [pid 5289] <... ioctl resumed>) = 0 [pid 5288] close(3 [pid 5287] <... mkdir resumed>) = 0 [pid 5290] <... close resumed>) = 0 [pid 5292] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5290] mkdir("./bus", 0777 [pid 5289] close(3 [pid 5292] <... mmap resumed>) = 0x7f138d200000 [pid 5291] munmap(0x7f138d200000, 138412032 [pid 5290] <... mkdir resumed>) = 0 [pid 5289] <... close resumed>) = 0 [pid 5288] <... close resumed>) = 0 [pid 5287] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5292] 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"..., 524288 [pid 5289] close(4 [pid 5288] close(4) = 0 [pid 5292] <... write resumed>) = 524288 [pid 5291] <... munmap resumed>) = 0 [ 75.735229][ T5287] loop4: detected capacity change from 0 to 1024 [ 75.736519][ T5290] loop0: detected capacity change from 0 to 1024 [ 75.752626][ T5289] loop3: detected capacity change from 0 to 1024 [ 75.767358][ T5288] loop5: detected capacity change from 0 to 1024 [pid 5290] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5289] <... close resumed>) = 0 [pid 5288] mkdir("./bus", 0777 [pid 5292] munmap(0x7f138d200000, 138412032 [pid 5291] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5291] ioctl(4, LOOP_SET_FD, 3 [pid 5292] <... munmap resumed>) = 0 [pid 5291] <... ioctl resumed>) = 0 [pid 5289] mkdir("./bus", 0777 [pid 5288] <... mkdir resumed>) = 0 [pid 5287] <... mount resumed>) = 0 [pid 5292] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5291] close(3 [pid 5289] <... mkdir resumed>) = 0 [pid 5288] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5287] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5292] <... openat resumed>) = 4 [pid 5291] <... close resumed>) = 0 [pid 5289] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5292] ioctl(4, LOOP_SET_FD, 3 [pid 5291] close(4) = 0 [pid 5287] <... openat resumed>) = 3 [pid 5291] mkdir("./bus", 0777) = 0 [pid 5291] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5287] chdir("./bus" [pid 5291] <... mount resumed>) = 0 [pid 5290] <... mount resumed>) = 0 [pid 5291] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5291] chdir("./bus") = 0 [pid 5291] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5291] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5291] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5290] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5287] <... chdir resumed>) = 0 [pid 5290] <... openat resumed>) = 3 [pid 5287] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5290] chdir("./bus" [pid 5289] <... mount resumed>) = 0 [pid 5287] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5291] <... creat resumed>) = 4 [pid 5290] <... chdir resumed>) = 0 [pid 5289] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5291] rename("./bus", "./file2" [pid 5290] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5289] <... openat resumed>) = 3 [pid 5287] <... symlink resumed>) = 0 [pid 5290] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5289] chdir("./bus" [pid 5287] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5291] <... rename resumed>) = -1 EEXIST (File exists) [pid 5289] <... chdir resumed>) = 0 [pid 5291] memfd_create("syzkaller", 0 [pid 5290] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5289] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5288] <... mount resumed>) = 0 [pid 5291] <... memfd_create resumed>) = 5 [pid 5290] <... symlink resumed>) = 0 [pid 5289] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5288] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5291] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5292] <... ioctl resumed>) = 0 [pid 5291] <... mmap resumed>) = 0x7f138d200000 [pid 5290] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5289] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5288] <... openat resumed>) = 3 [pid 5287] <... creat resumed>) = 4 [pid 5292] close(3 [pid 5288] chdir("./bus" [pid 5287] rename("./bus", "./file2" [pid 5289] <... symlink resumed>) = 0 [pid 5292] <... close resumed>) = 0 [pid 5289] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5288] <... chdir resumed>) = 0 [pid 5292] close(4 [pid 5288] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5287] <... rename resumed>) = -1 EEXIST (File exists) [pid 5292] <... close resumed>) = 0 [pid 5287] memfd_create("syzkaller", 0 [pid 5292] mkdir("./bus", 0777) = 0 [pid 5291] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5288] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5287] <... memfd_create resumed>) = 5 [pid 5292] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5290] <... creat resumed>) = 4 [pid 5288] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5287] <... mmap resumed>) = 0x7f138d200000 [pid 5291] <... write resumed>) = 524288 [pid 5289] <... creat resumed>) = 4 [pid 5289] rename("./bus", "./file2" [pid 5290] rename("./bus", "./file2" [ 75.808703][ T5291] loop2: detected capacity change from 0 to 1024 [ 75.829698][ T5292] loop1: detected capacity change from 0 to 1024 [pid 5287] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5290] <... rename resumed>) = -1 EEXIST (File exists) [pid 5288] <... symlink resumed>) = 0 [pid 5290] memfd_create("syzkaller", 0 [pid 5288] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5290] <... memfd_create resumed>) = 5 [pid 5290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5289] <... rename resumed>) = -1 EEXIST (File exists) [pid 5287] <... write resumed>) = 524288 [pid 5290] <... mmap resumed>) = 0x7f138d200000 [pid 5292] <... mount resumed>) = 0 [pid 5291] munmap(0x7f138d200000, 138412032 [pid 5290] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5289] memfd_create("syzkaller", 0 [pid 5288] <... creat resumed>) = 4 [pid 5292] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5288] rename("./bus", "./file2" [pid 5292] <... openat resumed>) = 3 [pid 5291] <... munmap resumed>) = 0 [pid 5289] <... memfd_create resumed>) = 5 [pid 5288] <... rename resumed>) = -1 EEXIST (File exists) [pid 5287] munmap(0x7f138d200000, 138412032 [pid 5292] chdir("./bus") = 0 [pid 5291] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5290] <... write resumed>) = 524288 [pid 5289] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5288] memfd_create("syzkaller", 0 [pid 5287] <... munmap resumed>) = 0 [pid 5292] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5291] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5290] munmap(0x7f138d200000, 138412032 [pid 5289] <... mmap resumed>) = 0x7f138d200000 [pid 5288] <... memfd_create resumed>) = 5 [pid 5287] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5292] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5291] close(5 [pid 5290] <... munmap resumed>) = 0 [pid 5289] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5287] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5292] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5291] <... close resumed>) = 0 [pid 5290] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5289] <... write resumed>) = 524288 [pid 5288] <... mmap resumed>) = 0x7f138d200000 [pid 5287] close(5 [pid 5291] creat("./file1", 000 [pid 5290] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5287] <... close resumed>) = 0 [pid 5292] <... symlink resumed>) = 0 [pid 5290] close(5 [pid 5292] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5291] <... creat resumed>) = 5 [pid 5291] exit_group(0 [pid 5289] munmap(0x7f138d200000, 138412032 [pid 5291] <... exit_group resumed>) = ? [pid 5290] <... close resumed>) = 0 [pid 5289] <... munmap resumed>) = 0 [pid 5291] +++ exited with 0 +++ [pid 5288] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5289] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5292] <... creat resumed>) = 4 [pid 5289] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5287] creat("./file1", 000 [pid 5292] rename("./bus", "./file2" [pid 5289] close(5 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5291, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5289] <... close resumed>) = 0 [pid 5058] umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5292] <... rename resumed>) = -1 EEXIST (File exists) [pid 5290] creat("./file1", 000 [pid 5289] creat("./file1", 000 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5292] memfd_create("syzkaller", 0 [pid 5290] <... creat resumed>) = 5 [pid 5288] <... write resumed>) = 524288 [pid 5287] <... creat resumed>) = 5 [pid 5058] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5292] <... memfd_create resumed>) = 5 [pid 5290] exit_group(0 [pid 5288] munmap(0x7f138d200000, 138412032 [pid 5287] exit_group(0 [pid 5058] <... openat resumed>) = 3 [pid 5292] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5290] <... exit_group resumed>) = ? [pid 5288] <... munmap resumed>) = 0 [pid 5287] <... exit_group resumed>) = ? [pid 5058] newfstatat(3, "", [pid 5292] <... mmap resumed>) = 0x7f138d200000 [pid 5290] +++ exited with 0 +++ [pid 5289] <... creat resumed>) = 5 [pid 5288] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5287] +++ exited with 0 +++ [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5292] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5289] exit_group(0 [pid 5288] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] getdents64(3, [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5287, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5289] <... exit_group resumed>) = ? [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5290, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5056] umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5288] close(5 [pid 5056] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5289] +++ exited with 0 +++ [pid 5288] <... close resumed>) = 0 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5058] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... openat resumed>) = 3 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5289, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5056] newfstatat(3, "", [pid 5059] umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] getdents64(3, [pid 5060] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] newfstatat(3, "", [pid 5056] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(3, "", [pid 5292] <... write resumed>) = 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5292] munmap(0x7f138d200000, 138412032 [pid 5288] creat("./file1", 000 [pid 5060] getdents64(3, [pid 5059] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5292] <... munmap resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5292] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5288] <... creat resumed>) = 5 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5292] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5288] exit_group(0 [pid 5059] newfstatat(AT_FDCWD, "./37/bus", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5292] close(5 [pid 5288] <... exit_group resumed>) = ? [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] newfstatat(AT_FDCWD, "./36/bus", [pid 5056] newfstatat(AT_FDCWD, "./36/bus", [pid 5292] <... close resumed>) = 0 [pid 5288] +++ exited with 0 +++ [pid 5059] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5288, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] newfstatat(AT_FDCWD, "./35/bus", [pid 5059] <... openat resumed>) = 4 [pid 5058] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... restart_syscall resumed>) = 0 [pid 5059] newfstatat(4, "", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(4, [pid 5058] <... openat resumed>) = 4 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] newfstatat(4, "", [pid 5056] <... openat resumed>) = 4 [pid 5292] creat("./file1", 000 [pid 5061] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] getdents64(4, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(4, "", [pid 5061] <... openat resumed>) = 3 [pid 5060] <... openat resumed>) = 4 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] newfstatat(3, "", [pid 5060] newfstatat(4, "", [pid 5059] close(4 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5292] <... creat resumed>) = 5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] getdents64(4, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] getdents64(3, [pid 5060] getdents64(4, [pid 5059] rmdir("./37/bus" [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5292] exit_group(0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5060] getdents64(4, [pid 5058] close(4 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5292] <... exit_group resumed>) = ? [pid 5060] close(4 [pid 5058] <... close resumed>) = 0 [pid 5056] close(4 [pid 5061] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... close resumed>) = 0 [pid 5058] rmdir("./36/bus" [pid 5060] rmdir("./35/bus" [pid 5056] <... close resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] rmdir("./36/bus" [pid 5059] <... rmdir resumed>) = 0 [pid 5060] umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] unlink("./35/binderfs" [pid 5056] newfstatat(AT_FDCWD, "./36/binderfs", [pid 5292] +++ exited with 0 +++ [pid 5060] <... unlink resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] newfstatat(AT_FDCWD, "./37/binderfs", [pid 5058] newfstatat(AT_FDCWD, "./36/binderfs", [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5292, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5060] getdents64(3, [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5056] unlink("./36/binderfs" [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5060] close(3 [pid 5059] unlink("./37/binderfs" [pid 5058] unlink("./36/binderfs" [pid 5060] <... close resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5060] rmdir("./35" [pid 5058] <... unlink resumed>) = 0 [pid 5057] umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5056] getdents64(3, [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(3, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5059] close(3 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... close resumed>) = 0 [pid 5058] close(3 [pid 5057] <... openat resumed>) = 3 [pid 5060] mkdir("./36", 0777 [pid 5059] rmdir("./37" [pid 5058] <... close resumed>) = 0 [pid 5057] newfstatat(3, "", [pid 5056] close(3 [pid 5061] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... mkdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] rmdir("./36" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... close resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] getdents64(3, [pid 5056] rmdir("./36" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 3 [pid 5059] mkdir("./38", 0777 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] newfstatat(AT_FDCWD, "./38/bus", [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] <... mkdir resumed>) = 0 [pid 5058] mkdir("./37", 0777 [pid 5057] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5056] mkdir("./37", 0777 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... mkdir resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5061] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5061] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... openat resumed>) = 4 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] newfstatat(4, "", [pid 5058] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5061] getdents64(4, [pid 5057] <... umount2 resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./38/bus" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./37/bus", [pid 5061] <... rmdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... ioctl resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./38/binderfs", [pid 5060] close(3 [pid 5059] close(3 [pid 5057] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] close(3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... close resumed>) = 0 [pid 5061] unlink("./38/binderfs" [pid 5060] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] close(3 [pid 5057] <... openat resumed>) = 4 [pid 5056] <... close resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5293 [pid 5057] getdents64(4, [pid 5058] <... close resumed>) = 0 ./strace-static-x86_64: Process 5293 attached [pid 5293] set_robust_list(0x555556c07660, 24) = 0 [pid 5293] chdir("./38"./strace-static-x86_64: Process 5294 attached [pid 5061] getdents64(3, [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5294] set_robust_list(0x555556c07660, 24) = 0 [pid 5294] chdir("./37" [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5295 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5294 ./strace-static-x86_64: Process 5295 attached [pid 5294] <... chdir resumed>) = 0 [pid 5294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5294] setpgid(0, 0 [pid 5293] <... chdir resumed>) = 0 [pid 5294] <... setpgid resumed>) = 0 [pid 5293] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5293] <... prctl resumed>) = 0 [pid 5295] set_robust_list(0x555556c07660, 24 [pid 5294] <... openat resumed>) = 3 [pid 5293] setpgid(0, 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5293] <... setpgid resumed>) = 0 [pid 5293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] close(3 [pid 5057] getdents64(4, [pid 5293] <... openat resumed>) = 3 [pid 5293] write(3, "1000", 4) = 4 [pid 5294] write(3, "1000", 4 [pid 5293] close(3 [pid 5295] <... set_robust_list resumed>) = 0 [pid 5294] <... write resumed>) = 4 [pid 5293] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5294] close(3 [pid 5293] symlink("/dev/binderfs", "./binderfs" [pid 5294] <... close resumed>) = 0 [pid 5294] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5293] <... symlink resumed>) = 0 [pid 5294] memfd_create("syzkaller", 0 [pid 5293] memfd_create("syzkaller", 0 [pid 5294] <... memfd_create resumed>) = 3 [pid 5293] <... memfd_create resumed>) = 3 [pid 5294] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5293] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5294] <... mmap resumed>) = 0x7f138d200000 [pid 5293] <... mmap resumed>) = 0x7f138d200000 [pid 5061] rmdir("./38" [pid 5295] chdir("./36" [pid 5057] close(4./strace-static-x86_64: Process 5296 attached [pid 5295] <... chdir resumed>) = 0 [pid 5293] 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"..., 524288 [pid 5061] <... rmdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5296] set_robust_list(0x555556c07660, 24 [pid 5295] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] rmdir("./37/bus" [pid 5295] <... prctl resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5296 [pid 5057] <... rmdir resumed>) = 0 [pid 5295] setpgid(0, 0 [pid 5057] umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5295] <... setpgid resumed>) = 0 [pid 5061] mkdir("./39", 0777 [pid 5296] <... set_robust_list resumed>) = 0 [pid 5295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5294] 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"..., 524288 [pid 5061] <... mkdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5295] <... openat resumed>) = 3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] newfstatat(AT_FDCWD, "./37/binderfs", [pid 5061] <... openat resumed>) = 3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5057] unlink("./37/binderfs" [pid 5295] write(3, "1000", 4 [pid 5057] <... unlink resumed>) = 0 [pid 5295] <... write resumed>) = 4 [pid 5294] <... write resumed>) = 524288 [pid 5057] getdents64(3, [pid 5296] chdir("./37" [pid 5295] close(3) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5295] symlink("/dev/binderfs", "./binderfs" [pid 5057] close(3 [pid 5296] <... chdir resumed>) = 0 [pid 5295] <... symlink resumed>) = 0 [pid 5293] <... write resumed>) = 524288 [pid 5057] <... close resumed>) = 0 [pid 5296] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5295] memfd_create("syzkaller", 0 [pid 5057] rmdir("./37" [pid 5295] <... memfd_create resumed>) = 3 [pid 5295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5296] <... prctl resumed>) = 0 [pid 5295] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... rmdir resumed>) = 0 [pid 5296] setpgid(0, 0 [pid 5294] munmap(0x7f138d200000, 138412032 [pid 5296] <... setpgid resumed>) = 0 [pid 5057] mkdir("./38", 0777 [pid 5296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5295] 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"..., 524288 [pid 5294] <... munmap resumed>) = 0 [pid 5296] <... openat resumed>) = 3 [pid 5294] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5293] munmap(0x7f138d200000, 138412032 [pid 5296] write(3, "1000", 4 [pid 5294] <... openat resumed>) = 4 [pid 5296] <... write resumed>) = 4 [pid 5294] ioctl(4, LOOP_SET_FD, 3 [pid 5293] <... munmap resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5296] close(3 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5296] <... close resumed>) = 0 [pid 5296] symlink("/dev/binderfs", "./binderfs" [pid 5295] <... write resumed>) = 524288 [pid 5296] <... symlink resumed>) = 0 [pid 5293] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5295] munmap(0x7f138d200000, 138412032 [pid 5296] memfd_create("syzkaller", 0 [pid 5294] <... ioctl resumed>) = 0 [pid 5293] <... openat resumed>) = 4 [pid 5295] <... munmap resumed>) = 0 [pid 5296] <... memfd_create resumed>) = 3 [pid 5293] ioctl(4, LOOP_SET_FD, 3 [pid 5296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5295] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5294] close(3 [pid 5061] <... ioctl resumed>) = 0 [pid 5294] <... close resumed>) = 0 [pid 5294] close(4) = 0 [pid 5296] <... mmap resumed>) = 0x7f138d200000 [pid 5294] mkdir("./bus", 0777 [pid 5295] <... openat resumed>) = 4 [pid 5294] <... mkdir resumed>) = 0 [pid 5293] <... ioctl resumed>) = 0 [pid 5294] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] close(3) = 0 [pid 5296] 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"..., 524288 [ 76.240515][ T5294] loop0: detected capacity change from 0 to 1024 [ 76.267832][ T5293] loop3: detected capacity change from 0 to 1024 [pid 5295] ioctl(4, LOOP_SET_FD, 3 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556c07650) = 5297 ./strace-static-x86_64: Process 5297 attached [pid 5294] <... mount resumed>) = 0 [pid 5293] close(3 [pid 5297] set_robust_list(0x555556c07660, 24 [pid 5295] <... ioctl resumed>) = 0 [pid 5294] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5293] <... close resumed>) = 0 [pid 5297] <... set_robust_list resumed>) = 0 [pid 5295] close(3 [pid 5294] <... openat resumed>) = 3 [pid 5293] close(4) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5297] chdir("./39" [pid 5296] <... write resumed>) = 524288 [pid 5295] <... close resumed>) = 0 [pid 5294] chdir("./bus" [pid 5293] mkdir("./bus", 0777 [pid 5057] close(3) = 0 [pid 5296] munmap(0x7f138d200000, 138412032 [pid 5293] <... mkdir resumed>) = 0 [ 76.289428][ T5295] loop4: detected capacity change from 0 to 1024 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5297] <... chdir resumed>) = 0 [pid 5296] <... munmap resumed>) = 0 [pid 5295] close(4 [pid 5294] <... chdir resumed>) = 0 [pid 5293] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5296] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5295] <... close resumed>) = 0 ./strace-static-x86_64: Process 5298 attached [pid 5296] <... openat resumed>) = 4 [pid 5295] mkdir("./bus", 0777 [pid 5298] set_robust_list(0x555556c07660, 24 [pid 5297] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5296] ioctl(4, LOOP_SET_FD, 3 [pid 5295] <... mkdir resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5298 [pid 5298] <... set_robust_list resumed>) = 0 [pid 5297] <... prctl resumed>) = 0 [pid 5295] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5294] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5298] chdir("./38") = 0 [pid 5298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5298] setpgid(0, 0) = 0 [pid 5298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5294] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5298] write(3, "1000", 4) = 4 [pid 5298] close(3) = 0 [pid 5298] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5297] setpgid(0, 0 [pid 5298] memfd_create("syzkaller", 0) = 3 [pid 5296] <... ioctl resumed>) = 0 [pid 5298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5296] close(3 [pid 5298] <... mmap resumed>) = 0x7f138d200000 [pid 5297] <... setpgid resumed>) = 0 [pid 5296] <... close resumed>) = 0 [pid 5293] <... mount resumed>) = 0 [pid 5296] close(4 [pid 5293] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5296] <... close resumed>) = 0 [pid 5293] <... openat resumed>) = 3 [pid 5297] <... openat resumed>) = 3 [pid 5296] mkdir("./bus", 0777 [pid 5293] chdir("./bus" [pid 5298] 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"..., 524288 [pid 5297] write(3, "1000", 4 [pid 5296] <... mkdir resumed>) = 0 [pid 5295] <... mount resumed>) = 0 [pid 5294] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5293] <... chdir resumed>) = 0 [pid 5297] <... write resumed>) = 4 [pid 5295] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5295] chdir("./bus" [pid 5297] close(3 [pid 5296] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5295] <... chdir resumed>) = 0 [pid 5294] <... symlink resumed>) = 0 [pid 5293] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5297] <... close resumed>) = 0 [ 76.340793][ T5296] loop2: detected capacity change from 0 to 1024 [ 76.347343][ T1134] cfg80211: failed to load regulatory.db [pid 5294] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5297] symlink("/dev/binderfs", "./binderfs" [pid 5295] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5294] <... creat resumed>) = 4 [pid 5293] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5298] <... write resumed>) = 524288 [pid 5297] <... symlink resumed>) = 0 [pid 5296] <... mount resumed>) = 0 [pid 5294] rename("./bus", "./file2" [pid 5293] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5295] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5295] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5296] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5294] <... rename resumed>) = -1 EEXIST (File exists) [pid 5293] <... symlink resumed>) = 0 [pid 5297] memfd_create("syzkaller", 0 [pid 5294] memfd_create("syzkaller", 0 [pid 5293] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5296] <... openat resumed>) = 3 [pid 5296] chdir("./bus" [pid 5295] <... symlink resumed>) = 0 [pid 5294] <... memfd_create resumed>) = 5 [pid 5297] <... memfd_create resumed>) = 3 [pid 5297] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5296] <... chdir resumed>) = 0 [pid 5294] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5296] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5297] <... mmap resumed>) = 0x7f138d200000 [pid 5296] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5294] <... mmap resumed>) = 0x7f138d200000 [pid 5298] munmap(0x7f138d200000, 138412032 [pid 5295] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5298] <... munmap resumed>) = 0 [pid 5296] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5295] <... creat resumed>) = 4 [pid 5294] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5295] rename("./bus", "./file2" [pid 5293] <... creat resumed>) = 4 [pid 5296] <... symlink resumed>) = 0 [pid 5293] rename("./bus", "./file2" [pid 5298] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5295] <... rename resumed>) = -1 EEXIST (File exists) [pid 5298] <... openat resumed>) = 4 [pid 5297] 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"..., 524288 [pid 5296] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5295] memfd_create("syzkaller", 0 [pid 5293] <... rename resumed>) = -1 EEXIST (File exists) [pid 5298] ioctl(4, LOOP_SET_FD, 3 [pid 5295] <... memfd_create resumed>) = 5 [pid 5296] <... creat resumed>) = 4 [pid 5295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5293] memfd_create("syzkaller", 0 [pid 5295] <... mmap resumed>) = 0x7f138d200000 [pid 5297] <... write resumed>) = 524288 [pid 5296] rename("./bus", "./file2" [pid 5294] <... write resumed>) = 524288 [pid 5293] <... memfd_create resumed>) = 5 [pid 5297] munmap(0x7f138d200000, 138412032 [pid 5293] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5297] <... munmap resumed>) = 0 [pid 5296] <... rename resumed>) = -1 EEXIST (File exists) [pid 5294] munmap(0x7f138d200000, 138412032 [pid 5293] <... mmap resumed>) = 0x7f138d200000 [pid 5297] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5296] memfd_create("syzkaller", 0 [pid 5295] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5297] <... openat resumed>) = 4 [pid 5296] <... memfd_create resumed>) = 5 [pid 5295] <... write resumed>) = 524288 [pid 5294] <... munmap resumed>) = 0 [pid 5293] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5297] ioctl(4, LOOP_SET_FD, 3 [pid 5296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5294] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5298] <... ioctl resumed>) = 0 [pid 5296] <... mmap resumed>) = 0x7f138d200000 [pid 5294] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5294] close(5 [pid 5298] close(3) = 0 [ 76.429336][ T5298] loop1: detected capacity change from 0 to 1024 [pid 5296] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5298] close(4) = 0 [pid 5298] mkdir("./bus", 0777) = 0 [pid 5295] munmap(0x7f138d200000, 138412032 [pid 5298] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5295] <... munmap resumed>) = 0 [pid 5295] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5294] <... close resumed>) = 0 [pid 5293] <... write resumed>) = 524288 [pid 5295] close(5) = 0 [pid 5297] <... ioctl resumed>) = 0 [pid 5294] creat("./file1", 000 [pid 5293] munmap(0x7f138d200000, 138412032 [pid 5298] <... mount resumed>) = 0 [pid 5295] creat("./file1", 000 [pid 5297] close(3 [pid 5296] <... write resumed>) = 524288 [pid 5294] <... creat resumed>) = 5 [pid 5293] <... munmap resumed>) = 0 [pid 5296] munmap(0x7f138d200000, 138412032 [pid 5294] exit_group(0 [pid 5297] <... close resumed>) = 0 [pid 5293] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5294] <... exit_group resumed>) = ? [pid 5296] <... munmap resumed>) = 0 [pid 5298] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5293] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5298] <... openat resumed>) = 3 [pid 5297] close(4 [pid 5296] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5295] <... creat resumed>) = 5 [pid 5294] +++ exited with 0 +++ [pid 5293] close(5 [pid 5298] chdir("./bus" [pid 5297] <... close resumed>) = 0 [pid 5296] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5295] exit_group(0 [pid 5298] <... chdir resumed>) = 0 [pid 5297] mkdir("./bus", 0777 [pid 5296] close(5 [pid 5293] <... close resumed>) = 0 [pid 5298] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5295] <... exit_group resumed>) = ? [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5294, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5298] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5295] +++ exited with 0 +++ [pid 5296] <... close resumed>) = 0 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5298] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5295, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 76.471621][ T5297] loop5: detected capacity change from 0 to 1024 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5298] <... symlink resumed>) = 0 [pid 5297] <... mkdir resumed>) = 0 [pid 5296] creat("./file1", 000 [pid 5293] creat("./file1", 000 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5056] umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5297] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5296] <... creat resumed>) = 5 [pid 5293] <... creat resumed>) = 5 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", [pid 5293] exit_group(0 [pid 5296] exit_group(0 [pid 5293] <... exit_group resumed>) = ? [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5298] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5056] getdents64(3, [pid 5060] umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5296] <... exit_group resumed>) = ? [pid 5293] +++ exited with 0 +++ [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5293, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5060] <... openat resumed>) = 3 [pid 5298] <... creat resumed>) = 4 [pid 5060] newfstatat(3, "", [pid 5296] +++ exited with 0 +++ [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5296, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5060] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5298] rename("./bus", "./file2" [pid 5059] umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... openat resumed>) = 3 [pid 5058] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", [pid 5058] newfstatat(3, "", [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5058] getdents64(3, [pid 5056] <... umount2 resumed>) = 0 [pid 5298] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5298] memfd_create("syzkaller", 0 [pid 5059] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5298] <... memfd_create resumed>) = 5 [pid 5298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5298] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5297] <... mount resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5056] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5297] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5297] <... openat resumed>) = 3 [pid 5056] newfstatat(AT_FDCWD, "./37/bus", [pid 5060] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./36/bus", [pid 5059] <... umount2 resumed>) = 0 [pid 5297] chdir("./bus" [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5297] <... chdir resumed>) = 0 [pid 5060] umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5298] <... write resumed>) = 524288 [pid 5297] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = 0 [pid 5056] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5297] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... openat resumed>) = 4 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(4, "", [pid 5058] newfstatat(AT_FDCWD, "./37/bus", [pid 5297] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(AT_FDCWD, "./38/bus", [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5298] munmap(0x7f138d200000, 138412032 [pid 5297] <... symlink resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 4 [pid 5298] <... munmap resumed>) = 0 [pid 5297] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] getdents64(4, [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] newfstatat(4, "", [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5060] close(4 [pid 5058] newfstatat(4, "", [pid 5060] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] rmdir("./36/bus" [pid 5058] getdents64(4, [pid 5298] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] newfstatat(4, "", [pid 5058] getdents64(4, [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(4, [pid 5298] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] newfstatat(AT_FDCWD, "./36/binderfs", [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] close(4 [pid 5298] close(5 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5297] <... creat resumed>) = 4 [pid 5060] unlink("./36/binderfs" [pid 5059] getdents64(4, [pid 5060] <... unlink resumed>) = 0 [pid 5058] rmdir("./37/bus" [pid 5297] rename("./bus", "./file2" [pid 5060] getdents64(3, [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] getdents64(4, [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5297] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] close(3 [pid 5059] getdents64(4, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5297] memfd_create("syzkaller", 0 [pid 5056] close(4 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5298] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5059] close(4 [pid 5058] umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5056] rmdir("./37/bus" [pid 5059] rmdir("./38/bus" [pid 5060] rmdir("./36" [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5059] umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./38/binderfs", [pid 5298] creat("./file1", 000 [pid 5297] <... memfd_create resumed>) = 5 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] newfstatat(AT_FDCWD, "./37/binderfs", [pid 5059] unlink("./38/binderfs" [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5058] unlink("./37/binderfs" [pid 5056] newfstatat(AT_FDCWD, "./37/binderfs", [pid 5297] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] mkdir("./37", 0777 [pid 5059] getdents64(3, [pid 5058] <... unlink resumed>) = 0 [pid 5298] <... creat resumed>) = 5 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./37/binderfs" [pid 5058] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5298] exit_group(0 [pid 5060] <... mkdir resumed>) = 0 [pid 5058] close(3 [pid 5056] <... unlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(3, [pid 5298] <... exit_group resumed>) = ? [pid 5297] <... mmap resumed>) = 0x7f138d200000 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] close(3 [pid 5058] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5298] +++ exited with 0 +++ [pid 5060] <... openat resumed>) = 3 [pid 5058] rmdir("./37" [pid 5056] close(3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] <... close resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5298, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5297] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... ioctl resumed>) = 0 [pid 5059] rmdir("./38" [pid 5056] <... close resumed>) = 0 [pid 5060] close(3 [pid 5059] <... rmdir resumed>) = 0 [pid 5056] rmdir("./37" [pid 5060] <... close resumed>) = 0 [pid 5058] mkdir("./38", 0777 [pid 5057] umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] mkdir("./39", 0777 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] mkdir("./38", 0777 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... openat resumed>) = 3 [pid 5057] getdents64(3, [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5299 attached ) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... openat resumed>) = 3 [pid 5299] set_robust_list(0x555556c07660, 24 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5299 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5299] <... set_robust_list resumed>) = 0 [pid 5058] close(3 [pid 5299] chdir("./37" [pid 5059] close(3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5299] <... chdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5299] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... close resumed>) = 0 [pid 5299] <... prctl resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5299] setpgid(0, 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5300 attached [pid 5299] <... setpgid resumed>) = 0 [pid 5297] <... write resumed>) = 524288 [pid 5299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5300] set_robust_list(0x555556c07660, 24) = 0 [pid 5300] chdir("./38" [pid 5299] <... openat resumed>) = 3 [pid 5300] <... chdir resumed>) = 0 [pid 5300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5300] setpgid(0, 0) = 0 [pid 5300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5299] write(3, "1000", 4) = 4 [pid 5299] close(3 [pid 5300] <... openat resumed>) = 3 [pid 5299] <... close resumed>) = 0 [pid 5299] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5300 [pid 5300] write(3, "1000", 4) = 4 [pid 5300] close(3) = 0 [pid 5300] symlink("/dev/binderfs", "./binderfs") = 0 ./strace-static-x86_64: Process 5301 attached [pid 5299] memfd_create("syzkaller", 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5301 [pid 5300] memfd_create("syzkaller", 0 [pid 5299] <... memfd_create resumed>) = 3 [pid 5300] <... memfd_create resumed>) = 3 [pid 5299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5301] set_robust_list(0x555556c07660, 24 [pid 5297] munmap(0x7f138d200000, 138412032 [pid 5301] <... set_robust_list resumed>) = 0 [pid 5300] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5299] <... mmap resumed>) = 0x7f138d200000 [pid 5301] chdir("./39" [pid 5300] <... mmap resumed>) = 0x7f138d200000 [pid 5299] 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"..., 524288 [pid 5297] <... munmap resumed>) = 0 [pid 5301] <... chdir resumed>) = 0 [pid 5300] 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"..., 524288 [pid 5297] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5301] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5297] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5301] <... prctl resumed>) = 0 [pid 5297] close(5 [pid 5057] <... umount2 resumed>) = 0 [pid 5301] setpgid(0, 0 [pid 5297] <... close resumed>) = 0 [pid 5057] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5301] <... setpgid resumed>) = 0 [pid 5299] <... write resumed>) = 524288 [pid 5297] creat("./file1", 000 [pid 5301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] newfstatat(AT_FDCWD, "./38/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5301] <... openat resumed>) = 3 [pid 5300] <... write resumed>) = 524288 [pid 5297] <... creat resumed>) = 5 [pid 5057] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5301] write(3, "1000", 4 [pid 5297] exit_group(0 [pid 5057] <... openat resumed>) = 4 [pid 5301] <... write resumed>) = 4 [pid 5297] <... exit_group resumed>) = ? [pid 5301] close(3 [pid 5057] newfstatat(4, "", [pid 5299] munmap(0x7f138d200000, 138412032 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5299] <... munmap resumed>) = 0 [pid 5057] getdents64(4, [pid 5301] <... close resumed>) = 0 [pid 5297] +++ exited with 0 +++ [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5299] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] getdents64(4, [pid 5299] <... openat resumed>) = 4 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5299] ioctl(4, LOOP_SET_FD, 3 [pid 5057] close(4 [pid 5299] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... close resumed>) = 0 [pid 5299] ioctl(4, LOOP_CLR_FD [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5297, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5057] rmdir("./38/bus") = 0 [pid 5299] <... ioctl resumed>) = 0 [pid 5061] umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] newfstatat(AT_FDCWD, "./38/binderfs", [pid 5061] <... openat resumed>) = 3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] newfstatat(3, "", [pid 5057] unlink("./38/binderfs" [pid 5300] munmap(0x7f138d200000, 138412032 [pid 5299] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5300] <... munmap resumed>) = 0 [pid 5299] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] getdents64(3, [pid 5057] getdents64(3, [pid 5299] close(4 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5301] symlink("/dev/binderfs", "./binderfs" [pid 5299] <... close resumed>) = 0 [pid 5061] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5299] close(3 [pid 5057] close(3 [pid 5301] <... symlink resumed>) = 0 [pid 5299] <... close resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./38" [pid 5301] memfd_create("syzkaller", 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5301] <... memfd_create resumed>) = 3 [pid 5300] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... umount2 resumed>) = 0 [pid 5301] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5300] <... openat resumed>) = 4 [pid 5061] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] mkdir("./39", 0777 [pid 5301] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(3 [pid 5300] ioctl(4, LOOP_SET_FD, 3 [pid 5057] <... mkdir resumed>) = 0 [pid 5301] 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"..., 524288 [pid 5061] newfstatat(AT_FDCWD, "./39/bus", [pid 5056] <... close resumed>) = 0 [pid 5299] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 5302 attached [pid 5299] <... symlink resumed>) = 0 [pid 5061] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5302] set_robust_list(0x555556c07660, 24 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5302] <... set_robust_list resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... openat resumed>) = 3 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5302 [pid 5302] chdir("./38" [pid 5301] <... write resumed>) = 524288 [pid 5061] <... openat resumed>) = 4 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5061] newfstatat(4, "", [pid 5302] <... chdir resumed>) = 0 [pid 5299] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5302] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5299] <... creat resumed>) = 3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, [pid 5302] <... prctl resumed>) = 0 [pid 5302] setpgid(0, 0 [pid 5299] rename("./bus", "./file2" [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5302] <... setpgid resumed>) = 0 [pid 5061] getdents64(4, [pid 5302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5299] <... rename resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5302] <... openat resumed>) = 3 [pid 5061] close(4 [pid 5300] <... ioctl resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5300] close(3) = 0 [pid 5299] memfd_create("syzkaller", 0 [pid 5300] close(4 [pid 5302] write(3, "1000", 4 [pid 5299] <... memfd_create resumed>) = 4 [pid 5061] rmdir("./39/bus" [pid 5302] <... write resumed>) = 4 [pid 5301] munmap(0x7f138d200000, 138412032 [pid 5300] <... close resumed>) = 0 [pid 5299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5300] mkdir("./bus", 0777 [pid 5299] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... rmdir resumed>) = 0 [pid 5302] close(3 [pid 5301] <... munmap resumed>) = 0 [pid 5300] <... mkdir resumed>) = 0 [pid 5299] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5302] <... close resumed>) = 0 [pid 5301] openat(AT_FDCWD, "/dev/loop3", O_RDWR [ 76.779328][ T5300] loop2: detected capacity change from 0 to 1024 [pid 5300] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5302] symlink("/dev/binderfs", "./binderfs" [pid 5301] <... openat resumed>) = 4 [pid 5061] umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5302] <... symlink resumed>) = 0 [pid 5301] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./39/binderfs", [pid 5302] memfd_create("syzkaller", 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./39/binderfs" [pid 5302] <... memfd_create resumed>) = 3 [pid 5302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5061] <... unlink resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5302] 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"..., 524288 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5303 [pid 5061] rmdir("./39"./strace-static-x86_64: Process 5303 attached [pid 5303] set_robust_list(0x555556c07660, 24) = 0 [pid 5303] chdir("./39" [pid 5061] <... rmdir resumed>) = 0 [pid 5061] mkdir("./40", 0777) = 0 [pid 5302] <... write resumed>) = 524288 [pid 5301] <... ioctl resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5303] <... chdir resumed>) = 0 [pid 5301] close(3 [pid 5061] <... openat resumed>) = 3 [pid 5303] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5301] <... close resumed>) = 0 [pid 5303] <... prctl resumed>) = 0 [pid 5303] setpgid(0, 0 [pid 5301] close(4 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5303] <... setpgid resumed>) = 0 [pid 5301] <... close resumed>) = 0 [pid 5303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5301] mkdir("./bus", 0777 [pid 5299] <... write resumed>) = 524288 [pid 5303] <... openat resumed>) = 3 [pid 5301] <... mkdir resumed>) = 0 [pid 5299] munmap(0x7f138d200000, 138412032 [pid 5303] write(3, "1000", 4 [pid 5299] <... munmap resumed>) = 0 [pid 5303] <... write resumed>) = 4 [pid 5303] close(3 [pid 5300] <... mount resumed>) = 0 [pid 5303] <... close resumed>) = 0 [pid 5303] symlink("/dev/binderfs", "./binderfs" [ 76.841723][ T5301] loop3: detected capacity change from 0 to 1024 [pid 5299] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5303] <... symlink resumed>) = 0 [pid 5300] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5299] <... openat resumed>) = 5 [pid 5303] memfd_create("syzkaller", 0 [pid 5299] ioctl(5, LOOP_SET_FD, 4 [pid 5302] munmap(0x7f138d200000, 138412032 [pid 5301] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5300] <... openat resumed>) = 3 [pid 5300] chdir("./bus" [pid 5303] <... memfd_create resumed>) = 3 [pid 5302] <... munmap resumed>) = 0 [pid 5300] <... chdir resumed>) = 0 [pid 5300] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5303] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5300] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5303] <... mmap resumed>) = 0x7f138d200000 [pid 5303] 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"..., 524288 [pid 5302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5300] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5301] <... mount resumed>) = 0 [pid 5301] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5302] <... openat resumed>) = 4 [pid 5301] <... openat resumed>) = 3 [pid 5302] ioctl(4, LOOP_SET_FD, 3 [pid 5301] chdir("./bus" [pid 5300] <... symlink resumed>) = 0 [pid 5299] <... ioctl resumed>) = 0 [pid 5299] close(4) = 0 [pid 5299] close(5) = 0 [pid 5299] mkdir("./file1", 0777 [pid 5302] <... ioctl resumed>) = 0 [pid 5301] <... chdir resumed>) = 0 [pid 5300] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5299] <... mkdir resumed>) = 0 [pid 5303] <... write resumed>) = 524288 [pid 5299] mount("/dev/loop4", "./file1", "hfsplus", MS_NOSUID|MS_SYNCHRONOUS|MS_NOATIME, "" [pid 5301] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5300] <... creat resumed>) = 4 [pid 5301] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5300] rename("./bus", "./file2" [pid 5303] munmap(0x7f138d200000, 138412032 [pid 5300] <... rename resumed>) = -1 EEXIST (File exists) [pid 5303] <... munmap resumed>) = 0 [pid 5301] <... symlink resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5303] ioctl(4, LOOP_SET_FD, 3 [ 76.891908][ T5299] loop4: detected capacity change from 0 to 1024 [ 76.918054][ T5302] loop0: detected capacity change from 0 to 1024 [pid 5300] memfd_create("syzkaller", 0 [pid 5301] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5300] <... memfd_create resumed>) = 5 [pid 5061] close(3 [pid 5302] close(3 [pid 5301] <... creat resumed>) = 4 [pid 5300] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5299] <... mount resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5302] <... close resumed>) = 0 [pid 5301] rename("./bus", "./file2" [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5300] <... mmap resumed>) = 0x7f138d200000 [pid 5299] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY./strace-static-x86_64: Process 5304 attached [pid 5302] close(4 [pid 5301] <... rename resumed>) = -1 EEXIST (File exists) [pid 5300] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5299] <... openat resumed>) = 4 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5304 [pid 5304] set_robust_list(0x555556c07660, 24 [pid 5302] <... close resumed>) = 0 [pid 5304] <... set_robust_list resumed>) = 0 [pid 5302] mkdir("./bus", 0777 [pid 5301] memfd_create("syzkaller", 0 [pid 5304] chdir("./40" [pid 5302] <... mkdir resumed>) = 0 [pid 5301] <... memfd_create resumed>) = 5 [pid 5300] <... write resumed>) = 524288 [pid 5299] chdir("./file1" [pid 5304] <... chdir resumed>) = 0 [pid 5302] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5301] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5299] <... chdir resumed>) = 0 [pid 5299] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5299] creat("./file1", 000 [pid 5304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5304] setpgid(0, 0 [pid 5303] <... ioctl resumed>) = 0 [pid 5303] close(3) = 0 [ 76.950125][ T5303] loop1: detected capacity change from 0 to 1024 [pid 5304] <... setpgid resumed>) = 0 [pid 5303] close(4 [pid 5301] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5300] munmap(0x7f138d200000, 138412032 [pid 5303] <... close resumed>) = 0 [pid 5303] mkdir("./bus", 0777) = 0 [pid 5300] <... munmap resumed>) = 0 [ 77.011826][ T5299] [ 77.014456][ T5299] ====================================================== [ 77.021501][ T5299] WARNING: possible circular locking dependency detected [ 77.028532][ T5299] 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0 Not tainted [ 77.035542][ T5299] ------------------------------------------------------ [ 77.042545][ T5299] syz-executor755/5299 is trying to acquire lock: [ 77.048966][ T5299] ffff88807a8f40b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x882/0x9d0 [ 77.058833][ T5299] [ 77.058833][ T5299] but task is already holding lock: [ 77.066204][ T5299] ffff88807a114b48 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x204/0x9d0 [ 77.077351][ T5299] [ 77.077351][ T5299] which lock already depends on the new lock. [ 77.077351][ T5299] [ 77.087772][ T5299] [ 77.087772][ T5299] the existing dependency chain (in reverse order) is: [ 77.096780][ T5299] [ 77.096780][ T5299] -> #1 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}: [ 77.105809][ T5299] __mutex_lock+0x175/0x9d0 [ 77.110830][ T5299] hfsplus_file_extend+0x1c1/0x1090 [ 77.116547][ T5299] hfsplus_bmap_reserve+0x318/0x410 [ 77.122262][ T5299] hfsplus_rename_cat+0x2ad/0x1230 [ 77.127888][ T5299] hfsplus_rename+0x118/0x200 [ 77.133089][ T5299] vfs_rename+0xf83/0x20a0 [ 77.138072][ T5299] do_renameat2+0xc50/0xdc0 [ 77.143101][ T5299] __x64_sys_rename+0x81/0xa0 [ 77.148311][ T5299] do_syscall_64+0xd3/0x250 [ 77.153366][ T5299] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 77.159779][ T5299] [ 77.159779][ T5299] -> #0 (&tree->tree_lock){+.+.}-{3:3}: [ 77.167498][ T5299] __lock_acquire+0x2445/0x3b30 [ 77.172878][ T5299] lock_acquire+0x1ae/0x520 [ 77.177893][ T5299] __mutex_lock+0x175/0x9d0 [ 77.182921][ T5299] hfsplus_file_truncate+0x882/0x9d0 [ 77.188743][ T5299] hfsplus_setattr+0x1eb/0x310 [ 77.194030][ T5299] notify_change+0x742/0x11c0 [ 77.199222][ T5299] do_truncate+0x15c/0x220 [ 77.204157][ T5299] path_openat+0x24b6/0x2990 [ 77.209271][ T5299] do_filp_open+0x1de/0x430 [ 77.214290][ T5299] do_sys_openat2+0x176/0x1e0 [ 77.219477][ T5299] __x64_sys_creat+0xcd/0x120 [ 77.224666][ T5299] do_syscall_64+0xd3/0x250 [ 77.229691][ T5299] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 77.236134][ T5299] [ 77.236134][ T5299] other info that might help us debug this: [ 77.236134][ T5299] [ 77.246358][ T5299] Possible unsafe locking scenario: [ 77.246358][ T5299] [ 77.253789][ T5299] CPU0 CPU1 [ 77.259142][ T5299] ---- ---- [ 77.264491][ T5299] lock(&HFSPLUS_I(inode)->extents_lock); [ 77.270286][ T5299] lock(&tree->tree_lock); [ 77.277313][ T5299] lock(&HFSPLUS_I(inode)->extents_lock); [ 77.285634][ T5299] lock(&tree->tree_lock); [ 77.290130][ T5299] [ 77.290130][ T5299] *** DEADLOCK *** [ 77.290130][ T5299] [ 77.298259][ T5299] 3 locks held by syz-executor755/5299: [ 77.303788][ T5299] #0: ffff88807ad06420 (sb_writers#9){.+.+}-{0:0}, at: path_openat+0x1fb6/0x2990 [ 77.313005][ T5299] #1: ffff88807a114d40 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x14b/0x220 [ 77.323367][ T5299] #2: ffff88807a114b48 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x204/0x9d0 [ 77.334938][ T5299] [ 77.334938][ T5299] stack backtrace: [ 77.340818][ T5299] CPU: 1 PID: 5299 Comm: syz-executor755 Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0 [ 77.351220][ T5299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 77.361275][ T5299] Call Trace: [ 77.364549][ T5299] [ 77.367473][ T5299] dump_stack_lvl+0xd9/0x1b0 [ 77.372065][ T5299] check_noncircular+0x317/0x400 [ 77.377005][ T5299] ? print_circular_bug+0x5c0/0x5c0 [ 77.382200][ T5299] ? register_lock_class+0xb1/0x1230 [ 77.387497][ T5299] ? lockdep_lock+0xc6/0x200 [ 77.392106][ T5299] ? print_bfs_bug+0x30/0x30 [ 77.396695][ T5299] __lock_acquire+0x2445/0x3b30 [ 77.401540][ T5299] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 77.407514][ T5299] ? find_held_lock+0x2d/0x110 [ 77.412280][ T5299] lock_acquire+0x1ae/0x520 [ 77.416774][ T5299] ? hfsplus_file_truncate+0x882/0x9d0 [ 77.422233][ T5299] ? lock_sync+0x190/0x190 [ 77.426639][ T5299] ? __mutex_unlock_slowpath+0x165/0x650 [ 77.432268][ T5299] ? preempt_count_sub+0x160/0x160 [ 77.437373][ T5299] __mutex_lock+0x175/0x9d0 [ 77.441869][ T5299] ? hfsplus_file_truncate+0x882/0x9d0 [ 77.447341][ T5299] ? hfsplus_file_truncate+0x882/0x9d0 [ 77.452845][ T5299] ? _raw_spin_unlock+0x28/0x40 [ 77.457725][ T5299] ? mutex_trylock+0x130/0x130 [ 77.462489][ T5299] ? hfsplus_file_truncate+0x882/0x9d0 [ 77.467947][ T5299] hfsplus_file_truncate+0x882/0x9d0 [ 77.473233][ T5299] ? __up_read+0x1fc/0x760 [ 77.477647][ T5299] ? hfsplus_get_block+0x9e0/0x9e0 [ 77.482762][ T5299] ? inode_newsize_ok+0x13c/0x200 [ 77.487779][ T5299] hfsplus_setattr+0x1eb/0x310 [ 77.492538][ T5299] ? hfsplus_file_fsync+0x5d0/0x5d0 [ 77.497740][ T5299] notify_change+0x742/0x11c0 [ 77.502453][ T5299] do_truncate+0x15c/0x220 [ 77.506904][ T5299] ? file_open_root+0x450/0x450 [ 77.511784][ T5299] ? common_perm_cond+0x242/0x560 [ 77.516827][ T5299] path_openat+0x24b6/0x2990 [ 77.521428][ T5299] ? path_lookupat+0x770/0x770 [ 77.526178][ T5299] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 77.532160][ T5299] ? find_held_lock+0x2d/0x110 [ 77.536943][ T5299] do_filp_open+0x1de/0x430 [ 77.541441][ T5299] ? may_open_dev+0xf0/0xf0 [ 77.545938][ T5299] ? _raw_spin_unlock+0x28/0x40 [ 77.550785][ T5299] ? alloc_fd+0x2da/0x6c0 [ 77.555106][ T5299] do_sys_openat2+0x176/0x1e0 [ 77.559774][ T5299] ? build_open_flags+0x690/0x690 [ 77.564788][ T5299] ? ptrace_notify+0xf4/0x130 [ 77.569455][ T5299] ? reacquire_held_locks+0x4c0/0x4c0 [ 77.574819][ T5299] __x64_sys_creat+0xcd/0x120 [ 77.579492][ T5299] ? __x64_compat_sys_openat+0x200/0x200 [ 77.585120][ T5299] ? _raw_spin_unlock_irq+0x2e/0x50 [ 77.590341][ T5299] ? ptrace_notify+0xf4/0x130 [ 77.595012][ T5299] ? syscall_trace_enter+0xb3/0x200 [ 77.600208][ T5299] do_syscall_64+0xd3/0x250 [ 77.604726][ T5299] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 77.610620][ T5299] RIP: 0033:0x7f13957993d9 [ 77.615025][ T5299] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 77.634635][ T5299] RSP: 002b:00007fffc05fd538 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 77.643044][ T5299] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f13957993d9 [ 77.651009][ T5299] RDX: 00007f1395798311 RSI: 0000000000000000 RDI: 0000000020000040 [pid 5304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5302] <... mount resumed>) = 0 [pid 5301] <... write resumed>) = 524288 [pid 5300] openat(AT_FDCWD, "/dev/loop2", O_RDWR [ 77.658978][ T5299] RBP: 0073756c70736668 R08: 000000000000069b R09: 00007fffc05fd570 [ 77.666959][ T5299] R10: 00007fffc05fd400 R11: 0000000000000246 R12: 00007fffc05fd55c [ 77.674930][ T5299] R13: 0000000000000025 R14: 431bde82d7b634db R15: 00007fffc05fd590 [ 77.682905][ T5299] [pid 5303] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5304] <... openat resumed>) = 3 [pid 5302] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5301] munmap(0x7f138d200000, 138412032 [pid 5300] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5299] <... creat resumed>) = 5 [pid 5304] write(3, "1000", 4 [pid 5302] <... openat resumed>) = 3 [pid 5301] <... munmap resumed>) = 0 [pid 5300] close(5 [pid 5299] exit_group(0 [pid 5304] <... write resumed>) = 4 [pid 5302] chdir("./bus" [pid 5301] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5300] <... close resumed>) = 0 [pid 5304] close(3 [pid 5302] <... chdir resumed>) = 0 [pid 5301] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5300] creat("./file1", 000 [pid 5299] <... exit_group resumed>) = ? [pid 5304] <... close resumed>) = 0 [pid 5302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5301] close(5 [pid 5304] symlink("/dev/binderfs", "./binderfs" [pid 5302] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5301] <... close resumed>) = 0 [pid 5299] +++ exited with 0 +++ [pid 5304] <... symlink resumed>) = 0 [pid 5302] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5301] creat("./file1", 000 [pid 5304] memfd_create("syzkaller", 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5299, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5304] <... memfd_create resumed>) = 3 [pid 5301] <... creat resumed>) = 5 [pid 5301] exit_group(0 [pid 5300] <... creat resumed>) = 5 [pid 5304] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5301] <... exit_group resumed>) = ? [pid 5300] exit_group(0 [pid 5060] umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5304] <... mmap resumed>) = 0x7f138d200000 [pid 5301] +++ exited with 0 +++ [pid 5300] <... exit_group resumed>) = ? [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5300] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5301, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5060] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5300, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5060] newfstatat(3, "", [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5304] 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"..., 524288 [pid 5303] <... mount resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] <... restart_syscall resumed>) = 0 [pid 5303] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] getdents64(3, [pid 5059] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5303] <... openat resumed>) = 3 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 6 entries */, 32768) = 416 [pid 5059] newfstatat(AT_FDCWD, "./39/bus", [pid 5058] umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5303] chdir("./bus" [pid 5302] <... symlink resumed>) = 0 [pid 5060] umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5303] <... chdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5302] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] newfstatat(AT_FDCWD, "./37/binderfs", [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 3 [pid 5303] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(3, "", [pid 5303] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] unlink("./37/binderfs" [pid 5059] <... openat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5304] <... write resumed>) = 524288 [pid 5303] <... symlink resumed>) = 0 [pid 5302] <... creat resumed>) = 4 [pid 5304] munmap(0x7f138d200000, 138412032 [pid 5303] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5302] rename("./bus", "./file2" [pid 5060] <... unlink resumed>) = 0 [pid 5059] newfstatat(4, "", [pid 5058] getdents64(3, [pid 5304] <... munmap resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] getdents64(4, [pid 5058] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5302] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] umount2("./37/file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5304] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5302] memfd_create("syzkaller", 0 [pid 5304] <... openat resumed>) = 4 [pid 5059] getdents64(4, [pid 5302] <... memfd_create resumed>) = 5 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5304] ioctl(4, LOOP_SET_FD, 3 [pid 5302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] close(4 [pid 5302] <... mmap resumed>) = 0x7f138d200000 [pid 5302] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5303] <... creat resumed>) = 4 [pid 5060] newfstatat(AT_FDCWD, "./37/file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", [pid 5059] rmdir("./39/bus" [pid 5058] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5303] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5302] <... write resumed>) = 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=5, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5303] memfd_create("syzkaller", 0 [pid 5302] munmap(0x7f138d200000, 138412032 [pid 5304] <... ioctl resumed>) = 0 [pid 5303] <... memfd_create resumed>) = 5 [pid 5302] <... munmap resumed>) = 0 [pid 5060] unlink("./37/file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./38/bus", [pid 5304] close(3 [pid 5303] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5304] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./39/binderfs", [pid 5058] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5304] close(4 [pid 5303] <... mmap resumed>) = 0x7f138d200000 [pid 5302] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] umount2("./37/file2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] unlink("./39/binderfs" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5302] close(5 [pid 5059] <... unlink resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5304] <... close resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./37/file2", [pid 5059] getdents64(3, [pid 5058] newfstatat(4, "", [pid 5304] mkdir("./bus", 0777 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] close(3 [pid 5058] getdents64(4, [pid 5060] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./37/file2" [pid 5059] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5304] <... mkdir resumed>) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5059] rmdir("./39" [pid 5058] getdents64(4, [pid 5304] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] umount2("./37/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5303] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5302] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./38/bus" [pid 5303] <... write resumed>) = 524288 [pid 5302] creat("./file1", 000 [pid 5060] <... umount2 resumed>) = 0 [pid 5059] mkdir("./40", 0777 [pid 5058] <... rmdir resumed>) = 0 [pid 5060] umount2("./37/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5304] <... mount resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5304] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] newfstatat(AT_FDCWD, "./37/file1", [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] newfstatat(AT_FDCWD, "./38/binderfs", [pid 5304] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5304] chdir("./bus" [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5304] <... chdir resumed>) = 0 [pid 5060] umount2("./37/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] unlink("./38/binderfs" [pid 5304] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5304] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5303] munmap(0x7f138d200000, 138412032 [pid 5058] <... unlink resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./37/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5302] <... creat resumed>) = 5 [pid 5304] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5303] <... munmap resumed>) = 0 [pid 5302] exit_group(0 [pid 5060] <... openat resumed>) = 4 [pid 5058] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] newfstatat(4, "", [pid 5303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5302] <... exit_group resumed>) = ? [pid 5058] close(3 [pid 5304] <... symlink resumed>) = 0 [pid 5303] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5302] +++ exited with 0 +++ [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5304] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] getdents64(4, [pid 5058] <... close resumed>) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5302, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5303] close(5 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] rmdir("./38" [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5304] <... creat resumed>) = 4 [ 77.789249][ T5304] loop5: detected capacity change from 0 to 1024 [pid 5060] getdents64(4, [pid 5058] <... rmdir resumed>) = 0 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5304] rename("./bus", "./file2" [pid 5058] mkdir("./39", 0777 [pid 5056] umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", [pid 5304] <... rename resumed>) = -1 EEXIST (File exists) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5304] memfd_create("syzkaller", 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5304] <... memfd_create resumed>) = 5 [pid 5303] <... close resumed>) = 0 [pid 5060] close(4 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] <... umount2 resumed>) = 0 [pid 5304] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./38/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5304] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... close resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./38/bus" [pid 5060] rmdir("./37/file1" [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] <... rmdir resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5060] getdents64(3, [pid 5056] umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5304] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5303] creat("./file1", 000 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5304] <... write resumed>) = 524288 [pid 5060] <... close resumed>) = 0 [pid 5060] rmdir("./37" [pid 5056] newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./38/binderfs" [pid 5060] <... rmdir resumed>) = 0 [pid 5304] munmap(0x7f138d200000, 138412032 [pid 5060] mkdir("./38", 0777 [pid 5056] <... unlink resumed>) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5304] <... munmap resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./38" [pid 5304] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5303] <... creat resumed>) = 5 [pid 5060] <... mkdir resumed>) = 0 [pid 5304] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] <... rmdir resumed>) = 0 [pid 5304] close(5 [pid 5303] exit_group(0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5303] <... exit_group resumed>) = ? [pid 5056] mkdir("./39", 0777) = 0 [pid 5304] <... close resumed>) = 0 [pid 5303] +++ exited with 0 +++ [pid 5060] <... openat resumed>) = 3 [pid 5059] <... ioctl resumed>) = 0 [pid 5304] creat("./file1", 000 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] close(3) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5303, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5304] <... creat resumed>) = 5 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... openat resumed>) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5304] exit_group(0./strace-static-x86_64: Process 5305 attached [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5305] set_robust_list(0x555556c07660, 24 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5305 [pid 5305] <... set_robust_list resumed>) = 0 [pid 5058] close(3 [pid 5057] newfstatat(3, "", [pid 5305] chdir("./40" [pid 5304] <... exit_group resumed>) = ? [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5305] <... chdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5305] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5305] <... prctl resumed>) = 0 [pid 5057] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5305] setpgid(0, 0./strace-static-x86_64: Process 5306 attached ) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5306 [pid 5057] <... umount2 resumed>) = 0 [pid 5306] set_robust_list(0x555556c07660, 24 [pid 5305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5306] <... set_robust_list resumed>) = 0 [pid 5305] <... openat resumed>) = 3 [pid 5304] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5304, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5306] chdir("./39" [pid 5305] write(3, "1000", 4 [pid 5306] <... chdir resumed>) = 0 [pid 5305] <... write resumed>) = 4 [pid 5306] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5305] close(3 [pid 5057] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5306] <... prctl resumed>) = 0 [pid 5305] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5305] symlink("/dev/binderfs", "./binderfs" [pid 5061] umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5306] setpgid(0, 0 [pid 5305] <... symlink resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5306] <... setpgid resumed>) = 0 [pid 5305] memfd_create("syzkaller", 0 [pid 5061] newfstatat(3, "", [pid 5306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5305] <... memfd_create resumed>) = 3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, [pid 5057] newfstatat(AT_FDCWD, "./39/bus", [pid 5305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5305] <... mmap resumed>) = 0x7f138d200000 [pid 5061] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5306] <... openat resumed>) = 3 [pid 5305] 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"..., 524288 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5057] getdents64(4, [pid 5306] write(3, "1000", 4) = 4 [pid 5061] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./40/bus", [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] getdents64(4, [pid 5061] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(4 [pid 5061] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5057] rmdir("./39/bus" [pid 5061] newfstatat(4, "", [pid 5057] <... rmdir resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(4, [pid 5305] <... write resumed>) = 524288 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5306] close(3 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] newfstatat(AT_FDCWD, "./39/binderfs", [pid 5061] getdents64(4, [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] unlink("./39/binderfs" [pid 5061] close(4 [pid 5057] <... unlink resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5306] <... close resumed>) = 0 [pid 5305] munmap(0x7f138d200000, 138412032 [pid 5061] rmdir("./40/bus" [pid 5060] close(3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5306] symlink("/dev/binderfs", "./binderfs" [pid 5305] <... munmap resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5306] <... symlink resumed>) = 0 [pid 5305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] close(3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... close resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./40/binderfs", [pid 5057] rmdir("./39" [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5307 attached [pid 5306] memfd_create("syzkaller", 0 [pid 5305] <... openat resumed>) = 4 [pid 5061] unlink("./40/binderfs" [pid 5056] <... ioctl resumed>) = 0 [pid 5307] set_robust_list(0x555556c07660, 24 [pid 5305] ioctl(4, LOOP_SET_FD, 3 [pid 5307] <... set_robust_list resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5061] getdents64(3, [pid 5057] mkdir("./40", 0777 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5061] close(3) = 0 [pid 5061] rmdir("./40") = 0 [pid 5061] mkdir("./41", 0777) = 0 [pid 5306] <... memfd_create resumed>) = 3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5307 [pid 5307] chdir("./38") = 0 [pid 5306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5305] <... ioctl resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5306] <... mmap resumed>) = 0x7f138d200000 [pid 5305] close(3 [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5305] <... close resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5308 [pid 5305] close(4) = 0 [pid 5305] mkdir("./bus", 0777) = 0 ./strace-static-x86_64: Process 5308 attached [pid 5306] 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"..., 524288 [pid 5305] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5308] set_robust_list(0x555556c07660, 24 [pid 5307] setpgid(0, 0 [pid 5308] <... set_robust_list resumed>) = 0 [pid 5307] <... setpgid resumed>) = 0 [pid 5308] chdir("./39") = 0 [pid 5307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5308] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5307] <... openat resumed>) = 3 [pid 5306] <... write resumed>) = 524288 [pid 5057] <... ioctl resumed>) = 0 [pid 5308] <... prctl resumed>) = 0 [pid 5307] write(3, "1000", 4 [pid 5306] munmap(0x7f138d200000, 138412032 [pid 5308] setpgid(0, 0 [pid 5306] <... munmap resumed>) = 0 [pid 5308] <... setpgid resumed>) = 0 [pid 5307] <... write resumed>) = 4 [pid 5307] close(3 [pid 5308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] close(3) = 0 [pid 5307] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5307] symlink("/dev/binderfs", "./binderfs" [pid 5308] <... openat resumed>) = 3 [pid 5307] <... symlink resumed>) = 0 [pid 5307] memfd_create("syzkaller", 0 [pid 5308] write(3, "1000", 4) = 4 [pid 5308] close(3) = 0 [pid 5308] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5307] <... memfd_create resumed>) = 3 [pid 5306] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5305] <... mount resumed>) = 0 [pid 5308] memfd_create("syzkaller", 0 [pid 5307] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5306] <... openat resumed>) = 4 [pid 5305] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5307] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5309 [pid 5305] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5309 attached [pid 5309] set_robust_list(0x555556c07660, 24) = 0 [pid 5309] chdir("./40" [pid 5305] chdir("./bus" [pid 5309] <... chdir resumed>) = 0 [pid 5309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5306] ioctl(4, LOOP_SET_FD, 3 [pid 5305] <... chdir resumed>) = 0 [pid 5309] setpgid(0, 0) = 0 [ 77.954082][ T5305] loop3: detected capacity change from 0 to 1024 [pid 5309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... ioctl resumed>) = 0 [pid 5309] <... openat resumed>) = 3 [pid 5308] <... memfd_create resumed>) = 3 [pid 5307] 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"..., 524288 [pid 5305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] close(3 [pid 5309] write(3, "1000", 4 [pid 5061] <... close resumed>) = 0 [pid 5309] <... write resumed>) = 4 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5305] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5309] close(3) = 0 [pid 5309] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5309] memfd_create("syzkaller", 0) = 3 [pid 5308] <... mmap resumed>) = 0x7f138d200000 [pid 5307] <... write resumed>) = 524288 [pid 5305] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5305] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 5310 attached [pid 5309] 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"..., 524288 [pid 5307] munmap(0x7f138d200000, 138412032 [pid 5306] <... ioctl resumed>) = 0 [pid 5305] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5310] set_robust_list(0x555556c07660, 24 [pid 5307] <... munmap resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5310 [pid 5307] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5305] <... creat resumed>) = 4 [pid 5307] <... openat resumed>) = 4 [ 78.014210][ T5306] loop2: detected capacity change from 0 to 1024 [pid 5310] <... set_robust_list resumed>) = 0 [pid 5307] ioctl(4, LOOP_SET_FD, 3 [pid 5306] close(3 [pid 5305] rename("./bus", "./file2" [pid 5310] chdir("./41" [pid 5306] <... close resumed>) = 0 [pid 5310] <... chdir resumed>) = 0 [pid 5306] close(4 [pid 5310] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5306] <... close resumed>) = 0 [pid 5310] <... prctl resumed>) = 0 [pid 5306] mkdir("./bus", 0777 [pid 5310] setpgid(0, 0 [pid 5306] <... mkdir resumed>) = 0 [pid 5310] <... setpgid resumed>) = 0 [pid 5310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5309] <... write resumed>) = 524288 [pid 5306] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5310] write(3, "1000", 4) = 4 [pid 5310] close(3) = 0 [pid 5310] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5309] munmap(0x7f138d200000, 138412032 [pid 5308] 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"..., 524288 [pid 5307] <... ioctl resumed>) = 0 [pid 5305] <... rename resumed>) = -1 EEXIST (File exists) [pid 5310] memfd_create("syzkaller", 0 [pid 5305] memfd_create("syzkaller", 0 [pid 5310] <... memfd_create resumed>) = 3 [pid 5310] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5305] <... memfd_create resumed>) = 5 [pid 5309] <... munmap resumed>) = 0 [pid 5307] close(3 [pid 5305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5309] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5307] <... close resumed>) = 0 [pid 5305] <... mmap resumed>) = 0x7f138d200000 [pid 5310] 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"..., 524288 [pid 5309] <... openat resumed>) = 4 [pid 5308] <... write resumed>) = 524288 [pid 5307] close(4 [pid 5305] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5309] ioctl(4, LOOP_SET_FD, 3 [pid 5308] munmap(0x7f138d200000, 138412032 [pid 5307] <... close resumed>) = 0 [pid 5308] <... munmap resumed>) = 0 [pid 5306] <... mount resumed>) = 0 [pid 5310] <... write resumed>) = 524288 [pid 5306] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5306] chdir("./bus") = 0 [pid 5306] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5306] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5306] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5308] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5307] mkdir("./bus", 0777 [pid 5306] <... creat resumed>) = 4 [pid 5310] munmap(0x7f138d200000, 138412032 [pid 5306] rename("./bus", "./file2" [pid 5310] <... munmap resumed>) = 0 [pid 5309] <... ioctl resumed>) = 0 [pid 5308] ioctl(4, LOOP_SET_FD, 3 [pid 5307] <... mkdir resumed>) = 0 [pid 5306] <... rename resumed>) = -1 EEXIST (File exists) [pid 5305] <... write resumed>) = 524288 [pid 5306] memfd_create("syzkaller", 0 [pid 5310] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5306] <... memfd_create resumed>) = 5 [ 78.061348][ T5307] loop4: detected capacity change from 0 to 1024 [ 78.088088][ T5309] loop1: detected capacity change from 0 to 1024 [ 78.100540][ T5308] loop0: detected capacity change from 0 to 1024 [pid 5310] ioctl(4, LOOP_SET_FD, 3 [pid 5306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5309] close(3 [pid 5308] <... ioctl resumed>) = 0 [pid 5307] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5306] <... mmap resumed>) = 0x7f138d200000 [pid 5305] munmap(0x7f138d200000, 138412032 [pid 5309] <... close resumed>) = 0 [pid 5308] close(3 [pid 5306] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5305] <... munmap resumed>) = 0 [pid 5309] close(4 [pid 5308] <... close resumed>) = 0 [pid 5305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5309] <... close resumed>) = 0 [pid 5308] close(4 [pid 5305] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5309] mkdir("./bus", 0777 [pid 5308] <... close resumed>) = 0 [pid 5305] close(5) = 0 [pid 5309] <... mkdir resumed>) = 0 [pid 5308] mkdir("./bus", 0777 [pid 5306] <... write resumed>) = 524288 [pid 5305] creat("./file1", 000 [pid 5308] <... mkdir resumed>) = 0 [pid 5308] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5307] <... mount resumed>) = 0 [pid 5308] <... mount resumed>) = 0 [pid 5309] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5308] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5307] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5305] <... creat resumed>) = 5 [pid 5308] <... openat resumed>) = 3 [pid 5307] <... openat resumed>) = 3 [pid 5305] exit_group(0 [pid 5308] chdir("./bus" [pid 5307] chdir("./bus" [pid 5305] <... exit_group resumed>) = ? [pid 5308] <... chdir resumed>) = 0 [pid 5307] <... chdir resumed>) = 0 [pid 5306] munmap(0x7f138d200000, 138412032) = 0 [pid 5305] +++ exited with 0 +++ [pid 5308] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5307] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5305, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5310] <... ioctl resumed>) = 0 [pid 5309] <... mount resumed>) = 0 [pid 5308] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5307] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5306] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5310] close(3 [pid 5309] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5308] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5307] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5306] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5310] <... close resumed>) = 0 [pid 5308] <... symlink resumed>) = 0 [pid 5306] close(5 [pid 5308] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5307] <... symlink resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5310] close(4 [pid 5309] <... openat resumed>) = 3 [pid 5308] <... creat resumed>) = 4 [pid 5307] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5306] <... close resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5309] chdir("./bus" [pid 5308] rename("./bus", "./file2" [pid 5310] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [ 78.107296][ T5310] loop5: detected capacity change from 0 to 1024 [pid 5310] mkdir("./bus", 0777 [pid 5059] newfstatat(3, "", [pid 5310] <... mkdir resumed>) = 0 [pid 5309] <... chdir resumed>) = 0 [pid 5308] <... rename resumed>) = -1 EEXIST (File exists) [pid 5307] <... creat resumed>) = 4 [pid 5306] creat("./file1", 000 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5310] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] getdents64(3, [pid 5306] <... creat resumed>) = 5 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5306] exit_group(0 [pid 5309] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5308] memfd_create("syzkaller", 0 [pid 5307] rename("./bus", "./file2" [pid 5306] <... exit_group resumed>) = ? [pid 5308] <... memfd_create resumed>) = 5 [pid 5308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5306] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5306, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5058] umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5309] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... openat resumed>) = 3 [pid 5309] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, [pid 5310] <... mount resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5310] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] <... umount2 resumed>) = 0 [pid 5058] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5310] <... openat resumed>) = 3 [pid 5307] <... rename resumed>) = -1 EEXIST (File exists) [pid 5310] chdir("./bus" [pid 5309] <... symlink resumed>) = 0 [pid 5308] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5307] memfd_create("syzkaller", 0 [pid 5059] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5310] <... chdir resumed>) = 0 [pid 5310] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5309] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5310] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5310] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5307] <... memfd_create resumed>) = 5 [pid 5059] newfstatat(AT_FDCWD, "./40/bus", [pid 5307] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5307] <... mmap resumed>) = 0x7f138d200000 [pid 5310] <... creat resumed>) = 4 [pid 5059] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5310] rename("./bus", "./file2" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5310] <... rename resumed>) = -1 EEXIST (File exists) [pid 5309] <... creat resumed>) = 4 [pid 5059] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5310] memfd_create("syzkaller", 0 [pid 5309] rename("./bus", "./file2" [pid 5310] <... memfd_create resumed>) = 5 [pid 5309] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... openat resumed>) = 4 [pid 5310] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5309] memfd_create("syzkaller", 0 [pid 5310] <... mmap resumed>) = 0x7f138d200000 [pid 5309] <... memfd_create resumed>) = 5 [pid 5059] newfstatat(4, "", [pid 5310] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5307] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5309] <... mmap resumed>) = 0x7f138d200000 [pid 5059] getdents64(4, [pid 5309] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./40/bus" [pid 5310] <... write resumed>) = 524288 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5059] umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5308] <... write resumed>) = 524288 [pid 5307] <... write resumed>) = 524288 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5308] munmap(0x7f138d200000, 138412032 [pid 5310] munmap(0x7f138d200000, 138412032) = 0 [pid 5309] <... write resumed>) = 524288 [pid 5308] <... munmap resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5308] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] unlink("./40/binderfs" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5308] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5310] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... unlink resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./39/bus", [pid 5310] close(5 [pid 5309] munmap(0x7f138d200000, 138412032 [pid 5310] <... close resumed>) = 0 [pid 5309] <... munmap resumed>) = 0 [pid 5309] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5309] close(5) = 0 [pid 5059] getdents64(3, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5309] creat("./file1", 000 [pid 5310] creat("./file1", 000 [pid 5308] close(5 [pid 5307] munmap(0x7f138d200000, 138412032 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] close(3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... close resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5308] <... close resumed>) = 0 [pid 5059] rmdir("./40" [pid 5058] <... openat resumed>) = 4 [pid 5307] <... munmap resumed>) = 0 [pid 5058] newfstatat(4, "", [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] mkdir("./41", 0777 [pid 5058] getdents64(4, [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5309] <... creat resumed>) = 5 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] getdents64(4, [pid 5309] exit_group(0 [pid 5307] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5309] <... exit_group resumed>) = ? [pid 5307] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... openat resumed>) = 3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5308] creat("./file1", 000 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] close(4 [pid 5309] +++ exited with 0 +++ [pid 5308] <... creat resumed>) = 5 [pid 5058] <... close resumed>) = 0 [pid 5308] exit_group(0 [pid 5058] rmdir("./39/bus" [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5309, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5057] umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5308] <... exit_group resumed>) = ? [pid 5058] umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5310] <... creat resumed>) = 5 [pid 5308] +++ exited with 0 +++ [pid 5307] close(5 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(3, "", [pid 5058] newfstatat(AT_FDCWD, "./39/binderfs", [pid 5310] exit_group(0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5308, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5058] unlink("./39/binderfs" [pid 5310] <... exit_group resumed>) = ? [pid 5057] getdents64(3, [pid 5310] +++ exited with 0 +++ [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5310, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5058] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] rmdir("./39" [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5056] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5307] <... close resumed>) = 0 [pid 5061] <... restart_syscall resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] newfstatat(3, "", [pid 5058] mkdir("./40", 0777 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(3, [pid 5307] creat("./file1", 000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... mkdir resumed>) = 0 [pid 5056] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... openat resumed>) = 3 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] newfstatat(3, "", [pid 5058] <... openat resumed>) = 3 [pid 5307] <... creat resumed>) = 5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5307] exit_group(0 [pid 5061] getdents64(3, [pid 5307] <... exit_group resumed>) = ? [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5061] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5307] +++ exited with 0 +++ [pid 5059] <... ioctl resumed>) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5307, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5060] umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = 0 [pid 5059] close(3 [pid 5056] <... umount2 resumed>) = 0 [pid 5056] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./39/bus", [pid 5059] <... close resumed>) = 0 [pid 5060] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 5311 attached [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5311] set_robust_list(0x555556c07660, 24 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5311 [pid 5311] <... set_robust_list resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./41/bus", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5311] chdir("./41" [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] newfstatat(AT_FDCWD, "./38/bus", [pid 5057] newfstatat(AT_FDCWD, "./40/bus", [pid 5056] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5311] <... chdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5311] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 4 [pid 5311] <... prctl resumed>) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] newfstatat(4, "", [pid 5311] setpgid(0, 0 [pid 5061] newfstatat(4, "", [pid 5060] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... openat resumed>) = 4 [pid 5311] <... setpgid resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] newfstatat(4, "", [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] getdents64(4, [pid 5060] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, [pid 5061] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5061] close(4 [pid 5057] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5057] rmdir("./40/bus" [pid 5061] rmdir("./41/bus" [pid 5057] <... rmdir resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5057] umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./40/binderfs" [pid 5061] umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... unlink resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5061] unlink("./41/binderfs" [pid 5057] rmdir("./40" [pid 5061] <... unlink resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5057] mkdir("./41", 0777 [pid 5061] rmdir("./41" [pid 5057] <... mkdir resumed>) = 0 [pid 5311] <... openat resumed>) = 3 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] newfstatat(4, "", [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] getdents64(4, [pid 5311] write(3, "1000", 4 [pid 5061] mkdir("./42", 0777 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5311] <... write resumed>) = 4 [pid 5060] getdents64(4, [pid 5311] close(3 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5311] <... close resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] getdents64(4, [pid 5311] symlink("/dev/binderfs", "./binderfs" [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5311] <... symlink resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] close(4 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5311] memfd_create("syzkaller", 0 [pid 5060] <... close resumed>) = 0 [pid 5056] close(4 [pid 5311] <... memfd_create resumed>) = 3 [pid 5060] rmdir("./38/bus" [pid 5056] <... close resumed>) = 0 [pid 5311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... openat resumed>) = 3 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] rmdir("./39/bus" [pid 5311] <... mmap resumed>) = 0x7f138d200000 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5311] 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"..., 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./38/binderfs" [pid 5056] umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... unlink resumed>) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] close(3 [pid 5056] newfstatat(AT_FDCWD, "./39/binderfs", [pid 5311] <... write resumed>) = 524288 [pid 5060] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] rmdir("./38" [pid 5311] munmap(0x7f138d200000, 138412032 [pid 5058] close(3 [pid 5056] unlink("./39/binderfs" [pid 5311] <... munmap resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5060] mkdir("./39", 0777 [pid 5311] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] <... mkdir resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... unlink resumed>) = 0 [pid 5311] <... openat resumed>) = 4 [pid 5056] getdents64(3, [pid 5311] ioctl(4, LOOP_SET_FD, 3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 5312 attached [pid 5311] <... ioctl resumed>) = 0 [pid 5056] close(3 [pid 5060] <... openat resumed>) = 3 [pid 5312] set_robust_list(0x555556c07660, 24 [pid 5311] close(3 [pid 5061] <... ioctl resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5312 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5311] <... close resumed>) = 0 [pid 5056] rmdir("./39" [pid 5311] close(4 [pid 5312] <... set_robust_list resumed>) = 0 [pid 5057] close(3 [pid 5312] chdir("./40") = 0 [pid 5057] <... close resumed>) = 0 [pid 5312] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5312] <... prctl resumed>) = 0 [pid 5311] <... close resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5311] mkdir("./bus", 0777 [pid 5056] mkdir("./40", 0777 [pid 5312] setpgid(0, 0) = 0 [pid 5311] <... mkdir resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5313 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5311] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5313 attached ) = 3 [pid 5313] set_robust_list(0x555556c07660, 24) = 0 [pid 5312] write(3, "1000", 4 [pid 5313] chdir("./41" [pid 5312] <... write resumed>) = 4 [pid 5312] close(3) = 0 [pid 5312] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5313] <... chdir resumed>) = 0 [pid 5312] memfd_create("syzkaller", 0 [pid 5313] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5312] <... memfd_create resumed>) = 3 [pid 5313] <... prctl resumed>) = 0 [pid 5312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5313] setpgid(0, 0 [pid 5312] <... mmap resumed>) = 0x7f138d200000 [pid 5313] <... setpgid resumed>) = 0 [pid 5313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5312] 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"..., 524288 [pid 5061] close(3) = 0 [pid 5313] <... openat resumed>) = 3 [pid 5313] write(3, "1000", 4) = 4 [pid 5313] close(3) = 0 [pid 5313] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5313] memfd_create("syzkaller", 0) = 3 [pid 5313] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5313] 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"..., 524288 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5314 attached [pid 5312] <... write resumed>) = 524288 [pid 5311] <... mount resumed>) = 0 [pid 5314] set_robust_list(0x555556c07660, 24 [pid 5311] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5314 [pid 5311] <... openat resumed>) = 3 [pid 5314] <... set_robust_list resumed>) = 0 [pid 5311] chdir("./bus" [pid 5314] chdir("./42" [pid 5311] <... chdir resumed>) = 0 [pid 5314] <... chdir resumed>) = 0 [pid 5314] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5311] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5314] <... prctl resumed>) = 0 [pid 5314] setpgid(0, 0 [pid 5311] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5314] <... setpgid resumed>) = 0 [pid 5314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5312] munmap(0x7f138d200000, 138412032 [pid 5314] <... openat resumed>) = 3 [pid 5312] <... munmap resumed>) = 0 [pid 5314] write(3, "1000", 4 [pid 5311] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5312] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5314] <... write resumed>) = 4 [ 78.348248][ T5311] loop3: detected capacity change from 0 to 1024 [pid 5314] close(3 [pid 5313] <... write resumed>) = 524288 [pid 5312] <... openat resumed>) = 4 [pid 5311] <... symlink resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5312] ioctl(4, LOOP_SET_FD, 3 [pid 5060] close(3 [pid 5314] <... close resumed>) = 0 [pid 5312] <... ioctl resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5314] symlink("/dev/binderfs", "./binderfs" [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... ioctl resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5315 ./strace-static-x86_64: Process 5315 attached [pid 5315] set_robust_list(0x555556c07660, 24 [pid 5314] <... symlink resumed>) = 0 [pid 5315] <... set_robust_list resumed>) = 0 [pid 5314] memfd_create("syzkaller", 0 [pid 5313] munmap(0x7f138d200000, 138412032 [pid 5311] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5315] chdir("./39" [pid 5056] close(3 [pid 5315] <... chdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5314] <... memfd_create resumed>) = 3 [pid 5313] <... munmap resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5315] setpgid(0, 0 [pid 5312] close(3 [pid 5315] <... setpgid resumed>) = 0 [pid 5312] <... close resumed>) = 0 [pid 5315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5315] <... openat resumed>) = 3 [pid 5312] close(4 [pid 5315] write(3, "1000", 4 [pid 5314] <... mmap resumed>) = 0x7f138d200000 [pid 5313] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5311] <... creat resumed>) = 4 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5316 [pid 5313] <... openat resumed>) = 4 ./strace-static-x86_64: Process 5316 attached [pid 5315] <... write resumed>) = 4 [pid 5314] 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"..., 524288 [pid 5313] ioctl(4, LOOP_SET_FD, 3 [pid 5312] <... close resumed>) = 0 [pid 5311] rename("./bus", "./file2" [pid 5316] set_robust_list(0x555556c07660, 24 [pid 5315] close(3 [pid 5312] mkdir("./bus", 0777 [pid 5316] <... set_robust_list resumed>) = 0 [pid 5315] <... close resumed>) = 0 [pid 5312] <... mkdir resumed>) = 0 [pid 5315] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5316] chdir("./40" [pid 5315] memfd_create("syzkaller", 0 [pid 5316] <... chdir resumed>) = 0 [pid 5312] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5316] setpgid(0, 0) = 0 [pid 5316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5316] write(3, "1000", 4) = 4 [pid 5316] close(3 [pid 5315] <... memfd_create resumed>) = 3 [pid 5315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5316] <... close resumed>) = 0 [pid 5316] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5316] memfd_create("syzkaller", 0 [pid 5315] 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"..., 524288 [pid 5316] <... memfd_create resumed>) = 3 [pid 5316] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5316] 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"..., 524288 [pid 5311] <... rename resumed>) = -1 EEXIST (File exists) [pid 5315] <... write resumed>) = 524288 [pid 5314] <... write resumed>) = 524288 [pid 5311] memfd_create("syzkaller", 0) = 5 [pid 5315] munmap(0x7f138d200000, 138412032 [pid 5311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5311] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5312] <... mount resumed>) = 0 [pid 5312] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5312] chdir("./bus") = 0 [pid 5314] munmap(0x7f138d200000, 138412032 [pid 5313] <... ioctl resumed>) = 0 [pid 5312] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5311] <... write resumed>) = 524288 [pid 5312] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 78.418665][ T5312] loop2: detected capacity change from 0 to 1024 [ 78.453125][ T5313] loop1: detected capacity change from 0 to 1024 [pid 5312] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5314] <... munmap resumed>) = 0 [pid 5313] close(3 [pid 5314] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5313] <... close resumed>) = 0 [pid 5314] <... openat resumed>) = 4 [pid 5313] close(4 [pid 5312] <... symlink resumed>) = 0 [pid 5314] ioctl(4, LOOP_SET_FD, 3 [pid 5312] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5313] <... close resumed>) = 0 [pid 5316] <... write resumed>) = 524288 [pid 5315] <... munmap resumed>) = 0 [pid 5315] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5312] <... creat resumed>) = 4 [pid 5315] <... openat resumed>) = 4 [pid 5312] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5312] memfd_create("syzkaller", 0 [pid 5315] ioctl(4, LOOP_SET_FD, 3 [pid 5312] <... memfd_create resumed>) = 5 [pid 5314] <... ioctl resumed>) = 0 [pid 5313] mkdir("./bus", 0777 [pid 5312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5311] munmap(0x7f138d200000, 138412032 [pid 5314] close(3 [pid 5313] <... mkdir resumed>) = 0 [pid 5311] <... munmap resumed>) = 0 [pid 5314] <... close resumed>) = 0 [pid 5313] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5311] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5316] munmap(0x7f138d200000, 138412032 [pid 5312] <... mmap resumed>) = 0x7f138d200000 [pid 5316] <... munmap resumed>) = 0 [pid 5314] close(4 [pid 5313] <... mount resumed>) = 0 [pid 5312] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5311] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5314] <... close resumed>) = 0 [pid 5313] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5311] close(5 [pid 5313] <... openat resumed>) = 3 [pid 5313] chdir("./bus") = 0 [pid 5312] <... write resumed>) = 524288 [pid 5311] <... close resumed>) = 0 [pid 5313] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5314] mkdir("./bus", 0777 [pid 5313] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5316] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5316] ioctl(4, LOOP_SET_FD, 3 [pid 5314] <... mkdir resumed>) = 0 [pid 5313] <... symlink resumed>) = 0 [pid 5315] <... ioctl resumed>) = 0 [pid 5312] munmap(0x7f138d200000, 138412032 [pid 5315] close(3 [pid 5312] <... munmap resumed>) = 0 [pid 5315] <... close resumed>) = 0 [pid 5312] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5315] close(4 [pid 5312] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5315] <... close resumed>) = 0 [pid 5312] close(5 [pid 5315] mkdir("./bus", 0777 [pid 5312] <... close resumed>) = 0 [pid 5315] <... mkdir resumed>) = 0 [pid 5315] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5312] creat("./file1", 000 [pid 5313] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5314] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5313] <... creat resumed>) = 4 [pid 5311] creat("./file1", 000 [pid 5316] <... ioctl resumed>) = 0 [pid 5316] close(3) = 0 [pid 5316] close(4) = 0 [pid 5316] mkdir("./bus", 0777) = 0 [pid 5315] <... mount resumed>) = 0 [pid 5314] <... mount resumed>) = 0 [pid 5313] rename("./bus", "./file2" [pid 5312] <... creat resumed>) = 5 [pid 5311] <... creat resumed>) = 5 [pid 5316] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5315] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5312] exit_group(0 [pid 5311] exit_group(0 [pid 5315] <... openat resumed>) = 3 [pid 5314] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5313] <... rename resumed>) = -1 EEXIST (File exists) [pid 5312] <... exit_group resumed>) = ? [pid 5311] <... exit_group resumed>) = ? [pid 5315] chdir("./bus" [pid 5314] <... openat resumed>) = 3 [pid 5313] memfd_create("syzkaller", 0 [pid 5312] +++ exited with 0 +++ [pid 5315] <... chdir resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5312, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5315] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5315] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... restart_syscall resumed>) = 0 [pid 5315] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5314] chdir("./bus" [pid 5313] <... memfd_create resumed>) = 5 [pid 5314] <... chdir resumed>) = 0 [pid 5313] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5314] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5313] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5314] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [ 78.492426][ T5314] loop5: detected capacity change from 0 to 1024 [ 78.494870][ T5315] loop4: detected capacity change from 0 to 1024 [ 78.520916][ T5316] loop0: detected capacity change from 0 to 1024 [pid 5058] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5315] <... symlink resumed>) = 0 [pid 5314] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5313] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5311] +++ exited with 0 +++ [pid 5316] <... mount resumed>) = 0 [pid 5315] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5311, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5316] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5316] chdir("./bus" [pid 5059] umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5316] <... chdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5316] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5315] <... creat resumed>) = 4 [pid 5314] <... symlink resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... umount2 resumed>) = 0 [pid 5316] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5315] rename("./bus", "./file2" [pid 5059] <... openat resumed>) = 3 [pid 5316] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5315] <... rename resumed>) = -1 EEXIST (File exists) [pid 5314] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] newfstatat(3, "", [pid 5058] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5316] <... symlink resumed>) = 0 [pid 5315] memfd_create("syzkaller", 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5316] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5315] <... memfd_create resumed>) = 5 [pid 5314] <... creat resumed>) = 4 [pid 5059] getdents64(3, [pid 5315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5314] rename("./bus", "./file2" [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5315] <... mmap resumed>) = 0x7f138d200000 [pid 5313] <... write resumed>) = 524288 [pid 5315] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5314] <... rename resumed>) = -1 EEXIST (File exists) [pid 5313] munmap(0x7f138d200000, 138412032 [pid 5059] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./40/bus", [pid 5314] memfd_create("syzkaller", 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5313] <... munmap resumed>) = 0 [pid 5058] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5314] <... memfd_create resumed>) = 5 [pid 5313] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5313] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5314] <... mmap resumed>) = 0x7f138d200000 [pid 5058] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5313] close(5 [pid 5316] <... creat resumed>) = 4 [pid 5058] <... openat resumed>) = 4 [pid 5316] rename("./bus", "./file2" [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5316] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5316] memfd_create("syzkaller", 0 [pid 5058] getdents64(4, [pid 5316] <... memfd_create resumed>) = 5 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5316] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] close(4 [pid 5316] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... close resumed>) = 0 [pid 5316] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5314] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] rmdir("./40/bus" [pid 5313] <... close resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5058] umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5313] creat("./file1", 000 [pid 5058] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5315] <... write resumed>) = 524288 [pid 5314] <... write resumed>) = 524288 [pid 5058] unlink("./40/binderfs" [pid 5313] <... creat resumed>) = 5 [pid 5058] <... unlink resumed>) = 0 [pid 5314] munmap(0x7f138d200000, 138412032 [pid 5313] exit_group(0 [pid 5316] <... write resumed>) = 524288 [pid 5315] munmap(0x7f138d200000, 138412032 [pid 5313] <... exit_group resumed>) = ? [pid 5059] <... umount2 resumed>) = 0 [pid 5058] getdents64(3, [pid 5315] <... munmap resumed>) = 0 [pid 5059] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5315] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] close(3 [pid 5059] newfstatat(AT_FDCWD, "./41/bus", [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./40" [pid 5315] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5315] close(5 [pid 5313] +++ exited with 0 +++ [pid 5316] munmap(0x7f138d200000, 138412032 [pid 5314] <... munmap resumed>) = 0 [pid 5059] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] mkdir("./41", 0777 [pid 5316] <... munmap resumed>) = 0 [pid 5314] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5314] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... mkdir resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5313, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5316] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5315] <... close resumed>) = 0 [pid 5314] close(5 [pid 5059] <... openat resumed>) = 4 [pid 5315] creat("./file1", 000 [pid 5057] umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] newfstatat(4, "", [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5315] <... creat resumed>) = 5 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5315] exit_group(0 [pid 5057] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] close(4 [pid 5058] <... openat resumed>) = 3 [pid 5059] <... close resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... openat resumed>) = 3 [pid 5315] <... exit_group resumed>) = ? [pid 5059] rmdir("./41/bus" [pid 5057] newfstatat(3, "", [pid 5059] <... rmdir resumed>) = 0 [pid 5314] <... close resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, [pid 5059] umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5316] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./41/binderfs" [pid 5314] creat("./file1", 000 [pid 5059] <... unlink resumed>) = 0 [pid 5316] close(5 [pid 5315] +++ exited with 0 +++ [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] getdents64(3, [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5315, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5060] umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3 [pid 5314] <... creat resumed>) = 5 [pid 5314] exit_group(0) = ? [pid 5316] <... close resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5316] creat("./file1", 000 [pid 5060] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] rmdir("./41" [pid 5057] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5316] <... creat resumed>) = 5 [pid 5314] +++ exited with 0 +++ [pid 5060] newfstatat(3, "", [pid 5059] mkdir("./42", 0777 [pid 5057] newfstatat(AT_FDCWD, "./41/bus", [pid 5316] exit_group(0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5316] <... exit_group resumed>) = ? [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5314, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5060] getdents64(3, [pid 5059] <... mkdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... restart_syscall resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5316] +++ exited with 0 +++ [pid 5060] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5316, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5057] <... openat resumed>) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5057] rmdir("./41/bus" [pid 5056] umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./39/bus", [pid 5061] newfstatat(AT_FDCWD, "./42/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5060] umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] close(3 [pid 5057] umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] newfstatat(4, "", [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 3 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, [pid 5057] newfstatat(AT_FDCWD, "./41/binderfs", [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] newfstatat(3, "", [pid 5061] getdents64(4, ./strace-static-x86_64: Process 5317 attached [pid 5060] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... ioctl resumed>) = 0 [pid 5057] unlink("./41/binderfs" [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5317] set_robust_list(0x555556c07660, 24 [pid 5060] <... openat resumed>) = 4 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./42/bus") = 0 [pid 5061] umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./42/binderfs") = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5061] rmdir("./42") = 0 [pid 5061] mkdir("./43", 0777 [pid 5317] <... set_robust_list resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] newfstatat(4, "", [pid 5059] close(3 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5317 [pid 5057] <... unlink resumed>) = 0 [pid 5056] getdents64(3, [pid 5317] chdir("./41" [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5317] <... chdir resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5317] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5317] <... prctl resumed>) = 0 [pid 5060] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5317] setpgid(0, 0) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] close(3./strace-static-x86_64: Process 5318 attached [pid 5317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] getdents64(4, [pid 5057] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5318] set_robust_list(0x555556c07660, 24) = 0 [pid 5317] <... openat resumed>) = 3 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5318 [pid 5057] rmdir("./41" [pid 5056] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5317] write(3, "1000", 4 [pid 5318] chdir("./42") = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5060] close(4 [pid 5317] <... write resumed>) = 4 [pid 5318] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5317] close(3 [pid 5060] <... close resumed>) = 0 [pid 5057] mkdir("./42", 0777 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5318] <... prctl resumed>) = 0 [pid 5317] <... close resumed>) = 0 [pid 5060] rmdir("./39/bus" [pid 5318] setpgid(0, 0) = 0 [pid 5317] symlink("/dev/binderfs", "./binderfs" [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./40/bus", [pid 5318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5317] <... symlink resumed>) = 0 [pid 5318] <... openat resumed>) = 3 [pid 5317] memfd_create("syzkaller", 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5317] <... memfd_create resumed>) = 3 [pid 5318] write(3, "1000", 4 [pid 5317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5318] <... write resumed>) = 4 [pid 5318] close(3) = 0 [pid 5318] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5317] <... mmap resumed>) = 0x7f138d200000 [pid 5060] newfstatat(AT_FDCWD, "./39/binderfs", [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5318] memfd_create("syzkaller", 0 [pid 5317] 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"..., 524288 [pid 5060] unlink("./39/binderfs" [pid 5056] <... openat resumed>) = 4 [pid 5318] <... memfd_create resumed>) = 3 [pid 5056] newfstatat(4, "", [pid 5318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5056] getdents64(4, [pid 5318] 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"..., 524288 [pid 5060] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5317] <... write resumed>) = 524288 [pid 5061] <... ioctl resumed>) = 0 [pid 5061] close(3) = 0 [pid 5318] <... write resumed>) = 524288 [pid 5317] munmap(0x7f138d200000, 138412032 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(4, [pid 5060] close(3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... close resumed>) = 0 [pid 5056] close(4 [pid 5060] rmdir("./39" [pid 5056] <... close resumed>) = 0 [pid 5317] <... munmap resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] rmdir("./40/bus" [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5319 attached [pid 5319] set_robust_list(0x555556c07660, 24 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5319 [pid 5319] <... set_robust_list resumed>) = 0 [pid 5060] mkdir("./40", 0777 [pid 5056] umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5319] chdir("./43") = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5319] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5056] newfstatat(AT_FDCWD, "./40/binderfs", [pid 5319] setpgid(0, 0 [pid 5317] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5319] <... setpgid resumed>) = 0 [pid 5318] munmap(0x7f138d200000, 138412032 [pid 5317] <... openat resumed>) = 4 [pid 5060] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5318] <... munmap resumed>) = 0 [pid 5056] unlink("./40/binderfs" [pid 5319] <... openat resumed>) = 3 [pid 5317] ioctl(4, LOOP_SET_FD, 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] <... unlink resumed>) = 0 [pid 5319] write(3, "1000", 4) = 4 [pid 5318] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] <... ioctl resumed>) = 0 [pid 5056] getdents64(3, [pid 5318] <... openat resumed>) = 4 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5318] ioctl(4, LOOP_SET_FD, 3 [pid 5056] close(3 [pid 5319] close(3 [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./40" [pid 5319] <... close resumed>) = 0 [pid 5319] symlink("/dev/binderfs", "./binderfs" [pid 5057] close(3 [pid 5056] <... rmdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] mkdir("./41", 0777 [pid 5319] <... symlink resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... mkdir resumed>) = 0 [pid 5319] memfd_create("syzkaller", 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5319] <... memfd_create resumed>) = 3 [pid 5319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5320 attached [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5320] set_robust_list(0x555556c07660, 24 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5320 [pid 5320] <... set_robust_list resumed>) = 0 [pid 5320] chdir("./42") = 0 [pid 5320] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5319] <... mmap resumed>) = 0x7f138d200000 [pid 5320] <... prctl resumed>) = 0 [pid 5320] setpgid(0, 0) = 0 [pid 5320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5320] write(3, "1000", 4) = 4 [pid 5320] close(3 [pid 5317] <... ioctl resumed>) = 0 [pid 5317] close(3 [pid 5320] <... close resumed>) = 0 [pid 5320] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5317] <... close resumed>) = 0 [pid 5317] close(4 [pid 5320] memfd_create("syzkaller", 0 [pid 5317] <... close resumed>) = 0 [pid 5320] <... memfd_create resumed>) = 3 [pid 5320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5320] 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"..., 524288 [pid 5318] <... ioctl resumed>) = 0 [pid 5317] mkdir("./bus", 0777 [pid 5319] 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"..., 524288 [pid 5318] close(3) = 0 [pid 5318] close(4) = 0 [pid 5318] mkdir("./bus", 0777) = 0 [pid 5317] <... mkdir resumed>) = 0 [pid 5318] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5317] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5320] <... write resumed>) = 524288 [pid 5319] <... write resumed>) = 524288 [pid 5318] <... mount resumed>) = 0 [pid 5317] <... mount resumed>) = 0 [pid 5317] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5319] munmap(0x7f138d200000, 138412032 [pid 5318] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5317] <... openat resumed>) = 3 [pid 5317] chdir("./bus" [pid 5320] munmap(0x7f138d200000, 138412032 [pid 5319] <... munmap resumed>) = 0 [pid 5318] <... openat resumed>) = 3 [pid 5317] <... chdir resumed>) = 0 [pid 5320] <... munmap resumed>) = 0 [pid 5317] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... ioctl resumed>) = 0 [pid 5320] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5319] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5318] chdir("./bus" [pid 5317] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5318] <... chdir resumed>) = 0 [pid 5320] <... openat resumed>) = 4 [pid 5319] <... openat resumed>) = 4 [pid 5318] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5317] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5318] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 78.809048][ T5317] loop2: detected capacity change from 0 to 1024 [ 78.818806][ T5318] loop3: detected capacity change from 0 to 1024 [pid 5320] ioctl(4, LOOP_SET_FD, 3 [pid 5319] ioctl(4, LOOP_SET_FD, 3 [pid 5318] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] close(3) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556c07650) = 5321 ./strace-static-x86_64: Process 5321 attached [pid 5319] <... ioctl resumed>) = 0 [pid 5318] <... symlink resumed>) = 0 [pid 5317] <... symlink resumed>) = 0 [pid 5317] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5321] set_robust_list(0x555556c07660, 24) = 0 [pid 5319] close(3 [pid 5318] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5321] chdir("./40") = 0 [pid 5320] <... ioctl resumed>) = 0 [pid 5319] <... close resumed>) = 0 [pid 5321] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5319] close(4 [pid 5321] <... prctl resumed>) = 0 [pid 5319] <... close resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5321] setpgid(0, 0 [pid 5320] close(3 [pid 5319] mkdir("./bus", 0777 [pid 5317] <... creat resumed>) = 4 ./strace-static-x86_64: Process 5322 attached [pid 5319] <... mkdir resumed>) = 0 [pid 5317] rename("./bus", "./file2" [pid 5322] set_robust_list(0x555556c07660, 24 [pid 5321] <... setpgid resumed>) = 0 [pid 5320] <... close resumed>) = 0 [pid 5318] <... creat resumed>) = 4 [pid 5322] <... set_robust_list resumed>) = 0 [pid 5322] chdir("./41" [pid 5321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5320] close(4 [pid 5322] <... chdir resumed>) = 0 [pid 5318] rename("./bus", "./file2" [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5322 [pid 5322] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5320] <... close resumed>) = 0 [pid 5322] <... prctl resumed>) = 0 [pid 5322] setpgid(0, 0 [pid 5321] <... openat resumed>) = 3 [pid 5322] <... setpgid resumed>) = 0 [pid 5320] mkdir("./bus", 0777 [pid 5319] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5318] <... rename resumed>) = -1 EEXIST (File exists) [pid 5317] <... rename resumed>) = -1 EEXIST (File exists) [pid 5322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5321] write(3, "1000", 4 [pid 5320] <... mkdir resumed>) = 0 [pid 5318] memfd_create("syzkaller", 0 [pid 5317] memfd_create("syzkaller", 0 [pid 5321] <... write resumed>) = 4 [pid 5318] <... memfd_create resumed>) = 5 [pid 5317] <... memfd_create resumed>) = 5 [pid 5321] close(3 [pid 5318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5321] <... close resumed>) = 0 [pid 5321] symlink("/dev/binderfs", "./binderfs" [pid 5318] <... mmap resumed>) = 0x7f138d200000 [pid 5317] <... mmap resumed>) = 0x7f138d200000 [pid 5320] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5321] <... symlink resumed>) = 0 [pid 5322] write(3, "1000", 4) = 4 [pid 5322] close(3) = 0 [pid 5322] symlink("/dev/binderfs", "./binderfs" [pid 5317] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5321] memfd_create("syzkaller", 0 [pid 5322] <... symlink resumed>) = 0 [pid 5322] memfd_create("syzkaller", 0 [pid 5318] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5322] <... memfd_create resumed>) = 3 [pid 5322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [ 78.867304][ T5320] loop1: detected capacity change from 0 to 1024 [ 78.876451][ T5319] loop5: detected capacity change from 0 to 1024 [pid 5321] <... memfd_create resumed>) = 3 [pid 5321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5318] <... write resumed>) = 524288 [pid 5322] 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"..., 524288 [pid 5321] 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"..., 524288 [pid 5320] <... mount resumed>) = 0 [pid 5319] <... mount resumed>) = 0 [pid 5317] <... write resumed>) = 524288 [pid 5320] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5319] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5321] <... write resumed>) = 524288 [pid 5320] <... openat resumed>) = 3 [pid 5319] <... openat resumed>) = 3 [pid 5320] chdir("./bus" [pid 5319] chdir("./bus" [pid 5318] munmap(0x7f138d200000, 138412032 [pid 5317] munmap(0x7f138d200000, 138412032 [pid 5318] <... munmap resumed>) = 0 [pid 5317] <... munmap resumed>) = 0 [pid 5318] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5320] <... chdir resumed>) = 0 [pid 5322] <... write resumed>) = 524288 [pid 5321] munmap(0x7f138d200000, 138412032 [pid 5320] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5319] <... chdir resumed>) = 0 [pid 5318] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5317] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5319] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5317] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5320] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5317] close(5 [pid 5319] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5320] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5319] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5318] close(5 [pid 5317] <... close resumed>) = 0 [pid 5322] munmap(0x7f138d200000, 138412032 [pid 5321] <... munmap resumed>) = 0 [pid 5320] <... symlink resumed>) = 0 [pid 5319] <... symlink resumed>) = 0 [pid 5318] <... close resumed>) = 0 [pid 5317] creat("./file1", 000 [pid 5322] <... munmap resumed>) = 0 [pid 5321] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5320] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5319] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5322] ioctl(4, LOOP_SET_FD, 3 [pid 5321] <... openat resumed>) = 4 [pid 5318] creat("./file1", 000 [pid 5317] <... creat resumed>) = 5 [pid 5321] ioctl(4, LOOP_SET_FD, 3 [pid 5319] <... creat resumed>) = 4 [pid 5322] <... ioctl resumed>) = 0 [pid 5321] <... ioctl resumed>) = 0 [pid 5320] <... creat resumed>) = 4 [pid 5319] rename("./bus", "./file2" [pid 5318] <... creat resumed>) = 5 [pid 5317] exit_group(0 [pid 5322] close(3 [pid 5321] close(3 [pid 5320] rename("./bus", "./file2" [pid 5319] <... rename resumed>) = -1 EEXIST (File exists) [pid 5318] exit_group(0 [pid 5317] <... exit_group resumed>) = ? [pid 5322] <... close resumed>) = 0 [pid 5321] <... close resumed>) = 0 [pid 5319] memfd_create("syzkaller", 0 [pid 5318] <... exit_group resumed>) = ? [pid 5322] close(4 [pid 5321] close(4 [pid 5320] <... rename resumed>) = -1 EEXIST (File exists) [pid 5319] <... memfd_create resumed>) = 5 [pid 5318] +++ exited with 0 +++ [pid 5317] +++ exited with 0 +++ [pid 5322] <... close resumed>) = 0 [pid 5319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5322] mkdir("./bus", 0777 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5318, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5317, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5319] <... mmap resumed>) = 0x7f138d200000 [pid 5322] <... mkdir resumed>) = 0 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5059] <... restart_syscall resumed>) = 0 [pid 5058] <... restart_syscall resumed>) = 0 [pid 5059] umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5319] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... openat resumed>) = 3 [pid 5058] <... openat resumed>) = 3 [pid 5321] <... close resumed>) = 0 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5320] memfd_create("syzkaller", 0 [pid 5059] getdents64(3, [pid 5321] mkdir("./bus", 0777 [pid 5320] <... memfd_create resumed>) = 5 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5322] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5321] <... mkdir resumed>) = 0 [pid 5320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5319] <... write resumed>) = 524288 [pid 5059] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5321] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5320] <... mmap resumed>) = 0x7f138d200000 [pid 5058] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5321] <... mount resumed>) = 0 [pid 5321] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5320] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... umount2 resumed>) = 0 [pid 5321] <... openat resumed>) = 3 [pid 5058] <... umount2 resumed>) = 0 [pid 5321] chdir("./bus") = 0 [pid 5321] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5321] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5059] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5321] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5322] <... mount resumed>) = 0 [pid 5319] munmap(0x7f138d200000, 138412032 [pid 5059] newfstatat(AT_FDCWD, "./42/bus", [pid 5058] newfstatat(AT_FDCWD, "./41/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5321] <... creat resumed>) = 4 [pid 5059] <... openat resumed>) = 4 [ 78.985242][ T5322] loop0: detected capacity change from 0 to 1024 [ 78.993181][ T5321] loop4: detected capacity change from 0 to 1024 [pid 5058] <... openat resumed>) = 4 [pid 5322] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5321] rename("./bus", "./file2" [pid 5319] <... munmap resumed>) = 0 [pid 5059] newfstatat(4, "", [pid 5322] <... openat resumed>) = 3 [pid 5058] newfstatat(4, "", [pid 5322] chdir("./bus" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5322] <... chdir resumed>) = 0 [pid 5319] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5322] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] getdents64(4, [pid 5319] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] getdents64(4, [pid 5322] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5319] close(5 [pid 5058] getdents64(4, [pid 5321] <... rename resumed>) = -1 EEXIST (File exists) [pid 5321] memfd_create("syzkaller", 0) = 5 [pid 5321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5321] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5319] <... close resumed>) = 0 [pid 5059] getdents64(4, [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5322] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5320] <... write resumed>) = 524288 [pid 5320] munmap(0x7f138d200000, 138412032 [pid 5058] close(4) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./42/bus" [pid 5058] rmdir("./41/bus" [pid 5320] <... munmap resumed>) = 0 [pid 5320] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5320] close(5 [pid 5058] <... rmdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5322] <... symlink resumed>) = 0 [pid 5059] umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5322] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 4 [pid 5059] newfstatat(AT_FDCWD, "./42/binderfs", [pid 5058] newfstatat(AT_FDCWD, "./41/binderfs", [pid 5322] rename("./bus", "./file2" [pid 5319] creat("./file1", 000 [pid 5322] <... rename resumed>) = -1 EEXIST (File exists) [pid 5321] <... write resumed>) = 524288 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5322] memfd_create("syzkaller", 0 [pid 5320] <... close resumed>) = 0 [pid 5319] <... creat resumed>) = 5 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./41/binderfs" [pid 5322] <... memfd_create resumed>) = 5 [pid 5319] exit_group(0 [pid 5059] unlink("./42/binderfs" [pid 5058] <... unlink resumed>) = 0 [pid 5319] <... exit_group resumed>) = ? [pid 5320] creat("./file1", 000 [pid 5059] <... unlink resumed>) = 0 [pid 5321] munmap(0x7f138d200000, 138412032) = 0 [pid 5321] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5319] +++ exited with 0 +++ [pid 5059] getdents64(3, [pid 5058] getdents64(3, [pid 5322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5321] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5321] close(5 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5319, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5059] close(3 [pid 5322] <... mmap resumed>) = 0x7f138d200000 [pid 5058] close(3 [pid 5321] <... close resumed>) = 0 [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5059] <... close resumed>) = 0 [pid 5061] <... restart_syscall resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./41" [pid 5059] rmdir("./42" [pid 5061] umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5320] <... creat resumed>) = 5 [pid 5061] <... openat resumed>) = 3 [pid 5320] exit_group(0 [pid 5061] newfstatat(3, "", [pid 5320] <... exit_group resumed>) = ? [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5322] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5320] +++ exited with 0 +++ [pid 5061] getdents64(3, [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] mkdir("./43", 0777 [pid 5058] mkdir("./42", 0777 [pid 5061] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5320, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5321] creat("./file1", 000 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5322] <... write resumed>) = 524288 [pid 5321] <... creat resumed>) = 5 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... openat resumed>) = 3 [pid 5057] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5321] exit_group(0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... openat resumed>) = 3 [pid 5321] <... exit_group resumed>) = ? [pid 5057] newfstatat(3, "", [pid 5321] +++ exited with 0 +++ [pid 5061] <... umount2 resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5321, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5060] umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", [pid 5057] getdents64(3, [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] getdents64(3, [pid 5057] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5322] munmap(0x7f138d200000, 138412032 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5322] <... munmap resumed>) = 0 [pid 5060] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5322] close(5 [pid 5061] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5322] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = 0 [pid 5322] creat("./file1", 000 [pid 5061] newfstatat(AT_FDCWD, "./43/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5322] <... creat resumed>) = 5 [pid 5060] <... umount2 resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5322] exit_group(0 [pid 5061] <... openat resumed>) = 4 [pid 5061] newfstatat(4, "", [pid 5322] <... exit_group resumed>) = ? [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] getdents64(4, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] newfstatat(AT_FDCWD, "./42/bus", [pid 5061] getdents64(4, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] close(4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... close resumed>) = 0 [pid 5060] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] rmdir("./43/bus" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... openat resumed>) = 4 [pid 5322] +++ exited with 0 +++ [pid 5061] <... rmdir resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./40/bus", [pid 5061] umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(4, "", [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5322, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] newfstatat(AT_FDCWD, "./43/binderfs", [pid 5057] getdents64(4, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 4 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] newfstatat(4, "", [pid 5056] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] unlink("./43/binderfs" [pid 5057] getdents64(4, [pid 5056] <... openat resumed>) = 3 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5060] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(3, "", [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] close(4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] close(3 [pid 5060] getdents64(4, [pid 5061] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] getdents64(3, [pid 5061] rmdir("./43" [pid 5060] close(4 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5057] rmdir("./42/bus" [pid 5056] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] rmdir("./40/bus" [pid 5057] <... rmdir resumed>) = 0 [pid 5061] mkdir("./44", 0777 [pid 5060] <... rmdir resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] newfstatat(AT_FDCWD, "./40/binderfs", [pid 5057] newfstatat(AT_FDCWD, "./42/binderfs", [pid 5056] <... umount2 resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./41/bus", [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./42/binderfs" [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] unlink("./40/binderfs" [pid 5057] <... unlink resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5056] newfstatat(4, "", [pid 5060] <... unlink resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5057] getdents64(3, [pid 5060] getdents64(3, [pid 5058] <... ioctl resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(4, [pid 5060] close(3 [pid 5057] close(3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] getdents64(4, [pid 5060] rmdir("./40" [pid 5057] rmdir("./42" [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] close(4 [pid 5060] mkdir("./41", 0777 [pid 5057] mkdir("./43", 0777 [pid 5056] <... close resumed>) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] rmdir("./41/bus" [pid 5059] close(3 [pid 5056] <... rmdir resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5056] umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 3 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] newfstatat(AT_FDCWD, "./41/binderfs", ./strace-static-x86_64: Process 5323 attached [pid 5058] close(3 [pid 5323] set_robust_list(0x555556c07660, 24 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5323] <... set_robust_list resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5323] chdir("./43" [pid 5056] unlink("./41/binderfs") = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5323 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./41"./strace-static-x86_64: Process 5324 attached [pid 5323] <... chdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5324 [pid 5323] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5324] set_robust_list(0x555556c07660, 24 [pid 5323] <... prctl resumed>) = 0 [pid 5323] setpgid(0, 0 [pid 5324] <... set_robust_list resumed>) = 0 [pid 5323] <... setpgid resumed>) = 0 [pid 5324] chdir("./42" [pid 5056] mkdir("./42", 0777 [pid 5324] <... chdir resumed>) = 0 [pid 5323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5056] <... mkdir resumed>) = 0 [pid 5324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5323] <... openat resumed>) = 3 [pid 5324] setpgid(0, 0 [pid 5323] write(3, "1000", 4 [pid 5324] <... setpgid resumed>) = 0 [pid 5323] <... write resumed>) = 4 [pid 5056] <... openat resumed>) = 3 [pid 5324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5323] close(3) = 0 [pid 5323] symlink("/dev/binderfs", "./binderfs" [pid 5324] <... openat resumed>) = 3 [pid 5061] <... ioctl resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5323] <... symlink resumed>) = 0 [pid 5324] write(3, "1000", 4 [pid 5323] memfd_create("syzkaller", 0 [pid 5061] close(3 [pid 5324] <... write resumed>) = 4 [pid 5323] <... memfd_create resumed>) = 3 [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5324] close(3 [pid 5323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5325 attached [pid 5324] <... close resumed>) = 0 [pid 5323] <... mmap resumed>) = 0x7f138d200000 [pid 5325] set_robust_list(0x555556c07660, 24 [pid 5324] symlink("/dev/binderfs", "./binderfs" [pid 5323] 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"..., 524288 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5325 [pid 5325] <... set_robust_list resumed>) = 0 [pid 5324] <... symlink resumed>) = 0 [pid 5325] chdir("./44" [pid 5324] memfd_create("syzkaller", 0 [pid 5325] <... chdir resumed>) = 0 [pid 5324] <... memfd_create resumed>) = 3 [pid 5325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5324] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5325] setpgid(0, 0 [pid 5324] <... mmap resumed>) = 0x7f138d200000 [pid 5324] 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"..., 524288 [pid 5060] <... ioctl resumed>) = 0 [pid 5325] <... setpgid resumed>) = 0 [pid 5325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5060] close(3 [pid 5057] <... ioctl resumed>) = 0 [pid 5057] close(3 [pid 5325] write(3, "1000", 4 [pid 5060] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5327 attached ./strace-static-x86_64: Process 5326 attached [pid 5325] <... write resumed>) = 4 [pid 5323] <... write resumed>) = 524288 [pid 5327] set_robust_list(0x555556c07660, 24 [pid 5326] set_robust_list(0x555556c07660, 24 [pid 5325] close(3 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5327 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5326 [pid 5327] <... set_robust_list resumed>) = 0 [pid 5326] <... set_robust_list resumed>) = 0 [pid 5326] chdir("./43" [pid 5325] <... close resumed>) = 0 [pid 5327] chdir("./41" [pid 5326] <... chdir resumed>) = 0 [pid 5325] symlink("/dev/binderfs", "./binderfs" [pid 5327] <... chdir resumed>) = 0 [pid 5326] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5325] <... symlink resumed>) = 0 [pid 5327] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5326] <... prctl resumed>) = 0 [pid 5325] memfd_create("syzkaller", 0 [pid 5327] <... prctl resumed>) = 0 [pid 5326] setpgid(0, 0 [pid 5325] <... memfd_create resumed>) = 3 [pid 5324] <... write resumed>) = 524288 [pid 5325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5323] munmap(0x7f138d200000, 138412032 [pid 5326] <... setpgid resumed>) = 0 [pid 5327] setpgid(0, 0 [pid 5326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5325] 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"..., 524288 [pid 5324] munmap(0x7f138d200000, 138412032 [pid 5323] <... munmap resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5327] <... setpgid resumed>) = 0 [pid 5326] <... openat resumed>) = 3 [pid 5056] close(3 [pid 5327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5326] write(3, "1000", 4 [pid 5323] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] <... close resumed>) = 0 [pid 5327] <... openat resumed>) = 3 [pid 5326] <... write resumed>) = 4 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5328 attached [pid 5327] write(3, "1000", 4 [pid 5326] close(3 [pid 5324] <... munmap resumed>) = 0 [pid 5323] <... openat resumed>) = 4 [pid 5328] set_robust_list(0x555556c07660, 24 [pid 5327] <... write resumed>) = 4 [pid 5326] <... close resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5328 [pid 5328] <... set_robust_list resumed>) = 0 [pid 5327] close(3 [pid 5326] symlink("/dev/binderfs", "./binderfs" [pid 5323] ioctl(4, LOOP_SET_FD, 3 [pid 5328] chdir("./42" [pid 5327] <... close resumed>) = 0 [pid 5326] <... symlink resumed>) = 0 [pid 5328] <... chdir resumed>) = 0 [pid 5327] symlink("/dev/binderfs", "./binderfs" [pid 5326] memfd_create("syzkaller", 0 [pid 5328] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5326] <... memfd_create resumed>) = 3 [pid 5328] <... prctl resumed>) = 0 [pid 5326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5328] setpgid(0, 0 [pid 5327] <... symlink resumed>) = 0 [pid 5326] <... mmap resumed>) = 0x7f138d200000 [pid 5328] <... setpgid resumed>) = 0 [pid 5327] memfd_create("syzkaller", 0 [pid 5326] 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"..., 524288 [pid 5328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5328] write(3, "1000", 4) = 4 [pid 5328] close(3) = 0 [pid 5328] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5328] memfd_create("syzkaller", 0 [pid 5327] <... memfd_create resumed>) = 3 [pid 5328] <... memfd_create resumed>) = 3 [pid 5327] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5328] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5327] 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"..., 524288 [pid 5325] <... write resumed>) = 524288 [pid 5324] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5325] munmap(0x7f138d200000, 138412032 [pid 5324] <... openat resumed>) = 4 [pid 5323] <... ioctl resumed>) = 0 [pid 5324] ioctl(4, LOOP_SET_FD, 3 [pid 5328] 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"..., 524288 [pid 5327] <... write resumed>) = 524288 [pid 5328] <... write resumed>) = 524288 [pid 5323] close(3 [pid 5325] <... munmap resumed>) = 0 [pid 5323] <... close resumed>) = 0 [pid 5326] <... write resumed>) = 524288 [pid 5325] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5323] close(4 [pid 5325] <... openat resumed>) = 4 [pid 5323] <... close resumed>) = 0 [pid 5324] <... ioctl resumed>) = 0 [pid 5324] close(3 [pid 5323] mkdir("./bus", 0777 [pid 5324] <... close resumed>) = 0 [pid 5324] close(4 [pid 5326] munmap(0x7f138d200000, 138412032) = 0 [pid 5324] <... close resumed>) = 0 [pid 5327] munmap(0x7f138d200000, 138412032 [pid 5324] mkdir("./bus", 0777 [pid 5328] munmap(0x7f138d200000, 138412032 [pid 5326] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5325] ioctl(4, LOOP_SET_FD, 3 [pid 5323] <... mkdir resumed>) = 0 [ 79.263751][ T5323] loop3: detected capacity change from 0 to 1024 [ 79.283842][ T5324] loop2: detected capacity change from 0 to 1024 [ 79.307070][ T5325] loop5: detected capacity change from 0 to 1024 [pid 5328] <... munmap resumed>) = 0 [pid 5327] <... munmap resumed>) = 0 [pid 5326] <... openat resumed>) = 4 [pid 5325] <... ioctl resumed>) = 0 [pid 5324] <... mkdir resumed>) = 0 [pid 5323] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5328] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5326] ioctl(4, LOOP_SET_FD, 3 [pid 5328] <... openat resumed>) = 4 [pid 5327] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5324] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5323] <... mount resumed>) = 0 [pid 5328] ioctl(4, LOOP_SET_FD, 3 [pid 5327] <... openat resumed>) = 4 [pid 5327] ioctl(4, LOOP_SET_FD, 3 [pid 5324] <... mount resumed>) = 0 [pid 5323] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5324] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5325] close(3 [pid 5324] <... openat resumed>) = 3 [pid 5323] <... openat resumed>) = 3 [pid 5324] chdir("./bus" [pid 5323] chdir("./bus" [pid 5324] <... chdir resumed>) = 0 [pid 5324] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5323] <... chdir resumed>) = 0 [pid 5325] <... close resumed>) = 0 [pid 5324] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5323] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5325] close(4 [pid 5324] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5323] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5323] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5326] <... ioctl resumed>) = 0 [pid 5326] close(3) = 0 [pid 5323] <... symlink resumed>) = 0 [pid 5326] close(4) = 0 [pid 5326] mkdir("./bus", 0777) = 0 [pid 5325] <... close resumed>) = 0 [pid 5324] <... symlink resumed>) = 0 [pid 5323] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5326] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5325] mkdir("./bus", 0777 [pid 5324] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5328] <... ioctl resumed>) = 0 [pid 5325] <... mkdir resumed>) = 0 [pid 5328] close(3 [pid 5327] <... ioctl resumed>) = 0 [pid 5328] <... close resumed>) = 0 [pid 5327] close(3 [pid 5328] close(4 [pid 5327] <... close resumed>) = 0 [pid 5328] <... close resumed>) = 0 [pid 5327] close(4) = 0 [pid 5328] mkdir("./bus", 0777 [pid 5327] mkdir("./bus", 0777 [pid 5328] <... mkdir resumed>) = 0 [pid 5327] <... mkdir resumed>) = 0 [pid 5326] <... mount resumed>) = 0 [pid 5325] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5326] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5326] chdir("./bus") = 0 [pid 5328] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5326] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5327] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5326] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5326] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5324] <... creat resumed>) = 4 [pid 5323] <... creat resumed>) = 4 [pid 5328] <... mount resumed>) = 0 [pid 5327] <... mount resumed>) = 0 [pid 5326] <... symlink resumed>) = 0 [pid 5324] rename("./bus", "./file2" [ 79.315352][ T5326] loop1: detected capacity change from 0 to 1024 [ 79.329118][ T5328] loop0: detected capacity change from 0 to 1024 [ 79.336235][ T5327] loop4: detected capacity change from 0 to 1024 [pid 5323] rename("./bus", "./file2" [pid 5328] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5327] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5326] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5328] <... openat resumed>) = 3 [pid 5327] <... openat resumed>) = 3 [pid 5326] <... creat resumed>) = 4 [pid 5323] <... rename resumed>) = -1 EEXIST (File exists) [pid 5327] chdir("./bus" [pid 5326] rename("./bus", "./file2" [pid 5323] memfd_create("syzkaller", 0 [pid 5327] <... chdir resumed>) = 0 [pid 5326] <... rename resumed>) = -1 EEXIST (File exists) [pid 5328] chdir("./bus") = 0 [pid 5327] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5326] memfd_create("syzkaller", 0 [pid 5328] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5327] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5328] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5326] <... memfd_create resumed>) = 5 [pid 5328] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5328] <... symlink resumed>) = 0 [pid 5326] <... mmap resumed>) = 0x7f138d200000 [pid 5328] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 4 [pid 5327] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5323] <... memfd_create resumed>) = 5 [pid 5328] rename("./bus", "./file2" [pid 5324] <... rename resumed>) = -1 EEXIST (File exists) [pid 5323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5324] memfd_create("syzkaller", 0 [pid 5323] <... mmap resumed>) = 0x7f138d200000 [pid 5324] <... memfd_create resumed>) = 5 [pid 5328] <... rename resumed>) = -1 EEXIST (File exists) [pid 5327] <... symlink resumed>) = 0 [pid 5328] memfd_create("syzkaller", 0 [pid 5327] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5328] <... memfd_create resumed>) = 5 [pid 5323] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5328] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5327] <... creat resumed>) = 4 [pid 5324] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5328] <... mmap resumed>) = 0x7f138d200000 [pid 5327] rename("./bus", "./file2" [pid 5326] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5328] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5327] <... rename resumed>) = -1 EEXIST (File exists) [pid 5325] <... mount resumed>) = 0 [pid 5324] <... mmap resumed>) = 0x7f138d200000 [pid 5326] <... write resumed>) = 524288 [pid 5325] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5324] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5325] <... openat resumed>) = 3 [pid 5325] chdir("./bus" [pid 5327] memfd_create("syzkaller", 0) = 5 [pid 5327] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5327] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5325] <... chdir resumed>) = 0 [pid 5326] munmap(0x7f138d200000, 138412032) = 0 [pid 5326] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5325] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5325] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5326] close(5) = 0 [pid 5328] <... write resumed>) = 524288 [pid 5327] <... write resumed>) = 524288 [pid 5325] <... symlink resumed>) = 0 [pid 5323] <... write resumed>) = 524288 [pid 5328] munmap(0x7f138d200000, 138412032) = 0 [pid 5326] creat("./file1", 000 [pid 5328] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5325] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5328] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5326] <... creat resumed>) = 5 [pid 5323] munmap(0x7f138d200000, 138412032 [pid 5328] close(5) = 0 [pid 5327] munmap(0x7f138d200000, 138412032 [pid 5326] exit_group(0 [pid 5324] <... write resumed>) = 524288 [pid 5323] <... munmap resumed>) = 0 [pid 5327] <... munmap resumed>) = 0 [pid 5323] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5326] <... exit_group resumed>) = ? [pid 5324] munmap(0x7f138d200000, 138412032 [pid 5323] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5323] close(5 [pid 5327] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5326] +++ exited with 0 +++ [pid 5324] <... munmap resumed>) = 0 [pid 5327] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5324] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5326, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5327] close(5 [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5327] <... close resumed>) = 0 [pid 5324] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... restart_syscall resumed>) = 0 [pid 5057] umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5325] <... creat resumed>) = 4 [pid 5057] newfstatat(3, "", [pid 5328] creat("./file1", 000 [pid 5325] rename("./bus", "./file2" [pid 5324] close(5 [pid 5323] <... close resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5327] creat("./file1", 000 [pid 5325] <... rename resumed>) = -1 EEXIST (File exists) [pid 5324] <... close resumed>) = 0 [pid 5323] creat("./file1", 000 [pid 5325] memfd_create("syzkaller", 0 [pid 5324] creat("./file1", 000 [pid 5325] <... memfd_create resumed>) = 5 [pid 5325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5328] <... creat resumed>) = 5 [pid 5328] exit_group(0) = ? [pid 5057] <... umount2 resumed>) = 0 [pid 5323] <... creat resumed>) = 5 [pid 5328] +++ exited with 0 +++ [pid 5325] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5323] exit_group(0) = ? [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5328, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 3 [pid 5057] newfstatat(AT_FDCWD, "./43/bus", [pid 5056] newfstatat(3, "", [pid 5324] <... creat resumed>) = 5 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, [pid 5327] <... creat resumed>) = 5 [pid 5057] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5327] exit_group(0 [pid 5324] exit_group(0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5327] <... exit_group resumed>) = ? [pid 5057] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5324] <... exit_group resumed>) = ? [pid 5323] +++ exited with 0 +++ [pid 5057] <... openat resumed>) = 4 [pid 5324] +++ exited with 0 +++ [pid 5056] <... umount2 resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5323, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5059] umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(4, "", [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5324, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5327] +++ exited with 0 +++ [pid 5059] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(4, [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5327, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5058] newfstatat(3, "", [pid 5059] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(3, "", [pid 5058] getdents64(3, [pid 5060] umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5325] <... write resumed>) = 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(3, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] newfstatat(AT_FDCWD, "./42/bus", [pid 5325] munmap(0x7f138d200000, 138412032 [pid 5060] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] getdents64(4, [pid 5060] <... openat resumed>) = 3 [pid 5059] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5325] <... munmap resumed>) = 0 [pid 5060] newfstatat(3, "", [pid 5058] <... umount2 resumed>) = 0 [pid 5057] close(4 [pid 5056] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5325] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5325] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] getdents64(3, [pid 5057] rmdir("./43/bus" [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5325] close(5 [pid 5059] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5325] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... rmdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 4 [pid 5057] newfstatat(AT_FDCWD, "./43/binderfs", [pid 5056] newfstatat(4, "", [pid 5059] newfstatat(AT_FDCWD, "./43/bus", [pid 5058] newfstatat(AT_FDCWD, "./42/bus", [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./43/binderfs" [pid 5056] getdents64(4, [pid 5059] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... unlink resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... openat resumed>) = 4 [pid 5058] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(4, [pid 5059] newfstatat(4, "", [pid 5058] <... openat resumed>) = 4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] newfstatat(4, "", [pid 5059] getdents64(4, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] close(3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, [pid 5059] getdents64(4, [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... close resumed>) = 0 [pid 5056] close(4 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(4, [pid 5057] rmdir("./43" [pid 5059] close(4 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] close(4 [pid 5059] rmdir("./43/bus" [pid 5058] <... close resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] rmdir("./42/bus" [pid 5059] umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... rmdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./42/bus" [pid 5059] newfstatat(AT_FDCWD, "./43/binderfs", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] newfstatat(AT_FDCWD, "./42/binderfs", [pid 5057] <... rmdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./43/binderfs" [pid 5058] unlink("./42/binderfs" [pid 5056] <... rmdir resumed>) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5325] creat("./file1", 000 [pid 5060] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(3, [pid 5057] mkdir("./44", 0777 [pid 5056] umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(3 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./41/bus", [pid 5058] close(3 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] newfstatat(AT_FDCWD, "./42/binderfs", [pid 5325] <... creat resumed>) = 5 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] rmdir("./42" [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] unlink("./42/binderfs" [pid 5325] exit_group(0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] rmdir("./43" [pid 5056] <... unlink resumed>) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./42" [pid 5325] <... exit_group resumed>) = ? [pid 5060] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] mkdir("./43", 0777 [pid 5060] newfstatat(4, "", [pid 5056] <... mkdir resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] mkdir("./44", 0777 [pid 5060] getdents64(4, [pid 5058] mkdir("./43", 0777 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] getdents64(4, [pid 5059] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5060] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5060] rmdir("./41/bus" [pid 5325] +++ exited with 0 +++ [pid 5060] <... rmdir resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5325, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5060] umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... ioctl resumed>) = 0 [pid 5061] umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(3) = 0 [pid 5060] newfstatat(AT_FDCWD, "./41/binderfs", [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5329 attached [pid 5061] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] unlink("./41/binderfs" [pid 5329] set_robust_list(0x555556c07660, 24 [pid 5061] <... openat resumed>) = 3 [pid 5329] <... set_robust_list resumed>) = 0 [pid 5061] newfstatat(3, "", [pid 5060] <... unlink resumed>) = 0 [pid 5060] getdents64(3, [pid 5329] chdir("./44" [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5329 [pid 5061] getdents64(3, [pid 5060] close(3 [pid 5329] <... chdir resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... close resumed>) = 0 [pid 5329] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] rmdir("./41" [pid 5329] <... prctl resumed>) = 0 [pid 5329] setpgid(0, 0) = 0 [pid 5329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] <... rmdir resumed>) = 0 [pid 5060] mkdir("./42", 0777 [pid 5329] <... openat resumed>) = 3 [pid 5060] <... mkdir resumed>) = 0 [pid 5329] write(3, "1000", 4) = 4 [pid 5329] close(3 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5329] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5329] symlink("/dev/binderfs", "./binderfs" [pid 5061] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./44/bus", [pid 5329] <... symlink resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5061] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5329] memfd_create("syzkaller", 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5061] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./44/bus") = 0 [pid 5056] close(3 [pid 5329] <... memfd_create resumed>) = 3 [pid 5329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] close(3 [pid 5056] <... close resumed>) = 0 [pid 5061] umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5329] <... mmap resumed>) = 0x7f138d200000 [pid 5061] newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./44/binderfs") = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5061] rmdir("./44") = 0 ./strace-static-x86_64: Process 5331 attached [pid 5331] set_robust_list(0x555556c07660, 24) = 0 [pid 5331] chdir("./43" [pid 5061] mkdir("./45", 0777 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5331 [pid 5061] <... mkdir resumed>) = 0 [pid 5331] <... chdir resumed>) = 0 [pid 5331] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5331] setpgid(0, 0) = 0 [pid 5331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 ./strace-static-x86_64: Process 5330 attached [pid 5331] <... openat resumed>) = 3 [pid 5329] 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"..., 524288 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5060] <... ioctl resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5330 [pid 5330] set_robust_list(0x555556c07660, 24./strace-static-x86_64: Process 5332 attached [pid 5331] write(3, "1000", 4 [pid 5330] <... set_robust_list resumed>) = 0 [pid 5329] <... write resumed>) = 524288 [pid 5332] set_robust_list(0x555556c07660, 24 [pid 5330] chdir("./43" [pid 5332] <... set_robust_list resumed>) = 0 [pid 5330] <... chdir resumed>) = 0 [pid 5329] munmap(0x7f138d200000, 138412032 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5332 [pid 5332] chdir("./44" [pid 5331] <... write resumed>) = 4 [pid 5332] <... chdir resumed>) = 0 [pid 5331] close(3 [pid 5330] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5329] <... munmap resumed>) = 0 [pid 5332] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5330] <... prctl resumed>) = 0 [pid 5331] <... close resumed>) = 0 [pid 5330] setpgid(0, 0 [pid 5060] close(3 [pid 5331] symlink("/dev/binderfs", "./binderfs" [pid 5060] <... close resumed>) = 0 [pid 5329] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5332] <... prctl resumed>) = 0 [pid 5331] <... symlink resumed>) = 0 [pid 5330] <... setpgid resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5332] setpgid(0, 0 [pid 5330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5329] <... openat resumed>) = 4 [pid 5332] <... setpgid resumed>) = 0 [pid 5331] memfd_create("syzkaller", 0 [pid 5330] <... openat resumed>) = 3 [pid 5329] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 5333 attached [pid 5332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5331] <... memfd_create resumed>) = 3 [pid 5333] set_robust_list(0x555556c07660, 24 [pid 5331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5333 [pid 5333] <... set_robust_list resumed>) = 0 [pid 5331] <... mmap resumed>) = 0x7f138d200000 [pid 5333] chdir("./42") = 0 [pid 5333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5331] 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"..., 524288 [pid 5333] setpgid(0, 0) = 0 [pid 5333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5332] <... openat resumed>) = 3 [pid 5333] write(3, "1000", 4) = 4 [pid 5333] close(3) = 0 [pid 5333] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5332] write(3, "1000", 4) = 4 [pid 5331] <... write resumed>) = 524288 [pid 5330] write(3, "1000", 4 [pid 5329] <... ioctl resumed>) = 0 [pid 5332] close(3 [pid 5330] <... write resumed>) = 4 [pid 5333] memfd_create("syzkaller", 0 [pid 5332] <... close resumed>) = 0 [pid 5330] close(3 [pid 5332] symlink("/dev/binderfs", "./binderfs" [pid 5330] <... close resumed>) = 0 [pid 5329] close(3 [pid 5333] <... memfd_create resumed>) = 3 [pid 5332] <... symlink resumed>) = 0 [pid 5330] symlink("/dev/binderfs", "./binderfs" [pid 5329] <... close resumed>) = 0 [pid 5333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5332] memfd_create("syzkaller", 0 [pid 5330] <... symlink resumed>) = 0 [pid 5329] close(4 [pid 5333] <... mmap resumed>) = 0x7f138d200000 [pid 5333] 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"..., 524288 [pid 5332] <... memfd_create resumed>) = 3 [pid 5330] memfd_create("syzkaller", 0 [pid 5329] <... close resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5329] mkdir("./bus", 0777 [pid 5333] <... write resumed>) = 524288 [pid 5331] munmap(0x7f138d200000, 138412032 [pid 5330] <... memfd_create resumed>) = 3 [pid 5061] close(3) = 0 [pid 5332] <... mmap resumed>) = 0x7f138d200000 [pid 5331] <... munmap resumed>) = 0 [pid 5330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5329] <... mkdir resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5330] <... mmap resumed>) = 0x7f138d200000 [pid 5331] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5331] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5334 ./strace-static-x86_64: Process 5334 attached [pid 5329] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5333] munmap(0x7f138d200000, 138412032) = 0 [ 79.656274][ T5329] loop1: detected capacity change from 0 to 1024 [pid 5334] set_robust_list(0x555556c07660, 24) = 0 [pid 5333] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5332] 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"..., 524288 [pid 5330] 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"..., 524288 [pid 5334] chdir("./45" [pid 5333] <... openat resumed>) = 4 [pid 5334] <... chdir resumed>) = 0 [pid 5332] <... write resumed>) = 524288 [pid 5330] <... write resumed>) = 524288 [pid 5334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5333] ioctl(4, LOOP_SET_FD, 3 [pid 5334] setpgid(0, 0 [pid 5332] munmap(0x7f138d200000, 138412032 [pid 5331] <... ioctl resumed>) = 0 [pid 5330] munmap(0x7f138d200000, 138412032 [pid 5334] <... setpgid resumed>) = 0 [pid 5332] <... munmap resumed>) = 0 [pid 5330] <... munmap resumed>) = 0 [pid 5334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5332] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5331] close(3 [pid 5334] <... openat resumed>) = 3 [pid 5332] <... openat resumed>) = 4 [pid 5334] write(3, "1000", 4 [pid 5332] ioctl(4, LOOP_SET_FD, 3 [pid 5331] <... close resumed>) = 0 [pid 5330] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5334] <... write resumed>) = 4 [pid 5333] <... ioctl resumed>) = 0 [pid 5333] close(3) = 0 [pid 5333] close(4) = 0 [pid 5333] mkdir("./bus", 0777 [pid 5334] close(3 [pid 5332] <... ioctl resumed>) = 0 [pid 5331] close(4 [pid 5330] <... openat resumed>) = 4 [pid 5329] <... mount resumed>) = 0 [pid 5334] <... close resumed>) = 0 [pid 5332] close(3 [pid 5333] <... mkdir resumed>) = 0 [pid 5331] <... close resumed>) = 0 [pid 5330] ioctl(4, LOOP_SET_FD, 3 [pid 5329] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5332] <... close resumed>) = 0 [pid 5334] symlink("/dev/binderfs", "./binderfs" [pid 5332] close(4 [ 79.707954][ T5331] loop2: detected capacity change from 0 to 1024 [ 79.725281][ T5333] loop4: detected capacity change from 0 to 1024 [ 79.732615][ T5332] loop3: detected capacity change from 0 to 1024 [pid 5333] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5334] <... symlink resumed>) = 0 [pid 5332] <... close resumed>) = 0 [pid 5331] mkdir("./bus", 0777 [pid 5329] <... openat resumed>) = 3 [pid 5334] memfd_create("syzkaller", 0 [pid 5332] mkdir("./bus", 0777 [pid 5331] <... mkdir resumed>) = 0 [pid 5334] <... memfd_create resumed>) = 3 [pid 5334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5331] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5334] 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"..., 524288 [pid 5332] <... mkdir resumed>) = 0 [pid 5329] chdir("./bus" [pid 5333] <... mount resumed>) = 0 [pid 5329] <... chdir resumed>) = 0 [pid 5329] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5332] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5329] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5333] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5329] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5333] <... openat resumed>) = 3 [pid 5333] chdir("./bus") = 0 [pid 5332] <... mount resumed>) = 0 [pid 5333] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5332] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5333] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5333] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5332] <... openat resumed>) = 3 [pid 5332] chdir("./bus") = 0 [pid 5333] <... symlink resumed>) = 0 [pid 5332] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5329] <... creat resumed>) = 4 [pid 5329] rename("./bus", "./file2" [pid 5332] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5332] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5333] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5331] <... mount resumed>) = 0 [pid 5331] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5329] <... rename resumed>) = -1 EEXIST (File exists) [pid 5332] <... symlink resumed>) = 0 [pid 5331] <... openat resumed>) = 3 [pid 5331] chdir("./bus" [pid 5329] memfd_create("syzkaller", 0 [pid 5331] <... chdir resumed>) = 0 [pid 5330] <... ioctl resumed>) = 0 [pid 5329] <... memfd_create resumed>) = 5 [pid 5332] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5331] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5333] <... creat resumed>) = 4 [pid 5331] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5330] close(3 [pid 5329] <... mmap resumed>) = 0x7f138d200000 [pid 5331] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5330] <... close resumed>) = 0 [pid 5333] rename("./bus", "./file2" [pid 5330] close(4) = 0 [pid 5333] <... rename resumed>) = -1 EEXIST (File exists) [pid 5333] memfd_create("syzkaller", 0 [pid 5331] <... symlink resumed>) = 0 [pid 5330] mkdir("./bus", 0777 [pid 5333] <... memfd_create resumed>) = 5 [pid 5330] <... mkdir resumed>) = 0 [pid 5333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5331] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5333] <... mmap resumed>) = 0x7f138d200000 [pid 5332] <... creat resumed>) = 4 [pid 5329] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5333] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5334] <... write resumed>) = 524288 [pid 5332] rename("./bus", "./file2" [pid 5334] munmap(0x7f138d200000, 138412032 [pid 5332] <... rename resumed>) = -1 EEXIST (File exists) [pid 5331] <... creat resumed>) = 4 [pid 5330] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5334] <... munmap resumed>) = 0 [pid 5332] memfd_create("syzkaller", 0 [pid 5334] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5332] <... memfd_create resumed>) = 5 [pid 5331] rename("./bus", "./file2" [pid 5334] <... openat resumed>) = 4 [ 79.752275][ T5330] loop0: detected capacity change from 0 to 1024 [pid 5332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5334] ioctl(4, LOOP_SET_FD, 3 [pid 5332] <... mmap resumed>) = 0x7f138d200000 [pid 5331] <... rename resumed>) = -1 EEXIST (File exists) [pid 5331] memfd_create("syzkaller", 0) = 5 [pid 5331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5329] <... write resumed>) = 524288 [pid 5333] <... write resumed>) = 524288 [pid 5331] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5329] munmap(0x7f138d200000, 138412032) = 0 [pid 5330] <... mount resumed>) = 0 [pid 5332] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5333] munmap(0x7f138d200000, 138412032 [pid 5330] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5329] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5333] <... munmap resumed>) = 0 [pid 5330] <... openat resumed>) = 3 [pid 5329] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5329] close(5 [pid 5332] <... write resumed>) = 524288 [pid 5330] chdir("./bus" [pid 5329] <... close resumed>) = 0 [pid 5333] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5330] <... chdir resumed>) = 0 [pid 5333] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5331] <... write resumed>) = 524288 [pid 5330] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5333] close(5 [pid 5330] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5333] <... close resumed>) = 0 [pid 5330] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5331] munmap(0x7f138d200000, 138412032) = 0 [pid 5331] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5330] <... symlink resumed>) = 0 [pid 5334] <... ioctl resumed>) = 0 [pid 5334] close(3 [pid 5331] close(5 [pid 5334] <... close resumed>) = 0 [pid 5334] close(4 [pid 5332] munmap(0x7f138d200000, 138412032 [pid 5334] <... close resumed>) = 0 [pid 5331] <... close resumed>) = 0 [pid 5330] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5334] mkdir("./bus", 0777) = 0 [pid 5334] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5329] creat("./file1", 000 [pid 5333] creat("./file1", 000 [pid 5332] <... munmap resumed>) = 0 [pid 5330] <... creat resumed>) = 4 [pid 5329] <... creat resumed>) = 5 [pid 5334] <... mount resumed>) = 0 [pid 5332] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5330] rename("./bus", "./file2" [pid 5329] exit_group(0 [pid 5334] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5332] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5329] <... exit_group resumed>) = ? [pid 5334] <... openat resumed>) = 3 [pid 5334] chdir("./bus" [pid 5333] <... creat resumed>) = 5 [pid 5332] close(5 [pid 5331] creat("./file1", 000 [pid 5329] +++ exited with 0 +++ [pid 5334] <... chdir resumed>) = 0 [pid 5330] <... rename resumed>) = -1 EEXIST (File exists) [pid 5334] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5333] exit_group(0 [pid 5330] memfd_create("syzkaller", 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5329, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=1 /* 0.01 s */} --- [pid 5334] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5333] <... exit_group resumed>) = ? [pid 5331] <... creat resumed>) = 5 [pid 5330] <... memfd_create resumed>) = 5 [pid 5334] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5331] exit_group(0) = ? [pid 5330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5334] <... symlink resumed>) = 0 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5334] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5331] +++ exited with 0 +++ [pid 5333] +++ exited with 0 +++ [pid 5330] <... mmap resumed>) = 0x7f138d200000 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5331, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5332] <... close resumed>) = 0 [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5333, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5058] <... restart_syscall resumed>) = 0 [pid 5060] umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(3, "", [pid 5058] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5060] getdents64(3, [pid 5058] newfstatat(3, "", [pid 5057] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5334] <... creat resumed>) = 4 [pid 5332] creat("./file1", 000 [pid 5330] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", [pid 5060] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(3, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 79.803569][ T5334] loop5: detected capacity change from 0 to 1024 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5334] rename("./bus", "./file2" [pid 5060] <... umount2 resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5334] <... rename resumed>) = -1 EEXIST (File exists) [pid 5330] <... write resumed>) = 524288 [pid 5057] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5334] memfd_create("syzkaller", 0) = 5 [pid 5334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5332] <... creat resumed>) = 5 [pid 5058] <... umount2 resumed>) = 0 [pid 5332] exit_group(0 [pid 5060] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5334] <... mmap resumed>) = 0x7f138d200000 [pid 5332] <... exit_group resumed>) = ? [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./42/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5332] +++ exited with 0 +++ [pid 5060] newfstatat(4, "", [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5332, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5057] <... umount2 resumed>) = 0 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... restart_syscall resumed>) = 0 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] getdents64(4, [pid 5058] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] close(4 [pid 5058] newfstatat(AT_FDCWD, "./43/bus", [pid 5060] <... close resumed>) = 0 [pid 5060] rmdir("./42/bus" [pid 5059] umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5334] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5330] munmap(0x7f138d200000, 138412032 [pid 5060] umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... openat resumed>) = 3 [pid 5058] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5330] <... munmap resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./42/binderfs", [pid 5059] newfstatat(3, "", [pid 5058] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5057] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5330] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] unlink("./42/binderfs" [pid 5059] getdents64(3, [pid 5058] newfstatat(4, "", [pid 5330] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... unlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5330] close(5 [pid 5060] getdents64(3, [pid 5058] getdents64(4, [pid 5057] newfstatat(AT_FDCWD, "./44/bus", [pid 5330] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(4, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] close(3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... close resumed>) = 0 [pid 5058] close(4 [pid 5057] <... openat resumed>) = 4 [pid 5060] rmdir("./42" [pid 5058] <... close resumed>) = 0 [pid 5057] newfstatat(4, "", [pid 5060] <... rmdir resumed>) = 0 [pid 5058] rmdir("./43/bus" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] mkdir("./43", 0777 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] getdents64(4, [pid 5060] <... mkdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(4, [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] newfstatat(AT_FDCWD, "./43/binderfs", [pid 5057] close(4 [pid 5060] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] unlink("./43/binderfs" [pid 5057] <... close resumed>) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5057] rmdir("./44/bus" [pid 5058] getdents64(3, [pid 5057] <... rmdir resumed>) = 0 [pid 5330] creat("./file1", 000 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5057] umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] rmdir("./43" [pid 5057] newfstatat(AT_FDCWD, "./44/binderfs", [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./44/binderfs") = 0 [pid 5334] <... write resumed>) = 524288 [pid 5330] <... creat resumed>) = 5 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] mkdir("./44", 0777) = 0 [pid 5057] getdents64(3, [pid 5330] exit_group(0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5334] munmap(0x7f138d200000, 138412032 [pid 5059] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(3 [pid 5330] <... exit_group resumed>) = ? [pid 5057] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./44/bus", [pid 5334] <... munmap resumed>) = 0 [pid 5330] +++ exited with 0 +++ [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] rmdir("./44" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5330, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5334] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5334] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... rmdir resumed>) = 0 [pid 5334] close(5 [pid 5059] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5334] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... openat resumed>) = 4 [pid 5056] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] mkdir("./45", 0777 [pid 5059] newfstatat(4, "", [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(3, "", [pid 5059] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] getdents64(3, [pid 5334] creat("./file1", 000 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5060] <... ioctl resumed>) = 0 [pid 5059] close(4 [pid 5056] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5334] <... creat resumed>) = 5 [pid 5334] exit_group(0 [pid 5059] <... close resumed>) = 0 [pid 5060] close(3) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556c07650) = 5335 [pid 5059] rmdir("./44/bus" [pid 5334] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5335 attached [pid 5334] +++ exited with 0 +++ [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5059] umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5335] set_robust_list(0x555556c07660, 24 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5335] <... set_robust_list resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5334, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5059] newfstatat(AT_FDCWD, "./44/binderfs", [pid 5056] newfstatat(AT_FDCWD, "./43/bus", [pid 5335] chdir("./43" [pid 5061] umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5335] <... chdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] unlink("./44/binderfs" [pid 5056] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5335] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5335] <... prctl resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] <... unlink resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5335] setpgid(0, 0 [pid 5061] newfstatat(3, "", [pid 5059] getdents64(3, [pid 5056] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5335] <... setpgid resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5059] close(3 [pid 5056] newfstatat(4, "", [pid 5335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] getdents64(3, [pid 5059] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] rmdir("./44" [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5335] <... openat resumed>) = 3 [pid 5061] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(4, [pid 5335] write(3, "1000", 4 [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4 [pid 5335] <... write resumed>) = 4 [pid 5059] mkdir("./45", 0777 [pid 5056] <... close resumed>) = 0 [pid 5335] close(3 [pid 5056] rmdir("./43/bus" [pid 5335] <... close resumed>) = 0 [pid 5335] symlink("/dev/binderfs", "./binderfs" [pid 5056] <... rmdir resumed>) = 0 [pid 5335] <... symlink resumed>) = 0 [pid 5335] memfd_create("syzkaller", 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5056] umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5335] <... memfd_create resumed>) = 3 [pid 5061] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... openat resumed>) = 3 [pid 5056] newfstatat(AT_FDCWD, "./43/binderfs", [pid 5061] newfstatat(AT_FDCWD, "./45/bus", [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./43/binderfs" [pid 5335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... unlink resumed>) = 0 [pid 5335] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5061] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] close(3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5058] close(3 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] close(3 [pid 5061] newfstatat(4, "", [pid 5056] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] rmdir("./43"./strace-static-x86_64: Process 5336 attached [pid 5061] getdents64(4, [pid 5058] <... close resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5336] set_robust_list(0x555556c07660, 24 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5336] <... set_robust_list resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] mkdir("./44", 0777./strace-static-x86_64: Process 5337 attached [pid 5061] getdents64(4, [pid 5056] <... mkdir resumed>) = 0 [pid 5337] set_robust_list(0x555556c07660, 24 [pid 5336] chdir("./45" [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5337] <... set_robust_list resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5336 [pid 5337] chdir("./44" [pid 5336] <... chdir resumed>) = 0 [pid 5335] 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"..., 524288 [pid 5061] close(4 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5337 [pid 5056] <... openat resumed>) = 3 [pid 5337] <... chdir resumed>) = 0 [pid 5336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5336] setpgid(0, 0 [pid 5061] <... close resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5337] setpgid(0, 0 [pid 5336] <... setpgid resumed>) = 0 [pid 5335] <... write resumed>) = 524288 [pid 5061] rmdir("./45/bus" [pid 5337] <... setpgid resumed>) = 0 [pid 5337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... rmdir resumed>) = 0 [pid 5337] <... openat resumed>) = 3 [pid 5336] <... openat resumed>) = 3 [pid 5337] write(3, "1000", 4 [pid 5336] write(3, "1000", 4 [pid 5337] <... write resumed>) = 4 [pid 5061] umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5337] close(3 [pid 5336] <... write resumed>) = 4 [pid 5335] munmap(0x7f138d200000, 138412032 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5337] <... close resumed>) = 0 [pid 5336] close(3 [pid 5335] <... munmap resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./45/binderfs", [pid 5337] symlink("/dev/binderfs", "./binderfs" [pid 5336] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5337] <... symlink resumed>) = 0 [pid 5336] symlink("/dev/binderfs", "./binderfs" [pid 5335] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] unlink("./45/binderfs" [pid 5059] <... ioctl resumed>) = 0 [pid 5336] <... symlink resumed>) = 0 [pid 5059] close(3 [pid 5337] memfd_create("syzkaller", 0 [pid 5336] memfd_create("syzkaller", 0 [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5337] <... memfd_create resumed>) = 3 [pid 5337] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5336] <... memfd_create resumed>) = 3 [pid 5061] <... unlink resumed>) = 0 [pid 5337] <... mmap resumed>) = 0x7f138d200000 [pid 5335] <... openat resumed>) = 4 [pid 5061] getdents64(3, [pid 5336] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5335] ioctl(4, LOOP_SET_FD, 3 [pid 5061] close(3./strace-static-x86_64: Process 5338 attached [pid 5336] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... close resumed>) = 0 [pid 5338] set_robust_list(0x555556c07660, 24 [pid 5337] 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"..., 524288 [pid 5061] rmdir("./45" [pid 5336] 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"..., 524288 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5338 [pid 5338] <... set_robust_list resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5337] <... write resumed>) = 524288 [pid 5336] <... write resumed>) = 524288 [pid 5336] munmap(0x7f138d200000, 138412032) = 0 [pid 5338] chdir("./45" [pid 5337] munmap(0x7f138d200000, 138412032 [pid 5335] <... ioctl resumed>) = 0 [pid 5061] mkdir("./46", 0777 [pid 5056] <... ioctl resumed>) = 0 [pid 5338] <... chdir resumed>) = 0 [pid 5337] <... munmap resumed>) = 0 [pid 5336] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5335] close(3 [pid 5061] <... mkdir resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5336] <... openat resumed>) = 4 [pid 5335] <... close resumed>) = 0 [pid 5338] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5337] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... openat resumed>) = 3 [pid 5056] close(3 [pid 5338] <... prctl resumed>) = 0 [pid 5336] ioctl(4, LOOP_SET_FD, 3 [pid 5335] close(4 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5338] setpgid(0, 0 [pid 5335] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5338] <... setpgid resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5339 attached ) = 3 [pid 5339] set_robust_list(0x555556c07660, 24 [pid 5338] write(3, "1000", 4) = 4 [pid 5339] <... set_robust_list resumed>) = 0 [pid 5338] close(3 [pid 5339] chdir("./44" [pid 5338] <... close resumed>) = 0 [pid 5338] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5339] <... chdir resumed>) = 0 [pid 5339] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5339 [pid 5339] <... prctl resumed>) = 0 [pid 5338] memfd_create("syzkaller", 0 [pid 5339] setpgid(0, 0) = 0 [pid 5339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5335] mkdir("./bus", 0777 [pid 5337] <... openat resumed>) = 4 [pid 5339] <... openat resumed>) = 3 [pid 5338] <... memfd_create resumed>) = 3 [pid 5339] write(3, "1000", 4 [pid 5338] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5337] ioctl(4, LOOP_SET_FD, 3 [pid 5336] <... ioctl resumed>) = 0 [pid 5335] <... mkdir resumed>) = 0 [pid 5339] <... write resumed>) = 4 [pid 5338] <... mmap resumed>) = 0x7f138d200000 [ 80.028234][ T5335] loop4: detected capacity change from 0 to 1024 [ 80.056953][ T5336] loop1: detected capacity change from 0 to 1024 [pid 5339] close(3 [pid 5335] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5339] <... close resumed>) = 0 [pid 5338] 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"..., 524288 [pid 5339] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5335] <... mount resumed>) = 0 [pid 5339] memfd_create("syzkaller", 0 [pid 5335] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5339] <... memfd_create resumed>) = 3 [pid 5336] close(3 [pid 5335] chdir("./bus") = 0 [pid 5339] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5335] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5339] <... mmap resumed>) = 0x7f138d200000 [pid 5335] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5339] 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"..., 524288 [pid 5338] <... write resumed>) = 524288 [pid 5336] <... close resumed>) = 0 [pid 5335] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5336] close(4) = 0 [pid 5336] mkdir("./bus", 0777 [pid 5337] <... ioctl resumed>) = 0 [pid 5336] <... mkdir resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5336] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5337] close(3) = 0 [pid 5335] <... symlink resumed>) = 0 [pid 5337] close(4) = 0 [pid 5337] mkdir("./bus", 0777 [pid 5335] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5337] <... mkdir resumed>) = 0 [pid 5339] <... write resumed>) = 524288 [pid 5061] close(3 [pid 5336] <... mount resumed>) = 0 [pid 5337] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5336] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5338] munmap(0x7f138d200000, 138412032 [pid 5336] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5340 attached [pid 5338] <... munmap resumed>) = 0 [pid 5336] chdir("./bus" [pid 5337] <... mount resumed>) = 0 [pid 5335] <... creat resumed>) = 4 [pid 5336] <... chdir resumed>) = 0 [pid 5337] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5340] set_robust_list(0x555556c07660, 24 [pid 5335] rename("./bus", "./file2" [pid 5337] <... openat resumed>) = 3 [pid 5340] <... set_robust_list resumed>) = 0 [pid 5340] chdir("./46" [pid 5338] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5337] chdir("./bus" [pid 5336] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5340 [pid 5340] <... chdir resumed>) = 0 [pid 5339] munmap(0x7f138d200000, 138412032 [pid 5338] <... openat resumed>) = 4 [pid 5337] <... chdir resumed>) = 0 [pid 5336] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5335] <... rename resumed>) = -1 EEXIST (File exists) [ 80.077481][ T5337] loop2: detected capacity change from 0 to 1024 [pid 5340] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5339] <... munmap resumed>) = 0 [pid 5338] ioctl(4, LOOP_SET_FD, 3 [pid 5337] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5336] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5335] memfd_create("syzkaller", 0 [pid 5340] <... prctl resumed>) = 0 [pid 5337] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5335] <... memfd_create resumed>) = 5 [pid 5339] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5339] ioctl(4, LOOP_SET_FD, 3 [pid 5340] setpgid(0, 0 [pid 5335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5337] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5336] <... symlink resumed>) = 0 [pid 5335] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5340] <... setpgid resumed>) = 0 [pid 5340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5336] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5340] write(3, "1000", 4) = 4 [pid 5337] <... symlink resumed>) = 0 [pid 5335] <... write resumed>) = 524288 [pid 5340] close(3) = 0 [pid 5340] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5336] <... creat resumed>) = 4 [pid 5340] memfd_create("syzkaller", 0) = 3 [pid 5337] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5336] rename("./bus", "./file2" [pid 5340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5336] <... rename resumed>) = -1 EEXIST (File exists) [pid 5336] memfd_create("syzkaller", 0 [pid 5339] <... ioctl resumed>) = 0 [pid 5337] <... creat resumed>) = 4 [pid 5336] <... memfd_create resumed>) = 5 [pid 5336] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5338] <... ioctl resumed>) = 0 [pid 5339] close(3 [pid 5338] close(3 [pid 5337] rename("./bus", "./file2" [pid 5340] 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"..., 524288 [pid 5339] <... close resumed>) = 0 [pid 5338] <... close resumed>) = 0 [pid 5336] <... mmap resumed>) = 0x7f138d200000 [pid 5335] munmap(0x7f138d200000, 138412032 [pid 5339] close(4 [pid 5338] close(4 [pid 5339] <... close resumed>) = 0 [pid 5338] <... close resumed>) = 0 [pid 5335] <... munmap resumed>) = 0 [pid 5339] mkdir("./bus", 0777 [pid 5338] mkdir("./bus", 0777 [pid 5339] <... mkdir resumed>) = 0 [pid 5338] <... mkdir resumed>) = 0 [pid 5337] <... rename resumed>) = -1 EEXIST (File exists) [pid 5337] memfd_create("syzkaller", 0 [pid 5339] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5338] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5335] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5340] <... write resumed>) = 524288 [pid 5337] <... memfd_create resumed>) = 5 [pid 5337] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5339] <... mount resumed>) = 0 [pid 5337] <... mmap resumed>) = 0x7f138d200000 [pid 5336] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5335] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5339] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5339] chdir("./bus") = 0 [pid 5339] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5339] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5340] munmap(0x7f138d200000, 138412032 [pid 5339] <... symlink resumed>) = 0 [ 80.119160][ T5338] loop3: detected capacity change from 0 to 1024 [ 80.127556][ T5339] loop0: detected capacity change from 0 to 1024 [pid 5340] <... munmap resumed>) = 0 [pid 5335] close(5) = 0 [pid 5340] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5339] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5340] <... openat resumed>) = 4 [pid 5337] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5336] <... write resumed>) = 524288 [pid 5340] ioctl(4, LOOP_SET_FD, 3 [pid 5338] <... mount resumed>) = 0 [pid 5338] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5339] <... creat resumed>) = 4 [pid 5338] chdir("./bus" [pid 5339] rename("./bus", "./file2" [pid 5338] <... chdir resumed>) = 0 [pid 5339] <... rename resumed>) = -1 EEXIST (File exists) [pid 5338] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5339] memfd_create("syzkaller", 0 [pid 5338] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5339] <... memfd_create resumed>) = 5 [pid 5338] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5339] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5337] <... write resumed>) = 524288 [pid 5339] <... mmap resumed>) = 0x7f138d200000 [pid 5339] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5338] <... symlink resumed>) = 0 [pid 5336] munmap(0x7f138d200000, 138412032) = 0 [pid 5335] creat("./file1", 000 [pid 5336] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5338] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5336] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5337] munmap(0x7f138d200000, 138412032 [pid 5336] close(5 [pid 5335] <... creat resumed>) = 5 [pid 5339] <... write resumed>) = 524288 [pid 5337] <... munmap resumed>) = 0 [pid 5336] <... close resumed>) = 0 [pid 5335] exit_group(0 [pid 5337] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5335] <... exit_group resumed>) = ? [pid 5338] <... creat resumed>) = 4 [pid 5337] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5335] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5335, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=1 /* 0.01 s */} --- [pid 5337] close(5 [pid 5336] creat("./file1", 000 [pid 5338] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5060] umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5338] memfd_create("syzkaller", 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5338] <... memfd_create resumed>) = 5 [pid 5338] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5060] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5339] munmap(0x7f138d200000, 138412032 [pid 5338] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... openat resumed>) = 3 [pid 5339] <... munmap resumed>) = 0 [pid 5336] <... creat resumed>) = 5 [pid 5339] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5337] <... close resumed>) = 0 [pid 5336] exit_group(0 [pid 5060] newfstatat(3, "", [pid 5340] <... ioctl resumed>) = 0 [pid 5339] close(5 [pid 5337] creat("./file1", 000 [pid 5336] <... exit_group resumed>) = ? [pid 5340] close(3 [pid 5339] <... close resumed>) = 0 [pid 5338] <... write resumed>) = 524288 [pid 5336] +++ exited with 0 +++ [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5340] <... close resumed>) = 0 [pid 5338] munmap(0x7f138d200000, 138412032 [pid 5060] getdents64(3, [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5336, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5340] close(4 [pid 5338] <... munmap resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5340] <... close resumed>) = 0 [pid 5340] mkdir("./bus", 0777 [pid 5057] umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5340] <... mkdir resumed>) = 0 [pid 5338] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5340] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5338] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5339] creat("./file1", 000 [pid 5338] close(5 [pid 5057] <... openat resumed>) = 3 [pid 5338] <... close resumed>) = 0 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [ 80.203147][ T5340] loop5: detected capacity change from 0 to 1024 [pid 5057] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5338] creat("./file1", 000 [pid 5340] <... mount resumed>) = 0 [pid 5339] <... creat resumed>) = 5 [pid 5060] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5340] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5339] exit_group(0 [pid 5340] <... openat resumed>) = 3 [pid 5339] <... exit_group resumed>) = ? [pid 5337] <... creat resumed>) = 5 [pid 5060] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5340] chdir("./bus" [pid 5337] exit_group(0 [pid 5340] <... chdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5340] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5337] <... exit_group resumed>) = ? [pid 5057] newfstatat(AT_FDCWD, "./45/bus", [pid 5340] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(AT_FDCWD, "./43/bus", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5340] <... symlink resumed>) = 0 [pid 5338] <... creat resumed>) = 5 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5339] +++ exited with 0 +++ [pid 5338] exit_group(0 [pid 5337] +++ exited with 0 +++ [pid 5060] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... openat resumed>) = 4 [pid 5340] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5337, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5338] <... exit_group resumed>) = ? [pid 5060] <... openat resumed>) = 4 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5339, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5340] <... creat resumed>) = 4 [pid 5338] +++ exited with 0 +++ [pid 5060] newfstatat(4, "", [pid 5057] newfstatat(4, "", [pid 5340] rename("./bus", "./file2" [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5338, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5059] umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5340] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] getdents64(3, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5340] memfd_create("syzkaller", 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] getdents64(4, [pid 5340] <... memfd_create resumed>) = 5 [pid 5060] getdents64(4, [pid 5059] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5340] <... mmap resumed>) = 0x7f138d200000 [pid 5060] getdents64(4, [pid 5058] <... openat resumed>) = 3 [pid 5057] getdents64(4, [pid 5056] newfstatat(3, "", [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... close resumed>) = 0 [pid 5057] close(4 [pid 5060] rmdir("./43/bus" [pid 5056] getdents64(3, [pid 5057] <... close resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] rmdir("./45/bus" [pid 5060] umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(3, "", [pid 5057] umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(AT_FDCWD, "./43/binderfs", [pid 5056] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./45/binderfs", [pid 5058] getdents64(3, [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5340] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] unlink("./43/binderfs" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] unlink("./45/binderfs" [pid 5056] <... umount2 resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./45/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5059] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... unlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(3, [pid 5059] <... openat resumed>) = 4 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5340] <... write resumed>) = 524288 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] close(3 [pid 5056] newfstatat(AT_FDCWD, "./44/bus", [pid 5340] munmap(0x7f138d200000, 138412032 [pid 5059] getdents64(4, [pid 5340] <... munmap resumed>) = 0 [pid 5058] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] rmdir("./45" [pid 5340] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] close(3 [pid 5058] newfstatat(AT_FDCWD, "./44/bus", [pid 5056] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./45/bus") = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] rmdir("./43" [pid 5059] umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./45/binderfs") = 0 [pid 5340] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5059] rmdir("./45" [pid 5340] close(5 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] mkdir("./46", 0777 [pid 5056] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5340] <... close resumed>) = 0 [pid 5060] mkdir("./44", 0777 [pid 5059] mkdir("./46", 0777 [pid 5058] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5340] creat("./file1", 000 [pid 5060] <... mkdir resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] newfstatat(4, "", [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5340] <... creat resumed>) = 5 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(4, "", [pid 5060] <... openat resumed>) = 3 [pid 5059] <... openat resumed>) = 3 [pid 5058] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] getdents64(4, [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... openat resumed>) = 3 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./44/bus" [pid 5056] getdents64(4, [pid 5340] exit_group(0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5340] <... exit_group resumed>) = ? [pid 5058] <... rmdir resumed>) = 0 [pid 5056] rmdir("./44/bus") = 0 [pid 5056] umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5340] +++ exited with 0 +++ [pid 5058] umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] newfstatat(AT_FDCWD, "./44/binderfs", [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5340, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] unlink("./44/binderfs" [pid 5058] unlink("./44/binderfs" [pid 5061] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... unlink resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5058] <... unlink resumed>) = 0 [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, [pid 5056] getdents64(3, [pid 5061] getdents64(3, [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] close(3 [pid 5056] close(3 [pid 5058] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5061] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] rmdir("./44" [pid 5056] rmdir("./44" [pid 5058] <... rmdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5058] mkdir("./45", 0777 [pid 5061] <... umount2 resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] mkdir("./45", 0777 [pid 5061] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... ioctl resumed>) = 0 [pid 5059] close(3 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5057] close(3 [pid 5059] <... close resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./46/bus", [pid 5057] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] close(3) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556c07650) = 5341 [pid 5061] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5342 attached ./strace-static-x86_64: Process 5341 attached ./strace-static-x86_64: Process 5343 attached [pid 5342] set_robust_list(0x555556c07660, 24 [pid 5061] <... openat resumed>) = 4 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5342 [pid 5343] set_robust_list(0x555556c07660, 24) = 0 [pid 5343] chdir("./46") = 0 [pid 5343] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5342] <... set_robust_list resumed>) = 0 [pid 5343] <... prctl resumed>) = 0 [pid 5061] newfstatat(4, "", [pid 5343] setpgid(0, 0 [pid 5342] chdir("./46" [pid 5341] set_robust_list(0x555556c07660, 24 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5343] <... setpgid resumed>) = 0 [pid 5342] <... chdir resumed>) = 0 [pid 5341] <... set_robust_list resumed>) = 0 [pid 5343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5342] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5341] chdir("./44" [pid 5061] getdents64(4, [pid 5342] <... prctl resumed>) = 0 [pid 5341] <... chdir resumed>) = 0 [pid 5343] <... openat resumed>) = 3 [pid 5342] setpgid(0, 0 [pid 5341] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5343] write(3, "1000", 4 [pid 5342] <... setpgid resumed>) = 0 [pid 5341] <... prctl resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5343 [pid 5343] <... write resumed>) = 4 [pid 5341] setpgid(0, 0 [pid 5343] close(3 [pid 5341] <... setpgid resumed>) = 0 [pid 5343] <... close resumed>) = 0 [pid 5342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] getdents64(4, [pid 5343] symlink("/dev/binderfs", "./binderfs" [pid 5342] <... openat resumed>) = 3 [pid 5341] <... openat resumed>) = 3 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5343] <... symlink resumed>) = 0 [pid 5343] memfd_create("syzkaller", 0) = 3 [pid 5343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5342] write(3, "1000", 4 [pid 5341] write(3, "1000", 4 [pid 5061] close(4 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5342] <... write resumed>) = 4 [pid 5061] <... close resumed>) = 0 [pid 5342] close(3 [pid 5061] rmdir("./46/bus" [pid 5342] <... close resumed>) = 0 [pid 5341] <... write resumed>) = 4 [pid 5341] close(3) = 0 [pid 5341] symlink("/dev/binderfs", "./binderfs" [pid 5342] symlink("/dev/binderfs", "./binderfs" [pid 5341] <... symlink resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5342] <... symlink resumed>) = 0 [pid 5341] memfd_create("syzkaller", 0 [pid 5056] close(3 [pid 5342] memfd_create("syzkaller", 0 [pid 5341] <... memfd_create resumed>) = 3 [pid 5061] umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5056] <... close resumed>) = 0 [pid 5343] 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"..., 524288 [pid 5058] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5342] <... memfd_create resumed>) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] newfstatat(AT_FDCWD, "./46/binderfs", [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5344 ./strace-static-x86_64: Process 5344 attached [pid 5342] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5345 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5344] set_robust_list(0x555556c07660, 24) = 0 [pid 5341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 ./strace-static-x86_64: Process 5345 attached [pid 5344] chdir("./45" [pid 5343] <... write resumed>) = 524288 [pid 5341] 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"..., 524288 [pid 5061] unlink("./46/binderfs" [pid 5345] set_robust_list(0x555556c07660, 24 [pid 5344] <... chdir resumed>) = 0 [pid 5344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5344] setpgid(0, 0) = 0 [pid 5342] 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"..., 524288 [pid 5345] <... set_robust_list resumed>) = 0 [pid 5344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5345] chdir("./45" [pid 5061] <... unlink resumed>) = 0 [pid 5345] <... chdir resumed>) = 0 [pid 5061] getdents64(3, [pid 5345] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5345] <... prctl resumed>) = 0 [pid 5061] close(3 [pid 5345] setpgid(0, 0 [pid 5344] <... openat resumed>) = 3 [pid 5343] munmap(0x7f138d200000, 138412032 [pid 5061] <... close resumed>) = 0 [pid 5345] <... setpgid resumed>) = 0 [pid 5343] <... munmap resumed>) = 0 [pid 5341] <... write resumed>) = 524288 [pid 5345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5344] write(3, "1000", 4 [pid 5343] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5342] <... write resumed>) = 524288 [pid 5061] rmdir("./46" [pid 5344] <... write resumed>) = 4 [pid 5344] close(3) = 0 [pid 5344] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5344] memfd_create("syzkaller", 0 [pid 5345] <... openat resumed>) = 3 [pid 5344] <... memfd_create resumed>) = 3 [pid 5343] <... openat resumed>) = 4 [pid 5345] write(3, "1000", 4 [pid 5344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5343] ioctl(4, LOOP_SET_FD, 3 [pid 5061] mkdir("./47", 0777 [pid 5345] <... write resumed>) = 4 [pid 5344] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... mkdir resumed>) = 0 [pid 5345] close(3 [pid 5344] 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"..., 524288 [pid 5341] munmap(0x7f138d200000, 138412032) = 0 [pid 5341] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5341] ioctl(4, LOOP_SET_FD, 3 [pid 5345] <... close resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5345] symlink("/dev/binderfs", "./binderfs" [pid 5343] <... ioctl resumed>) = 0 [pid 5342] munmap(0x7f138d200000, 138412032 [pid 5061] <... openat resumed>) = 3 [pid 5345] <... symlink resumed>) = 0 [pid 5341] <... ioctl resumed>) = 0 [pid 5345] memfd_create("syzkaller", 0 [pid 5344] <... write resumed>) = 524288 [pid 5343] close(3 [pid 5342] <... munmap resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5345] <... memfd_create resumed>) = 3 [pid 5343] <... close resumed>) = 0 [pid 5342] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5343] close(4 [pid 5342] <... openat resumed>) = 4 [pid 5341] close(3 [pid 5345] <... mmap resumed>) = 0x7f138d200000 [pid 5344] munmap(0x7f138d200000, 138412032 [pid 5343] <... close resumed>) = 0 [pid 5345] 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"..., 524288 [pid 5344] <... munmap resumed>) = 0 [pid 5343] mkdir("./bus", 0777 [pid 5342] ioctl(4, LOOP_SET_FD, 3 [pid 5341] <... close resumed>) = 0 [pid 5344] openat(AT_FDCWD, "/dev/loop0", O_RDWR [ 80.472283][ T5343] loop3: detected capacity change from 0 to 1024 [ 80.477513][ T5341] loop4: detected capacity change from 0 to 1024 [ 80.509447][ T5342] loop1: detected capacity change from 0 to 1024 [pid 5341] close(4 [pid 5344] <... openat resumed>) = 4 [pid 5343] <... mkdir resumed>) = 0 [pid 5341] <... close resumed>) = 0 [pid 5341] mkdir("./bus", 0777 [pid 5344] ioctl(4, LOOP_SET_FD, 3 [pid 5343] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5345] <... write resumed>) = 524288 [pid 5345] munmap(0x7f138d200000, 138412032 [pid 5341] <... mkdir resumed>) = 0 [pid 5343] <... mount resumed>) = 0 [pid 5343] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5343] chdir("./bus" [pid 5345] <... munmap resumed>) = 0 [pid 5343] <... chdir resumed>) = 0 [pid 5343] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5343] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5341] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... ioctl resumed>) = 0 [pid 5345] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5343] <... symlink resumed>) = 0 [pid 5345] <... openat resumed>) = 4 [pid 5343] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5345] ioctl(4, LOOP_SET_FD, 3 [pid 5344] <... ioctl resumed>) = 0 [ 80.519178][ T5344] loop0: detected capacity change from 0 to 1024 [pid 5344] close(3 [pid 5342] <... ioctl resumed>) = 0 [pid 5341] <... mount resumed>) = 0 [pid 5061] close(3 [pid 5344] <... close resumed>) = 0 [pid 5342] close(3 [pid 5061] <... close resumed>) = 0 [pid 5342] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5344] close(4 [pid 5342] close(4 [pid 5341] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5344] <... close resumed>) = 0 [pid 5343] <... creat resumed>) = 4 [pid 5342] <... close resumed>) = 0 [pid 5343] rename("./bus", "./file2" [pid 5342] mkdir("./bus", 0777) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5346 [pid 5342] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5344] mkdir("./bus", 0777 [pid 5343] <... rename resumed>) = -1 EEXIST (File exists) [pid 5341] <... openat resumed>) = 3 [pid 5341] chdir("./bus"./strace-static-x86_64: Process 5346 attached [pid 5343] memfd_create("syzkaller", 0 [pid 5346] set_robust_list(0x555556c07660, 24 [pid 5344] <... mkdir resumed>) = 0 [pid 5343] <... memfd_create resumed>) = 5 [pid 5341] <... chdir resumed>) = 0 [pid 5346] <... set_robust_list resumed>) = 0 [pid 5343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5341] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5346] chdir("./47" [pid 5343] <... mmap resumed>) = 0x7f138d200000 [pid 5341] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5346] <... chdir resumed>) = 0 [pid 5343] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5341] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5346] setpgid(0, 0) = 0 [pid 5344] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5342] <... mount resumed>) = 0 [pid 5346] <... openat resumed>) = 3 [pid 5342] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5346] write(3, "1000", 4 [pid 5342] <... openat resumed>) = 3 [pid 5346] <... write resumed>) = 4 [pid 5345] <... ioctl resumed>) = 0 [pid 5343] <... write resumed>) = 524288 [pid 5342] chdir("./bus" [pid 5341] <... symlink resumed>) = 0 [pid 5346] close(3 [pid 5345] close(3 [pid 5346] <... close resumed>) = 0 [pid 5345] <... close resumed>) = 0 [pid 5342] <... chdir resumed>) = 0 [pid 5341] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5346] symlink("/dev/binderfs", "./binderfs" [pid 5345] close(4 [pid 5342] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5346] <... symlink resumed>) = 0 [pid 5345] <... close resumed>) = 0 [pid 5346] memfd_create("syzkaller", 0 [pid 5345] mkdir("./bus", 0777 [pid 5342] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5345] <... mkdir resumed>) = 0 [pid 5342] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5346] <... memfd_create resumed>) = 3 [pid 5346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5342] <... symlink resumed>) = 0 [pid 5346] <... mmap resumed>) = 0x7f138d200000 [pid 5345] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [ 80.545292][ T5345] loop2: detected capacity change from 0 to 1024 [pid 5342] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5346] 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"..., 524288 [pid 5345] <... mount resumed>) = 0 [pid 5344] <... mount resumed>) = 0 [pid 5343] munmap(0x7f138d200000, 138412032 [pid 5342] <... creat resumed>) = 4 [pid 5341] <... creat resumed>) = 4 [pid 5343] <... munmap resumed>) = 0 [pid 5342] rename("./bus", "./file2" [pid 5344] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5342] <... rename resumed>) = -1 EEXIST (File exists) [pid 5341] rename("./bus", "./file2" [pid 5345] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5343] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5342] memfd_create("syzkaller", 0 [pid 5345] <... openat resumed>) = 3 [pid 5344] <... openat resumed>) = 3 [pid 5343] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5342] <... memfd_create resumed>) = 5 [pid 5345] chdir("./bus" [pid 5344] chdir("./bus" [pid 5343] close(5 [pid 5342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5345] <... chdir resumed>) = 0 [pid 5344] <... chdir resumed>) = 0 [pid 5343] <... close resumed>) = 0 [pid 5342] <... mmap resumed>) = 0x7f138d200000 [pid 5341] <... rename resumed>) = -1 EEXIST (File exists) [pid 5345] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5344] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5345] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5344] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5345] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5341] memfd_create("syzkaller", 0 [pid 5344] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5342] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5341] <... memfd_create resumed>) = 5 [pid 5345] <... symlink resumed>) = 0 [pid 5346] <... write resumed>) = 524288 [pid 5345] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5344] <... symlink resumed>) = 0 [pid 5341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5343] creat("./file1", 000 [pid 5341] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5345] <... creat resumed>) = 4 [pid 5346] munmap(0x7f138d200000, 138412032 [pid 5345] rename("./bus", "./file2" [pid 5344] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5346] <... munmap resumed>) = 0 [pid 5346] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5343] <... creat resumed>) = 5 [pid 5346] <... openat resumed>) = 4 [pid 5343] exit_group(0 [pid 5346] ioctl(4, LOOP_SET_FD, 3 [pid 5345] <... rename resumed>) = -1 EEXIST (File exists) [pid 5343] <... exit_group resumed>) = ? [pid 5344] <... creat resumed>) = 4 [pid 5344] rename("./bus", "./file2" [pid 5343] +++ exited with 0 +++ [pid 5345] memfd_create("syzkaller", 0 [pid 5344] <... rename resumed>) = -1 EEXIST (File exists) [pid 5341] <... write resumed>) = 524288 [pid 5345] <... memfd_create resumed>) = 5 [pid 5345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5344] memfd_create("syzkaller", 0 [pid 5342] <... write resumed>) = 524288 [pid 5341] munmap(0x7f138d200000, 138412032 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5343, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5342] munmap(0x7f138d200000, 138412032 [pid 5059] umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5345] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5344] <... memfd_create resumed>) = 5 [pid 5342] <... munmap resumed>) = 0 [pid 5341] <... munmap resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5341] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] getdents64(3, [pid 5344] <... mmap resumed>) = 0x7f138d200000 [pid 5342] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5341] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5342] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5342] close(5) = 0 [pid 5341] close(5 [pid 5345] <... write resumed>) = 524288 [pid 5341] <... close resumed>) = 0 [pid 5342] creat("./file1", 000 [pid 5344] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... umount2 resumed>) = 0 [pid 5346] <... ioctl resumed>) = 0 [pid 5059] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5346] close(3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5346] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./46/bus", [pid 5346] close(4) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5346] mkdir("./bus", 0777) = 0 [pid 5059] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5345] munmap(0x7f138d200000, 138412032) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", [pid 5346] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5342] <... creat resumed>) = 5 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5345] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5342] exit_group(0 [pid 5345] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5342] <... exit_group resumed>) = ? [pid 5341] creat("./file1", 000 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5346] <... mount resumed>) = 0 [pid 5345] close(5 [pid 5342] +++ exited with 0 +++ [pid 5346] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5345] <... close resumed>) = 0 [pid 5346] <... openat resumed>) = 3 [pid 5346] chdir("./bus") = 0 [pid 5344] <... write resumed>) = 524288 [pid 5059] getdents64(4, [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5342, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5346] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5344] munmap(0x7f138d200000, 138412032 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5346] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 80.648417][ T5346] loop5: detected capacity change from 0 to 1024 [pid 5059] close(4 [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5346] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5345] creat("./file1", 000 [pid 5344] <... munmap resumed>) = 0 [pid 5341] <... creat resumed>) = 5 [pid 5059] <... close resumed>) = 0 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5341] exit_group(0 [pid 5059] rmdir("./46/bus" [pid 5346] <... symlink resumed>) = 0 [pid 5344] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5341] <... exit_group resumed>) = ? [pid 5059] <... rmdir resumed>) = 0 [pid 5346] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5344] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5341] +++ exited with 0 +++ [pid 5059] umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5344] close(5 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5341, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5059] newfstatat(AT_FDCWD, "./46/binderfs", [pid 5057] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5346] <... creat resumed>) = 4 [pid 5345] <... creat resumed>) = 5 [pid 5060] umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5346] rename("./bus", "./file2" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] newfstatat(3, "", [pid 5060] <... openat resumed>) = 3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] newfstatat(3, "", [pid 5057] getdents64(3, [pid 5346] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5346] memfd_create("syzkaller", 0 [pid 5345] exit_group(0 [pid 5344] <... close resumed>) = 0 [pid 5060] getdents64(3, [pid 5059] unlink("./46/binderfs" [pid 5057] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5345] <... exit_group resumed>) = ? [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5345] +++ exited with 0 +++ [pid 5060] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... unlink resumed>) = 0 [pid 5346] <... memfd_create resumed>) = 5 [pid 5059] getdents64(3, [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5345, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5059] rmdir("./46" [pid 5346] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5344] creat("./file1", 000 [pid 5059] mkdir("./47", 0777 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... mkdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", [pid 5059] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5344] <... creat resumed>) = 5 [pid 5346] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5344] exit_group(0) = ? [pid 5344] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5344, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5056] umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = 0 [pid 5346] <... write resumed>) = 524288 [pid 5346] munmap(0x7f138d200000, 138412032 [pid 5060] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./44/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5346] <... munmap resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5060] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4) = 0 [pid 5060] rmdir("./44/bus" [pid 5058] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5346] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./45/bus", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5346] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] newfstatat(AT_FDCWD, "./44/binderfs", [pid 5058] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./45/bus", [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5346] close(5 [pid 5060] unlink("./44/binderfs" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./46/bus", [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] getdents64(3, [pid 5056] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] close(3) = 0 [pid 5060] rmdir("./44" [pid 5058] newfstatat(4, "", [pid 5056] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... rmdir resumed>) = 0 [pid 5060] mkdir("./45", 0777 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5346] <... close resumed>) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] getdents64(4, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] newfstatat(4, "", [pid 5060] <... openat resumed>) = 3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5057] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(4, [pid 5346] creat("./file1", 000 [pid 5058] close(4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... close resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] rmdir("./45/bus") = 0 [pid 5057] <... openat resumed>) = 4 [pid 5056] getdents64(4, [pid 5057] newfstatat(4, "", [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5346] <... creat resumed>) = 5 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] close(4 [pid 5346] exit_group(0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(4, [pid 5056] <... close resumed>) = 0 [pid 5346] <... exit_group resumed>) = ? [pid 5058] newfstatat(AT_FDCWD, "./45/binderfs", [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] rmdir("./45/bus" [pid 5346] +++ exited with 0 +++ [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./45/binderfs" [pid 5057] getdents64(4, [pid 5056] <... rmdir resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5346, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./45/binderfs", [pid 5057] close(4) = 0 [pid 5061] umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] rmdir("./46/bus" [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] unlink("./45/binderfs" [pid 5061] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] getdents64(3, [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5061] newfstatat(3, "", [pid 5059] close(3 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(3, [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] close(3 [pid 5057] umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] getdents64(3, [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... close resumed>) = 0 [pid 5056] close(3./strace-static-x86_64: Process 5347 attached [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] rmdir("./45" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... close resumed>) = 0 [pid 5061] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./45" [pid 5347] set_robust_list(0x555556c07660, 24 [pid 5060] <... ioctl resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./46/binderfs" [pid 5347] <... set_robust_list resumed>) = 0 [pid 5056] mkdir("./46", 0777 [pid 5057] <... unlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5058] mkdir("./46", 0777 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5347] chdir("./47" [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5347 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] close(3 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5347] <... chdir resumed>) = 0 [pid 5347] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5057] rmdir("./46" [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... rmdir resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = 0 [pid 5347] <... prctl resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5347] setpgid(0, 0 [pid 5057] mkdir("./47", 0777) = 0 [pid 5060] close(3 [pid 5347] <... setpgid resumed>) = 0 [pid 5061] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5060] <... close resumed>) = 0 [pid 5347] write(3, "1000", 4) = 4 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5347] close(3) = 0 [pid 5347] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5347] memfd_create("syzkaller", 0) = 3 [pid 5347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 ./strace-static-x86_64: Process 5348 attached [pid 5347] 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"..., 524288 [pid 5061] newfstatat(AT_FDCWD, "./47/bus", [pid 5057] <... openat resumed>) = 3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5348] set_robust_list(0x555556c07660, 24 [pid 5347] <... write resumed>) = 524288 [pid 5061] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5348 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5348] <... set_robust_list resumed>) = 0 [pid 5347] munmap(0x7f138d200000, 138412032 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5348] chdir("./45" [pid 5061] openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5348] <... chdir resumed>) = 0 [pid 5347] <... munmap resumed>) = 0 [pid 5347] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5347] ioctl(4, LOOP_SET_FD, 3 [pid 5348] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... openat resumed>) = 4 [pid 5058] <... ioctl resumed>) = 0 [pid 5348] <... prctl resumed>) = 0 [pid 5061] newfstatat(4, "", [pid 5058] close(3 [pid 5057] <... ioctl resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... close resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5061] getdents64(4, [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5348] setpgid(0, 0) = 0 [pid 5348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5348] write(3, "1000", 4 [pid 5056] close(3 [pid 5061] getdents64(4, ./strace-static-x86_64: Process 5349 attached 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5349 [pid 5061] close(4) = 0 [pid 5348] <... write resumed>) = 4 [pid 5056] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5349] set_robust_list(0x555556c07660, 24 [pid 5061] rmdir("./47/bus" [pid 5057] close(3 [pid 5349] <... set_robust_list resumed>) = 0 [pid 5348] close(3) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5350 [pid 5348] symlink("/dev/binderfs", "./binderfs" [pid 5349] chdir("./46" [pid 5061] <... rmdir resumed>) = 0 [pid 5349] <... chdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5348] <... symlink resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5348] memfd_create("syzkaller", 0) = 3 [pid 5348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5349] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5350 attached ) = 0 [pid 5348] <... mmap resumed>) = 0x7f138d200000 [pid 5350] set_robust_list(0x555556c07660, 24 [pid 5349] setpgid(0, 0 [pid 5348] 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"..., 524288 [pid 5061] umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5350] <... set_robust_list resumed>) = 0 [pid 5349] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5351 attached [pid 5350] chdir("./46" [pid 5349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5347] <... ioctl resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5351 [pid 5351] set_robust_list(0x555556c07660, 24 [pid 5350] <... chdir resumed>) = 0 [pid 5347] close(3 [pid 5351] <... set_robust_list resumed>) = 0 [pid 5347] <... close resumed>) = 0 [pid 5351] chdir("./47" [pid 5350] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5347] close(4 [pid 5351] <... chdir resumed>) = 0 [pid 5350] <... prctl resumed>) = 0 [pid 5349] <... openat resumed>) = 3 [pid 5347] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5351] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5347] mkdir("./bus", 0777 [pid 5351] <... prctl resumed>) = 0 [pid 5348] <... write resumed>) = 524288 [pid 5347] <... mkdir resumed>) = 0 [pid 5351] setpgid(0, 0 [pid 5350] setpgid(0, 0 [pid 5349] write(3, "1000", 4 [pid 5061] newfstatat(AT_FDCWD, "./47/binderfs", [pid 5350] <... setpgid resumed>) = 0 [pid 5349] <... write resumed>) = 4 [pid 5351] <... setpgid resumed>) = 0 [pid 5350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5349] close(3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5350] <... openat resumed>) = 3 [pid 5349] <... close resumed>) = 0 [pid 5061] unlink("./47/binderfs" [pid 5351] <... openat resumed>) = 3 [pid 5349] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... unlink resumed>) = 0 [pid 5351] write(3, "1000", 4 [pid 5061] getdents64(3, [pid 5351] <... write resumed>) = 4 [pid 5349] <... symlink resumed>) = 0 [pid 5347] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5351] close(3 [pid 5350] write(3, "1000", 4 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5351] <... close resumed>) = 0 [pid 5350] <... write resumed>) = 4 [pid 5351] symlink("/dev/binderfs", "./binderfs" [pid 5061] close(3 [pid 5350] close(3 [pid 5349] memfd_create("syzkaller", 0 [pid 5351] <... symlink resumed>) = 0 [pid 5350] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5351] memfd_create("syzkaller", 0 [pid 5350] symlink("/dev/binderfs", "./binderfs" [pid 5349] <... memfd_create resumed>) = 3 [pid 5061] rmdir("./47" [pid 5351] <... memfd_create resumed>) = 3 [pid 5351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5351] 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"..., 524288 [pid 5350] <... symlink resumed>) = 0 [pid 5349] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5350] memfd_create("syzkaller", 0 [pid 5349] <... mmap resumed>) = 0x7f138d200000 [pid 5348] munmap(0x7f138d200000, 138412032 [pid 5061] mkdir("./48", 0777 [pid 5348] <... munmap resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5348] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 80.860721][ T5347] loop3: detected capacity change from 0 to 1024 [pid 5348] ioctl(4, LOOP_SET_FD, 3 [pid 5350] <... memfd_create resumed>) = 3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... openat resumed>) = 3 [pid 5350] <... mmap resumed>) = 0x7f138d200000 [pid 5349] 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"..., 524288 [pid 5347] <... mount resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5347] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5347] chdir("./bus" [pid 5349] <... write resumed>) = 524288 [pid 5347] <... chdir resumed>) = 0 [pid 5347] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5347] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5350] 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"..., 524288 [pid 5348] <... ioctl resumed>) = 0 [pid 5348] close(3) = 0 [pid 5348] close(4) = 0 [pid 5348] mkdir("./bus", 0777) = 0 [pid 5351] <... write resumed>) = 524288 [pid 5348] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5347] <... symlink resumed>) = 0 [pid 5347] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5349] munmap(0x7f138d200000, 138412032 [pid 5351] munmap(0x7f138d200000, 138412032 [pid 5349] <... munmap resumed>) = 0 [pid 5348] <... mount resumed>) = 0 [pid 5351] <... munmap resumed>) = 0 [pid 5348] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5351] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5348] <... openat resumed>) = 3 [pid 5347] <... creat resumed>) = 4 [pid 5349] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5348] chdir("./bus" [pid 5347] rename("./bus", "./file2" [pid 5351] <... openat resumed>) = 4 [pid 5350] <... write resumed>) = 524288 [pid 5349] <... openat resumed>) = 4 [pid 5348] <... chdir resumed>) = 0 [pid 5347] <... rename resumed>) = -1 EEXIST (File exists) [pid 5351] ioctl(4, LOOP_SET_FD, 3 [pid 5348] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5347] memfd_create("syzkaller", 0 [pid 5350] munmap(0x7f138d200000, 138412032 [pid 5349] ioctl(4, LOOP_SET_FD, 3 [pid 5348] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5347] <... memfd_create resumed>) = 5 [pid 5061] <... ioctl resumed>) = 0 [ 80.918495][ T5348] loop4: detected capacity change from 0 to 1024 [ 80.957023][ T5351] loop1: detected capacity change from 0 to 1024 [pid 5348] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5347] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5348] <... symlink resumed>) = 0 [pid 5350] <... munmap resumed>) = 0 [pid 5349] <... ioctl resumed>) = 0 [pid 5348] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5347] <... write resumed>) = 524288 [pid 5348] <... creat resumed>) = 4 [pid 5350] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5349] close(3 [pid 5348] rename("./bus", "./file2" [pid 5061] close(3 [pid 5350] <... openat resumed>) = 4 [pid 5349] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5349] close(4 [pid 5350] ioctl(4, LOOP_SET_FD, 3 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5349] <... close resumed>) = 0 [pid 5347] munmap(0x7f138d200000, 138412032) = 0 [pid 5347] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5347] close(5) = 0 [pid 5351] <... ioctl resumed>) = 0 [pid 5351] close(3) = 0 [pid 5351] close(4) = 0 [pid 5351] mkdir("./bus", 0777) = 0 [pid 5349] mkdir("./bus", 0777 [pid 5351] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, ""./strace-static-x86_64: Process 5352 attached [pid 5350] <... ioctl resumed>) = 0 [pid 5349] <... mkdir resumed>) = 0 [pid 5348] <... rename resumed>) = -1 EEXIST (File exists) [pid 5347] creat("./file1", 000 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5352 [pid 5349] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5352] set_robust_list(0x555556c07660, 24 [pid 5348] memfd_create("syzkaller", 0 [pid 5352] <... set_robust_list resumed>) = 0 [pid 5348] <... memfd_create resumed>) = 5 [pid 5350] close(3 [pid 5352] chdir("./48" [pid 5348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5352] <... chdir resumed>) = 0 [pid 5350] <... close resumed>) = 0 [pid 5348] <... mmap resumed>) = 0x7f138d200000 [pid 5352] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5350] close(4 [pid 5352] <... prctl resumed>) = 0 [pid 5352] setpgid(0, 0 [pid 5350] <... close resumed>) = 0 [pid 5352] <... setpgid resumed>) = 0 [pid 5350] mkdir("./bus", 0777 [pid 5352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5350] <... mkdir resumed>) = 0 [pid 5352] <... openat resumed>) = 3 [pid 5352] write(3, "1000", 4 [pid 5349] <... mount resumed>) = 0 [pid 5347] <... creat resumed>) = 5 [pid 5352] <... write resumed>) = 4 [pid 5350] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5349] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5347] exit_group(0 [pid 5352] close(3 [pid 5347] <... exit_group resumed>) = ? [pid 5352] <... close resumed>) = 0 [pid 5349] <... openat resumed>) = 3 [pid 5348] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5347] +++ exited with 0 +++ [pid 5352] symlink("/dev/binderfs", "./binderfs" [pid 5351] <... mount resumed>) = 0 [pid 5351] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5347, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5351] <... openat resumed>) = 3 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5352] <... symlink resumed>) = 0 [pid 5351] chdir("./bus" [pid 5349] chdir("./bus" [pid 5059] <... restart_syscall resumed>) = 0 [pid 5351] <... chdir resumed>) = 0 [ 80.966231][ T5349] loop2: detected capacity change from 0 to 1024 [ 80.985917][ T5350] loop0: detected capacity change from 0 to 1024 [pid 5351] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5059] umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5351] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5348] <... write resumed>) = 524288 [pid 5349] <... chdir resumed>) = 0 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5352] memfd_create("syzkaller", 0 [pid 5350] <... mount resumed>) = 0 [pid 5349] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5350] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5352] <... memfd_create resumed>) = 3 [pid 5351] <... symlink resumed>) = 0 [pid 5350] <... openat resumed>) = 3 [pid 5349] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5349] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5351] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5350] chdir("./bus" [pid 5352] <... mmap resumed>) = 0x7f138d200000 [pid 5350] <... chdir resumed>) = 0 [pid 5348] munmap(0x7f138d200000, 138412032 [pid 5350] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5349] <... symlink resumed>) = 0 [pid 5350] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5350] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5351] <... creat resumed>) = 4 [pid 5349] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5348] <... munmap resumed>) = 0 [pid 5351] rename("./bus", "./file2" [pid 5350] <... symlink resumed>) = 0 [pid 5348] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5350] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5348] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5352] 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"..., 524288 [pid 5349] <... creat resumed>) = 4 [pid 5348] close(5 [pid 5059] <... umount2 resumed>) = 0 [pid 5349] rename("./bus", "./file2" [pid 5351] <... rename resumed>) = -1 EEXIST (File exists) [pid 5350] <... creat resumed>) = 4 [pid 5350] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5351] memfd_create("syzkaller", 0 [pid 5350] memfd_create("syzkaller", 0 [pid 5351] <... memfd_create resumed>) = 5 [pid 5350] <... memfd_create resumed>) = 5 [pid 5059] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5349] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5351] <... mmap resumed>) = 0x7f138d200000 [pid 5350] <... mmap resumed>) = 0x7f138d200000 [pid 5059] newfstatat(AT_FDCWD, "./47/bus", [pid 5351] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5350] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5349] memfd_create("syzkaller", 0 [pid 5348] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] newfstatat(4, "", [pid 5349] <... memfd_create resumed>) = 5 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5349] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5352] <... write resumed>) = 524288 [pid 5349] <... mmap resumed>) = 0x7f138d200000 [pid 5348] creat("./file1", 000 [pid 5059] close(4) = 0 [pid 5349] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] rmdir("./47/bus" [pid 5352] munmap(0x7f138d200000, 138412032) = 0 [pid 5350] <... write resumed>) = 524288 [pid 5059] <... rmdir resumed>) = 0 [pid 5352] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5059] umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5352] ioctl(4, LOOP_SET_FD, 3 [pid 5348] <... creat resumed>) = 5 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5348] exit_group(0 [pid 5059] newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./47/binderfs") = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5059] rmdir("./47") = 0 [pid 5059] mkdir("./48", 0777 [pid 5351] <... write resumed>) = 524288 [pid 5059] <... mkdir resumed>) = 0 [pid 5351] munmap(0x7f138d200000, 138412032 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5350] munmap(0x7f138d200000, 138412032 [pid 5059] <... openat resumed>) = 3 [pid 5351] <... munmap resumed>) = 0 [pid 5350] <... munmap resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5350] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5351] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5349] <... write resumed>) = 524288 [pid 5348] <... exit_group resumed>) = ? [pid 5351] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5350] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5351] close(5 [pid 5350] close(5 [pid 5348] +++ exited with 0 +++ [pid 5352] <... ioctl resumed>) = 0 [pid 5349] munmap(0x7f138d200000, 138412032 [pid 5352] close(3 [pid 5349] <... munmap resumed>) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5348, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5352] <... close resumed>) = 0 [pid 5349] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5352] close(4 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5060] umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5352] <... close resumed>) = 0 [pid 5352] mkdir("./bus", 0777 [pid 5060] <... openat resumed>) = 3 [pid 5352] <... mkdir resumed>) = 0 [pid 5352] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5352] <... mount resumed>) = 0 [pid 5351] <... close resumed>) = 0 [pid 5349] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] getdents64(3, [pid 5350] <... close resumed>) = 0 [pid 5350] creat("./file1", 000) = 5 [pid 5350] exit_group(0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5352] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5349] close(5 [pid 5350] <... exit_group resumed>) = ? [pid 5350] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5350, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5349] <... close resumed>) = 0 [pid 5352] <... openat resumed>) = 3 [pid 5351] creat("./file1", 000 [pid 5060] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = 0 [pid 5056] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./46/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5352] chdir("./bus" [pid 5056] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5352] <... chdir resumed>) = 0 [pid 5349] creat("./file1", 000 [pid 5352] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5351] <... creat resumed>) = 5 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5352] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5351] exit_group(0 [pid 5352] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5351] <... exit_group resumed>) = ? [ 81.076338][ T5352] loop5: detected capacity change from 0 to 1024 [pid 5352] <... symlink resumed>) = 0 [pid 5351] +++ exited with 0 +++ [pid 5349] <... creat resumed>) = 5 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5352] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5349] exit_group(0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5351, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5352] <... creat resumed>) = 4 [pid 5349] <... exit_group resumed>) = ? [pid 5352] rename("./bus", "./file2" [pid 5349] +++ exited with 0 +++ [pid 5352] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5349, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] <... openat resumed>) = 4 [pid 5352] memfd_create("syzkaller", 0 [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5057] umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5352] <... memfd_create resumed>) = 5 [pid 5058] <... restart_syscall resumed>) = 0 [pid 5056] newfstatat(4, "", [pid 5352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5352] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5352] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... umount2 resumed>) = 0 [pid 5059] close(3 [pid 5058] umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(4, [pid 5059] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... openat resumed>) = 3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 5353 attached [pid 5058] getdents64(3, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5353] set_robust_list(0x555556c07660, 24 [pid 5060] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5353] <... set_robust_list resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5353 [pid 5058] <... umount2 resumed>) = 0 [pid 5058] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./46/bus", [pid 5060] newfstatat(AT_FDCWD, "./45/bus", [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5058] newfstatat(4, "", [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] getdents64(4, [pid 5060] <... openat resumed>) = 4 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] newfstatat(4, "", [pid 5058] close(4 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... close resumed>) = 0 [pid 5060] getdents64(4, [pid 5058] rmdir("./46/bus") = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5352] <... write resumed>) = 524288 [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4 [pid 5352] munmap(0x7f138d200000, 138412032 [pid 5060] <... close resumed>) = 0 [pid 5060] rmdir("./45/bus" [pid 5058] umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5352] <... munmap resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5352] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] unlink("./46/binderfs" [pid 5353] chdir("./48" [pid 5352] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] close(4 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5352] close(5 [pid 5057] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./45/binderfs", [pid 5058] getdents64(3, [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] unlink("./45/binderfs" [pid 5058] close(3 [pid 5060] <... unlink resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./46") = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] mkdir("./47", 0777 [pid 5060] close(3 [pid 5058] <... mkdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5060] rmdir("./45" [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... rmdir resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5060] mkdir("./46", 0777 [pid 5353] <... chdir resumed>) = 0 [pid 5352] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] rmdir("./46/bus" [pid 5353] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5352] creat("./file1", 000 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5353] <... prctl resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5353] setpgid(0, 0 [pid 5057] newfstatat(AT_FDCWD, "./47/bus", [pid 5056] umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5353] <... setpgid resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(AT_FDCWD, "./46/binderfs", [pid 5353] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5353] write(3, "1000", 4 [pid 5057] openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] unlink("./46/binderfs" [pid 5353] <... write resumed>) = 4 [pid 5057] <... openat resumed>) = 4 [pid 5056] <... unlink resumed>) = 0 [pid 5353] close(3 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] newfstatat(4, "", [pid 5056] getdents64(3, [pid 5353] <... close resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5353] symlink("/dev/binderfs", "./binderfs" [pid 5352] <... creat resumed>) = 5 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5058] <... ioctl resumed>) = 0 [pid 5353] <... symlink resumed>) = 0 [pid 5056] close(3 [pid 5353] memfd_create("syzkaller", 0) = 3 [pid 5056] <... close resumed>) = 0 [pid 5353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] rmdir("./46" [pid 5353] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... rmdir resumed>) = 0 [pid 5353] 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"..., 524288 [pid 5056] mkdir("./47", 0777) = 0 [pid 5353] <... write resumed>) = 524288 [pid 5057] getdents64(4, [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... openat resumed>) = 3 [pid 5057] getdents64(4, [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5058] close(3 [pid 5057] <... close resumed>) = 0 [pid 5352] exit_group(0) = ? [pid 5058] <... close resumed>) = 0 [pid 5057] rmdir("./47/bus" [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... rmdir resumed>) = 0 [pid 5057] umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./47/binderfs" [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5354 [pid 5057] <... unlink resumed>) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./47" [pid 5352] +++ exited with 0 +++ [pid 5057] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5354 attached [pid 5057] mkdir("./48", 0777 [pid 5354] set_robust_list(0x555556c07660, 24 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5352, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5057] <... mkdir resumed>) = 0 [pid 5354] <... set_robust_list resumed>) = 0 [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5354] chdir("./47" [pid 5353] munmap(0x7f138d200000, 138412032 [pid 5061] <... restart_syscall resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5354] <... chdir resumed>) = 0 [pid 5353] <... munmap resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5354] setpgid(0, 0) = 0 [pid 5354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5354] <... openat resumed>) = 3 [pid 5353] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5353] <... openat resumed>) = 4 [pid 5061] <... openat resumed>) = 3 [pid 5354] write(3, "1000", 4 [pid 5353] ioctl(4, LOOP_SET_FD, 3 [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5354] <... write resumed>) = 4 [pid 5061] getdents64(3, [pid 5354] close(3 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5354] <... close resumed>) = 0 [pid 5061] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5354] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5354] memfd_create("syzkaller", 0) = 3 [pid 5354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5354] 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"..., 524288 [pid 5061] <... umount2 resumed>) = 0 [pid 5061] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./48/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5061] newfstatat(4, "", [pid 5056] <... ioctl resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... ioctl resumed>) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./48/bus" [pid 5354] <... write resumed>) = 524288 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5061] umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] close(3 [pid 5353] <... ioctl resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5353] close(3 [pid 5061] newfstatat(AT_FDCWD, "./48/binderfs", [pid 5060] close(3 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5353] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... close resumed>) = 0 [pid 5353] close(4) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5355 [pid 5056] close(3 [pid 5061] unlink("./48/binderfs"./strace-static-x86_64: Process 5355 attached [pid 5354] munmap(0x7f138d200000, 138412032 [pid 5353] mkdir("./bus", 0777 [pid 5061] <... unlink resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5355] set_robust_list(0x555556c07660, 24 [pid 5354] <... munmap resumed>) = 0 [pid 5353] <... mkdir resumed>) = 0 [pid 5061] getdents64(3, [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5355] <... set_robust_list resumed>) = 0 [pid 5354] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5353] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, ""./strace-static-x86_64: Process 5356 attached [pid 5355] chdir("./48" [pid 5354] <... openat resumed>) = 4 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5355] <... chdir resumed>) = 0 [pid 5354] ioctl(4, LOOP_SET_FD, 3 [pid 5061] close(3 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5356 [pid 5356] set_robust_list(0x555556c07660, 24 [pid 5355] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... close resumed>) = 0 [pid 5356] <... set_robust_list resumed>) = 0 [pid 5355] <... prctl resumed>) = 0 [pid 5061] rmdir("./48" [pid 5356] chdir("./47" [pid 5355] setpgid(0, 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5355] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5357 attached [pid 5356] <... chdir resumed>) = 0 [pid 5355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5356] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5357 [pid 5355] <... openat resumed>) = 3 [pid 5061] mkdir("./49", 0777 [pid 5356] <... prctl resumed>) = 0 [pid 5357] set_robust_list(0x555556c07660, 24 [pid 5356] setpgid(0, 0 [pid 5355] write(3, "1000", 4 [pid 5353] <... mount resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5355] <... write resumed>) = 4 [pid 5353] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5355] close(3 [pid 5353] <... openat resumed>) = 3 [pid 5355] <... close resumed>) = 0 [pid 5353] chdir("./bus" [pid 5355] symlink("/dev/binderfs", "./binderfs" [pid 5353] <... chdir resumed>) = 0 [pid 5356] <... setpgid resumed>) = 0 [pid 5353] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5355] <... symlink resumed>) = 0 [pid 5353] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5355] memfd_create("syzkaller", 0 [pid 5353] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5355] <... memfd_create resumed>) = 3 [pid 5353] <... symlink resumed>) = 0 [pid 5355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5353] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5355] <... mmap resumed>) = 0x7f138d200000 [pid 5353] <... creat resumed>) = 4 [pid 5353] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5355] 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"..., 524288 [pid 5357] <... set_robust_list resumed>) = 0 [pid 5356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5354] <... ioctl resumed>) = 0 [pid 5353] memfd_create("syzkaller", 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5354] close(3 [pid 5353] <... memfd_create resumed>) = 5 [pid 5354] <... close resumed>) = 0 [pid 5353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5354] close(4 [pid 5353] <... mmap resumed>) = 0x7f138d200000 [pid 5357] chdir("./46" [pid 5354] <... close resumed>) = 0 [pid 5353] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... openat resumed>) = 3 [pid 5357] <... chdir resumed>) = 0 [pid 5354] mkdir("./bus", 0777 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5357] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5356] <... openat resumed>) = 3 [pid 5354] <... mkdir resumed>) = 0 [pid 5357] <... prctl resumed>) = 0 [pid 5357] setpgid(0, 0 [pid 5354] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5357] <... setpgid resumed>) = 0 [ 81.218465][ T5353] loop3: detected capacity change from 0 to 1024 [ 81.258249][ T5354] loop2: detected capacity change from 0 to 1024 [pid 5357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5354] <... mount resumed>) = 0 [pid 5357] <... openat resumed>) = 3 [pid 5356] write(3, "1000", 4 [pid 5355] <... write resumed>) = 524288 [pid 5354] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5357] write(3, "1000", 4 [pid 5356] <... write resumed>) = 4 [pid 5354] <... openat resumed>) = 3 [pid 5357] <... write resumed>) = 4 [pid 5356] close(3 [pid 5354] chdir("./bus" [pid 5357] close(3 [pid 5356] <... close resumed>) = 0 [pid 5354] <... chdir resumed>) = 0 [pid 5357] <... close resumed>) = 0 [pid 5356] symlink("/dev/binderfs", "./binderfs" [pid 5354] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5357] symlink("/dev/binderfs", "./binderfs" [pid 5356] <... symlink resumed>) = 0 [pid 5354] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5357] <... symlink resumed>) = 0 [pid 5356] memfd_create("syzkaller", 0 [pid 5354] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5356] <... memfd_create resumed>) = 3 [pid 5354] <... symlink resumed>) = 0 [pid 5357] memfd_create("syzkaller", 0 [pid 5356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5354] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5357] <... memfd_create resumed>) = 3 [pid 5356] <... mmap resumed>) = 0x7f138d200000 [pid 5357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5354] <... creat resumed>) = 4 [pid 5355] munmap(0x7f138d200000, 138412032 [pid 5357] <... mmap resumed>) = 0x7f138d200000 [pid 5356] 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"..., 524288 [pid 5355] <... munmap resumed>) = 0 [pid 5354] rename("./bus", "./file2" [pid 5353] <... write resumed>) = 524288 [pid 5355] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5354] <... rename resumed>) = -1 EEXIST (File exists) [pid 5353] munmap(0x7f138d200000, 138412032 [pid 5355] ioctl(4, LOOP_SET_FD, 3 [pid 5354] memfd_create("syzkaller", 0 [pid 5353] <... munmap resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5357] 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"..., 524288 [pid 5356] <... write resumed>) = 524288 [pid 5354] <... memfd_create resumed>) = 5 [pid 5353] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] close(3 [pid 5354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5353] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5354] <... mmap resumed>) = 0x7f138d200000 [pid 5353] close(5 [pid 5354] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5353] <... close resumed>) = 0 [pid 5353] creat("./file1", 000 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5358 [pid 5353] <... creat resumed>) = 5 [pid 5353] exit_group(0) = ? ./strace-static-x86_64: Process 5358 attached [pid 5356] munmap(0x7f138d200000, 138412032 [pid 5353] +++ exited with 0 +++ [pid 5358] set_robust_list(0x555556c07660, 24 [pid 5355] <... ioctl resumed>) = 0 [pid 5354] <... write resumed>) = 524288 [pid 5358] <... set_robust_list resumed>) = 0 [pid 5356] <... munmap resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5353, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5355] close(3 [pid 5059] umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5358] chdir("./49" [pid 5356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5355] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5358] <... chdir resumed>) = 0 [pid 5356] <... openat resumed>) = 4 [pid 5355] close(4 [pid 5354] munmap(0x7f138d200000, 138412032 [pid 5059] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5358] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5356] ioctl(4, LOOP_SET_FD, 3 [pid 5355] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5355] mkdir("./bus", 0777 [pid 5354] <... munmap resumed>) = 0 [pid 5059] newfstatat(3, "", [pid 5355] <... mkdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5354] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5355] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5354] close(5 [pid 5358] <... prctl resumed>) = 0 [pid 5358] setpgid(0, 0) = 0 [pid 5358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5059] <... umount2 resumed>) = 0 [pid 5355] <... mount resumed>) = 0 [pid 5355] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5357] <... write resumed>) = 524288 [pid 5357] munmap(0x7f138d200000, 138412032 [pid 5355] chdir("./bus" [pid 5357] <... munmap resumed>) = 0 [pid 5355] <... chdir resumed>) = 0 [pid 5059] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5355] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5355] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] newfstatat(AT_FDCWD, "./48/bus", [pid 5357] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5355] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5358] write(3, "1000", 4 [pid 5357] <... openat resumed>) = 4 [pid 5059] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5358] <... write resumed>) = 4 [ 81.330158][ T5355] loop1: detected capacity change from 0 to 1024 [ 81.362550][ T5356] loop0: detected capacity change from 0 to 1024 [pid 5358] close(3) = 0 [pid 5357] ioctl(4, LOOP_SET_FD, 3 [pid 5355] <... symlink resumed>) = 0 [pid 5354] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5358] symlink("/dev/binderfs", "./binderfs" [pid 5356] <... ioctl resumed>) = 0 [pid 5355] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5354] creat("./file1", 000 [pid 5059] openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5358] <... symlink resumed>) = 0 [pid 5356] close(3) = 0 [pid 5356] close(4 [pid 5059] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", [pid 5356] <... close resumed>) = 0 [pid 5356] mkdir("./bus", 0777 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, [pid 5358] memfd_create("syzkaller", 0 [pid 5357] <... ioctl resumed>) = 0 [pid 5356] <... mkdir resumed>) = 0 [pid 5355] <... creat resumed>) = 4 [pid 5354] <... creat resumed>) = 5 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5358] <... memfd_create resumed>) = 3 [pid 5356] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5355] rename("./bus", "./file2" [pid 5354] exit_group(0 [pid 5059] getdents64(4, [pid 5355] <... rename resumed>) = -1 EEXIST (File exists) [pid 5354] <... exit_group resumed>) = ? [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5355] memfd_create("syzkaller", 0 [pid 5354] +++ exited with 0 +++ [pid 5059] close(4 [pid 5357] close(3 [pid 5356] <... mount resumed>) = 0 [pid 5355] <... memfd_create resumed>) = 5 [pid 5059] <... close resumed>) = 0 [pid 5357] <... close resumed>) = 0 [pid 5355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] rmdir("./48/bus" [pid 5357] close(4 [pid 5355] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... rmdir resumed>) = 0 [pid 5357] <... close resumed>) = 0 [pid 5355] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5357] mkdir("./bus", 0777 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5357] <... mkdir resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./48/binderfs", [pid 5357] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./48/binderfs") = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5059] rmdir("./48" [pid 5356] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] <... rmdir resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5354, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5357] <... mount resumed>) = 0 [pid 5356] <... openat resumed>) = 3 [pid 5059] mkdir("./49", 0777 [pid 5358] <... mmap resumed>) = 0x7f138d200000 [pid 5357] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5356] chdir("./bus" [pid 5355] <... write resumed>) = 524288 [pid 5059] <... mkdir resumed>) = 0 [pid 5357] <... openat resumed>) = 3 [pid 5357] chdir("./bus" [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5356] <... chdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5358] 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"..., 524288 [pid 5357] <... chdir resumed>) = 0 [pid 5356] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... openat resumed>) = 3 [pid 5058] <... openat resumed>) = 3 [pid 5356] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5355] munmap(0x7f138d200000, 138412032) = 0 [pid 5357] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5357] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5355] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5355] close(5 [pid 5356] <... symlink resumed>) = 0 [pid 5355] <... close resumed>) = 0 [pid 5058] getdents64(3, [pid 5358] <... write resumed>) = 524288 [pid 5357] <... symlink resumed>) = 0 [pid 5356] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [ 81.383449][ T5357] loop4: detected capacity change from 0 to 1024 [pid 5357] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 4 [pid 5357] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5058] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5357] memfd_create("syzkaller", 0 [pid 5358] munmap(0x7f138d200000, 138412032 [pid 5357] <... memfd_create resumed>) = 5 [pid 5356] <... creat resumed>) = 4 [pid 5356] rename("./bus", "./file2" [pid 5357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5355] creat("./file1", 000 [pid 5358] <... munmap resumed>) = 0 [pid 5357] <... mmap resumed>) = 0x7f138d200000 [pid 5358] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5356] <... rename resumed>) = -1 EEXIST (File exists) [pid 5358] <... openat resumed>) = 4 [pid 5356] memfd_create("syzkaller", 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5358] ioctl(4, LOOP_SET_FD, 3 [pid 5356] <... memfd_create resumed>) = 5 [pid 5356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5355] <... creat resumed>) = 5 [pid 5355] exit_group(0 [pid 5356] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5355] <... exit_group resumed>) = ? [pid 5357] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5355] +++ exited with 0 +++ [pid 5059] <... ioctl resumed>) = 0 [pid 5358] <... ioctl resumed>) = 0 [pid 5357] <... write resumed>) = 524288 [pid 5356] <... write resumed>) = 524288 [pid 5059] close(3 [pid 5058] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5355, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5357] munmap(0x7f138d200000, 138412032 [pid 5059] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5358] close(3) = 0 [pid 5357] <... munmap resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] newfstatat(AT_FDCWD, "./47/bus", [pid 5358] close(4 [pid 5357] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5358] <... close resumed>) = 0 [pid 5357] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5359 attached [pid 5358] mkdir("./bus", 0777 [pid 5357] close(5 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5359 [pid 5058] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5359] set_robust_list(0x555556c07660, 24 [pid 5357] <... close resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5359] <... set_robust_list resumed>) = 0 [pid 5358] <... mkdir resumed>) = 0 [pid 5356] munmap(0x7f138d200000, 138412032 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(3, "", [pid 5358] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5359] chdir("./49" [pid 5058] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] newfstatat(4, "", [pid 5356] <... munmap resumed>) = 0 [pid 5359] <... chdir resumed>) = 0 [pid 5356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, [pid 5359] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5357] creat("./file1", 000 [pid 5356] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5359] <... prctl resumed>) = 0 [pid 5356] close(5 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5359] setpgid(0, 0 [pid 5058] getdents64(4, [pid 5359] <... setpgid resumed>) = 0 [pid 5359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5359] <... openat resumed>) = 3 [pid 5357] <... creat resumed>) = 5 [pid 5058] <... close resumed>) = 0 [pid 5357] exit_group(0 [pid 5359] write(3, "1000", 4 [pid 5357] <... exit_group resumed>) = ? [pid 5058] rmdir("./47/bus" [pid 5359] <... write resumed>) = 4 [pid 5357] +++ exited with 0 +++ [pid 5356] <... close resumed>) = 0 [pid 5359] close(3) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5357, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5359] symlink("/dev/binderfs", "./binderfs" [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5058] <... rmdir resumed>) = 0 [pid 5359] <... symlink resumed>) = 0 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5359] memfd_create("syzkaller", 0 [pid 5058] umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5359] <... memfd_create resumed>) = 3 [pid 5358] <... mount resumed>) = 0 [pid 5356] creat("./file1", 000 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5358] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./47/binderfs", [pid 5358] <... openat resumed>) = 3 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] unlink("./47/binderfs" [pid 5359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5358] chdir("./bus" [pid 5356] <... creat resumed>) = 5 [pid 5060] <... openat resumed>) = 3 [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5358] <... chdir resumed>) = 0 [pid 5356] exit_group(0 [pid 5060] newfstatat(3, "", [pid 5359] <... mmap resumed>) = 0x7f138d200000 [pid 5358] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5356] <... exit_group resumed>) = ? [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, [pid 5359] 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"..., 524288 [pid 5358] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5356] +++ exited with 0 +++ [pid 5060] getdents64(3, [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5358] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5356, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5058] <... close resumed>) = 0 [pid 5057] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5058] rmdir("./47" [pid 5056] <... restart_syscall resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 81.464404][ T5358] loop5: detected capacity change from 0 to 1024 [pid 5056] umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... rmdir resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./48/bus", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5358] <... symlink resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5058] mkdir("./48", 0777 [pid 5056] newfstatat(3, "", [pid 5358] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5359] <... write resumed>) = 524288 [pid 5060] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... openat resumed>) = 4 [pid 5058] <... openat resumed>) = 3 [pid 5057] newfstatat(4, "", [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5359] munmap(0x7f138d200000, 138412032 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5359] <... munmap resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5358] <... creat resumed>) = 4 [pid 5057] getdents64(4, [pid 5056] newfstatat(AT_FDCWD, "./47/bus", [pid 5358] rename("./bus", "./file2" [pid 5060] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5359] <... openat resumed>) = 4 [pid 5358] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(4, [pid 5056] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5359] ioctl(4, LOOP_SET_FD, 3 [pid 5060] newfstatat(AT_FDCWD, "./46/bus", [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5358] memfd_create("syzkaller", 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5358] <... memfd_create resumed>) = 5 [pid 5060] umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5060] newfstatat(4, "", [pid 5056] <... openat resumed>) = 4 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(4, [pid 5056] getdents64(4, [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] close(4) = 0 [pid 5060] rmdir("./46/bus" [pid 5056] getdents64(4, [pid 5057] close(4 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5060] umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./47/bus" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./46/binderfs", [pid 5056] umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] unlink("./46/binderfs" [pid 5056] newfstatat(AT_FDCWD, "./47/binderfs", [pid 5060] <... unlink resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./47/binderfs" [pid 5060] getdents64(3, [pid 5056] <... unlink resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(3, [pid 5060] close(3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] close(3 [pid 5060] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5057] rmdir("./48/bus" [pid 5056] rmdir("./47" [pid 5060] rmdir("./46" [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5057] umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5358] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] mkdir("./48", 0777 [pid 5359] <... ioctl resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... mkdir resumed>) = 0 [pid 5359] close(3 [pid 5060] mkdir("./47", 0777 [pid 5359] <... close resumed>) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./48/binderfs", [pid 5359] close(4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5359] <... close resumed>) = 0 [pid 5358] <... write resumed>) = 524288 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] unlink("./48/binderfs" [pid 5359] mkdir("./bus", 0777 [pid 5358] munmap(0x7f138d200000, 138412032 [pid 5060] <... openat resumed>) = 3 [pid 5057] <... unlink resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5057] getdents64(3, [pid 5359] <... mkdir resumed>) = 0 [pid 5358] <... munmap resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5359] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] close(3 [pid 5358] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./48" [pid 5358] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5358] close(5) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] mkdir("./49", 0777 [pid 5358] creat("./file1", 000 [pid 5359] <... mount resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [ 81.544137][ T5359] loop3: detected capacity change from 0 to 1024 [pid 5359] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5359] chdir("./bus" [pid 5058] close(3 [pid 5057] <... openat resumed>) = 3 [pid 5359] <... chdir resumed>) = 0 [pid 5359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5359] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5359] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"./strace-static-x86_64: Process 5360 attached ) = 0 [pid 5358] <... creat resumed>) = 5 [pid 5060] close(3 [pid 5360] set_robust_list(0x555556c07660, 24 [pid 5358] exit_group(0 [pid 5060] <... close resumed>) = 0 [pid 5056] close(3 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... close resumed>) = 0 [pid 5360] <... set_robust_list resumed>) = 0 [pid 5358] <... exit_group resumed>) = ? [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5360] chdir("./48" [pid 5358] +++ exited with 0 +++ [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5360 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5358, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5359] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000./strace-static-x86_64: Process 5361 attached [pid 5061] umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5360] <... chdir resumed>) = 0 [pid 5061] getdents64(3, [pid 5360] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5360] <... prctl resumed>) = 0 [pid 5061] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5362 attached [pid 5360] setpgid(0, 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5361 [pid 5360] <... setpgid resumed>) = 0 [pid 5360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5362] set_robust_list(0x555556c07660, 24 [pid 5361] set_robust_list(0x555556c07660, 24 [pid 5360] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5362 [pid 5362] <... set_robust_list resumed>) = 0 [pid 5360] write(3, "1000", 4 [pid 5362] chdir("./48" [pid 5361] <... set_robust_list resumed>) = 0 [pid 5360] <... write resumed>) = 4 [pid 5362] <... chdir resumed>) = 0 [pid 5360] close(3 [pid 5362] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5360] <... close resumed>) = 0 [pid 5362] <... prctl resumed>) = 0 [pid 5360] symlink("/dev/binderfs", "./binderfs" [pid 5361] chdir("./47" [pid 5360] <... symlink resumed>) = 0 [pid 5359] <... creat resumed>) = 4 [pid 5362] setpgid(0, 0 [pid 5360] memfd_create("syzkaller", 0 [pid 5361] <... chdir resumed>) = 0 [pid 5361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5362] <... setpgid resumed>) = 0 [pid 5360] <... memfd_create resumed>) = 3 [pid 5362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5361] setpgid(0, 0 [pid 5360] <... mmap resumed>) = 0x7f138d200000 [pid 5359] rename("./bus", "./file2" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5362] <... openat resumed>) = 3 [pid 5061] newfstatat(AT_FDCWD, "./49/bus", [pid 5362] write(3, "1000", 4 [pid 5361] <... setpgid resumed>) = 0 [pid 5360] 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"..., 524288 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5359] <... rename resumed>) = -1 EEXIST (File exists) [pid 5362] <... write resumed>) = 4 [pid 5362] close(3) = 0 [pid 5361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5359] memfd_create("syzkaller", 0 [pid 5362] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5362] memfd_create("syzkaller", 0) = 3 [pid 5061] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./49/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... openat resumed>) = 4 [pid 5362] <... mmap resumed>) = 0x7f138d200000 [pid 5061] newfstatat(4, "", [pid 5362] 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"..., 524288 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] getdents64(4, [pid 5361] <... openat resumed>) = 3 [pid 5359] <... memfd_create resumed>) = 5 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./49/bus" [pid 5359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5361] write(3, "1000", 4 [pid 5359] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... rmdir resumed>) = 0 [pid 5361] <... write resumed>) = 4 [pid 5061] umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./49/binderfs", [pid 5361] close(3 [pid 5360] <... write resumed>) = 524288 [pid 5359] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5361] <... close resumed>) = 0 [pid 5362] <... write resumed>) = 524288 [pid 5361] symlink("/dev/binderfs", "./binderfs" [pid 5061] unlink("./49/binderfs") = 0 [pid 5061] getdents64(3, [pid 5360] munmap(0x7f138d200000, 138412032 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5360] <... munmap resumed>) = 0 [pid 5061] close(3 [pid 5360] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... close resumed>) = 0 [pid 5360] <... openat resumed>) = 4 [pid 5061] rmdir("./49" [pid 5360] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... rmdir resumed>) = 0 [pid 5061] mkdir("./50", 0777) = 0 [pid 5361] <... symlink resumed>) = 0 [pid 5362] munmap(0x7f138d200000, 138412032 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5362] <... munmap resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5362] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5361] memfd_create("syzkaller", 0 [pid 5359] <... write resumed>) = 524288 [pid 5057] <... ioctl resumed>) = 0 [pid 5361] <... memfd_create resumed>) = 3 [pid 5361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5359] munmap(0x7f138d200000, 138412032 [pid 5361] <... mmap resumed>) = 0x7f138d200000 [pid 5359] <... munmap resumed>) = 0 [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... ioctl resumed>) = 0 [pid 5362] <... openat resumed>) = 4 [pid 5362] ioctl(4, LOOP_SET_FD, 3 [pid 5361] 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"..., 524288 [pid 5360] <... ioctl resumed>) = 0 [pid 5359] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5359] close(5 [pid 5360] close(3 [pid 5359] <... close resumed>) = 0 [pid 5360] <... close resumed>) = 0 ./strace-static-x86_64: Process 5363 attached [pid 5362] <... ioctl resumed>) = 0 [pid 5361] <... write resumed>) = 524288 [pid 5360] close(4 [pid 5061] close(3 [pid 5362] close(3 [pid 5360] <... close resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5363 [pid 5363] set_robust_list(0x555556c07660, 24 [pid 5360] mkdir("./bus", 0777 [pid 5359] creat("./file1", 000 [pid 5363] <... set_robust_list resumed>) = 0 [pid 5362] <... close resumed>) = 0 [pid 5360] <... mkdir resumed>) = 0 [pid 5359] <... creat resumed>) = 5 [pid 5061] <... close resumed>) = 0 [pid 5360] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5359] exit_group(0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5359] <... exit_group resumed>) = ? [pid 5359] +++ exited with 0 +++ ./strace-static-x86_64: Process 5364 attached [pid 5364] set_robust_list(0x555556c07660, 24) = 0 [pid 5364] chdir("./50") = 0 [pid 5364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5364] setpgid(0, 0) = 0 [pid 5364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5363] chdir("./49" [pid 5362] close(4 [pid 5361] munmap(0x7f138d200000, 138412032 [pid 5360] <... mount resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5364 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5359, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5360] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5364] write(3, "1000", 4 [pid 5360] chdir("./bus" [pid 5364] <... write resumed>) = 4 [ 81.662998][ T5360] loop2: detected capacity change from 0 to 1024 [ 81.680250][ T5362] loop0: detected capacity change from 0 to 1024 [pid 5363] <... chdir resumed>) = 0 [pid 5362] <... close resumed>) = 0 [pid 5364] close(3 [pid 5363] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5362] mkdir("./bus", 0777 [pid 5360] <... chdir resumed>) = 0 [pid 5364] <... close resumed>) = 0 [pid 5363] <... prctl resumed>) = 0 [pid 5362] <... mkdir resumed>) = 0 [pid 5361] <... munmap resumed>) = 0 [pid 5360] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5364] symlink("/dev/binderfs", "./binderfs" [pid 5363] setpgid(0, 0 [pid 5362] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5361] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5364] <... symlink resumed>) = 0 [pid 5361] <... openat resumed>) = 4 [pid 5361] ioctl(4, LOOP_SET_FD, 3 [pid 5363] <... setpgid resumed>) = 0 [pid 5059] umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5362] <... mount resumed>) = 0 [pid 5360] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5362] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5360] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5364] memfd_create("syzkaller", 0 [pid 5363] <... openat resumed>) = 3 [pid 5362] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5364] <... memfd_create resumed>) = 3 [pid 5364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5364] 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"..., 524288 [pid 5363] write(3, "1000", 4 [pid 5362] chdir("./bus" [pid 5360] <... symlink resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5362] <... chdir resumed>) = 0 [pid 5360] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] newfstatat(3, "", [pid 5363] <... write resumed>) = 4 [pid 5362] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5362] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5363] close(3 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5363] <... close resumed>) = 0 [pid 5059] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5363] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5362] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5363] memfd_create("syzkaller", 0 [pid 5362] <... symlink resumed>) = 0 [pid 5360] <... creat resumed>) = 4 [pid 5362] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5361] <... ioctl resumed>) = 0 [pid 5364] <... write resumed>) = 524288 [pid 5363] <... memfd_create resumed>) = 3 [pid 5362] <... creat resumed>) = 4 [pid 5360] rename("./bus", "./file2" [pid 5059] <... umount2 resumed>) = 0 [pid 5363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5362] rename("./bus", "./file2" [pid 5059] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5364] munmap(0x7f138d200000, 138412032 [pid 5361] close(3 [pid 5364] <... munmap resumed>) = 0 [pid 5363] <... mmap resumed>) = 0x7f138d200000 [pid 5362] <... rename resumed>) = -1 EEXIST (File exists) [pid 5360] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5362] memfd_create("syzkaller", 0 [pid 5361] <... close resumed>) = 0 [pid 5360] memfd_create("syzkaller", 0 [pid 5059] newfstatat(AT_FDCWD, "./49/bus", [pid 5362] <... memfd_create resumed>) = 5 [pid 5361] close(4 [pid 5364] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5361] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5363] 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"..., 524288 [pid 5360] <... memfd_create resumed>) = 5 [ 81.737791][ T5361] loop4: detected capacity change from 0 to 1024 [pid 5363] <... write resumed>) = 524288 [pid 5362] <... mmap resumed>) = 0x7f138d200000 [pid 5360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5364] <... openat resumed>) = 4 [pid 5361] mkdir("./bus", 0777 [pid 5364] ioctl(4, LOOP_SET_FD, 3 [pid 5361] <... mkdir resumed>) = 0 [pid 5360] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5361] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] openat(AT_FDCWD, "./49/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, [pid 5363] munmap(0x7f138d200000, 138412032 [pid 5362] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5364] <... ioctl resumed>) = 0 [pid 5059] getdents64(4, [pid 5364] close(3) = 0 [pid 5363] <... munmap resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5364] close(4 [pid 5363] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5362] <... write resumed>) = 524288 [pid 5361] <... mount resumed>) = 0 [pid 5360] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] close(4 [pid 5361] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5364] <... close resumed>) = 0 [pid 5361] <... openat resumed>) = 3 [pid 5364] mkdir("./bus", 0777 [pid 5361] chdir("./bus" [pid 5364] <... mkdir resumed>) = 0 [pid 5361] <... chdir resumed>) = 0 [pid 5361] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5361] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... close resumed>) = 0 [pid 5361] <... symlink resumed>) = 0 [pid 5361] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 4 [pid 5364] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5361] rename("./bus", "./file2" [pid 5360] <... write resumed>) = 524288 [pid 5059] rmdir("./49/bus" [pid 5363] <... openat resumed>) = 4 [pid 5362] munmap(0x7f138d200000, 138412032 [pid 5361] <... rename resumed>) = -1 EEXIST (File exists) [pid 5360] munmap(0x7f138d200000, 138412032 [pid 5059] <... rmdir resumed>) = 0 [pid 5361] memfd_create("syzkaller", 0 [ 81.785152][ T5364] loop5: detected capacity change from 0 to 1024 [pid 5059] umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5364] <... mount resumed>) = 0 [pid 5363] ioctl(4, LOOP_SET_FD, 3 [pid 5362] <... munmap resumed>) = 0 [pid 5361] <... memfd_create resumed>) = 5 [pid 5360] <... munmap resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5364] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5362] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5364] <... openat resumed>) = 3 [pid 5361] <... mmap resumed>) = 0x7f138d200000 [pid 5364] chdir("./bus" [pid 5361] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5364] <... chdir resumed>) = 0 [pid 5364] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5364] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5364] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5363] <... ioctl resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./49/binderfs", [pid 5363] close(3 [pid 5362] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5360] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5363] <... close resumed>) = 0 [pid 5362] close(5 [pid 5360] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] unlink("./49/binderfs" [pid 5363] close(4 [pid 5362] <... close resumed>) = 0 [pid 5361] <... write resumed>) = 524288 [pid 5360] close(5 [pid 5059] <... unlink resumed>) = 0 [pid 5363] <... close resumed>) = 0 [pid 5362] creat("./file1", 000 [pid 5361] munmap(0x7f138d200000, 138412032 [pid 5364] <... creat resumed>) = 4 [pid 5360] <... close resumed>) = 0 [pid 5059] getdents64(3, [pid 5364] rename("./bus", "./file2" [pid 5363] mkdir("./bus", 0777 [pid 5360] creat("./file1", 000 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5364] <... rename resumed>) = -1 EEXIST (File exists) [pid 5363] <... mkdir resumed>) = 0 [pid 5362] <... creat resumed>) = 5 [pid 5361] <... munmap resumed>) = 0 [pid 5059] close(3 [pid 5364] memfd_create("syzkaller", 0 [pid 5362] exit_group(0 [pid 5059] <... close resumed>) = 0 [pid 5362] <... exit_group resumed>) = ? [pid 5059] rmdir("./49" [pid 5364] <... memfd_create resumed>) = 5 [pid 5362] +++ exited with 0 +++ [pid 5361] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... rmdir resumed>) = 0 [pid 5364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5361] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5360] <... creat resumed>) = 5 [pid 5059] mkdir("./50", 0777 [pid 5364] <... mmap resumed>) = 0x7f138d200000 [pid 5363] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5361] close(5 [pid 5360] exit_group(0 [pid 5059] <... mkdir resumed>) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5362, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5364] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5360] <... exit_group resumed>) = ? [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5360] +++ exited with 0 +++ [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5360, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5056] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5361] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5361] creat("./file1", 000 [pid 5056] newfstatat(3, "", [pid 5058] umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5058] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] <... openat resumed>) = 3 [pid 5056] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, [pid 5364] <... write resumed>) = 524288 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [ 81.826976][ T5363] loop1: detected capacity change from 0 to 1024 [pid 5058] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5364] munmap(0x7f138d200000, 138412032 [pid 5363] <... mount resumed>) = 0 [pid 5361] <... creat resumed>) = 5 [pid 5058] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5363] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5361] exit_group(0 [pid 5056] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5364] <... munmap resumed>) = 0 [pid 5361] <... exit_group resumed>) = ? [pid 5058] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5363] chdir("./bus" [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5364] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5363] <... chdir resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./48/bus", [pid 5363] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5364] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5363] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5364] close(5 [pid 5363] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] newfstatat(AT_FDCWD, "./48/bus", [pid 5056] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5363] <... symlink resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5363] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5364] <... close resumed>) = 0 [pid 5361] +++ exited with 0 +++ [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] newfstatat(4, "", [pid 5364] creat("./file1", 000 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5361, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5363] <... creat resumed>) = 4 [pid 5058] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5363] rename("./bus", "./file2" [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5364] <... creat resumed>) = 5 [pid 5060] umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] getdents64(4, [pid 5364] exit_group(0 [pid 5363] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 4 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5364] <... exit_group resumed>) = ? [pid 5060] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(4, "", [pid 5056] getdents64(4, [pid 5363] memfd_create("syzkaller", 0 [pid 5059] close(3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5363] <... memfd_create resumed>) = 5 [pid 5059] <... close resumed>) = 0 [pid 5056] close(4 [pid 5363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... close resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] rmdir("./48/bus" [pid 5363] <... mmap resumed>) = 0x7f138d200000 [pid 5060] newfstatat(3, "", [pid 5058] getdents64(4, [pid 5056] <... rmdir resumed>) = 0 [pid 5056] umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./48/binderfs" [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5365 ./strace-static-x86_64: Process 5365 attached [pid 5364] +++ exited with 0 +++ [pid 5363] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5056] <... unlink resumed>) = 0 [pid 5365] set_robust_list(0x555556c07660, 24 [pid 5363] <... write resumed>) = 524288 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5364, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5365] <... set_robust_list resumed>) = 0 [pid 5365] chdir("./50" [pid 5060] getdents64(3, [pid 5058] close(4 [pid 5056] getdents64(3, [pid 5365] <... chdir resumed>) = 0 [pid 5061] umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5365] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] close(3 [pid 5365] <... prctl resumed>) = 0 [pid 5363] munmap(0x7f138d200000, 138412032 [pid 5061] openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] rmdir("./48/bus" [pid 5056] <... close resumed>) = 0 [pid 5365] setpgid(0, 0 [pid 5363] <... munmap resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5363] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] newfstatat(3, "", [pid 5056] rmdir("./48" [pid 5365] <... setpgid resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5363] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] getdents64(3, [pid 5363] close(5 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5365] <... openat resumed>) = 3 [pid 5061] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5363] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] mkdir("./49", 0777 [pid 5060] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5365] write(3, "1000", 4 [pid 5363] creat("./file1", 000 [pid 5058] newfstatat(AT_FDCWD, "./48/binderfs", [pid 5365] <... write resumed>) = 4 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... mkdir resumed>) = 0 [pid 5365] close(3 [pid 5061] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] newfstatat(AT_FDCWD, "./47/bus", [pid 5365] <... close resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5365] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5365] <... symlink resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./50/bus", [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./48/binderfs" [pid 5365] memfd_create("syzkaller", 0 [pid 5061] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... openat resumed>) = 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 4 [pid 5058] <... unlink resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./50/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] newfstatat(4, "", [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5365] <... memfd_create resumed>) = 3 [pid 5061] <... openat resumed>) = 4 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] getdents64(4, [pid 5365] <... mmap resumed>) = 0x7f138d200000 [pid 5363] <... creat resumed>) = 5 [pid 5061] newfstatat(4, "", [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(3, [pid 5363] exit_group(0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5363] <... exit_group resumed>) = ? [pid 5061] getdents64(4, [pid 5060] getdents64(4, [pid 5058] close(3 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5365] 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"..., 524288 [pid 5363] +++ exited with 0 +++ [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] close(4 [pid 5058] <... close resumed>) = 0 [pid 5061] getdents64(4, [pid 5060] <... close resumed>) = 0 [pid 5058] rmdir("./48" [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] rmdir("./47/bus" [pid 5058] <... rmdir resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5363, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5061] close(4 [pid 5057] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5057] umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] mkdir("./49", 0777 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... close resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] rmdir("./50/bus" [pid 5060] umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5365] <... write resumed>) = 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./47/binderfs", [pid 5057] <... openat resumed>) = 3 [pid 5365] munmap(0x7f138d200000, 138412032 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] newfstatat(3, "", [pid 5061] umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] unlink("./47/binderfs" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... unlink resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5057] getdents64(3, [pid 5365] <... munmap resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./50/binderfs", [pid 5060] getdents64(3, [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5365] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5365] <... openat resumed>) = 4 [pid 5061] unlink("./50/binderfs" [pid 5060] close(3 [pid 5057] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5365] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... unlink resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5057] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5365] <... ioctl resumed>) = 0 [pid 5061] getdents64(3, [pid 5060] rmdir("./47" [pid 5365] close(3) = 0 [pid 5365] close(4 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] close(3 [pid 5057] newfstatat(AT_FDCWD, "./49/bus", [pid 5365] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5365] mkdir("./bus", 0777) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5365] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] rmdir("./50" [pid 5060] mkdir("./48", 0777 [pid 5057] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... ioctl resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5365] <... mount resumed>) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(3 [pid 5057] openat(AT_FDCWD, "./49/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... close resumed>) = 0 [pid 5365] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] mkdir("./51", 0777 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5366 attached [pid 5365] <... openat resumed>) = 3 [pid 5061] <... mkdir resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5365] chdir("./bus" [pid 5057] getdents64(4, [pid 5365] <... chdir resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [ 81.988045][ T5365] loop3: detected capacity change from 0 to 1024 [pid 5366] set_robust_list(0x555556c07660, 24) = 0 [pid 5365] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... openat resumed>) = 3 [pid 5057] getdents64(4, [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5366 [pid 5366] chdir("./49" [pid 5365] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5366] <... chdir resumed>) = 0 [pid 5366] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5365] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5057] close(4 [pid 5366] <... prctl resumed>) = 0 [pid 5366] setpgid(0, 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5057] <... close resumed>) = 0 [pid 5366] <... setpgid resumed>) = 0 [pid 5057] rmdir("./49/bus" [pid 5366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] <... rmdir resumed>) = 0 [pid 5057] umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5366] <... openat resumed>) = 3 [pid 5366] write(3, "1000", 4) = 4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5366] close(3 [pid 5057] newfstatat(AT_FDCWD, "./49/binderfs", [pid 5366] <... close resumed>) = 0 [pid 5366] symlink("/dev/binderfs", "./binderfs" [pid 5058] close(3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5366] <... symlink resumed>) = 0 [pid 5365] <... symlink resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] unlink("./49/binderfs" [pid 5366] memfd_create("syzkaller", 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 5367 attached [pid 5366] <... memfd_create resumed>) = 3 [pid 5057] getdents64(3, [pid 5367] set_robust_list(0x555556c07660, 24 [pid 5366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5365] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5367] <... set_robust_list resumed>) = 0 [pid 5366] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5367 [pid 5057] close(3 [pid 5367] chdir("./49" [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./49") = 0 [pid 5057] mkdir("./50", 0777 [pid 5367] <... chdir resumed>) = 0 [pid 5366] 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"..., 524288 [pid 5057] <... mkdir resumed>) = 0 [pid 5367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5366] <... write resumed>) = 524288 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5367] setpgid(0, 0 [pid 5366] munmap(0x7f138d200000, 138412032 [pid 5367] <... setpgid resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5366] <... munmap resumed>) = 0 [pid 5367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5366] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5367] <... openat resumed>) = 3 [pid 5365] <... creat resumed>) = 4 [pid 5366] <... openat resumed>) = 4 [pid 5367] write(3, "1000", 4 [pid 5365] rename("./bus", "./file2" [pid 5367] <... write resumed>) = 4 [pid 5366] ioctl(4, LOOP_SET_FD, 3 [pid 5367] close(3) = 0 [pid 5365] <... rename resumed>) = -1 EEXIST (File exists) [pid 5365] memfd_create("syzkaller", 0) = 5 [pid 5365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5367] symlink("/dev/binderfs", "./binderfs" [pid 5366] <... ioctl resumed>) = 0 [pid 5367] <... symlink resumed>) = 0 [pid 5367] memfd_create("syzkaller", 0 [pid 5365] <... mmap resumed>) = 0x7f138d200000 [pid 5367] <... memfd_create resumed>) = 3 [pid 5367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5367] 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"..., 524288 [pid 5060] <... ioctl resumed>) = 0 [pid 5365] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5366] close(3) = 0 [pid 5366] close(4 [pid 5367] <... write resumed>) = 524288 [pid 5366] <... close resumed>) = 0 [pid 5365] <... write resumed>) = 524288 [pid 5061] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5366] mkdir("./bus", 0777 [pid 5367] munmap(0x7f138d200000, 138412032) = 0 [pid 5366] <... mkdir resumed>) = 0 [pid 5061] close(3 [pid 5060] <... close resumed>) = 0 [ 82.064374][ T5366] loop0: detected capacity change from 0 to 1024 [pid 5366] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5367] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5367] ioctl(4, LOOP_SET_FD, 3 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5368 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5369 ./strace-static-x86_64: Process 5369 attached [pid 5369] set_robust_list(0x555556c07660, 24) = 0 [pid 5369] chdir("./51") = 0 [pid 5369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5369] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5368 attached [pid 5369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5365] munmap(0x7f138d200000, 138412032 [pid 5057] <... ioctl resumed>) = 0 [pid 5368] set_robust_list(0x555556c07660, 24 [pid 5369] <... openat resumed>) = 3 [pid 5368] <... set_robust_list resumed>) = 0 [pid 5369] write(3, "1000", 4 [pid 5365] <... munmap resumed>) = 0 [pid 5368] chdir("./48" [pid 5369] <... write resumed>) = 4 [pid 5368] <... chdir resumed>) = 0 [pid 5369] close(3 [pid 5367] <... ioctl resumed>) = 0 [pid 5368] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5369] <... close resumed>) = 0 [pid 5367] close(3 [pid 5365] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5368] <... prctl resumed>) = 0 [pid 5369] symlink("/dev/binderfs", "./binderfs" [pid 5367] <... close resumed>) = 0 [pid 5368] setpgid(0, 0 [pid 5369] <... symlink resumed>) = 0 [pid 5367] close(4 [pid 5365] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5368] <... setpgid resumed>) = 0 [pid 5367] <... close resumed>) = 0 [pid 5367] mkdir("./bus", 0777 [pid 5057] close(3 [pid 5368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5367] <... mkdir resumed>) = 0 [pid 5365] close(5 [pid 5369] memfd_create("syzkaller", 0 [pid 5057] <... close resumed>) = 0 [pid 5368] <... openat resumed>) = 3 [pid 5369] <... memfd_create resumed>) = 3 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5368] write(3, "1000", 4 [pid 5369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5367] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5368] <... write resumed>) = 4 [pid 5369] <... mmap resumed>) = 0x7f138d200000 [pid 5368] close(3 [pid 5369] 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"..., 524288 [pid 5368] <... close resumed>) = 0 ./strace-static-x86_64: Process 5370 attached [pid 5368] symlink("/dev/binderfs", "./binderfs" [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5370 [pid 5370] set_robust_list(0x555556c07660, 24 [pid 5368] <... symlink resumed>) = 0 [pid 5370] <... set_robust_list resumed>) = 0 [pid 5368] memfd_create("syzkaller", 0 [pid 5370] chdir("./50" [pid 5368] <... memfd_create resumed>) = 3 [pid 5367] <... mount resumed>) = 0 [pid 5368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5365] <... close resumed>) = 0 [pid 5368] <... mmap resumed>) = 0x7f138d200000 [pid 5370] <... chdir resumed>) = 0 [pid 5368] 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"..., 524288 [pid 5370] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5367] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5370] <... prctl resumed>) = 0 [pid 5369] <... write resumed>) = 524288 [pid 5367] <... openat resumed>) = 3 [pid 5370] setpgid(0, 0) = 0 [pid 5367] chdir("./bus" [pid 5366] <... mount resumed>) = 0 [pid 5365] creat("./file1", 000 [pid 5367] <... chdir resumed>) = 0 [pid 5367] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5367] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5370] <... openat resumed>) = 3 [pid 5370] write(3, "1000", 4 [pid 5368] <... write resumed>) = 524288 [pid 5366] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5370] <... write resumed>) = 4 [pid 5367] <... symlink resumed>) = 0 [pid 5366] <... openat resumed>) = 3 [pid 5370] close(3 [pid 5367] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5366] chdir("./bus") = 0 [pid 5366] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5370] <... close resumed>) = 0 [pid 5369] munmap(0x7f138d200000, 138412032 [pid 5366] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5365] <... creat resumed>) = 5 [pid 5366] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5370] symlink("/dev/binderfs", "./binderfs" [pid 5369] <... munmap resumed>) = 0 [pid 5370] <... symlink resumed>) = 0 [pid 5369] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5367] <... creat resumed>) = 4 [ 82.118831][ T5367] loop2: detected capacity change from 0 to 1024 [pid 5365] exit_group(0 [pid 5370] memfd_create("syzkaller", 0 [pid 5369] <... openat resumed>) = 4 [pid 5367] rename("./bus", "./file2" [pid 5366] <... symlink resumed>) = 0 [pid 5365] <... exit_group resumed>) = ? [pid 5369] ioctl(4, LOOP_SET_FD, 3 [pid 5366] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5365] +++ exited with 0 +++ [pid 5370] <... memfd_create resumed>) = 3 [pid 5367] <... rename resumed>) = -1 EEXIST (File exists) [pid 5370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5367] memfd_create("syzkaller", 0 [pid 5370] <... mmap resumed>) = 0x7f138d200000 [pid 5368] munmap(0x7f138d200000, 138412032 [pid 5367] <... memfd_create resumed>) = 5 [pid 5368] <... munmap resumed>) = 0 [pid 5367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5368] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5367] <... mmap resumed>) = 0x7f138d200000 [pid 5368] <... openat resumed>) = 4 [pid 5367] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5370] 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"..., 524288 [pid 5368] ioctl(4, LOOP_SET_FD, 3 [pid 5366] <... creat resumed>) = 4 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5365, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5366] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5059] umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5366] memfd_create("syzkaller", 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5366] <... memfd_create resumed>) = 5 [pid 5059] openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5369] <... ioctl resumed>) = 0 [pid 5366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5366] <... mmap resumed>) = 0x7f138d200000 [pid 5059] getdents64(3, [pid 5369] close(3) = 0 [pid 5369] close(4 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5370] <... write resumed>) = 524288 [pid 5368] <... ioctl resumed>) = 0 [pid 5369] <... close resumed>) = 0 [pid 5366] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5369] mkdir("./bus", 0777) = 0 [pid 5370] munmap(0x7f138d200000, 138412032 [pid 5368] close(3 [pid 5370] <... munmap resumed>) = 0 [pid 5369] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] <... umount2 resumed>) = 0 [ 82.179563][ T5369] loop5: detected capacity change from 0 to 1024 [ 82.194452][ T5368] loop4: detected capacity change from 0 to 1024 [pid 5370] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5368] <... close resumed>) = 0 [pid 5367] <... write resumed>) = 524288 [pid 5059] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./50/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5370] <... openat resumed>) = 4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./50/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, [pid 5370] ioctl(4, LOOP_SET_FD, 3 [pid 5368] close(4 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./50/bus") = 0 [pid 5059] umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./50/binderfs") = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5059] rmdir("./50") = 0 [pid 5370] <... ioctl resumed>) = 0 [pid 5368] <... close resumed>) = 0 [pid 5367] munmap(0x7f138d200000, 138412032 [pid 5366] <... write resumed>) = 524288 [pid 5059] mkdir("./51", 0777 [pid 5367] <... munmap resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5370] close(3 [pid 5368] mkdir("./bus", 0777 [pid 5369] <... mount resumed>) = 0 [pid 5367] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5366] munmap(0x7f138d200000, 138412032 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5370] <... close resumed>) = 0 [pid 5368] <... mkdir resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5370] close(4 [pid 5366] <... munmap resumed>) = 0 [pid 5367] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5370] <... close resumed>) = 0 [pid 5368] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5369] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5367] close(5 [pid 5366] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5370] mkdir("./bus", 0777) = 0 [pid 5370] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5366] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5366] close(5) = 0 [pid 5369] <... openat resumed>) = 3 [pid 5369] chdir("./bus") = 0 [pid 5369] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5369] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5367] <... close resumed>) = 0 [pid 5370] <... mount resumed>) = 0 [pid 5367] creat("./file1", 000 [pid 5366] creat("./file1", 000 [pid 5370] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5368] <... mount resumed>) = 0 [pid 5369] <... symlink resumed>) = 0 [pid 5368] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5370] <... openat resumed>) = 3 [pid 5368] <... openat resumed>) = 3 [pid 5369] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5370] chdir("./bus") = 0 [pid 5370] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5370] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5370] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5368] chdir("./bus") = 0 [pid 5367] <... creat resumed>) = 5 [pid 5368] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5370] <... creat resumed>) = 4 [pid 5368] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5367] exit_group(0 [pid 5366] <... creat resumed>) = 5 [pid 5370] rename("./bus", "./file2" [pid 5368] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5366] exit_group(0 [pid 5367] <... exit_group resumed>) = ? [pid 5370] <... rename resumed>) = -1 EEXIST (File exists) [pid 5369] <... creat resumed>) = 4 [pid 5366] <... exit_group resumed>) = ? [ 82.228609][ T5370] loop1: detected capacity change from 0 to 1024 [pid 5370] memfd_create("syzkaller", 0 [pid 5368] <... symlink resumed>) = 0 [pid 5369] rename("./bus", "./file2" [pid 5367] +++ exited with 0 +++ [pid 5366] +++ exited with 0 +++ [pid 5370] <... memfd_create resumed>) = 5 [pid 5368] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5367, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5366, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5370] <... mmap resumed>) = 0x7f138d200000 [pid 5369] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5369] memfd_create("syzkaller", 0 [pid 5058] openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5369] <... memfd_create resumed>) = 5 [pid 5058] newfstatat(3, "", [pid 5056] newfstatat(3, "", [pid 5369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5369] <... mmap resumed>) = 0x7f138d200000 [pid 5369] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5368] <... creat resumed>) = 4 [pid 5368] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5370] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5368] memfd_create("syzkaller", 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5368] <... memfd_create resumed>) = 5 [pid 5368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5368] <... mmap resumed>) = 0x7f138d200000 [pid 5059] close(3 [pid 5370] <... write resumed>) = 524288 [pid 5369] <... write resumed>) = 524288 [pid 5059] <... close resumed>) = 0 [pid 5058] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = 0 [pid 5056] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./49/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./49/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5370] munmap(0x7f138d200000, 138412032 [pid 5369] munmap(0x7f138d200000, 138412032 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] newfstatat(AT_FDCWD, "./49/bus", [pid 5056] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./49/bus") = 0 [pid 5056] umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./49/binderfs") = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5058] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./49" [pid 5369] <... munmap resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./49/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] mkdir("./50", 0777 [pid 5370] <... munmap resumed>) = 0 [pid 5369] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5371 [pid 5058] <... openat resumed>) = 4 [pid 5056] <... mkdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] newfstatat(4, "", [pid 5056] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5371 attached [pid 5371] set_robust_list(0x555556c07660, 24) = 0 [pid 5371] chdir("./51" [pid 5368] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5371] <... chdir resumed>) = 0 [pid 5369] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5369] close(5 [pid 5371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5371] setpgid(0, 0) = 0 [pid 5371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5371] write(3, "1000", 4) = 4 [pid 5371] close(3) = 0 [pid 5371] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5371] memfd_create("syzkaller", 0 [pid 5370] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5369] <... close resumed>) = 0 [pid 5371] <... memfd_create resumed>) = 3 [pid 5370] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5370] close(5 [pid 5371] <... mmap resumed>) = 0x7f138d200000 [pid 5370] <... close resumed>) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5371] 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"..., 524288 [pid 5368] <... write resumed>) = 524288 [pid 5369] creat("./file1", 000 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5368] munmap(0x7f138d200000, 138412032 [pid 5058] rmdir("./49/bus") = 0 [pid 5058] umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5370] creat("./file1", 000 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5368] <... munmap resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./49/binderfs", [pid 5368] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5369] <... creat resumed>) = 5 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5369] exit_group(0 [pid 5058] unlink("./49/binderfs" [pid 5371] <... write resumed>) = 524288 [pid 5370] <... creat resumed>) = 5 [pid 5368] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5369] <... exit_group resumed>) = ? [pid 5058] <... unlink resumed>) = 0 [pid 5370] exit_group(0) = ? [pid 5370] +++ exited with 0 +++ [pid 5369] +++ exited with 0 +++ [pid 5368] close(5 [pid 5058] getdents64(3, [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5370, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5371] munmap(0x7f138d200000, 138412032) = 0 [pid 5371] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5368] <... close resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5369, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5371] <... openat resumed>) = 4 [pid 5371] ioctl(4, LOOP_SET_FD, 3 [pid 5368] creat("./file1", 000 [pid 5061] umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5056] close(3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... close resumed>) = 0 [pid 5057] umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... openat resumed>) = 3 [pid 5058] rmdir("./49" [pid 5057] openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5372 attached [pid 5372] set_robust_list(0x555556c07660, 24 [pid 5057] <... openat resumed>) = 3 [pid 5372] <... set_robust_list resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5372 [pid 5372] chdir("./50" [pid 5058] <... rmdir resumed>) = 0 [pid 5057] newfstatat(3, "", [pid 5372] <... chdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] mkdir("./50", 0777 [pid 5057] getdents64(3, [pid 5372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5372] setpgid(0, 0) = 0 [pid 5372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... mkdir resumed>) = 0 [pid 5372] <... openat resumed>) = 3 [pid 5061] newfstatat(3, "", [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5372] write(3, "1000", 4) = 4 [pid 5057] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5372] close(3) = 0 [pid 5372] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5368] <... creat resumed>) = 5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5368] exit_group(0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5368] <... exit_group resumed>) = ? [pid 5061] getdents64(3, [pid 5372] memfd_create("syzkaller", 0) = 3 [pid 5371] <... ioctl resumed>) = 0 [pid 5372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5371] close(3) = 0 [pid 5371] close(4 [pid 5368] +++ exited with 0 +++ [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... umount2 resumed>) = 0 [pid 5371] <... close resumed>) = 0 [pid 5061] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5368, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5060] umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", [pid 5372] 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"..., 524288) = 524288 [pid 5057] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(AT_FDCWD, "./50/bus", [pid 5371] mkdir("./bus", 0777 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5371] <... mkdir resumed>) = 0 [pid 5372] munmap(0x7f138d200000, 138412032) = 0 [pid 5057] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./50/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5371] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... umount2 resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5372] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5372] <... openat resumed>) = 4 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [ 82.370402][ T5371] loop3: detected capacity change from 0 to 1024 [pid 5061] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] rmdir("./50/bus" [pid 5372] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./51/bus", [pid 5057] umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(AT_FDCWD, "./50/binderfs", [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] openat(AT_FDCWD, "./51/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] unlink("./50/binderfs" [pid 5371] <... mount resumed>) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5060] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... unlink resumed>) = 0 [pid 5371] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(3, [pid 5371] <... openat resumed>) = 3 [pid 5060] newfstatat(AT_FDCWD, "./48/bus", [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3 [pid 5371] chdir("./bus" [pid 5061] newfstatat(4, "", [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5371] <... chdir resumed>) = 0 [pid 5060] umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5371] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... close resumed>) = 0 [pid 5371] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5371] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5057] rmdir("./50" [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] newfstatat(4, "", [pid 5057] <... rmdir resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, [pid 5060] getdents64(4, [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] close(4 [pid 5060] getdents64(4, [pid 5371] <... symlink resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4) = 0 [pid 5060] rmdir("./48/bus") = 0 [pid 5371] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... close resumed>) = 0 [pid 5060] umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] rmdir("./51/bus" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] mkdir("./51", 0777 [pid 5061] <... rmdir resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./48/binderfs", [pid 5057] <... mkdir resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./48/binderfs" [pid 5061] umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... unlink resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3) = 0 [pid 5060] rmdir("./48" [pid 5371] <... creat resumed>) = 4 [pid 5060] <... rmdir resumed>) = 0 [pid 5371] rename("./bus", "./file2" [pid 5061] newfstatat(AT_FDCWD, "./51/binderfs", [pid 5060] mkdir("./49", 0777 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5371] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] close(3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5372] <... ioctl resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] <... close resumed>) = 0 [pid 5372] close(3 [pid 5371] memfd_create("syzkaller", 0 [pid 5061] unlink("./51/binderfs" [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5372] <... close resumed>) = 0 [pid 5371] <... memfd_create resumed>) = 5 [pid 5061] <... unlink resumed>) = 0 [pid 5372] close(4 [pid 5371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... openat resumed>) = 3 [pid 5372] <... close resumed>) = 0 [pid 5372] mkdir("./bus", 0777 [pid 5371] <... mmap resumed>) = 0x7f138d200000 ./strace-static-x86_64: Process 5373 attached [pid 5372] <... mkdir resumed>) = 0 [pid 5061] getdents64(3, [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5373] set_robust_list(0x555556c07660, 24 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5373] <... set_robust_list resumed>) = 0 [pid 5372] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] rmdir("./51" [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5373 [pid 5373] chdir("./50" [pid 5061] <... rmdir resumed>) = 0 [pid 5373] <... chdir resumed>) = 0 [pid 5061] mkdir("./52", 0777 [pid 5371] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5373] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... mkdir resumed>) = 0 [pid 5373] <... prctl resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5373] setpgid(0, 0) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5372] <... mount resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [ 82.411462][ T5372] loop0: detected capacity change from 0 to 1024 [pid 5372] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5373] write(3, "1000", 4 [pid 5372] <... openat resumed>) = 3 [pid 5373] <... write resumed>) = 4 [pid 5371] <... write resumed>) = 524288 [pid 5373] close(3) = 0 [pid 5372] chdir("./bus") = 0 [pid 5372] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5373] symlink("/dev/binderfs", "./binderfs" [pid 5372] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5373] <... symlink resumed>) = 0 [pid 5372] <... symlink resumed>) = 0 [pid 5372] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5371] munmap(0x7f138d200000, 138412032 [pid 5373] memfd_create("syzkaller", 0 [pid 5371] <... munmap resumed>) = 0 [pid 5372] <... creat resumed>) = 4 [pid 5372] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5371] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5372] memfd_create("syzkaller", 0 [pid 5371] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5372] <... memfd_create resumed>) = 5 [pid 5371] close(5 [pid 5372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5372] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5371] <... close resumed>) = 0 [pid 5371] creat("./file1", 000 [pid 5373] <... memfd_create resumed>) = 3 [pid 5371] <... creat resumed>) = 5 [pid 5371] exit_group(0) = ? [pid 5373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5371] +++ exited with 0 +++ [pid 5060] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5373] <... mmap resumed>) = 0x7f138d200000 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5371, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5057] close(3 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5372] <... write resumed>) = 524288 [pid 5059] <... restart_syscall resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] close(3./strace-static-x86_64: Process 5374 attached [pid 5374] set_robust_list(0x555556c07660, 24) = 0 [pid 5374] chdir("./51" [pid 5373] 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"..., 524288 [pid 5374] <... chdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5374 [pid 5374] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5372] munmap(0x7f138d200000, 138412032 [pid 5374] <... prctl resumed>) = 0 [pid 5372] <... munmap resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5375 attached [pid 5374] setpgid(0, 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5375 [pid 5374] <... setpgid resumed>) = 0 [pid 5375] set_robust_list(0x555556c07660, 24 [pid 5374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5372] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5375] <... set_robust_list resumed>) = 0 [pid 5374] <... openat resumed>) = 3 [pid 5372] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5374] write(3, "1000", 4) = 4 [pid 5374] close(3) = 0 [pid 5375] chdir("./49" [pid 5374] symlink("/dev/binderfs", "./binderfs" [pid 5375] <... chdir resumed>) = 0 [pid 5374] <... symlink resumed>) = 0 [pid 5372] close(5) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5374] memfd_create("syzkaller", 0 [pid 5059] newfstatat(3, "", [pid 5375] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5375] <... prctl resumed>) = 0 [pid 5374] <... memfd_create resumed>) = 3 [pid 5059] getdents64(3, [pid 5375] setpgid(0, 0 [pid 5374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5375] <... setpgid resumed>) = 0 [pid 5374] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5374] 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"..., 524288 [pid 5059] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5375] <... openat resumed>) = 3 [pid 5375] write(3, "1000", 4 [pid 5373] <... write resumed>) = 524288 [pid 5375] <... write resumed>) = 4 [pid 5375] close(3) = 0 [pid 5375] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5375] memfd_create("syzkaller", 0 [pid 5372] creat("./file1", 000 [pid 5375] <... memfd_create resumed>) = 3 [pid 5375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] close(3 [pid 5375] <... mmap resumed>) = 0x7f138d200000 [pid 5375] 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"..., 524288 [pid 5373] munmap(0x7f138d200000, 138412032 [pid 5061] <... close resumed>) = 0 [pid 5374] <... write resumed>) = 524288 [pid 5375] <... write resumed>) = 524288 [pid 5373] <... munmap resumed>) = 0 [pid 5372] <... creat resumed>) = 5 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] <... umount2 resumed>) = 0 [pid 5374] munmap(0x7f138d200000, 138412032 [pid 5372] exit_group(0 [pid 5059] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5372] <... exit_group resumed>) = ? [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5374] <... munmap resumed>) = 0 [pid 5373] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5374] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] newfstatat(AT_FDCWD, "./51/bus", [pid 5374] <... openat resumed>) = 4 [pid 5373] <... openat resumed>) = 4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5374] ioctl(4, LOOP_SET_FD, 3 [pid 5059] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5376 attached [pid 5375] munmap(0x7f138d200000, 138412032 [pid 5373] ioctl(4, LOOP_SET_FD, 3 [pid 5372] +++ exited with 0 +++ [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5375] <... munmap resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./51/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5372, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5375] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... openat resumed>) = 4 [pid 5375] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", [pid 5375] ioctl(4, LOOP_SET_FD, 3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5376] set_robust_list(0x555556c07660, 24 [pid 5373] <... ioctl resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5376 [pid 5059] getdents64(4, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5376] <... set_robust_list resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5373] close(3 [pid 5056] newfstatat(3, "", [pid 5376] chdir("./52" [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(3, [pid 5059] getdents64(4, [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5376] <... chdir resumed>) = 0 [pid 5373] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5376] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5373] close(4 [pid 5376] <... prctl resumed>) = 0 [pid 5376] setpgid(0, 0 [pid 5373] <... close resumed>) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./51/bus" [pid 5376] <... setpgid resumed>) = 0 [pid 5373] mkdir("./bus", 0777 [pid 5059] <... rmdir resumed>) = 0 [pid 5375] <... ioctl resumed>) = 0 [pid 5059] umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5375] close(3) = 0 [pid 5059] newfstatat(AT_FDCWD, "./51/binderfs", [pid 5375] close(4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5375] <... close resumed>) = 0 [pid 5375] mkdir("./bus", 0777 [pid 5376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5375] <... mkdir resumed>) = 0 [pid 5059] unlink("./51/binderfs" [pid 5376] <... openat resumed>) = 3 [pid 5373] <... mkdir resumed>) = 0 [pid 5376] write(3, "1000", 4) = 4 [pid 5376] close(3) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5376] symlink("/dev/binderfs", "./binderfs" [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3 [pid 5376] <... symlink resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./51" [pid 5375] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5376] memfd_create("syzkaller", 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5374] <... ioctl resumed>) = 0 [pid 5374] close(3) = 0 [pid 5374] close(4) = 0 [pid 5374] mkdir("./bus", 0777) = 0 [pid 5376] <... memfd_create resumed>) = 3 [pid 5374] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5373] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] mkdir("./52", 0777 [pid 5056] <... umount2 resumed>) = 0 [pid 5376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5376] <... mmap resumed>) = 0x7f138d200000 [ 82.554902][ T5374] loop1: detected capacity change from 0 to 1024 [ 82.562108][ T5373] loop2: detected capacity change from 0 to 1024 [ 82.565071][ T5375] loop4: detected capacity change from 0 to 1024 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5376] 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"..., 524288 [pid 5059] <... openat resumed>) = 3 [pid 5375] <... mount resumed>) = 0 [pid 5056] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5375] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] newfstatat(AT_FDCWD, "./50/bus", [pid 5375] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5375] chdir("./bus") = 0 [pid 5375] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5375] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5376] <... write resumed>) = 524288 [pid 5375] <... symlink resumed>) = 0 [pid 5374] <... mount resumed>) = 0 [pid 5373] <... mount resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5376] munmap(0x7f138d200000, 138412032 [pid 5375] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5374] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5373] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5376] <... munmap resumed>) = 0 [pid 5374] <... openat resumed>) = 3 [pid 5373] <... openat resumed>) = 3 [pid 5056] openat(AT_FDCWD, "./50/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5374] chdir("./bus") = 0 [pid 5373] chdir("./bus" [pid 5056] <... openat resumed>) = 4 [pid 5376] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5374] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5373] <... chdir resumed>) = 0 [pid 5056] newfstatat(4, "", [pid 5376] <... openat resumed>) = 4 [pid 5374] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5373] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5374] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5373] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5376] ioctl(4, LOOP_SET_FD, 3 [pid 5375] <... creat resumed>) = 4 [pid 5374] <... symlink resumed>) = 0 [pid 5373] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5375] rename("./bus", "./file2" [pid 5056] close(4) = 0 [pid 5056] rmdir("./50/bus" [pid 5375] <... rename resumed>) = -1 EEXIST (File exists) [pid 5375] memfd_create("syzkaller", 0) = 5 [pid 5375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5056] <... rmdir resumed>) = 0 [pid 5374] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5375] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./50/binderfs") = 0 [pid 5374] <... creat resumed>) = 4 [pid 5373] <... symlink resumed>) = 0 [pid 5056] getdents64(3, [pid 5374] rename("./bus", "./file2" [pid 5373] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5374] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... ioctl resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./50" [pid 5376] <... ioctl resumed>) = 0 [pid 5375] <... write resumed>) = 524288 [pid 5374] memfd_create("syzkaller", 0 [pid 5373] <... creat resumed>) = 4 [pid 5056] <... rmdir resumed>) = 0 [pid 5376] close(3) = 0 [pid 5056] mkdir("./51", 0777 [pid 5376] close(4 [pid 5059] close(3 [pid 5374] <... memfd_create resumed>) = 5 [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5376] <... close resumed>) = 0 [pid 5374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5376] mkdir("./bus", 0777 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 5377 attached [pid 5374] <... mmap resumed>) = 0x7f138d200000 [pid 5373] rename("./bus", "./file2" [pid 5056] <... openat resumed>) = 3 [pid 5377] set_robust_list(0x555556c07660, 24 [pid 5376] <... mkdir resumed>) = 0 [pid 5374] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5377] <... set_robust_list resumed>) = 0 [pid 5376] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5375] munmap(0x7f138d200000, 138412032 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5377 [pid 5377] chdir("./52" [pid 5375] <... munmap resumed>) = 0 [pid 5373] <... rename resumed>) = -1 EEXIST (File exists) [pid 5373] memfd_create("syzkaller", 0 [pid 5375] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5373] <... memfd_create resumed>) = 5 [pid 5375] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5375] close(5 [pid 5373] <... mmap resumed>) = 0x7f138d200000 [pid 5377] <... chdir resumed>) = 0 [pid 5376] <... mount resumed>) = 0 [pid 5375] <... close resumed>) = 0 [pid 5373] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5376] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5377] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5376] <... openat resumed>) = 3 [pid 5374] <... write resumed>) = 524288 [pid 5377] <... prctl resumed>) = 0 [pid 5376] chdir("./bus" [pid 5377] setpgid(0, 0) = 0 [pid 5376] <... chdir resumed>) = 0 [pid 5377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5375] creat("./file1", 000 [pid 5376] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5376] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5375] <... creat resumed>) = 5 [pid 5377] <... openat resumed>) = 3 [pid 5376] <... symlink resumed>) = 0 [pid 5375] exit_group(0 [pid 5373] <... write resumed>) = 524288 [pid 5377] write(3, "1000", 4 [pid 5376] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5375] <... exit_group resumed>) = ? [pid 5377] <... write resumed>) = 4 [pid 5375] +++ exited with 0 +++ [ 82.649593][ T5376] loop5: detected capacity change from 0 to 1024 [pid 5377] close(3 [pid 5376] <... creat resumed>) = 4 [pid 5374] munmap(0x7f138d200000, 138412032 [pid 5373] munmap(0x7f138d200000, 138412032 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5375, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5377] <... close resumed>) = 0 [pid 5376] rename("./bus", "./file2" [pid 5374] <... munmap resumed>) = 0 [pid 5373] <... munmap resumed>) = 0 [pid 5374] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5374] close(5 [pid 5377] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5376] <... rename resumed>) = -1 EEXIST (File exists) [pid 5373] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5377] memfd_create("syzkaller", 0 [pid 5376] memfd_create("syzkaller", 0 [pid 5373] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5373] close(5 [pid 5060] openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5373] <... close resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5056] <... ioctl resumed>) = 0 [pid 5376] <... memfd_create resumed>) = 5 [pid 5060] newfstatat(3, "", [pid 5376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, [pid 5377] <... memfd_create resumed>) = 3 [pid 5376] <... mmap resumed>) = 0x7f138d200000 [pid 5374] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] close(3 [pid 5060] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5377] <... mmap resumed>) = 0x7f138d200000 [pid 5373] creat("./file1", 000 [pid 5377] 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"..., 524288 [pid 5374] creat("./file1", 000 [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5378 [pid 5376] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288./strace-static-x86_64: Process 5378 attached [pid 5373] <... creat resumed>) = 5 [pid 5373] exit_group(0) = ? [pid 5378] set_robust_list(0x555556c07660, 24 [pid 5376] <... write resumed>) = 524288 [pid 5374] <... creat resumed>) = 5 [pid 5373] +++ exited with 0 +++ [pid 5378] <... set_robust_list resumed>) = 0 [pid 5378] chdir("./51") = 0 [pid 5374] exit_group(0 [pid 5377] <... write resumed>) = 524288 [pid 5378] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5376] munmap(0x7f138d200000, 138412032 [pid 5374] <... exit_group resumed>) = ? [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5373, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5378] <... prctl resumed>) = 0 [pid 5377] munmap(0x7f138d200000, 138412032 [pid 5376] <... munmap resumed>) = 0 [pid 5374] +++ exited with 0 +++ [pid 5378] setpgid(0, 0 [pid 5376] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5378] <... setpgid resumed>) = 0 [pid 5377] <... munmap resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5376] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5374, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] newfstatat(AT_FDCWD, "./49/bus", [pid 5058] umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5378] <... openat resumed>) = 3 [pid 5376] close(5 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(3, "", [pid 5057] openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5378] write(3, "1000", 4 [pid 5057] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5377] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] newfstatat(3, "", [pid 5378] <... write resumed>) = 4 [pid 5060] openat(AT_FDCWD, "./49/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5378] close(3 [pid 5060] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5378] <... close resumed>) = 0 [pid 5377] <... openat resumed>) = 4 [pid 5060] newfstatat(4, "", [pid 5378] symlink("/dev/binderfs", "./binderfs" [pid 5377] ioctl(4, LOOP_SET_FD, 3 [pid 5376] <... close resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] getdents64(3, [pid 5378] <... symlink resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5378] memfd_create("syzkaller", 0 [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4) = 0 [pid 5060] rmdir("./49/bus" [pid 5378] <... memfd_create resumed>) = 3 [pid 5060] <... rmdir resumed>) = 0 [pid 5378] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5060] umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5378] 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"..., 524288 [pid 5377] <... ioctl resumed>) = 0 [pid 5376] creat("./file1", 000 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5377] close(3 [pid 5060] newfstatat(AT_FDCWD, "./49/binderfs", [pid 5377] <... close resumed>) = 0 [pid 5376] <... creat resumed>) = 5 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5377] close(4 [pid 5376] exit_group(0 [pid 5060] unlink("./49/binderfs" [pid 5377] <... close resumed>) = 0 [pid 5376] <... exit_group resumed>) = ? [pid 5377] mkdir("./bus", 0777 [pid 5376] +++ exited with 0 +++ [pid 5377] <... mkdir resumed>) = 0 [pid 5377] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] <... unlink resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5376, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5057] <... umount2 resumed>) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3) = 0 [pid 5378] <... write resumed>) = 524288 [pid 5060] rmdir("./49" [pid 5057] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... rmdir resumed>) = 0 [pid 5060] mkdir("./50", 0777 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... mkdir resumed>) = 0 [pid 5378] munmap(0x7f138d200000, 138412032 [pid 5061] umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] newfstatat(AT_FDCWD, "./51/bus", [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... openat resumed>) = 3 [pid 5378] <... munmap resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5378] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... openat resumed>) = 3 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] newfstatat(3, "", [pid 5058] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./51/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] getdents64(3, [pid 5058] newfstatat(AT_FDCWD, "./50/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(4, "", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] openat(AT_FDCWD, "./50/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] getdents64(4, [pid 5378] <... openat resumed>) = 4 [pid 5058] <... openat resumed>) = 4 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] newfstatat(4, "", [pid 5057] getdents64(4, [pid 5378] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] close(4 [pid 5058] getdents64(4, [pid 5057] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5057] rmdir("./51/bus" [pid 5058] <... close resumed>) = 0 [pid 5378] <... ioctl resumed>) = 0 [pid 5377] <... mount resumed>) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5058] rmdir("./50/bus" [pid 5057] <... rmdir resumed>) = 0 [pid 5378] close(3 [pid 5377] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5378] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... rmdir resumed>) = 0 [pid 5057] umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5378] close(4 [pid 5377] <... openat resumed>) = 3 [pid 5061] newfstatat(AT_FDCWD, "./52/bus", [pid 5058] umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5378] <... close resumed>) = 0 [pid 5377] chdir("./bus" [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./51/binderfs", [pid 5377] <... chdir resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./50/binderfs", [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5378] mkdir("./bus", 0777 [pid 5377] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./51/binderfs" [pid 5378] <... mkdir resumed>) = 0 [pid 5377] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] unlink("./50/binderfs" [pid 5057] <... unlink resumed>) = 0 [pid 5377] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... unlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5061] openat(AT_FDCWD, "./52/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] getdents64(3, [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3 [pid 5058] close(3 [pid 5057] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] rmdir("./51" [pid 5378] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... openat resumed>) = 4 [pid 5060] <... ioctl resumed>) = 0 [pid 5061] newfstatat(4, "", [pid 5058] rmdir("./50" [pid 5057] <... rmdir resumed>) = 0 [pid 5377] <... symlink resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] mkdir("./52", 0777 [pid 5061] getdents64(4, [pid 5377] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] mkdir("./51", 0777 [pid 5057] <... mkdir resumed>) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... openat resumed>) = 3 [pid 5377] <... creat resumed>) = 4 [pid 5061] close(4 [pid 5058] <... openat resumed>) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5061] <... close resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5377] rename("./bus", "./file2" [pid 5378] <... mount resumed>) = 0 [ 82.771836][ T5377] loop3: detected capacity change from 0 to 1024 [ 82.807342][ T5378] loop0: detected capacity change from 0 to 1024 [pid 5061] rmdir("./52/bus" [pid 5378] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] <... rmdir resumed>) = 0 [pid 5060] close(3 [pid 5378] <... openat resumed>) = 3 [pid 5061] umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5378] chdir("./bus" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5378] <... chdir resumed>) = 0 [pid 5377] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] newfstatat(AT_FDCWD, "./52/binderfs", [pid 5378] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5378] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5378] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] unlink("./52/binderfs") = 0 [pid 5378] <... symlink resumed>) = 0 [pid 5061] getdents64(3, [pid 5378] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5061] rmdir("./52") = 0 [pid 5061] mkdir("./53", 0777 [pid 5377] memfd_create("syzkaller", 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5378] <... creat resumed>) = 4 [pid 5377] <... memfd_create resumed>) = 5 [pid 5378] rename("./bus", "./file2" [pid 5377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5378] <... rename resumed>) = -1 EEXIST (File exists) [pid 5377] <... mmap resumed>) = 0x7f138d200000 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5378] memfd_create("syzkaller", 0 [pid 5061] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5379 attached [pid 5378] <... memfd_create resumed>) = 5 [pid 5379] set_robust_list(0x555556c07660, 24 [pid 5378] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5379 [pid 5379] <... set_robust_list resumed>) = 0 [pid 5377] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5379] chdir("./50" [pid 5378] <... mmap resumed>) = 0x7f138d200000 [pid 5379] <... chdir resumed>) = 0 [pid 5379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5379] setpgid(0, 0) = 0 [pid 5379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5379] write(3, "1000", 4 [pid 5378] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5377] <... write resumed>) = 524288 [pid 5057] <... ioctl resumed>) = 0 [pid 5379] <... write resumed>) = 4 [pid 5379] close(3) = 0 [pid 5377] munmap(0x7f138d200000, 138412032 [pid 5379] symlink("/dev/binderfs", "./binderfs" [pid 5377] <... munmap resumed>) = 0 [pid 5379] <... symlink resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5058] close(3) = 0 [pid 5377] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5377] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5377] close(5./strace-static-x86_64: Process 5380 attached ) = 0 [pid 5379] memfd_create("syzkaller", 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5057] close(3 [pid 5379] <... memfd_create resumed>) = 3 [pid 5057] <... close resumed>) = 0 [pid 5379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5380] set_robust_list(0x555556c07660, 24 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5380 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5380] <... set_robust_list resumed>) = 0 [pid 5061] close(3 [pid 5380] chdir("./51" [pid 5379] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... close resumed>) = 0 ./strace-static-x86_64: Process 5381 attached [pid 5380] <... chdir resumed>) = 0 [pid 5379] 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"..., 524288 [pid 5378] <... write resumed>) = 524288 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5381 [pid 5377] creat("./file1", 000./strace-static-x86_64: Process 5382 attached [pid 5381] set_robust_list(0x555556c07660, 24 [pid 5380] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5378] munmap(0x7f138d200000, 138412032 [pid 5380] <... prctl resumed>) = 0 [pid 5378] <... munmap resumed>) = 0 [pid 5382] set_robust_list(0x555556c07660, 24 [pid 5381] <... set_robust_list resumed>) = 0 [pid 5380] setpgid(0, 0 [pid 5378] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5382 [pid 5378] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5382] <... set_robust_list resumed>) = 0 [pid 5381] chdir("./52" [pid 5380] <... setpgid resumed>) = 0 [pid 5378] close(5 [pid 5382] chdir("./53" [pid 5381] <... chdir resumed>) = 0 [pid 5380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5378] <... close resumed>) = 0 [pid 5382] <... chdir resumed>) = 0 [pid 5381] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5382] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5381] <... prctl resumed>) = 0 [pid 5380] <... openat resumed>) = 3 [pid 5377] <... creat resumed>) = 5 [pid 5382] <... prctl resumed>) = 0 [pid 5381] setpgid(0, 0 [pid 5380] write(3, "1000", 4 [pid 5382] setpgid(0, 0 [pid 5381] <... setpgid resumed>) = 0 [pid 5382] <... setpgid resumed>) = 0 [pid 5381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5377] exit_group(0 [pid 5382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5380] <... write resumed>) = 4 [pid 5379] <... write resumed>) = 524288 [pid 5377] <... exit_group resumed>) = ? [pid 5382] write(3, "1000", 4 [pid 5380] close(3 [pid 5382] <... write resumed>) = 4 [pid 5382] close(3 [pid 5380] <... close resumed>) = 0 [pid 5382] <... close resumed>) = 0 [pid 5380] symlink("/dev/binderfs", "./binderfs" [pid 5382] symlink("/dev/binderfs", "./binderfs" [pid 5381] <... openat resumed>) = 3 [pid 5380] <... symlink resumed>) = 0 [pid 5379] munmap(0x7f138d200000, 138412032 [pid 5378] creat("./file1", 000 [pid 5377] +++ exited with 0 +++ [pid 5382] <... symlink resumed>) = 0 [pid 5381] write(3, "1000", 4 [pid 5380] memfd_create("syzkaller", 0 [pid 5379] <... munmap resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5377, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5381] <... write resumed>) = 4 [pid 5380] <... memfd_create resumed>) = 3 [pid 5379] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5382] memfd_create("syzkaller", 0 [pid 5381] close(3 [pid 5380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5379] <... openat resumed>) = 4 [pid 5379] ioctl(4, LOOP_SET_FD, 3 [pid 5059] umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5382] <... memfd_create resumed>) = 3 [pid 5381] <... close resumed>) = 0 [pid 5380] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5381] symlink("/dev/binderfs", "./binderfs" [pid 5059] openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5381] <... symlink resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5382] <... mmap resumed>) = 0x7f138d200000 [pid 5378] <... creat resumed>) = 5 [pid 5059] newfstatat(3, "", [pid 5381] memfd_create("syzkaller", 0 [pid 5378] exit_group(0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5378] <... exit_group resumed>) = ? [pid 5059] getdents64(3, [pid 5381] <... memfd_create resumed>) = 3 [pid 5378] +++ exited with 0 +++ [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5378, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5382] 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"..., 524288 [pid 5381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5380] 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"..., 524288 [pid 5059] <... umount2 resumed>) = 0 [pid 5059] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./52/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5381] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "./52/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... openat resumed>) = 4 [pid 5056] openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, [pid 5379] <... ioctl resumed>) = 0 [pid 5059] newfstatat(4, "", [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5379] close(3 [pid 5059] getdents64(4, [pid 5056] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5381] 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"..., 524288 [pid 5379] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5379] close(4 [pid 5059] getdents64(4, [pid 5379] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5379] mkdir("./bus", 0777 [pid 5059] close(4 [pid 5379] <... mkdir resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./52/bus") = 0 [pid 5379] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5382] <... write resumed>) = 524288 [pid 5381] <... write resumed>) = 524288 [pid 5380] <... write resumed>) = 524288 [pid 5379] <... mount resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5382] munmap(0x7f138d200000, 138412032) = 0 [pid 5059] newfstatat(AT_FDCWD, "./52/binderfs", [pid 5382] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5379] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5379] <... openat resumed>) = 3 [pid 5059] unlink("./52/binderfs" [pid 5379] chdir("./bus" [pid 5059] <... unlink resumed>) = 0 [pid 5056] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5382] ioctl(4, LOOP_SET_FD, 3 [pid 5380] munmap(0x7f138d200000, 138412032 [pid 5379] <... chdir resumed>) = 0 [ 82.944937][ T5379] loop4: detected capacity change from 0 to 1024 [pid 5379] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5379] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5379] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] close(3) = 0 [pid 5059] rmdir("./52") = 0 [pid 5379] <... symlink resumed>) = 0 [pid 5059] mkdir("./53", 0777 [pid 5379] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5382] <... ioctl resumed>) = 0 [pid 5381] munmap(0x7f138d200000, 138412032 [pid 5380] <... munmap resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./51/bus", [pid 5382] close(3 [pid 5381] <... munmap resumed>) = 0 [pid 5380] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5382] <... close resumed>) = 0 [pid 5381] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5380] <... openat resumed>) = 4 [pid 5379] <... creat resumed>) = 4 [pid 5059] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5382] close(4 [pid 5381] <... openat resumed>) = 4 [pid 5380] ioctl(4, LOOP_SET_FD, 3 [pid 5379] rename("./bus", "./file2" [pid 5056] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5382] <... close resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5382] mkdir("./bus", 0777 [pid 5381] ioctl(4, LOOP_SET_FD, 3 [pid 5379] <... rename resumed>) = -1 EEXIST (File exists) [pid 5382] <... mkdir resumed>) = 0 [pid 5379] memfd_create("syzkaller", 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5379] <... memfd_create resumed>) = 5 [pid 5056] openat(AT_FDCWD, "./51/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... openat resumed>) = 4 [pid 5379] <... mmap resumed>) = 0x7f138d200000 [pid 5056] newfstatat(4, "", [pid 5382] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5379] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5380] <... ioctl resumed>) = 0 [pid 5380] close(3 [pid 5056] getdents64(4, [pid 5380] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5380] close(4 [pid 5056] getdents64(4, [pid 5380] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5380] mkdir("./bus", 0777 [pid 5382] <... mount resumed>) = 0 [pid 5381] <... ioctl resumed>) = 0 [pid 5380] <... mkdir resumed>) = 0 [pid 5056] close(4 [pid 5382] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5381] close(3 [pid 5380] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5382] <... openat resumed>) = 3 [pid 5381] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5382] chdir("./bus" [pid 5056] rmdir("./51/bus" [pid 5382] <... chdir resumed>) = 0 [pid 5381] close(4 [pid 5382] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5382] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5381] <... close resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5056] umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5381] mkdir("./bus", 0777 [pid 5056] newfstatat(AT_FDCWD, "./51/binderfs", [pid 5382] <... symlink resumed>) = 0 [pid 5382] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5379] <... write resumed>) = 524288 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5382] <... creat resumed>) = 4 [pid 5381] <... mkdir resumed>) = 0 [pid 5379] munmap(0x7f138d200000, 138412032 [pid 5056] unlink("./51/binderfs" [pid 5382] rename("./bus", "./file2" [pid 5381] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5382] <... rename resumed>) = -1 EEXIST (File exists) [pid 5056] <... unlink resumed>) = 0 [pid 5382] memfd_create("syzkaller", 0) = 5 [pid 5379] <... munmap resumed>) = 0 [pid 5382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5379] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] getdents64(3, [pid 5382] <... mmap resumed>) = 0x7f138d200000 [pid 5382] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5380] <... mount resumed>) = 0 [pid 5379] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5379] close(5 [pid 5056] close(3 [pid 5380] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5056] <... close resumed>) = 0 [ 83.000940][ T5382] loop5: detected capacity change from 0 to 1024 [ 83.024375][ T5380] loop2: detected capacity change from 0 to 1024 [ 83.026373][ T5381] loop1: detected capacity change from 0 to 1024 [pid 5056] rmdir("./51" [pid 5380] <... openat resumed>) = 3 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5382] <... write resumed>) = 524288 [pid 5379] <... close resumed>) = 0 [pid 5380] chdir("./bus") = 0 [pid 5056] mkdir("./52", 0777 [pid 5059] close(3 [pid 5056] <... mkdir resumed>) = 0 [pid 5380] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5380] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5379] creat("./file1", 000 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5382] munmap(0x7f138d200000, 138412032 [pid 5056] <... openat resumed>) = 3 [pid 5382] <... munmap resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5383 attached [pid 5382] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5380] <... symlink resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5383 [pid 5383] set_robust_list(0x555556c07660, 24 [pid 5382] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5381] <... mount resumed>) = 0 [pid 5380] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5383] <... set_robust_list resumed>) = 0 [pid 5382] close(5 [pid 5381] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5383] chdir("./53" [pid 5382] <... close resumed>) = 0 [pid 5381] <... openat resumed>) = 3 [pid 5379] <... creat resumed>) = 5 [pid 5383] <... chdir resumed>) = 0 [pid 5381] chdir("./bus" [pid 5383] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5381] <... chdir resumed>) = 0 [pid 5383] <... prctl resumed>) = 0 [pid 5383] setpgid(0, 0 [pid 5381] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5380] <... creat resumed>) = 4 [pid 5383] <... setpgid resumed>) = 0 [pid 5381] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5380] rename("./bus", "./file2" [pid 5383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5381] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5380] <... rename resumed>) = -1 EEXIST (File exists) [pid 5380] memfd_create("syzkaller", 0) = 5 [pid 5383] <... openat resumed>) = 3 [pid 5381] <... symlink resumed>) = 0 [pid 5380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5379] exit_group(0 [pid 5381] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5380] <... mmap resumed>) = 0x7f138d200000 [pid 5379] <... exit_group resumed>) = ? [pid 5383] write(3, "1000", 4) = 4 [pid 5382] creat("./file1", 000 [pid 5383] close(3) = 0 [pid 5383] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5383] memfd_create("syzkaller", 0 [pid 5381] <... creat resumed>) = 4 [pid 5380] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5379] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5379, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5383] <... memfd_create resumed>) = 3 [pid 5383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5381] rename("./bus", "./file2" [pid 5060] umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5382] <... creat resumed>) = 5 [pid 5382] exit_group(0) = ? [pid 5382] +++ exited with 0 +++ [pid 5383] 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"..., 524288 [pid 5381] <... rename resumed>) = -1 EEXIST (File exists) [pid 5380] <... write resumed>) = 524288 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5381] memfd_create("syzkaller", 0 [pid 5060] openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5382, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5381] <... memfd_create resumed>) = 5 [pid 5061] umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5060] newfstatat(3, "", [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5380] munmap(0x7f138d200000, 138412032 [pid 5061] <... openat resumed>) = 3 [pid 5060] getdents64(3, [pid 5381] <... mmap resumed>) = 0x7f138d200000 [pid 5061] newfstatat(3, "", [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5383] <... write resumed>) = 524288 [pid 5380] <... munmap resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5380] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5061] getdents64(3, [pid 5380] close(5 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5380] <... close resumed>) = 0 [pid 5381] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5383] munmap(0x7f138d200000, 138412032) = 0 [pid 5383] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5383] <... openat resumed>) = 4 [pid 5383] ioctl(4, LOOP_SET_FD, 3 [pid 5061] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5383] <... ioctl resumed>) = 0 [pid 5381] <... write resumed>) = 524288 [pid 5380] creat("./file1", 000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(3 [pid 5383] close(3 [pid 5381] munmap(0x7f138d200000, 138412032 [pid 5383] <... close resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./53/bus", [pid 5060] newfstatat(AT_FDCWD, "./50/bus", [pid 5056] <... close resumed>) = 0 [pid 5383] close(4 [pid 5381] <... munmap resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5383] <... close resumed>) = 0 [pid 5381] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5380] <... creat resumed>) = 5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5383] mkdir("./bus", 0777 [pid 5381] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5380] exit_group(0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5383] <... mkdir resumed>) = 0 [pid 5381] close(5 [pid 5380] <... exit_group resumed>) = ? [pid 5061] openat(AT_FDCWD, "./53/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] openat(AT_FDCWD, "./50/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5061] <... openat resumed>) = 4 [pid 5060] newfstatat(4, "", [pid 5383] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] newfstatat(4, "", [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(4, [pid 5061] getdents64(4, [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] getdents64(4, [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5384 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4./strace-static-x86_64: Process 5384 attached [pid 5383] <... mount resumed>) = 0 [pid 5381] <... close resumed>) = 0 [pid 5380] +++ exited with 0 +++ [pid 5061] getdents64(4, [pid 5060] <... close resumed>) = 0 [pid 5384] set_robust_list(0x555556c07660, 24 [pid 5383] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5381] creat("./file1", 000 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] rmdir("./50/bus" [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5380, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5384] <... set_robust_list resumed>) = 0 [pid 5383] <... openat resumed>) = 3 [pid 5381] <... creat resumed>) = 5 [pid 5061] close(4 [pid 5060] <... rmdir resumed>) = 0 [pid 5384] chdir("./52" [pid 5383] chdir("./bus" [pid 5061] <... close resumed>) = 0 [pid 5060] umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5384] <... chdir resumed>) = 0 [pid 5383] <... chdir resumed>) = 0 [pid 5381] exit_group(0 [pid 5061] rmdir("./53/bus" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5384] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5383] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5381] <... exit_group resumed>) = ? [pid 5060] newfstatat(AT_FDCWD, "./50/binderfs", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... rmdir resumed>) = 0 [pid 5060] unlink("./50/binderfs" [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", [pid 5383] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5384] <... prctl resumed>) = 0 [pid 5060] <... unlink resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5381] +++ exited with 0 +++ [pid 5384] setpgid(0, 0 [pid 5383] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] getdents64(3, [pid 5058] getdents64(3, [pid 5384] <... setpgid resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./53/binderfs", [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5381, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5383] <... symlink resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] close(3 [pid 5058] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5384] <... openat resumed>) = 3 [pid 5383] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] unlink("./53/binderfs" [pid 5060] <... close resumed>) = 0 [pid 5384] write(3, "1000", 4 [pid 5060] rmdir("./50" [pid 5057] <... restart_syscall resumed>) = 0 [pid 5384] <... write resumed>) = 4 [pid 5061] <... unlink resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [ 83.166703][ T5383] loop3: detected capacity change from 0 to 1024 [pid 5384] close(3 [pid 5060] mkdir("./51", 0777 [pid 5384] <... close resumed>) = 0 [pid 5061] getdents64(3, [pid 5060] <... mkdir resumed>) = 0 [pid 5384] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5384] <... symlink resumed>) = 0 [pid 5061] close(3 [pid 5060] <... openat resumed>) = 3 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5384] memfd_create("syzkaller", 0 [pid 5061] <... close resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5383] <... creat resumed>) = 4 [pid 5061] rmdir("./53" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5384] <... memfd_create resumed>) = 3 [pid 5383] rename("./bus", "./file2" [pid 5061] <... rmdir resumed>) = 0 [pid 5058] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5383] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] newfstatat(AT_FDCWD, "./51/bus", [pid 5057] <... openat resumed>) = 3 [pid 5384] <... mmap resumed>) = 0x7f138d200000 [pid 5384] 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"..., 524288 [pid 5383] memfd_create("syzkaller", 0 [pid 5061] mkdir("./54", 0777 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(3, "", [pid 5058] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] openat(AT_FDCWD, "./51/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] getdents64(3, [pid 5383] <... memfd_create resumed>) = 5 [pid 5061] <... mkdir resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] newfstatat(4, "", [pid 5057] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5383] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... openat resumed>) = 3 [pid 5383] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./51/bus") = 0 [pid 5058] umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5384] <... write resumed>) = 524288 [pid 5057] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./51/binderfs" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./52/bus", [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5384] munmap(0x7f138d200000, 138412032 [pid 5383] <... write resumed>) = 524288 [pid 5060] <... ioctl resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5384] <... munmap resumed>) = 0 [pid 5383] munmap(0x7f138d200000, 138412032 [pid 5061] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5058] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5383] <... munmap resumed>) = 0 [pid 5058] rmdir("./51" [pid 5384] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5383] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] close(3 [pid 5060] <... close resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./52/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5384] <... openat resumed>) = 4 [pid 5383] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... openat resumed>) = 4 [pid 5384] ioctl(4, LOOP_SET_FD, 3 [pid 5383] close(5 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] mkdir("./52", 0777 [pid 5061] <... close resumed>) = 0 [pid 5057] newfstatat(4, "", [pid 5058] <... mkdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 5385 attached [pid 5384] <... ioctl resumed>) = 0 [pid 5383] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5385] set_robust_list(0x555556c07660, 24 [pid 5058] <... openat resumed>) = 3 [pid 5385] <... set_robust_list resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5385] chdir("./51") = 0 ./strace-static-x86_64: Process 5386 attached [pid 5384] close(3 [pid 5383] creat("./file1", 000 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5385 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5385] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] getdents64(4, [pid 5385] <... prctl resumed>) = 0 [pid 5384] <... close resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./52/bus" [pid 5386] set_robust_list(0x555556c07660, 24 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./52/binderfs" [pid 5385] setpgid(0, 0 [pid 5384] close(4 [pid 5057] <... unlink resumed>) = 0 [pid 5385] <... setpgid resumed>) = 0 [pid 5057] getdents64(3, [pid 5386] <... set_robust_list resumed>) = 0 [pid 5385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5384] <... close resumed>) = 0 [pid 5383] <... creat resumed>) = 5 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5386 [pid 5058] <... ioctl resumed>) = 0 [pid 5384] mkdir("./bus", 0777 [pid 5386] chdir("./54" [pid 5385] <... openat resumed>) = 3 [pid 5384] <... mkdir resumed>) = 0 [pid 5383] exit_group(0 [pid 5058] close(3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5386] <... chdir resumed>) = 0 [pid 5057] close(3 [pid 5385] write(3, "1000", 4 [pid 5057] <... close resumed>) = 0 [pid 5386] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5385] <... write resumed>) = 4 [pid 5386] <... prctl resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] rmdir("./52" [pid 5386] setpgid(0, 0 [pid 5385] close(3 [pid 5057] <... rmdir resumed>) = 0 [pid 5385] <... close resumed>) = 0 [pid 5386] <... setpgid resumed>) = 0 [pid 5385] symlink("/dev/binderfs", "./binderfs" [pid 5386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5385] <... symlink resumed>) = 0 [pid 5057] mkdir("./53", 0777) = 0 [pid 5386] <... openat resumed>) = 3 [ 83.275902][ T5384] loop0: detected capacity change from 0 to 1024 [pid 5385] memfd_create("syzkaller", 0) = 3 [pid 5386] write(3, "1000", 4 [pid 5384] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5383] <... exit_group resumed>) = ? [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5386] <... write resumed>) = 4 [pid 5385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... openat resumed>) = 3 [pid 5386] close(3) = 0 [pid 5385] <... mmap resumed>) = 0x7f138d200000 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5386] symlink("/dev/binderfs", "./binderfs" [pid 5383] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5383, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5387 [pid 5059] umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5387 attached ) = -1 EINVAL (Invalid argument) [pid 5387] set_robust_list(0x555556c07660, 24 [pid 5386] <... symlink resumed>) = 0 [pid 5059] openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5387] <... set_robust_list resumed>) = 0 [pid 5386] memfd_create("syzkaller", 0 [pid 5059] <... openat resumed>) = 3 [pid 5387] chdir("./52" [pid 5386] <... memfd_create resumed>) = 3 [pid 5059] newfstatat(3, "", [pid 5386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5386] <... mmap resumed>) = 0x7f138d200000 [pid 5384] <... mount resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5387] <... chdir resumed>) = 0 [pid 5384] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5387] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5387] <... prctl resumed>) = 0 [pid 5386] 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"..., 524288 [pid 5384] <... openat resumed>) = 3 [pid 5387] setpgid(0, 0 [pid 5385] 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"..., 524288 [pid 5384] chdir("./bus" [pid 5387] <... setpgid resumed>) = 0 [pid 5387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5384] <... chdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5384] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5387] <... openat resumed>) = 3 [pid 5384] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] newfstatat(AT_FDCWD, "./53/bus", [pid 5385] <... write resumed>) = 524288 [pid 5384] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5387] write(3, "1000", 4 [pid 5386] <... write resumed>) = 524288 [pid 5385] munmap(0x7f138d200000, 138412032 [pid 5059] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5387] <... write resumed>) = 4 [pid 5387] close(3 [pid 5386] munmap(0x7f138d200000, 138412032 [pid 5385] <... munmap resumed>) = 0 [pid 5384] <... symlink resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... ioctl resumed>) = 0 [pid 5387] <... close resumed>) = 0 [pid 5385] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] close(3 [pid 5387] symlink("/dev/binderfs", "./binderfs" [pid 5385] <... openat resumed>) = 4 [pid 5057] <... close resumed>) = 0 [pid 5385] ioctl(4, LOOP_SET_FD, 3 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5387] <... symlink resumed>) = 0 [pid 5386] <... munmap resumed>) = 0 [pid 5385] <... ioctl resumed>) = 0 [pid 5384] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] openat(AT_FDCWD, "./53/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5388 attached [pid 5387] memfd_create("syzkaller", 0 [pid 5386] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5385] close(3 [pid 5059] <... openat resumed>) = 4 [pid 5388] set_robust_list(0x555556c07660, 24 [pid 5387] <... memfd_create resumed>) = 3 [pid 5386] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", [pid 5388] <... set_robust_list resumed>) = 0 [pid 5387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5385] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5388 [pid 5388] chdir("./53" [pid 5387] <... mmap resumed>) = 0x7f138d200000 [pid 5386] ioctl(4, LOOP_SET_FD, 3 [pid 5385] close(4 [pid 5384] <... creat resumed>) = 4 [pid 5059] getdents64(4, [pid 5388] <... chdir resumed>) = 0 [pid 5386] <... ioctl resumed>) = 0 [pid 5385] <... close resumed>) = 0 [pid 5384] rename("./bus", "./file2" [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5387] 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"..., 524288 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5385] mkdir("./bus", 0777 [pid 5059] rmdir("./53/bus" [pid 5385] <... mkdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5388] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5385] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5388] <... prctl resumed>) = 0 [pid 5386] close(3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5388] setpgid(0, 0 [pid 5386] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./53/binderfs", [pid 5388] <... setpgid resumed>) = 0 [pid 5386] close(4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5386] <... close resumed>) = 0 [pid 5384] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] unlink("./53/binderfs" [pid 5386] mkdir("./bus", 0777 [pid 5384] memfd_create("syzkaller", 0 [pid 5059] <... unlink resumed>) = 0 [pid 5388] <... openat resumed>) = 3 [pid 5384] <... memfd_create resumed>) = 5 [pid 5059] getdents64(3, [pid 5388] write(3, "1000", 4 [pid 5386] <... mkdir resumed>) = 0 [pid 5384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5388] <... write resumed>) = 4 [pid 5385] <... mount resumed>) = 0 [pid 5384] <... mmap resumed>) = 0x7f138d200000 [pid 5386] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] close(3 [pid 5388] close(3 [pid 5387] <... write resumed>) = 524288 [pid 5385] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5384] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... close resumed>) = 0 [pid 5388] <... close resumed>) = 0 [pid 5387] munmap(0x7f138d200000, 138412032 [pid 5385] <... openat resumed>) = 3 [pid 5059] rmdir("./53" [pid 5388] symlink("/dev/binderfs", "./binderfs" [pid 5387] <... munmap resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5385] chdir("./bus" [pid 5059] mkdir("./54", 0777 [pid 5388] <... symlink resumed>) = 0 [pid 5387] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5385] <... chdir resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5385] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5388] memfd_create("syzkaller", 0 [pid 5387] <... openat resumed>) = 4 [pid 5385] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5388] <... memfd_create resumed>) = 3 [ 83.382653][ T5385] loop4: detected capacity change from 0 to 1024 [ 83.396188][ T5386] loop5: detected capacity change from 0 to 1024 [pid 5387] ioctl(4, LOOP_SET_FD, 3 [pid 5385] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5385] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] <... openat resumed>) = 3 [pid 5388] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5387] <... ioctl resumed>) = 0 [pid 5386] <... mount resumed>) = 0 [pid 5384] <... write resumed>) = 524288 [pid 5387] close(3 [pid 5386] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5388] <... mmap resumed>) = 0x7f138d200000 [pid 5387] <... close resumed>) = 0 [pid 5386] <... openat resumed>) = 3 [pid 5387] close(4 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5388] 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"..., 524288 [pid 5387] <... close resumed>) = 0 [pid 5385] <... creat resumed>) = 4 [pid 5384] munmap(0x7f138d200000, 138412032 [pid 5385] rename("./bus", "./file2" [pid 5384] <... munmap resumed>) = 0 [pid 5385] <... rename resumed>) = -1 EEXIST (File exists) [pid 5385] memfd_create("syzkaller", 0) = 5 [pid 5385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5387] mkdir("./bus", 0777 [pid 5386] chdir("./bus" [pid 5385] <... mmap resumed>) = 0x7f138d200000 [pid 5387] <... mkdir resumed>) = 0 [pid 5386] <... chdir resumed>) = 0 [pid 5385] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5387] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5386] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5384] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5386] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5384] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5384] close(5 [pid 5386] <... symlink resumed>) = 0 [pid 5384] <... close resumed>) = 0 [pid 5386] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5384] creat("./file1", 000 [pid 5386] <... creat resumed>) = 4 [pid 5386] rename("./bus", "./file2" [pid 5384] <... creat resumed>) = 5 [pid 5384] exit_group(0) = ? [pid 5386] <... rename resumed>) = -1 EEXIST (File exists) [pid 5388] <... write resumed>) = 524288 [pid 5386] memfd_create("syzkaller", 0) = 5 [pid 5386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5387] <... mount resumed>) = 0 [pid 5385] <... write resumed>) = 524288 [pid 5388] munmap(0x7f138d200000, 138412032 [pid 5387] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5386] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5384] +++ exited with 0 +++ [pid 5388] <... munmap resumed>) = 0 [pid 5387] <... openat resumed>) = 3 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5384, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5388] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5387] chdir("./bus" [pid 5388] <... openat resumed>) = 4 [pid 5387] <... chdir resumed>) = 0 [pid 5385] munmap(0x7f138d200000, 138412032 [pid 5388] ioctl(4, LOOP_SET_FD, 3 [pid 5387] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5385] <... munmap resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5387] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5387] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5056] <... openat resumed>) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 83.425827][ T5387] loop2: detected capacity change from 0 to 1024 [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5385] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5385] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5385] close(5 [pid 5059] close(3) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5386] <... write resumed>) = 524288 [pid 5387] <... symlink resumed>) = 0 [pid 5387] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5386] munmap(0x7f138d200000, 138412032 [pid 5056] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 5389 attached [pid 5386] <... munmap resumed>) = 0 [pid 5385] <... close resumed>) = 0 [pid 5386] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5388] <... ioctl resumed>) = 0 [pid 5387] <... creat resumed>) = 4 [pid 5389] set_robust_list(0x555556c07660, 24 [pid 5386] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5385] creat("./file1", 000 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5389 [pid 5056] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5389] <... set_robust_list resumed>) = 0 [pid 5388] close(3 [pid 5387] rename("./bus", "./file2" [pid 5386] close(5 [pid 5385] <... creat resumed>) = 5 [pid 5385] exit_group(0) = ? [pid 5385] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5385, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5060] umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5386] <... close resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5389] chdir("./54" [pid 5060] <... openat resumed>) = 3 [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5388] <... close resumed>) = 0 [pid 5060] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5388] close(4 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5388] <... close resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./52/bus", [pid 5388] mkdir("./bus", 0777 [pid 5387] <... rename resumed>) = -1 EEXIST (File exists) [pid 5387] memfd_create("syzkaller", 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5388] <... mkdir resumed>) = 0 [pid 5389] <... chdir resumed>) = 0 [pid 5387] <... memfd_create resumed>) = 5 [pid 5056] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5389] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5388] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5386] creat("./file1", 000 [pid 5389] <... prctl resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./52/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5389] setpgid(0, 0 [pid 5387] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... openat resumed>) = 4 [pid 5389] <... setpgid resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5388] <... mount resumed>) = 0 [pid 5386] <... creat resumed>) = 5 [pid 5056] newfstatat(4, "", [pid 5388] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5387] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5389] <... openat resumed>) = 3 [pid 5388] <... openat resumed>) = 3 [pid 5386] exit_group(0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(4, [pid 5060] newfstatat(AT_FDCWD, "./51/bus", [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5388] chdir("./bus" [pid 5386] <... exit_group resumed>) = ? [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5389] write(3, "1000", 4 [pid 5388] <... chdir resumed>) = 0 [pid 5387] <... write resumed>) = 524288 [pid 5386] +++ exited with 0 +++ [pid 5060] umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(4, [pid 5389] <... write resumed>) = 4 [pid 5389] close(3) = 0 [pid 5389] symlink("/dev/binderfs", "./binderfs" [pid 5388] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5386, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5389] <... symlink resumed>) = 0 [pid 5389] memfd_create("syzkaller", 0 [pid 5388] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] openat(AT_FDCWD, "./51/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] close(4 [pid 5389] <... memfd_create resumed>) = 3 [ 83.481485][ T5388] loop1: detected capacity change from 0 to 1024 [pid 5389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5388] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5387] munmap(0x7f138d200000, 138412032 [pid 5060] <... openat resumed>) = 4 [pid 5056] <... close resumed>) = 0 [pid 5060] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] getdents64(4, [pid 5387] <... munmap resumed>) = 0 [pid 5061] newfstatat(3, "", [pid 5387] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] rmdir("./52/bus" [pid 5387] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] getdents64(3, [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5388] <... symlink resumed>) = 0 [pid 5387] close(5 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] getdents64(4, [pid 5056] <... rmdir resumed>) = 0 [pid 5061] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5389] 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"..., 524288 [pid 5388] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] close(4) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] rmdir("./51/bus" [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./52/binderfs" [pid 5060] umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5387] <... close resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./51/binderfs", [pid 5387] creat("./file1", 000 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5060] unlink("./51/binderfs" [pid 5056] getdents64(3, [pid 5388] <... creat resumed>) = 4 [pid 5060] <... unlink resumed>) = 0 [pid 5388] rename("./bus", "./file2" [pid 5061] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5388] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5388] memfd_create("syzkaller", 0 [pid 5061] newfstatat(AT_FDCWD, "./54/bus", [pid 5060] close(3 [pid 5056] <... close resumed>) = 0 [pid 5389] <... write resumed>) = 524288 [pid 5388] <... memfd_create resumed>) = 5 [pid 5387] <... creat resumed>) = 5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... close resumed>) = 0 [pid 5056] rmdir("./52" [pid 5389] munmap(0x7f138d200000, 138412032 [pid 5388] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5387] exit_group(0 [pid 5061] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] rmdir("./51" [pid 5388] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... rmdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5389] <... munmap resumed>) = 0 [pid 5387] <... exit_group resumed>) = ? [pid 5056] mkdir("./53", 0777 [pid 5389] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] openat(AT_FDCWD, "./54/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] mkdir("./52", 0777 [pid 5389] <... openat resumed>) = 4 [pid 5389] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... openat resumed>) = 4 [pid 5060] <... mkdir resumed>) = 0 [pid 5061] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... openat resumed>) = 3 [pid 5061] getdents64(4, [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./54/bus" [pid 5388] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... rmdir resumed>) = 0 [pid 5061] umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5061] unlink("./54/binderfs") = 0 [pid 5387] +++ exited with 0 +++ [pid 5061] getdents64(3, [pid 5389] <... ioctl resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] close(3 [pid 5056] <... openat resumed>) = 3 [pid 5389] close(3 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5387, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5389] <... close resumed>) = 0 [pid 5388] <... write resumed>) = 524288 [pid 5061] <... close resumed>) = 0 [pid 5389] close(4) = 0 [pid 5389] mkdir("./bus", 0777 [pid 5061] rmdir("./54" [pid 5388] munmap(0x7f138d200000, 138412032) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5058] umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5389] <... mkdir resumed>) = 0 [pid 5061] mkdir("./55", 0777 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5389] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5388] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] <... openat resumed>) = 3 [pid 5388] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... mkdir resumed>) = 0 [pid 5388] close(5 [pid 5389] <... mount resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] newfstatat(3, "", [pid 5389] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5388] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5389] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5389] chdir("./bus") = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5389] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] getdents64(3, [pid 5389] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5388] creat("./file1", 000 [pid 5389] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5388] <... creat resumed>) = 5 [pid 5058] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5388] exit_group(0) = ? [pid 5060] close(3 [pid 5389] <... symlink resumed>) = 0 [pid 5388] +++ exited with 0 +++ [pid 5060] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5389] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5388, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- ./strace-static-x86_64: Process 5390 attached [pid 5390] set_robust_list(0x555556c07660, 24 [pid 5057] umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5390] <... set_robust_list resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5390] chdir("./52" [pid 5057] openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5390] <... chdir resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5390 [pid 5057] <... openat resumed>) = 3 [pid 5390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5057] newfstatat(3, "", [pid 5390] setpgid(0, 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5390] <... setpgid resumed>) = 0 [pid 5390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] getdents64(3, [pid 5390] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5390] write(3, "1000", 4) = 4 [pid 5058] <... umount2 resumed>) = 0 [pid 5390] close(3) = 0 [pid 5390] symlink("/dev/binderfs", "./binderfs") = 0 [ 83.571706][ T5389] loop3: detected capacity change from 0 to 1024 [pid 5390] memfd_create("syzkaller", 0 [pid 5389] <... creat resumed>) = 4 [pid 5058] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5390] <... memfd_create resumed>) = 3 [pid 5390] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5390] 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"..., 524288 [pid 5389] rename("./bus", "./file2" [pid 5061] <... ioctl resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] close(3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./52/bus", [pid 5056] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(AT_FDCWD, "./53/bus", [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5389] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] close(3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5391 [pid 5389] memfd_create("syzkaller", 0 [pid 5058] openat(AT_FDCWD, "./52/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... openat resumed>) = 4 [pid 5057] openat(AT_FDCWD, "./53/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5389] <... memfd_create resumed>) = 5 [pid 5389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... openat resumed>) = 4 [pid 5389] <... mmap resumed>) = 0x7f138d200000 ./strace-static-x86_64: Process 5391 attached [pid 5057] newfstatat(4, "", [pid 5391] set_robust_list(0x555556c07660, 24) = 0 [pid 5390] <... write resumed>) = 524288 [pid 5391] chdir("./53" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5391] <... chdir resumed>) = 0 [pid 5389] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] newfstatat(4, "", [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 ./strace-static-x86_64: Process 5392 attached [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5392 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5392] set_robust_list(0x555556c07660, 24 [pid 5391] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5391] <... prctl resumed>) = 0 [pid 5057] close(4 [pid 5391] setpgid(0, 0) = 0 [pid 5057] <... close resumed>) = 0 [pid 5391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5390] munmap(0x7f138d200000, 138412032 [pid 5057] rmdir("./53/bus" [pid 5392] <... set_robust_list resumed>) = 0 [pid 5391] <... openat resumed>) = 3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5390] <... munmap resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5391] write(3, "1000", 4 [pid 5392] chdir("./55" [pid 5391] <... write resumed>) = 4 [pid 5390] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] getdents64(4, [pid 5392] <... chdir resumed>) = 0 [pid 5391] close(3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5391] <... close resumed>) = 0 [pid 5390] <... openat resumed>) = 4 [pid 5391] symlink("/dev/binderfs", "./binderfs" [pid 5392] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5391] <... symlink resumed>) = 0 [pid 5390] ioctl(4, LOOP_SET_FD, 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5392] <... prctl resumed>) = 0 [pid 5058] close(4 [pid 5391] memfd_create("syzkaller", 0) = 3 [pid 5391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5389] <... write resumed>) = 524288 [pid 5392] setpgid(0, 0 [pid 5058] <... close resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./53/binderfs", [pid 5392] <... setpgid resumed>) = 0 [pid 5391] 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"..., 524288 [pid 5389] munmap(0x7f138d200000, 138412032 [pid 5058] rmdir("./52/bus" [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./53/binderfs" [pid 5392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5389] <... munmap resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5058] umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] newfstatat(AT_FDCWD, "./52/binderfs", [pid 5057] close(3 [pid 5392] <... openat resumed>) = 3 [pid 5389] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... close resumed>) = 0 [pid 5392] write(3, "1000", 4 [pid 5058] unlink("./52/binderfs" [pid 5057] rmdir("./53" [pid 5392] <... write resumed>) = 4 [pid 5392] close(3 [pid 5389] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5392] <... close resumed>) = 0 [pid 5389] close(5 [pid 5058] getdents64(3, [pid 5392] symlink("/dev/binderfs", "./binderfs" [pid 5057] mkdir("./54", 0777 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5391] <... write resumed>) = 524288 [pid 5391] munmap(0x7f138d200000, 138412032 [pid 5392] <... symlink resumed>) = 0 [pid 5391] <... munmap resumed>) = 0 [pid 5058] rmdir("./52" [pid 5391] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] <... mkdir resumed>) = 0 [pid 5391] <... openat resumed>) = 4 [pid 5391] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... rmdir resumed>) = 0 [pid 5392] memfd_create("syzkaller", 0 [pid 5390] <... ioctl resumed>) = 0 [pid 5389] <... close resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] mkdir("./53", 0777 [pid 5390] close(3 [pid 5389] creat("./file1", 000 [pid 5390] <... close resumed>) = 0 [pid 5390] close(4 [pid 5392] <... memfd_create resumed>) = 3 [pid 5390] <... close resumed>) = 0 [pid 5389] <... creat resumed>) = 5 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5390] mkdir("./bus", 0777 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5389] exit_group(0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5391] <... ioctl resumed>) = 0 [pid 5392] <... mmap resumed>) = 0x7f138d200000 [pid 5390] <... mkdir resumed>) = 0 [pid 5389] <... exit_group resumed>) = ? [pid 5058] <... openat resumed>) = 3 [pid 5392] 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"..., 524288 [pid 5391] close(3 [pid 5390] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5391] <... close resumed>) = 0 [pid 5389] +++ exited with 0 +++ [pid 5392] <... write resumed>) = 524288 [pid 5391] close(4 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5389, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5392] munmap(0x7f138d200000, 138412032 [pid 5391] <... close resumed>) = 0 [pid 5390] <... mount resumed>) = 0 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5391] mkdir("./bus", 0777 [pid 5059] <... restart_syscall resumed>) = 0 [pid 5392] <... munmap resumed>) = 0 [pid 5391] <... mkdir resumed>) = 0 [pid 5390] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5391] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5390] <... openat resumed>) = 3 [pid 5392] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5390] chdir("./bus" [pid 5059] umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5392] <... openat resumed>) = 4 [pid 5390] <... chdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5392] ioctl(4, LOOP_SET_FD, 3 [pid 5390] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5390] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... openat resumed>) = 3 [ 83.670078][ T5390] loop4: detected capacity change from 0 to 1024 [ 83.699660][ T5391] loop0: detected capacity change from 0 to 1024 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5391] <... mount resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5391] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5059] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5391] chdir("./bus") = 0 [pid 5391] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5391] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5391] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5390] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5392] <... ioctl resumed>) = 0 [pid 5390] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5392] close(3) = 0 [pid 5392] close(4) = 0 [pid 5392] mkdir("./bus", 0777 [pid 5391] <... creat resumed>) = 4 [pid 5059] <... umount2 resumed>) = 0 [pid 5392] <... mkdir resumed>) = 0 [pid 5391] rename("./bus", "./file2" [pid 5392] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5390] <... creat resumed>) = 4 [pid 5391] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] newfstatat(AT_FDCWD, "./54/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5391] memfd_create("syzkaller", 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5391] <... memfd_create resumed>) = 5 [pid 5059] openat(AT_FDCWD, "./54/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5390] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5059] getdents64(4, [pid 5390] memfd_create("syzkaller", 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5391] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5390] <... memfd_create resumed>) = 5 [pid 5059] rmdir("./54/bus" [pid 5057] <... ioctl resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5059] umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./54/binderfs") = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] close(3 [pid 5391] <... write resumed>) = 524288 [pid 5059] close(3) = 0 [pid 5059] rmdir("./54") = 0 [pid 5059] mkdir("./55", 0777) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5057] <... close resumed>) = 0 [pid 5390] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5390] <... mmap resumed>) = 0x7f138d200000 ./strace-static-x86_64: Process 5393 attached ./strace-static-x86_64: Process 5394 attached [pid 5391] munmap(0x7f138d200000, 138412032 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5394 [pid 5394] set_robust_list(0x555556c07660, 24 [pid 5391] <... munmap resumed>) = 0 [pid 5394] <... set_robust_list resumed>) = 0 [pid 5394] chdir("./53") = 0 [pid 5393] set_robust_list(0x555556c07660, 24 [pid 5394] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5390] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5393 [pid 5393] <... set_robust_list resumed>) = 0 [pid 5391] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5393] chdir("./54" [pid 5394] <... prctl resumed>) = 0 [pid 5391] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5393] <... chdir resumed>) = 0 [pid 5394] setpgid(0, 0 [pid 5391] close(5 [pid 5393] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5394] <... setpgid resumed>) = 0 [pid 5391] <... close resumed>) = 0 [pid 5393] <... prctl resumed>) = 0 [pid 5393] setpgid(0, 0 [pid 5394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5392] <... mount resumed>) = 0 [pid 5392] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5394] <... openat resumed>) = 3 [pid 5394] write(3, "1000", 4) = 4 [pid 5394] close(3 [pid 5393] <... setpgid resumed>) = 0 [pid 5394] <... close resumed>) = 0 [pid 5392] <... openat resumed>) = 3 [pid 5393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5394] symlink("/dev/binderfs", "./binderfs" [pid 5392] chdir("./bus" [pid 5393] <... openat resumed>) = 3 [pid 5394] <... symlink resumed>) = 0 [pid 5393] write(3, "1000", 4 [pid 5394] memfd_create("syzkaller", 0 [pid 5392] <... chdir resumed>) = 0 [pid 5393] <... write resumed>) = 4 [pid 5392] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5394] <... memfd_create resumed>) = 3 [ 83.745898][ T5392] loop5: detected capacity change from 0 to 1024 [pid 5391] creat("./file1", 000 [pid 5393] close(3 [pid 5394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5392] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5390] <... write resumed>) = 524288 [pid 5394] <... mmap resumed>) = 0x7f138d200000 [pid 5391] <... creat resumed>) = 5 [pid 5393] <... close resumed>) = 0 [pid 5394] 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"..., 524288 [pid 5392] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5391] exit_group(0 [pid 5390] munmap(0x7f138d200000, 138412032 [pid 5393] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5391] <... exit_group resumed>) = ? [pid 5390] <... munmap resumed>) = 0 [pid 5393] memfd_create("syzkaller", 0 [pid 5391] +++ exited with 0 +++ [pid 5390] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5393] <... memfd_create resumed>) = 3 [pid 5390] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... ioctl resumed>) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5391, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5059] close(3 [pid 5393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5392] <... symlink resumed>) = 0 [pid 5390] close(5 [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5395 ./strace-static-x86_64: Process 5395 attached [pid 5395] set_robust_list(0x555556c07660, 24) = 0 [pid 5394] <... write resumed>) = 524288 [pid 5395] chdir("./55" [pid 5393] <... mmap resumed>) = 0x7f138d200000 [pid 5392] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5390] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5395] <... chdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5395] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5393] 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"..., 524288 [pid 5390] creat("./file1", 000 [pid 5395] <... prctl resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5395] setpgid(0, 0 [pid 5394] munmap(0x7f138d200000, 138412032 [pid 5056] newfstatat(3, "", [pid 5395] <... setpgid resumed>) = 0 [pid 5394] <... munmap resumed>) = 0 [pid 5392] <... creat resumed>) = 4 [pid 5390] <... creat resumed>) = 5 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5392] rename("./bus", "./file2" [pid 5395] <... openat resumed>) = 3 [pid 5056] getdents64(3, [pid 5395] write(3, "1000", 4) = 4 [pid 5394] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5395] close(3 [pid 5394] ioctl(4, LOOP_SET_FD, 3 [pid 5395] <... close resumed>) = 0 [pid 5390] exit_group(0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5390] <... exit_group resumed>) = ? [pid 5056] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5395] symlink("/dev/binderfs", "./binderfs" [pid 5392] <... rename resumed>) = -1 EEXIST (File exists) [pid 5395] <... symlink resumed>) = 0 [pid 5393] <... write resumed>) = 524288 [pid 5392] memfd_create("syzkaller", 0 [pid 5390] +++ exited with 0 +++ [pid 5392] <... memfd_create resumed>) = 5 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5390, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5395] memfd_create("syzkaller", 0 [pid 5392] <... mmap resumed>) = 0x7f138d200000 [pid 5060] umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", [pid 5395] <... memfd_create resumed>) = 3 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] getdents64(3, [pid 5056] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5395] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5395] 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"..., 524288 [pid 5393] munmap(0x7f138d200000, 138412032 [pid 5060] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5393] <... munmap resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./53/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5394] <... ioctl resumed>) = 0 [pid 5056] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5394] close(3 [pid 5393] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5394] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5394] close(4 [pid 5056] openat(AT_FDCWD, "./53/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5394] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5393] <... openat resumed>) = 4 [pid 5394] mkdir("./bus", 0777 [pid 5056] newfstatat(4, "", [pid 5393] ioctl(4, LOOP_SET_FD, 3 [pid 5394] <... mkdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5394] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5056] getdents64(4, [pid 5392] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... umount2 resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5394] <... mount resumed>) = 0 [pid 5392] <... write resumed>) = 524288 [pid 5056] getdents64(4, [pid 5394] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5394] <... openat resumed>) = 3 [pid 5056] close(4 [pid 5395] <... write resumed>) = 524288 [pid 5394] chdir("./bus" [pid 5056] <... close resumed>) = 0 [pid 5394] <... chdir resumed>) = 0 [pid 5395] munmap(0x7f138d200000, 138412032 [pid 5393] <... ioctl resumed>) = 0 [pid 5392] munmap(0x7f138d200000, 138412032 [pid 5060] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5394] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5056] rmdir("./53/bus" [pid 5395] <... munmap resumed>) = 0 [pid 5392] <... munmap resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5395] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5392] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] newfstatat(AT_FDCWD, "./52/bus", [ 83.857298][ T5394] loop2: detected capacity change from 0 to 1024 [ 83.884492][ T5393] loop1: detected capacity change from 0 to 1024 [pid 5395] <... openat resumed>) = 4 [pid 5393] close(3 [pid 5394] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5392] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5395] ioctl(4, LOOP_SET_FD, 3 [pid 5393] <... close resumed>) = 0 [pid 5394] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5392] close(5 [pid 5060] umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5395] <... ioctl resumed>) = 0 [pid 5393] close(4 [pid 5394] <... symlink resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5394] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5056] newfstatat(AT_FDCWD, "./53/binderfs", [pid 5394] <... creat resumed>) = 4 [pid 5392] <... close resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./52/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5394] rename("./bus", "./file2" [pid 5395] close(3 [pid 5393] <... close resumed>) = 0 [pid 5392] creat("./file1", 000 [pid 5060] <... openat resumed>) = 4 [pid 5056] unlink("./53/binderfs" [pid 5393] mkdir("./bus", 0777 [pid 5060] newfstatat(4, "", [pid 5056] <... unlink resumed>) = 0 [pid 5056] getdents64(3, [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5395] <... close resumed>) = 0 [pid 5393] <... mkdir resumed>) = 0 [pid 5394] <... rename resumed>) = -1 EEXIST (File exists) [pid 5392] <... creat resumed>) = 5 [pid 5060] getdents64(4, [pid 5056] close(3 [pid 5395] close(4 [pid 5394] memfd_create("syzkaller", 0 [pid 5392] exit_group(0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... close resumed>) = 0 [pid 5395] <... close resumed>) = 0 [pid 5393] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5394] <... memfd_create resumed>) = 5 [pid 5392] <... exit_group resumed>) = ? [pid 5060] getdents64(4, [pid 5056] rmdir("./53" [pid 5395] mkdir("./bus", 0777 [pid 5394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5392] +++ exited with 0 +++ [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5395] <... mkdir resumed>) = 0 [pid 5060] close(4 [pid 5056] <... rmdir resumed>) = 0 [pid 5394] <... mmap resumed>) = 0x7f138d200000 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5392, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5060] <... close resumed>) = 0 [pid 5056] mkdir("./54", 0777 [pid 5395] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] rmdir("./52/bus" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... rmdir resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] <... openat resumed>) = 3 [pid 5060] newfstatat(AT_FDCWD, "./52/binderfs", [pid 5061] newfstatat(3, "", [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] unlink("./52/binderfs" [pid 5056] <... openat resumed>) = 3 [pid 5393] <... mount resumed>) = 0 [pid 5061] getdents64(3, [pid 5060] <... unlink resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5393] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5394] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] getdents64(3, [pid 5393] <... openat resumed>) = 3 [pid 5061] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3 [pid 5393] chdir("./bus" [pid 5060] <... close resumed>) = 0 [ 83.917734][ T5395] loop3: detected capacity change from 0 to 1024 [pid 5393] <... chdir resumed>) = 0 [pid 5060] rmdir("./52") = 0 [pid 5393] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] mkdir("./53", 0777 [pid 5393] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5394] <... write resumed>) = 524288 [pid 5060] <... mkdir resumed>) = 0 [pid 5393] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] <... umount2 resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5061] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5394] munmap(0x7f138d200000, 138412032 [pid 5061] newfstatat(AT_FDCWD, "./55/bus", [pid 5395] <... mount resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5393] <... symlink resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5061] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5395] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5393] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5395] chdir("./bus" [pid 5394] <... munmap resumed>) = 0 [pid 5061] openat(AT_FDCWD, "./55/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5395] <... chdir resumed>) = 0 [pid 5394] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5395] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5394] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... openat resumed>) = 4 [pid 5395] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5394] close(5 [pid 5061] newfstatat(4, "", [pid 5393] <... creat resumed>) = 4 [pid 5395] <... symlink resumed>) = 0 [pid 5393] rename("./bus", "./file2" [pid 5395] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5393] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] getdents64(4, [pid 5393] memfd_create("syzkaller", 0) = 5 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5393] <... mmap resumed>) = 0x7f138d200000 [pid 5061] rmdir("./55/bus" [pid 5395] <... creat resumed>) = 4 [pid 5395] rename("./bus", "./file2" [pid 5393] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5394] <... close resumed>) = 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5395] <... rename resumed>) = -1 EEXIST (File exists) [pid 5395] memfd_create("syzkaller", 0 [pid 5061] umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5395] <... memfd_create resumed>) = 5 [pid 5393] <... write resumed>) = 524288 [pid 5394] creat("./file1", 000 [pid 5061] unlink("./55/binderfs" [pid 5056] <... ioctl resumed>) = 0 [pid 5393] munmap(0x7f138d200000, 138412032) = 0 [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5393] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5393] close(5 [pid 5395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5393] <... close resumed>) = 0 [pid 5061] <... unlink resumed>) = 0 [pid 5061] getdents64(3, ./strace-static-x86_64: Process 5396 attached [pid 5395] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... ioctl resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5396] set_robust_list(0x555556c07660, 24) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5396 [pid 5396] chdir("./54") = 0 [pid 5396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5396] setpgid(0, 0) = 0 [pid 5396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5393] creat("./file1", 000 [pid 5061] close(3 [pid 5396] write(3, "1000", 4 [pid 5060] close(3 [pid 5396] <... write resumed>) = 4 [pid 5396] close(3) = 0 [pid 5396] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5396] <... symlink resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5394] <... creat resumed>) = 5 [pid 5061] rmdir("./55" [pid 5394] exit_group(0 [pid 5396] memfd_create("syzkaller", 0) = 3 [pid 5394] <... exit_group resumed>) = ? [pid 5061] <... rmdir resumed>) = 0 [pid 5396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5397 attached ) = 0x7f138d200000 [pid 5393] <... creat resumed>) = 5 [pid 5397] set_robust_list(0x555556c07660, 24 [pid 5396] 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"..., 524288 [pid 5394] +++ exited with 0 +++ [pid 5061] mkdir("./56", 0777 [pid 5397] <... set_robust_list resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5397 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5394, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5397] chdir("./53" [pid 5061] <... mkdir resumed>) = 0 [pid 5397] <... chdir resumed>) = 0 [pid 5397] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5397] <... prctl resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5397] setpgid(0, 0 [pid 5058] openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5397] <... setpgid resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] newfstatat(3, "", [pid 5397] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5397] write(3, "1000", 4) = 4 [pid 5397] close(3) = 0 [pid 5397] symlink("/dev/binderfs", "./binderfs" [pid 5058] getdents64(3, [pid 5397] <... symlink resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5397] memfd_create("syzkaller", 0) = 3 [pid 5397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5396] <... write resumed>) = 524288 [pid 5397] <... mmap resumed>) = 0x7f138d200000 [pid 5393] exit_group(0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5393] <... exit_group resumed>) = ? [pid 5061] <... openat resumed>) = 3 [pid 5393] +++ exited with 0 +++ [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5058] <... umount2 resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5393, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5057] umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5395] <... write resumed>) = 524288 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5396] munmap(0x7f138d200000, 138412032 [pid 5057] <... openat resumed>) = 3 [pid 5395] munmap(0x7f138d200000, 138412032 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5397] 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"..., 524288 [pid 5396] <... munmap resumed>) = 0 [pid 5057] getdents64(3, [pid 5058] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5397] <... write resumed>) = 524288 [pid 5396] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5395] <... munmap resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./53/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./53/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5396] <... openat resumed>) = 4 [pid 5395] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... openat resumed>) = 4 [pid 5058] newfstatat(4, "", [pid 5396] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5395] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] getdents64(4, [pid 5395] close(5 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./53/bus") = 0 [pid 5058] umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./53/binderfs") = 0 [pid 5397] munmap(0x7f138d200000, 138412032 [pid 5058] getdents64(3, [pid 5397] <... munmap resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5058] rmdir("./53" [pid 5397] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] <... rmdir resumed>) = 0 [pid 5397] <... openat resumed>) = 4 [pid 5395] <... close resumed>) = 0 [pid 5058] mkdir("./54", 0777) = 0 [pid 5397] ioctl(4, LOOP_SET_FD, 3 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5395] creat("./file1", 000 [pid 5397] <... ioctl resumed>) = 0 [pid 5396] <... ioctl resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5397] close(3 [pid 5396] close(3 [pid 5395] <... creat resumed>) = 5 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5397] <... close resumed>) = 0 [pid 5396] <... close resumed>) = 0 [pid 5395] exit_group(0 [pid 5061] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5397] close(4 [pid 5396] close(4 [pid 5395] <... exit_group resumed>) = ? [pid 5061] close(3) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [ 84.070915][ T5396] loop0: detected capacity change from 0 to 1024 [ 84.087095][ T5397] loop4: detected capacity change from 0 to 1024 [pid 5057] newfstatat(AT_FDCWD, "./54/bus", ./strace-static-x86_64: Process 5398 attached [pid 5397] <... close resumed>) = 0 [pid 5396] <... close resumed>) = 0 [pid 5395] +++ exited with 0 +++ [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5395, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5398 [pid 5398] set_robust_list(0x555556c07660, 24 [pid 5396] mkdir("./bus", 0777 [pid 5398] <... set_robust_list resumed>) = 0 [pid 5059] umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5398] chdir("./56" [pid 5059] openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] close(3 [pid 5057] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5397] mkdir("./bus", 0777 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(3, "", [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] openat(AT_FDCWD, "./54/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5398] <... chdir resumed>) = 0 [pid 5397] <... mkdir resumed>) = 0 [pid 5396] <... mkdir resumed>) = 0 [pid 5059] getdents64(3, [pid 5057] <... openat resumed>) = 4 [pid 5398] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] newfstatat(4, "", [pid 5398] <... prctl resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5398] setpgid(0, 0 [pid 5397] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5396] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5398] <... setpgid resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5399 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./54/bus") = 0 [pid 5057] umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 5399 attached [pid 5399] set_robust_list(0x555556c07660, 24) = 0 [pid 5057] unlink("./54/binderfs" [pid 5399] chdir("./54" [pid 5398] <... openat resumed>) = 3 [pid 5057] <... unlink resumed>) = 0 [pid 5399] <... chdir resumed>) = 0 [pid 5057] getdents64(3, [pid 5399] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5399] <... prctl resumed>) = 0 [pid 5057] close(3 [pid 5399] setpgid(0, 0 [pid 5057] <... close resumed>) = 0 [pid 5399] <... setpgid resumed>) = 0 [pid 5057] rmdir("./54" [pid 5399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5398] write(3, "1000", 4 [pid 5057] <... rmdir resumed>) = 0 [pid 5399] <... openat resumed>) = 3 [pid 5399] write(3, "1000", 4 [pid 5057] mkdir("./55", 0777 [pid 5399] <... write resumed>) = 4 [pid 5398] <... write resumed>) = 4 [pid 5059] <... umount2 resumed>) = 0 [pid 5399] close(3) = 0 [pid 5399] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5399] memfd_create("syzkaller", 0 [pid 5398] close(3 [pid 5057] <... mkdir resumed>) = 0 [pid 5399] <... memfd_create resumed>) = 3 [pid 5399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5399] 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"..., 524288 [pid 5398] <... close resumed>) = 0 [pid 5397] <... mount resumed>) = 0 [pid 5396] <... mount resumed>) = 0 [pid 5059] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5398] symlink("/dev/binderfs", "./binderfs" [pid 5397] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5396] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5397] <... openat resumed>) = 3 [pid 5396] <... openat resumed>) = 3 [pid 5057] <... openat resumed>) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5398] <... symlink resumed>) = 0 [pid 5397] chdir("./bus" [pid 5396] chdir("./bus" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5397] <... chdir resumed>) = 0 [pid 5396] <... chdir resumed>) = 0 [pid 5397] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] newfstatat(AT_FDCWD, "./55/bus", [pid 5397] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5397] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./55/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5397] <... symlink resumed>) = 0 [pid 5398] memfd_create("syzkaller", 0 [pid 5396] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] newfstatat(4, "", [pid 5399] <... write resumed>) = 524288 [pid 5398] <... memfd_create resumed>) = 3 [pid 5397] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5396] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, [pid 5398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5396] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5398] <... mmap resumed>) = 0x7f138d200000 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5398] 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"..., 524288 [pid 5059] close(4) = 0 [pid 5059] rmdir("./55/bus") = 0 [pid 5059] umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./55/binderfs" [pid 5399] munmap(0x7f138d200000, 138412032 [pid 5059] <... unlink resumed>) = 0 [pid 5399] <... munmap resumed>) = 0 [pid 5399] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5398] <... write resumed>) = 524288 [pid 5059] getdents64(3, [pid 5057] <... ioctl resumed>) = 0 [pid 5399] <... openat resumed>) = 4 [pid 5397] <... creat resumed>) = 4 [pid 5057] close(3 [pid 5399] ioctl(4, LOOP_SET_FD, 3 [pid 5397] rename("./bus", "./file2" [pid 5057] <... close resumed>) = 0 [pid 5396] <... symlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] close(3) = 0 [pid 5059] rmdir("./55") = 0 [pid 5396] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] mkdir("./56", 0777) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5398] munmap(0x7f138d200000, 138412032) = 0 ./strace-static-x86_64: Process 5400 attached [pid 5399] <... ioctl resumed>) = 0 [pid 5398] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5397] <... rename resumed>) = -1 EEXIST (File exists) [pid 5400] set_robust_list(0x555556c07660, 24 [pid 5399] close(3 [pid 5398] <... openat resumed>) = 4 [pid 5397] memfd_create("syzkaller", 0 [pid 5400] <... set_robust_list resumed>) = 0 [pid 5397] <... memfd_create resumed>) = 5 [pid 5400] chdir("./55" [pid 5397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5400] <... chdir resumed>) = 0 [pid 5399] <... close resumed>) = 0 [pid 5398] ioctl(4, LOOP_SET_FD, 3 [pid 5397] <... mmap resumed>) = 0x7f138d200000 [pid 5400] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5399] close(4 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5400 [pid 5400] <... prctl resumed>) = 0 [pid 5397] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5396] <... creat resumed>) = 4 [pid 5400] setpgid(0, 0 [pid 5396] rename("./bus", "./file2" [pid 5400] <... setpgid resumed>) = 0 [pid 5399] <... close resumed>) = 0 [pid 5400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5399] mkdir("./bus", 0777 [pid 5400] <... openat resumed>) = 3 [pid 5399] <... mkdir resumed>) = 0 [pid 5400] write(3, "1000", 4 [pid 5399] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5400] <... write resumed>) = 4 [pid 5400] close(3) = 0 [pid 5400] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5400] memfd_create("syzkaller", 0) = 3 [pid 5397] <... write resumed>) = 524288 [pid 5396] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... ioctl resumed>) = 0 [pid 5400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5400] 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"..., 524288) = 524288 [pid 5396] memfd_create("syzkaller", 0) = 5 [pid 5399] <... mount resumed>) = 0 [pid 5398] <... ioctl resumed>) = 0 [pid 5399] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5398] close(3 [pid 5399] <... openat resumed>) = 3 [pid 5399] chdir("./bus" [pid 5398] <... close resumed>) = 0 [pid 5399] <... chdir resumed>) = 0 [pid 5398] close(4 [pid 5399] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5398] <... close resumed>) = 0 [pid 5399] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5398] mkdir("./bus", 0777 [pid 5397] munmap(0x7f138d200000, 138412032 [pid 5399] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5398] <... mkdir resumed>) = 0 [pid 5397] <... munmap resumed>) = 0 [pid 5400] munmap(0x7f138d200000, 138412032 [pid 5399] <... symlink resumed>) = 0 [pid 5398] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5397] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5400] <... munmap resumed>) = 0 [pid 5399] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5397] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] close(3 [pid 5396] <... mmap resumed>) = 0x7f138d200000 [pid 5397] close(5 [pid 5059] <... close resumed>) = 0 [pid 5400] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5396] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [ 84.207607][ T5399] loop2: detected capacity change from 0 to 1024 [ 84.219495][ T5398] loop5: detected capacity change from 0 to 1024 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5400] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 5401 attached [pid 5397] <... close resumed>) = 0 [pid 5401] set_robust_list(0x555556c07660, 24) = 0 [pid 5399] <... creat resumed>) = 4 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5401 [pid 5401] chdir("./56" [pid 5399] rename("./bus", "./file2" [pid 5401] <... chdir resumed>) = 0 [pid 5399] <... rename resumed>) = -1 EEXIST (File exists) [pid 5401] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5399] memfd_create("syzkaller", 0 [pid 5401] <... prctl resumed>) = 0 [pid 5399] <... memfd_create resumed>) = 5 [pid 5401] setpgid(0, 0 [pid 5399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5401] <... setpgid resumed>) = 0 [pid 5399] <... mmap resumed>) = 0x7f138d200000 [pid 5401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5399] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5397] creat("./file1", 000 [pid 5396] <... write resumed>) = 524288 [pid 5401] <... openat resumed>) = 3 [pid 5401] write(3, "1000", 4) = 4 [pid 5401] close(3) = 0 [pid 5401] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5401] memfd_create("syzkaller", 0) = 3 [pid 5398] <... mount resumed>) = 0 [pid 5401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5398] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5397] <... creat resumed>) = 5 [pid 5401] <... mmap resumed>) = 0x7f138d200000 [pid 5398] <... openat resumed>) = 3 [pid 5397] exit_group(0 [pid 5401] 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"..., 524288 [pid 5398] chdir("./bus" [pid 5397] <... exit_group resumed>) = ? [pid 5398] <... chdir resumed>) = 0 [pid 5397] +++ exited with 0 +++ [pid 5398] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5397, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5398] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5398] <... symlink resumed>) = 0 [pid 5396] munmap(0x7f138d200000, 138412032 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5398] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5398] <... creat resumed>) = 4 [pid 5396] <... munmap resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5401] <... write resumed>) = 524288 [pid 5399] <... write resumed>) = 524288 [pid 5398] rename("./bus", "./file2" [pid 5396] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5060] newfstatat(3, "", [pid 5400] <... ioctl resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5396] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5400] close(3 [pid 5396] close(5 [pid 5060] getdents64(3, [pid 5400] <... close resumed>) = 0 [pid 5398] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5400] close(4 [pid 5398] memfd_create("syzkaller", 0 [pid 5060] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5400] <... close resumed>) = 0 [pid 5398] <... memfd_create resumed>) = 5 [pid 5400] mkdir("./bus", 0777 [pid 5398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5400] <... mkdir resumed>) = 0 [pid 5398] <... mmap resumed>) = 0x7f138d200000 [pid 5400] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5398] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5396] <... close resumed>) = 0 [ 84.261335][ T5400] loop1: detected capacity change from 0 to 1024 [pid 5396] creat("./file1", 000 [pid 5401] munmap(0x7f138d200000, 138412032) = 0 [pid 5401] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5401] ioctl(4, LOOP_SET_FD, 3 [pid 5400] <... mount resumed>) = 0 [pid 5399] munmap(0x7f138d200000, 138412032 [pid 5060] <... umount2 resumed>) = 0 [pid 5399] <... munmap resumed>) = 0 [pid 5398] <... write resumed>) = 524288 [pid 5396] <... creat resumed>) = 5 [pid 5400] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5399] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5399] close(5 [pid 5060] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5400] chdir("./bus" [pid 5399] <... close resumed>) = 0 [pid 5396] exit_group(0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5400] <... chdir resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./53/bus", [pid 5400] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5400] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5400] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5398] munmap(0x7f138d200000, 138412032 [pid 5060] openat(AT_FDCWD, "./53/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5398] <... munmap resumed>) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5060] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5400] <... symlink resumed>) = 0 [pid 5398] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] getdents64(4, [pid 5400] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5399] creat("./file1", 000 [pid 5398] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5398] close(5 [pid 5396] <... exit_group resumed>) = ? [pid 5060] close(4) = 0 [pid 5060] rmdir("./53/bus") = 0 [pid 5060] umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./53/binderfs" [pid 5396] +++ exited with 0 +++ [pid 5060] <... unlink resumed>) = 0 [pid 5060] getdents64(3, [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5396, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5400] <... creat resumed>) = 4 [pid 5398] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5400] rename("./bus", "./file2" [pid 5399] <... creat resumed>) = 5 [pid 5060] close(3 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5401] <... ioctl resumed>) = 0 [pid 5399] exit_group(0 [pid 5060] <... close resumed>) = 0 [pid 5401] close(3 [pid 5400] <... rename resumed>) = -1 EEXIST (File exists) [pid 5399] <... exit_group resumed>) = ? [pid 5060] rmdir("./53" [pid 5401] <... close resumed>) = 0 [pid 5400] memfd_create("syzkaller", 0 [pid 5399] +++ exited with 0 +++ [pid 5398] creat("./file1", 000 [pid 5060] <... rmdir resumed>) = 0 [pid 5056] umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5401] close(4 [pid 5400] <... memfd_create resumed>) = 5 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5401] <... close resumed>) = 0 [pid 5400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... restart_syscall resumed>) = 0 [pid 5056] openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5400] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... openat resumed>) = 3 [pid 5060] mkdir("./54", 0777 [pid 5056] newfstatat(3, "", [pid 5401] mkdir("./bus", 0777 [pid 5400] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... mkdir resumed>) = 0 [pid 5058] umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5401] <... mkdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(3, [pid 5058] openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5401] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] newfstatat(3, "", [pid 5056] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [ 84.316107][ T5401] loop3: detected capacity change from 0 to 1024 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5056] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5398] <... creat resumed>) = 5 [pid 5398] exit_group(0) = ? [pid 5400] <... write resumed>) = 524288 [pid 5398] +++ exited with 0 +++ [pid 5401] <... mount resumed>) = 0 [pid 5400] munmap(0x7f138d200000, 138412032 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5398, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5401] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5401] chdir("./bus" [pid 5400] <... munmap resumed>) = 0 [pid 5058] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5401] <... chdir resumed>) = 0 [pid 5401] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5401] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5400] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5061] umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5401] <... symlink resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./54/bus", [pid 5056] newfstatat(AT_FDCWD, "./54/bus", [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5401] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5400] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5401] <... creat resumed>) = 4 [pid 5400] close(5 [pid 5061] <... openat resumed>) = 3 [pid 5058] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5401] rename("./bus", "./file2" [pid 5061] newfstatat(3, "", [pid 5401] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5401] memfd_create("syzkaller", 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] openat(AT_FDCWD, "./54/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "./54/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5401] <... memfd_create resumed>) = 5 [pid 5061] getdents64(3, [pid 5401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... openat resumed>) = 4 [pid 5401] <... mmap resumed>) = 0x7f138d200000 [pid 5056] <... openat resumed>) = 4 [pid 5400] <... close resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] newfstatat(4, "", [pid 5056] newfstatat(4, "", [pid 5401] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5400] creat("./file1", 000 [pid 5061] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5056] getdents64(4, [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, [pid 5056] getdents64(4, [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5056] close(4 [pid 5060] <... ioctl resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5056] rmdir("./54/bus" [pid 5058] rmdir("./54/bus" [pid 5056] <... rmdir resumed>) = 0 [pid 5401] <... write resumed>) = 524288 [pid 5058] <... rmdir resumed>) = 0 [pid 5058] umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./54/binderfs", [pid 5056] newfstatat(AT_FDCWD, "./54/binderfs", [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./54/binderfs" [pid 5056] unlink("./54/binderfs" [pid 5401] munmap(0x7f138d200000, 138412032 [pid 5400] <... creat resumed>) = 5 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] close(3 [pid 5058] <... unlink resumed>) = 0 [pid 5400] exit_group(0 [pid 5056] <... unlink resumed>) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5401] <... munmap resumed>) = 0 [pid 5400] <... exit_group resumed>) = ? [pid 5060] <... close resumed>) = 0 [pid 5058] close(3) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] rmdir("./54" [pid 5056] close(3 [pid 5058] <... rmdir resumed>) = 0 [pid 5401] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5400] +++ exited with 0 +++ [pid 5061] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] mkdir("./55", 0777 [pid 5056] <... close resumed>) = 0 [pid 5401] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... mkdir resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5400, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] rmdir("./54"./strace-static-x86_64: Process 5402 attached [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5402] set_robust_list(0x555556c07660, 24 [pid 5401] close(5 [pid 5061] newfstatat(AT_FDCWD, "./56/bus", [pid 5057] umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5402] <... set_robust_list resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] mkdir("./55", 0777 [pid 5402] chdir("./54" [pid 5061] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5057] openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5402] <... chdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5402 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... mkdir resumed>) = 0 [pid 5402] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] newfstatat(3, "", [pid 5402] <... prctl resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5402] setpgid(0, 0 [pid 5061] openat(AT_FDCWD, "./56/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] getdents64(3, [pid 5402] <... setpgid resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... openat resumed>) = 3 [pid 5402] <... openat resumed>) = 3 [pid 5402] write(3, "1000", 4) = 4 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5402] close(3) = 0 [pid 5402] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5402] memfd_create("syzkaller", 0 [pid 5401] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5057] <... umount2 resumed>) = 0 [pid 5402] <... memfd_create resumed>) = 3 [pid 5402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5401] creat("./file1", 000 [pid 5061] newfstatat(4, "", [pid 5057] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5402] 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"..., 524288 [pid 5061] close(4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... close resumed>) = 0 [pid 5061] rmdir("./56/bus") = 0 [pid 5057] newfstatat(AT_FDCWD, "./55/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./56/binderfs", [pid 5057] openat(AT_FDCWD, "./55/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./56/binderfs") = 0 [pid 5061] getdents64(3, [pid 5402] <... write resumed>) = 524288 [pid 5401] <... creat resumed>) = 5 [pid 5057] <... openat resumed>) = 4 [pid 5402] munmap(0x7f138d200000, 138412032 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5402] <... munmap resumed>) = 0 [pid 5401] exit_group(0 [pid 5061] close(3 [pid 5057] newfstatat(4, "", [pid 5061] <... close resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] rmdir("./56" [pid 5402] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5401] <... exit_group resumed>) = ? [pid 5057] getdents64(4, [pid 5061] <... rmdir resumed>) = 0 [pid 5402] <... openat resumed>) = 4 [pid 5402] ioctl(4, LOOP_SET_FD, 3 [pid 5061] mkdir("./57", 0777 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5401] +++ exited with 0 +++ [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./55/bus") = 0 [pid 5057] umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5402] <... ioctl resumed>) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5402] close(3) = 0 [pid 5402] close(4) = 0 [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./55/binderfs", [pid 5402] mkdir("./bus", 0777 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5402] <... mkdir resumed>) = 0 [pid 5057] unlink("./55/binderfs") = 0 [pid 5057] getdents64(3, [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5403 [pid 5058] close(3) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] close(3 [pid 5402] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] <... close resumed>) = 0 ./strace-static-x86_64: Process 5403 attached [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5401, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5057] rmdir("./55") = 0 [pid 5057] mkdir("./56", 0777) = 0 ./strace-static-x86_64: Process 5404 attached [pid 5404] set_robust_list(0x555556c07660, 24 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5404 [pid 5403] set_robust_list(0x555556c07660, 24 [pid 5402] <... mount resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5403] <... set_robust_list resumed>) = 0 [pid 5402] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... openat resumed>) = 3 [pid 5404] <... set_robust_list resumed>) = 0 [pid 5404] chdir("./55" [pid 5403] chdir("./55" [pid 5402] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5402] chdir("./bus" [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5404] <... chdir resumed>) = 0 [pid 5402] <... chdir resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5403] <... chdir resumed>) = 0 [pid 5404] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5402] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5404] <... prctl resumed>) = 0 [pid 5403] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5402] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] newfstatat(3, "", [pid 5404] setpgid(0, 0 [pid 5403] <... prctl resumed>) = 0 [pid 5402] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5404] <... setpgid resumed>) = 0 [pid 5403] setpgid(0, 0 [pid 5404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5403] <... setpgid resumed>) = 0 [pid 5059] getdents64(3, [pid 5404] <... openat resumed>) = 3 [pid 5404] write(3, "1000", 4 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5404] <... write resumed>) = 4 [pid 5403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5402] <... symlink resumed>) = 0 [pid 5404] close(3) = 0 [pid 5404] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5402] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5403] <... openat resumed>) = 3 [pid 5403] write(3, "1000", 4 [pid 5404] memfd_create("syzkaller", 0 [pid 5403] <... write resumed>) = 4 [pid 5403] close(3) = 0 [pid 5403] symlink("/dev/binderfs", "./binderfs" [pid 5404] <... memfd_create resumed>) = 3 [pid 5404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5403] <... symlink resumed>) = 0 [pid 5404] <... mmap resumed>) = 0x7f138d200000 [pid 5404] 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"..., 524288 [pid 5403] memfd_create("syzkaller", 0 [pid 5402] <... creat resumed>) = 4 [pid 5402] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5402] memfd_create("syzkaller", 0) = 5 [pid 5402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5403] <... memfd_create resumed>) = 3 [pid 5059] <... umount2 resumed>) = 0 [ 84.485368][ T5402] loop4: detected capacity change from 0 to 1024 [pid 5403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5402] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5404] <... write resumed>) = 524288 [pid 5403] <... mmap resumed>) = 0x7f138d200000 [pid 5059] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5404] munmap(0x7f138d200000, 138412032) = 0 [pid 5403] 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"..., 524288 [pid 5059] newfstatat(AT_FDCWD, "./56/bus", [pid 5404] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... ioctl resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5059] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5402] <... write resumed>) = 524288 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./56/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] close(3 [pid 5059] <... openat resumed>) = 4 [pid 5404] <... openat resumed>) = 4 [pid 5404] ioctl(4, LOOP_SET_FD, 3 [pid 5403] <... write resumed>) = 524288 [pid 5061] <... close resumed>) = 0 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5403] munmap(0x7f138d200000, 138412032 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] getdents64(4, [pid 5402] munmap(0x7f138d200000, 138412032) = 0 [pid 5402] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] close(3) = 0 ./strace-static-x86_64: Process 5405 attached [pid 5402] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5405] set_robust_list(0x555556c07660, 24 [pid 5403] <... munmap resumed>) = 0 [pid 5059] getdents64(4, [pid 5402] close(5 [pid 5405] <... set_robust_list resumed>) = 0 [pid 5403] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5402] <... close resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5405 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4./strace-static-x86_64: Process 5406 attached [pid 5405] chdir("./57" [pid 5403] <... openat resumed>) = 4 [pid 5059] <... close resumed>) = 0 [pid 5406] set_robust_list(0x555556c07660, 24 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5406 [pid 5406] <... set_robust_list resumed>) = 0 [pid 5406] chdir("./56") = 0 [pid 5406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5406] setpgid(0, 0) = 0 [pid 5406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] rmdir("./56/bus" [pid 5403] ioctl(4, LOOP_SET_FD, 3 [pid 5406] <... openat resumed>) = 3 [pid 5059] <... rmdir resumed>) = 0 [pid 5406] write(3, "1000", 4 [pid 5405] <... chdir resumed>) = 0 [pid 5402] creat("./file1", 000 [pid 5059] umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5405] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5404] <... ioctl resumed>) = 0 [pid 5405] <... prctl resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./56/binderfs", [pid 5404] close(3) = 0 [pid 5404] close(4 [pid 5406] <... write resumed>) = 4 [pid 5405] setpgid(0, 0 [pid 5404] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./56/binderfs" [pid 5406] close(3 [pid 5404] mkdir("./bus", 0777 [pid 5059] <... unlink resumed>) = 0 [pid 5405] <... setpgid resumed>) = 0 [pid 5059] getdents64(3, [pid 5406] <... close resumed>) = 0 [pid 5405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5404] <... mkdir resumed>) = 0 [pid 5402] <... creat resumed>) = 5 [pid 5406] symlink("/dev/binderfs", "./binderfs" [pid 5404] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5402] exit_group(0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5405] <... openat resumed>) = 3 [pid 5402] <... exit_group resumed>) = ? [pid 5405] write(3, "1000", 4 [pid 5059] close(3 [pid 5405] <... write resumed>) = 4 [pid 5406] <... symlink resumed>) = 0 [pid 5405] close(3 [pid 5404] <... mount resumed>) = 0 [pid 5403] <... ioctl resumed>) = 0 [pid 5402] +++ exited with 0 +++ [pid 5059] <... close resumed>) = 0 [pid 5406] memfd_create("syzkaller", 0 [pid 5405] <... close resumed>) = 0 [pid 5404] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5402, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5059] rmdir("./56" [pid 5406] <... memfd_create resumed>) = 3 [pid 5405] symlink("/dev/binderfs", "./binderfs" [pid 5404] <... openat resumed>) = 3 [pid 5406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5404] chdir("./bus" [pid 5406] <... mmap resumed>) = 0x7f138d200000 [pid 5404] <... chdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5404] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5406] 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"..., 524288 [pid 5405] <... symlink resumed>) = 0 [pid 5404] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5403] close(3 [pid 5059] mkdir("./57", 0777 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5403] <... close resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5404] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] getdents64(3, [pid 5405] memfd_create("syzkaller", 0 [pid 5404] <... symlink resumed>) = 0 [pid 5403] close(4 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... mkdir resumed>) = 0 [pid 5404] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5403] <... close resumed>) = 0 [pid 5060] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5405] <... memfd_create resumed>) = 3 [pid 5403] mkdir("./bus", 0777 [pid 5059] <... openat resumed>) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5403] <... mkdir resumed>) = 0 [pid 5404] <... creat resumed>) = 4 [ 84.570498][ T5404] loop2: detected capacity change from 0 to 1024 [ 84.597799][ T5403] loop0: detected capacity change from 0 to 1024 [pid 5404] rename("./bus", "./file2" [pid 5406] <... write resumed>) = 524288 [pid 5405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5403] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5405] <... mmap resumed>) = 0x7f138d200000 [pid 5406] munmap(0x7f138d200000, 138412032 [pid 5405] 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"..., 524288 [pid 5404] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... umount2 resumed>) = 0 [pid 5406] <... munmap resumed>) = 0 [pid 5405] <... write resumed>) = 524288 [pid 5404] memfd_create("syzkaller", 0 [pid 5403] <... mount resumed>) = 0 [pid 5060] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./54/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5406] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5405] munmap(0x7f138d200000, 138412032 [pid 5404] <... memfd_create resumed>) = 5 [pid 5403] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] <... ioctl resumed>) = 0 [pid 5404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5406] <... openat resumed>) = 4 [pid 5060] umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5405] <... munmap resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./54/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5406] ioctl(4, LOOP_SET_FD, 3 [pid 5405] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5403] <... openat resumed>) = 3 [pid 5060] <... openat resumed>) = 4 [pid 5060] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4) = 0 [pid 5060] rmdir("./54/bus") = 0 [pid 5404] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] close(3 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./54/binderfs", [pid 5059] <... close resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./54/binderfs") = 0 [pid 5060] getdents64(3, [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5406] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5405] <... openat resumed>) = 4 [pid 5403] chdir("./bus" [pid 5060] <... close resumed>) = 0 [pid 5405] ioctl(4, LOOP_SET_FD, 3 [pid 5404] <... write resumed>) = 524288 [pid 5403] <... chdir resumed>) = 0 [pid 5060] rmdir("./54"./strace-static-x86_64: Process 5407 attached [pid 5407] set_robust_list(0x555556c07660, 24 [pid 5060] <... rmdir resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5407 [pid 5407] <... set_robust_list resumed>) = 0 [pid 5407] chdir("./57" [pid 5060] mkdir("./55", 0777 [pid 5407] <... chdir resumed>) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5407] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5407] setpgid(0, 0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5407] <... setpgid resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5404] munmap(0x7f138d200000, 138412032 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5403] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5407] <... openat resumed>) = 3 [pid 5404] <... munmap resumed>) = 0 [pid 5403] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5403] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5407] write(3, "1000", 4) = 4 [pid 5407] close(3) = 0 [pid 5407] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5404] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5403] <... symlink resumed>) = 0 [pid 5407] memfd_create("syzkaller", 0 [pid 5404] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5403] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5406] close(3 [pid 5407] <... memfd_create resumed>) = 3 [pid 5404] close(5 [pid 5407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5406] <... close resumed>) = 0 [pid 5405] <... ioctl resumed>) = 0 [pid 5403] <... creat resumed>) = 4 [pid 5407] <... mmap resumed>) = 0x7f138d200000 [pid 5406] close(4 [pid 5405] close(3 [pid 5403] rename("./bus", "./file2" [pid 5406] <... close resumed>) = 0 [pid 5405] <... close resumed>) = 0 [pid 5403] <... rename resumed>) = -1 EEXIST (File exists) [pid 5406] mkdir("./bus", 0777 [pid 5405] close(4 [pid 5403] memfd_create("syzkaller", 0 [pid 5405] <... close resumed>) = 0 [pid 5403] <... memfd_create resumed>) = 5 [pid 5406] <... mkdir resumed>) = 0 [pid 5406] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5405] mkdir("./bus", 0777 [pid 5403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5407] 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"..., 524288 [pid 5405] <... mkdir resumed>) = 0 [pid 5403] <... mmap resumed>) = 0x7f138d200000 [pid 5405] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5403] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5407] <... write resumed>) = 524288 [pid 5406] <... mount resumed>) = 0 [pid 5406] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5407] munmap(0x7f138d200000, 138412032 [pid 5406] chdir("./bus" [pid 5405] <... mount resumed>) = 0 [pid 5404] <... close resumed>) = 0 [pid 5403] <... write resumed>) = 524288 [pid 5407] <... munmap resumed>) = 0 [ 84.686971][ T5406] loop1: detected capacity change from 0 to 1024 [ 84.698669][ T5405] loop5: detected capacity change from 0 to 1024 [pid 5406] <... chdir resumed>) = 0 [pid 5405] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5403] munmap(0x7f138d200000, 138412032 [pid 5404] creat("./file1", 000 [pid 5407] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5405] <... openat resumed>) = 3 [pid 5407] <... openat resumed>) = 4 [pid 5406] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5403] <... munmap resumed>) = 0 [pid 5405] chdir("./bus" [pid 5407] ioctl(4, LOOP_SET_FD, 3 [pid 5406] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5405] <... chdir resumed>) = 0 [pid 5404] <... creat resumed>) = 5 [pid 5403] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5406] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5405] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5404] exit_group(0 [pid 5403] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5405] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5404] <... exit_group resumed>) = ? [pid 5403] close(5 [pid 5060] <... ioctl resumed>) = 0 [pid 5404] +++ exited with 0 +++ [pid 5060] close(3 [pid 5406] <... symlink resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5404, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5406] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5406] <... creat resumed>) = 4 [pid 5405] <... symlink resumed>) = 0 [pid 5403] <... close resumed>) = 0 [pid 5058] newfstatat(3, "", ./strace-static-x86_64: Process 5408 attached [pid 5406] rename("./bus", "./file2" [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5408 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5408] set_robust_list(0x555556c07660, 24 [pid 5058] getdents64(3, [pid 5408] <... set_robust_list resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5408] chdir("./55") = 0 [pid 5406] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5408] setpgid(0, 0) = 0 [pid 5408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5406] memfd_create("syzkaller", 0 [pid 5405] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5408] write(3, "1000", 4) = 4 [pid 5408] close(3) = 0 [pid 5408] symlink("/dev/binderfs", "./binderfs" [pid 5407] <... ioctl resumed>) = 0 [pid 5408] <... symlink resumed>) = 0 [pid 5407] close(3 [pid 5408] memfd_create("syzkaller", 0 [pid 5407] <... close resumed>) = 0 [pid 5408] <... memfd_create resumed>) = 3 [pid 5407] close(4 [pid 5408] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5407] <... close resumed>) = 0 [pid 5408] <... mmap resumed>) = 0x7f138d200000 [pid 5407] mkdir("./bus", 0777) = 0 [pid 5407] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5406] <... memfd_create resumed>) = 5 [pid 5406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5407] <... mount resumed>) = 0 [pid 5407] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5407] chdir("./bus" [pid 5408] 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"..., 524288 [pid 5407] <... chdir resumed>) = 0 [pid 5406] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5403] creat("./file1", 000 [pid 5407] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5407] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5405] <... creat resumed>) = 4 [pid 5407] <... symlink resumed>) = 0 [pid 5405] rename("./bus", "./file2" [pid 5408] <... write resumed>) = 524288 [pid 5058] <... umount2 resumed>) = 0 [pid 5407] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5405] <... rename resumed>) = -1 EEXIST (File exists) [pid 5405] memfd_create("syzkaller", 0 [pid 5058] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5405] <... memfd_create resumed>) = 5 [pid 5405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5405] <... mmap resumed>) = 0x7f138d200000 [pid 5403] <... creat resumed>) = 5 [pid 5058] newfstatat(AT_FDCWD, "./55/bus", [pid 5403] exit_group(0) = ? [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 84.760634][ T5407] loop3: detected capacity change from 0 to 1024 [pid 5407] <... creat resumed>) = 4 [pid 5407] rename("./bus", "./file2" [pid 5058] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5406] <... write resumed>) = 524288 [pid 5405] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5407] <... rename resumed>) = -1 EEXIST (File exists) [pid 5407] memfd_create("syzkaller", 0 [pid 5408] munmap(0x7f138d200000, 138412032 [pid 5407] <... memfd_create resumed>) = 5 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5408] <... munmap resumed>) = 0 [pid 5407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5403] +++ exited with 0 +++ [pid 5058] openat(AT_FDCWD, "./55/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5407] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... openat resumed>) = 4 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5403, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5408] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] newfstatat(4, "", [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5408] <... openat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5408] ioctl(4, LOOP_SET_FD, 3 [pid 5058] getdents64(4, [pid 5056] umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(4, [pid 5056] openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5058] close(4 [pid 5056] newfstatat(3, "", [pid 5058] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5407] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5056] getdents64(3, [pid 5406] munmap(0x7f138d200000, 138412032 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5406] <... munmap resumed>) = 0 [pid 5405] <... write resumed>) = 524288 [pid 5058] rmdir("./55/bus" [pid 5056] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5406] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] <... rmdir resumed>) = 0 [pid 5406] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = 0 [pid 5406] close(5 [pid 5405] munmap(0x7f138d200000, 138412032 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5405] <... munmap resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./55/binderfs", [pid 5408] <... ioctl resumed>) = 0 [pid 5056] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5408] close(3 [pid 5407] <... write resumed>) = 524288 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5408] <... close resumed>) = 0 [pid 5408] close(4 [pid 5407] munmap(0x7f138d200000, 138412032 [pid 5408] <... close resumed>) = 0 [pid 5407] <... munmap resumed>) = 0 [pid 5405] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] newfstatat(AT_FDCWD, "./55/bus", [pid 5405] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5408] mkdir("./bus", 0777 [pid 5405] close(5 [pid 5058] unlink("./55/binderfs" [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5407] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5408] <... mkdir resumed>) = 0 [pid 5407] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5408] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5407] close(5 [pid 5056] openat(AT_FDCWD, "./55/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5405] <... close resumed>) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5058] getdents64(3, [pid 5056] newfstatat(4, "", [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] close(3 [pid 5056] getdents64(4, [pid 5408] <... mount resumed>) = 0 [pid 5406] <... close resumed>) = 0 [pid 5408] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5058] <... close resumed>) = 0 [pid 5408] <... openat resumed>) = 3 [pid 5058] rmdir("./55" [pid 5408] chdir("./bus") = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5408] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] <... rmdir resumed>) = 0 [pid 5056] getdents64(4, [pid 5408] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5407] <... close resumed>) = 0 [pid 5406] creat("./file1", 000 [pid 5405] creat("./file1", 000 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5408] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5405] <... creat resumed>) = 5 [pid 5058] mkdir("./56", 0777 [pid 5056] close(4 [pid 5408] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5405] exit_group(0 [pid 5056] <... close resumed>) = 0 [pid 5407] creat("./file1", 000 [pid 5405] <... exit_group resumed>) = ? [pid 5058] <... mkdir resumed>) = 0 [pid 5056] rmdir("./55/bus") = 0 [pid 5408] <... creat resumed>) = 4 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5408] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5058] <... openat resumed>) = 3 [pid 5056] umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5408] memfd_create("syzkaller", 0 [pid 5406] <... creat resumed>) = 5 [pid 5408] <... memfd_create resumed>) = 5 [pid 5407] <... creat resumed>) = 5 [pid 5406] exit_group(0 [pid 5405] +++ exited with 0 +++ [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5408] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5407] exit_group(0 [pid 5056] newfstatat(AT_FDCWD, "./55/binderfs", [pid 5408] <... mmap resumed>) = 0x7f138d200000 [pid 5407] <... exit_group resumed>) = ? [pid 5406] <... exit_group resumed>) = ? [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5405, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5408] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5407] +++ exited with 0 +++ [pid 5406] +++ exited with 0 +++ [pid 5061] <... restart_syscall resumed>) = 0 [pid 5056] unlink("./55/binderfs" [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5407, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5061] umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5406, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5061] newfstatat(3, "", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] getdents64(3, [pid 5059] umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... openat resumed>) = 3 [pid 5056] <... unlink resumed>) = 0 [pid 5061] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] newfstatat(3, "", [pid 5059] <... openat resumed>) = 3 [pid 5056] getdents64(3, [pid 5059] newfstatat(3, "", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [ 84.830740][ T5408] loop4: detected capacity change from 0 to 1024 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, [pid 5056] close(3 [pid 5059] getdents64(3, [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./55" [pid 5059] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5056] mkdir("./56", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5408] <... write resumed>) = 524288 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5061] <... umount2 resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5059] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./57/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./57/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5408] munmap(0x7f138d200000, 138412032 [pid 5059] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5408] <... munmap resumed>) = 0 [pid 5061] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5408] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./57/bus", [pid 5057] newfstatat(AT_FDCWD, "./56/bus", [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5408] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] rmdir("./57/bus" [pid 5057] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./57/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] openat(AT_FDCWD, "./56/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... openat resumed>) = 4 [pid 5057] <... openat resumed>) = 4 [pid 5061] newfstatat(4, "", [pid 5057] newfstatat(4, "", [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5408] close(5 [pid 5059] <... rmdir resumed>) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./57/bus") = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, [pid 5408] <... close resumed>) = 0 [pid 5061] umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... ioctl resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] newfstatat(AT_FDCWD, "./57/binderfs", [pid 5057] close(4) = 0 [pid 5061] newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] rmdir("./56/bus" [pid 5408] creat("./file1", 000 [pid 5059] unlink("./57/binderfs" [pid 5057] <... rmdir resumed>) = 0 [pid 5061] unlink("./57/binderfs") = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5061] getdents64(3, [pid 5059] getdents64(3, [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3 [pid 5058] close(3 [pid 5061] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] rmdir("./57" [pid 5059] close(3 [pid 5057] newfstatat(AT_FDCWD, "./56/binderfs", [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 5409 attached [pid 5057] unlink("./56/binderfs" [pid 5409] set_robust_list(0x555556c07660, 24 [pid 5408] <... creat resumed>) = 5 [pid 5059] rmdir("./57" [pid 5057] <... unlink resumed>) = 0 [pid 5409] <... set_robust_list resumed>) = 0 [pid 5408] exit_group(0 [pid 5061] mkdir("./58", 0777 [pid 5059] <... rmdir resumed>) = 0 [pid 5057] getdents64(3, [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5409 [pid 5409] chdir("./56" [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] <... mkdir resumed>) = 0 [pid 5057] close(3) = 0 [pid 5409] <... chdir resumed>) = 0 [pid 5057] rmdir("./56" [pid 5409] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... rmdir resumed>) = 0 [pid 5409] <... prctl resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] mkdir("./57", 0777) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] mkdir("./58", 0777 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5409] setpgid(0, 0 [pid 5408] <... exit_group resumed>) = ? [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5059] <... mkdir resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5408] +++ exited with 0 +++ [pid 5409] <... setpgid resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5408, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] close(3 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5409] write(3, "1000", 4 [pid 5060] <... restart_syscall resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5409] <... write resumed>) = 4 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5409] close(3 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5409] <... close resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5409] symlink("/dev/binderfs", "./binderfs" [pid 5060] newfstatat(3, "", ./strace-static-x86_64: Process 5410 attached [pid 5409] <... symlink resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5410] set_robust_list(0x555556c07660, 24 [pid 5409] memfd_create("syzkaller", 0 [pid 5060] getdents64(3, [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5410 [pid 5410] <... set_robust_list resumed>) = 0 [pid 5409] <... memfd_create resumed>) = 3 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5410] chdir("./56" [pid 5409] 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"..., 524288 [pid 5060] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5410] <... chdir resumed>) = 0 [pid 5410] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5410] setpgid(0, 0) = 0 [pid 5410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5410] write(3, "1000", 4 [pid 5409] <... write resumed>) = 524288 [pid 5060] <... umount2 resumed>) = 0 [pid 5410] <... write resumed>) = 4 [pid 5410] close(3 [pid 5060] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5410] <... close resumed>) = 0 [pid 5410] symlink("/dev/binderfs", "./binderfs" [pid 5409] munmap(0x7f138d200000, 138412032 [pid 5410] <... symlink resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... ioctl resumed>) = 0 [pid 5410] memfd_create("syzkaller", 0 [pid 5409] <... munmap resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./55/bus", [pid 5061] <... ioctl resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5409] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5409] ioctl(4, LOOP_SET_FD, 3 [pid 5410] <... memfd_create resumed>) = 3 [pid 5061] close(3 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... ioctl resumed>) = 0 [pid 5057] close(3 [pid 5061] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] openat(AT_FDCWD, "./55/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5411 attached [pid 5410] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... openat resumed>) = 4 [pid 5059] close(3 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5411 [pid 5411] set_robust_list(0x555556c07660, 24) = 0 [pid 5411] chdir("./57"./strace-static-x86_64: Process 5412 attached ) = 0 [pid 5412] set_robust_list(0x555556c07660, 24 [pid 5411] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5412] <... set_robust_list resumed>) = 0 [pid 5411] <... prctl resumed>) = 0 [pid 5412] chdir("./58" [pid 5411] setpgid(0, 0) = 0 [pid 5411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5411] write(3, "1000", 4) = 4 [pid 5411] close(3 [pid 5412] <... chdir resumed>) = 0 [pid 5411] <... close resumed>) = 0 [pid 5412] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5411] symlink("/dev/binderfs", "./binderfs" [pid 5412] <... prctl resumed>) = 0 [pid 5411] <... symlink resumed>) = 0 [pid 5412] setpgid(0, 0 [pid 5411] memfd_create("syzkaller", 0 [pid 5412] <... setpgid resumed>) = 0 [pid 5412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5411] <... memfd_create resumed>) = 3 [pid 5412] <... openat resumed>) = 3 [pid 5060] newfstatat(4, "", [pid 5059] <... close resumed>) = 0 [pid 5412] write(3, "1000", 4 [pid 5411] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5412] <... write resumed>) = 4 [pid 5411] <... mmap resumed>) = 0x7f138d200000 [pid 5412] close(3 [pid 5409] <... ioctl resumed>) = 0 [pid 5412] <... close resumed>) = 0 [pid 5412] symlink("/dev/binderfs", "./binderfs" [pid 5410] 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"..., 524288 [pid 5409] close(3 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5412 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5411] 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"..., 524288) = 524288 ./strace-static-x86_64: Process 5413 attached [pid 5412] <... symlink resumed>) = 0 [pid 5409] <... close resumed>) = 0 [pid 5060] getdents64(4, [pid 5411] munmap(0x7f138d200000, 138412032 [pid 5409] close(4 [pid 5412] memfd_create("syzkaller", 0 [pid 5411] <... munmap resumed>) = 0 [pid 5409] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5413 [pid 5412] <... memfd_create resumed>) = 3 [pid 5409] mkdir("./bus", 0777 [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5412] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5411] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5409] <... mkdir resumed>) = 0 [pid 5060] close(4 [pid 5412] <... mmap resumed>) = 0x7f138d200000 [pid 5411] <... openat resumed>) = 4 [pid 5409] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] <... close resumed>) = 0 [pid 5412] 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"..., 524288 [pid 5411] ioctl(4, LOOP_SET_FD, 3 [pid 5410] <... write resumed>) = 524288 [ 84.994014][ T5409] loop2: detected capacity change from 0 to 1024 [pid 5060] rmdir("./55/bus" [pid 5411] <... ioctl resumed>) = 0 [pid 5410] munmap(0x7f138d200000, 138412032 [pid 5060] <... rmdir resumed>) = 0 [pid 5413] set_robust_list(0x555556c07660, 24 [pid 5412] <... write resumed>) = 524288 [pid 5411] close(3 [pid 5409] <... mount resumed>) = 0 [pid 5413] <... set_robust_list resumed>) = 0 [pid 5412] munmap(0x7f138d200000, 138412032 [pid 5411] <... close resumed>) = 0 [pid 5409] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5413] chdir("./58" [pid 5412] <... munmap resumed>) = 0 [pid 5411] close(4 [pid 5410] <... munmap resumed>) = 0 [pid 5409] <... openat resumed>) = 3 [pid 5413] <... chdir resumed>) = 0 [pid 5412] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5411] <... close resumed>) = 0 [pid 5409] chdir("./bus" [pid 5060] umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5413] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5412] <... openat resumed>) = 4 [pid 5411] mkdir("./bus", 0777 [pid 5413] <... prctl resumed>) = 0 [pid 5412] ioctl(4, LOOP_SET_FD, 3 [pid 5411] <... mkdir resumed>) = 0 [pid 5410] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5409] <... chdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5413] setpgid(0, 0 [pid 5409] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5413] <... setpgid resumed>) = 0 [pid 5410] <... openat resumed>) = 4 [pid 5409] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] newfstatat(AT_FDCWD, "./55/binderfs", [pid 5413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5410] ioctl(4, LOOP_SET_FD, 3 [pid 5409] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5413] <... openat resumed>) = 3 [pid 5409] <... symlink resumed>) = 0 [pid 5413] write(3, "1000", 4 [pid 5409] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5413] <... write resumed>) = 4 [pid 5409] <... creat resumed>) = 4 [pid 5413] close(3 [pid 5409] rename("./bus", "./file2" [pid 5413] <... close resumed>) = 0 [pid 5413] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5413] memfd_create("syzkaller", 0) = 3 [pid 5413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5410] <... ioctl resumed>) = 0 [pid 5060] unlink("./55/binderfs" [pid 5413] 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"..., 524288 [pid 5411] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5410] close(3 [pid 5409] <... rename resumed>) = -1 EEXIST (File exists) [pid 5060] <... unlink resumed>) = 0 [pid 5410] <... close resumed>) = 0 [pid 5409] memfd_create("syzkaller", 0 [pid 5060] getdents64(3, [pid 5410] close(4 [pid 5409] <... memfd_create resumed>) = 5 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5410] <... close resumed>) = 0 [pid 5409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] close(3 [pid 5410] mkdir("./bus", 0777 [pid 5409] <... mmap resumed>) = 0x7f138d200000 [pid 5410] <... mkdir resumed>) = 0 [pid 5409] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... close resumed>) = 0 [pid 5060] rmdir("./55" [pid 5412] <... ioctl resumed>) = 0 [pid 5410] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] <... rmdir resumed>) = 0 [pid 5412] close(3) = 0 [pid 5412] close(4) = 0 [pid 5412] mkdir("./bus", 0777) = 0 [pid 5060] mkdir("./56", 0777 [pid 5413] <... write resumed>) = 524288 [pid 5060] <... mkdir resumed>) = 0 [pid 5412] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5411] <... mount resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5409] <... write resumed>) = 524288 [pid 5413] munmap(0x7f138d200000, 138412032 [pid 5411] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5413] <... munmap resumed>) = 0 [pid 5411] <... openat resumed>) = 3 [pid 5410] <... mount resumed>) = 0 [pid 5411] chdir("./bus") = 0 [pid 5411] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5410] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5411] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5410] <... openat resumed>) = 3 [pid 5413] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5411] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5413] <... openat resumed>) = 4 [pid 5411] <... symlink resumed>) = 0 [pid 5411] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [ 85.048893][ T5411] loop1: detected capacity change from 0 to 1024 [ 85.070239][ T5412] loop5: detected capacity change from 0 to 1024 [ 85.078772][ T5410] loop0: detected capacity change from 0 to 1024 [pid 5413] ioctl(4, LOOP_SET_FD, 3 [pid 5410] chdir("./bus" [pid 5409] munmap(0x7f138d200000, 138412032) = 0 [pid 5409] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5409] close(5) = 0 [pid 5413] <... ioctl resumed>) = 0 [pid 5412] <... mount resumed>) = 0 [pid 5411] <... creat resumed>) = 4 [pid 5410] <... chdir resumed>) = 0 [pid 5410] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5411] rename("./bus", "./file2" [pid 5410] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5413] close(3 [pid 5412] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5410] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5409] creat("./file1", 000 [pid 5413] <... close resumed>) = 0 [pid 5412] <... openat resumed>) = 3 [pid 5413] close(4 [pid 5412] chdir("./bus" [pid 5413] <... close resumed>) = 0 [pid 5412] <... chdir resumed>) = 0 [pid 5413] mkdir("./bus", 0777 [pid 5412] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5413] <... mkdir resumed>) = 0 [pid 5412] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5413] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5412] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5410] <... symlink resumed>) = 0 [pid 5412] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5411] <... rename resumed>) = -1 EEXIST (File exists) [pid 5409] <... creat resumed>) = 5 [pid 5411] memfd_create("syzkaller", 0 [pid 5410] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5409] exit_group(0 [pid 5060] <... ioctl resumed>) = 0 [pid 5411] <... memfd_create resumed>) = 5 [pid 5409] <... exit_group resumed>) = ? [pid 5412] <... creat resumed>) = 4 [pid 5411] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5409] +++ exited with 0 +++ [pid 5060] close(3 [pid 5412] rename("./bus", "./file2" [pid 5411] <... mmap resumed>) = 0x7f138d200000 [pid 5410] <... creat resumed>) = 4 [pid 5060] <... close resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5409, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5411] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, ./strace-static-x86_64: Process 5414 attached 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5414] set_robust_list(0x555556c07660, 24 [pid 5058] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5414] <... set_robust_list resumed>) = 0 [pid 5410] rename("./bus", "./file2" [pid 5414] chdir("./56") = 0 [pid 5414] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5413] <... mount resumed>) = 0 [pid 5412] <... rename resumed>) = -1 EEXIST (File exists) [pid 5411] <... write resumed>) = 524288 [pid 5410] <... rename resumed>) = -1 EEXIST (File exists) [pid 5414] <... prctl resumed>) = 0 [pid 5412] memfd_create("syzkaller", 0 [pid 5414] setpgid(0, 0) = 0 [pid 5413] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5412] <... memfd_create resumed>) = 5 [pid 5410] memfd_create("syzkaller", 0 [pid 5413] <... openat resumed>) = 3 [pid 5410] <... memfd_create resumed>) = 5 [pid 5414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 85.117815][ T5413] loop3: detected capacity change from 0 to 1024 [pid 5413] chdir("./bus" [pid 5412] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5414 [pid 5413] <... chdir resumed>) = 0 [pid 5410] <... mmap resumed>) = 0x7f138d200000 [pid 5413] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5412] <... mmap resumed>) = 0x7f138d200000 [pid 5413] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5413] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5058] <... umount2 resumed>) = 0 [pid 5414] <... openat resumed>) = 3 [pid 5414] write(3, "1000", 4 [pid 5413] <... symlink resumed>) = 0 [pid 5414] <... write resumed>) = 4 [pid 5058] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5413] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5411] munmap(0x7f138d200000, 138412032 [pid 5414] close(3 [pid 5412] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5411] <... munmap resumed>) = 0 [pid 5410] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5414] <... close resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./56/bus", [pid 5414] symlink("/dev/binderfs", "./binderfs" [pid 5411] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5414] <... symlink resumed>) = 0 [pid 5411] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5411] close(5 [pid 5413] <... creat resumed>) = 4 [pid 5058] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5413] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5411] <... close resumed>) = 0 [pid 5410] <... write resumed>) = 524288 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5413] memfd_create("syzkaller", 0 [pid 5414] memfd_create("syzkaller", 0 [pid 5413] <... memfd_create resumed>) = 5 [pid 5058] openat(AT_FDCWD, "./56/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5411] creat("./file1", 000 [pid 5058] <... openat resumed>) = 4 [pid 5413] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5414] <... memfd_create resumed>) = 3 [pid 5411] <... creat resumed>) = 5 [pid 5058] getdents64(4, [pid 5414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5412] <... write resumed>) = 524288 [pid 5411] exit_group(0) = ? [pid 5414] <... mmap resumed>) = 0x7f138d200000 [pid 5412] munmap(0x7f138d200000, 138412032 [pid 5411] +++ exited with 0 +++ [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5414] 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"..., 524288 [pid 5413] <... write resumed>) = 524288 [pid 5412] <... munmap resumed>) = 0 [pid 5410] munmap(0x7f138d200000, 138412032 [pid 5058] getdents64(4, [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5411, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5413] munmap(0x7f138d200000, 138412032 [pid 5414] <... write resumed>) = 524288 [pid 5412] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5410] <... munmap resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5412] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5410] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] close(4) = 0 [pid 5414] munmap(0x7f138d200000, 138412032 [pid 5412] close(5 [pid 5410] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] rmdir("./56/bus" [pid 5057] umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5410] close(5 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5413] <... munmap resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5413] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5413] close(5 [pid 5414] <... munmap resumed>) = 0 [pid 5412] <... close resumed>) = 0 [pid 5410] <... close resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5414] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5413] <... close resumed>) = 0 [pid 5412] creat("./file1", 000 [pid 5410] creat("./file1", 000 [pid 5058] umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5414] <... openat resumed>) = 4 [pid 5057] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5414] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./57/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./57/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./57/bus" [pid 5413] creat("./file1", 000 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./57/binderfs") = 0 [pid 5057] getdents64(3, [pid 5414] <... ioctl resumed>) = 0 [pid 5413] <... creat resumed>) = 5 [pid 5058] newfstatat(AT_FDCWD, "./56/binderfs", [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5412] <... creat resumed>) = 5 [pid 5410] <... creat resumed>) = 5 [pid 5412] exit_group(0 [pid 5410] exit_group(0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./56/binderfs") = 0 [pid 5412] <... exit_group resumed>) = ? [pid 5058] getdents64(3, [pid 5413] exit_group(0 [pid 5412] +++ exited with 0 +++ [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3 [pid 5413] <... exit_group resumed>) = ? [pid 5410] <... exit_group resumed>) = ? [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5412, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5058] close(3 [pid 5057] <... close resumed>) = 0 [pid 5414] close(3 [pid 5413] +++ exited with 0 +++ [pid 5410] +++ exited with 0 +++ [pid 5058] <... close resumed>) = 0 [pid 5057] rmdir("./57" [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5413, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5414] <... close resumed>) = 0 [pid 5058] rmdir("./56" [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5410, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5414] close(4 [pid 5061] umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... rmdir resumed>) = 0 [pid 5414] <... close resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] mkdir("./57", 0777 [pid 5414] mkdir("./bus", 0777 [pid 5061] openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5414] <... mkdir resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5059] <... restart_syscall resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] mkdir("./58", 0777 [pid 5058] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5056] umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] newfstatat(3, "", [pid 5059] openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, [pid 5061] newfstatat(3, "", [pid 5059] <... openat resumed>) = 3 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(3, "", [pid 5057] <... openat resumed>) = 3 [pid 5056] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5414] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5061] getdents64(3, [pid 5059] getdents64(3, [pid 5414] <... mount resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5414] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5414] <... openat resumed>) = 3 [pid 5059] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5414] chdir("./bus") = 0 [pid 5414] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5414] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5414] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... umount2 resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [ 85.252448][ T5414] loop4: detected capacity change from 0 to 1024 [pid 5061] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./58/bus", [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] newfstatat(AT_FDCWD, "./58/bus", [pid 5061] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] openat(AT_FDCWD, "./58/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... openat resumed>) = 4 [pid 5059] openat(AT_FDCWD, "./58/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] newfstatat(4, "", [pid 5059] <... openat resumed>) = 4 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(4, "", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(AT_FDCWD, "./56/bus", [pid 5414] <... creat resumed>) = 4 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5414] rename("./bus", "./file2" [pid 5061] getdents64(4, [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] <... close resumed>) = 0 [pid 5414] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] rmdir("./58/bus" [pid 5059] getdents64(4, [pid 5056] openat(AT_FDCWD, "./56/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5414] memfd_create("syzkaller", 0 [pid 5061] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5414] <... memfd_create resumed>) = 5 [pid 5059] close(4 [pid 5414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... close resumed>) = 0 [pid 5414] <... mmap resumed>) = 0x7f138d200000 [pid 5059] rmdir("./58/bus" [pid 5056] newfstatat(4, "", [pid 5414] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5414] <... write resumed>) = 524288 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5059] umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(4 [pid 5059] newfstatat(AT_FDCWD, "./58/binderfs", [pid 5056] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] rmdir("./56/bus" [pid 5061] newfstatat(AT_FDCWD, "./58/binderfs", [pid 5059] unlink("./58/binderfs" [pid 5056] <... rmdir resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5061] unlink("./58/binderfs" [pid 5059] getdents64(3, [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... unlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(3 [pid 5056] newfstatat(AT_FDCWD, "./56/binderfs", [pid 5059] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5414] munmap(0x7f138d200000, 138412032 [pid 5059] rmdir("./58" [pid 5056] unlink("./56/binderfs" [pid 5414] <... munmap resumed>) = 0 [pid 5061] getdents64(3, [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5056] getdents64(3, [pid 5059] mkdir("./59", 0777 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5057] close(3 [pid 5414] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5061] close(3 [pid 5058] close(3 [pid 5414] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5061] rmdir("./58" [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... rmdir resumed>) = 0 [pid 5056] rmdir("./56"./strace-static-x86_64: Process 5415 attached [pid 5414] close(5 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] <... rmdir resumed>) = 0 [pid 5415] set_robust_list(0x555556c07660, 24 [pid 5414] <... close resumed>) = 0 [pid 5061] mkdir("./59", 0777 [pid 5059] <... openat resumed>) = 3 [pid 5057] <... close resumed>) = 0 [pid 5056] mkdir("./57", 0777 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5415 [pid 5415] <... set_robust_list resumed>) = 0 [pid 5415] chdir("./57" [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5415] <... chdir resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... mkdir resumed>) = 0 [pid 5415] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... mkdir resumed>) = 0 [pid 5415] <... prctl resumed>) = 0 [pid 5415] setpgid(0, 0) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 5416 attached [pid 5415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... openat resumed>) = 3 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5416] set_robust_list(0x555556c07660, 24) = 0 [pid 5415] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5416 [pid 5056] <... openat resumed>) = 3 [pid 5414] creat("./file1", 000 [pid 5416] chdir("./58") = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5416] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5415] write(3, "1000", 4) = 4 [pid 5415] close(3 [pid 5416] <... prctl resumed>) = 0 [pid 5416] setpgid(0, 0 [pid 5415] <... close resumed>) = 0 [pid 5415] symlink("/dev/binderfs", "./binderfs" [pid 5416] <... setpgid resumed>) = 0 [pid 5415] <... symlink resumed>) = 0 [pid 5416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5415] memfd_create("syzkaller", 0 [pid 5416] <... openat resumed>) = 3 [pid 5416] write(3, "1000", 4) = 4 [pid 5415] <... memfd_create resumed>) = 3 [pid 5416] close(3 [pid 5415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5414] <... creat resumed>) = 5 [pid 5416] <... close resumed>) = 0 [pid 5415] 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"..., 524288 [pid 5414] exit_group(0) = ? [pid 5416] symlink("/dev/binderfs", "./binderfs" [pid 5414] +++ exited with 0 +++ [pid 5416] <... symlink resumed>) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5414, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5060] umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5416] memfd_create("syzkaller", 0 [pid 5060] openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5415] <... write resumed>) = 524288 [pid 5416] <... memfd_create resumed>) = 3 [pid 5060] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5415] munmap(0x7f138d200000, 138412032 [pid 5416] <... mmap resumed>) = 0x7f138d200000 [pid 5415] <... munmap resumed>) = 0 [pid 5416] 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"..., 524288 [pid 5415] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5415] ioctl(4, LOOP_SET_FD, 3 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5059] close(3) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5417 attached [pid 5417] set_robust_list(0x555556c07660, 24 [pid 5060] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5417 [pid 5417] <... set_robust_list resumed>) = 0 [pid 5061] close(3 [pid 5417] chdir("./59" [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5417] <... chdir resumed>) = 0 [pid 5417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5417] setpgid(0, 0) = 0 [pid 5060] newfstatat(AT_FDCWD, "./56/bus", [pid 5416] <... write resumed>) = 524288 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] close(3 [pid 5060] umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./56/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] <... openat resumed>) = 4 [pid 5060] newfstatat(4, "", [pid 5416] munmap(0x7f138d200000, 138412032 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5418 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5419 [pid 5060] getdents64(4, ./strace-static-x86_64: Process 5418 attached [pid 5416] <... munmap resumed>) = 0 [pid 5415] <... ioctl resumed>) = 0 [pid 5418] set_robust_list(0x555556c07660, 24 [pid 5416] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5418] <... set_robust_list resumed>) = 0 [pid 5416] <... openat resumed>) = 4 [pid 5415] close(3 [pid 5418] chdir("./59" [pid 5416] ioctl(4, LOOP_SET_FD, 3 [pid 5415] <... close resumed>) = 0 ./strace-static-x86_64: Process 5419 attached [pid 5418] <... chdir resumed>) = 0 [pid 5417] <... openat resumed>) = 3 [pid 5415] close(4 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5419] set_robust_list(0x555556c07660, 24 [pid 5417] write(3, "1000", 4 [pid 5419] <... set_robust_list resumed>) = 0 [pid 5060] getdents64(4, [pid 5419] chdir("./57" [pid 5418] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5417] <... write resumed>) = 4 [pid 5415] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5418] <... prctl resumed>) = 0 [pid 5415] mkdir("./bus", 0777 [pid 5060] close(4 [pid 5419] <... chdir resumed>) = 0 [pid 5417] close(3 [pid 5419] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5418] setpgid(0, 0 [pid 5417] <... close resumed>) = 0 [pid 5415] <... mkdir resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5419] <... prctl resumed>) = 0 [pid 5417] symlink("/dev/binderfs", "./binderfs" [pid 5060] rmdir("./56/bus" [pid 5419] setpgid(0, 0) = 0 [pid 5418] <... setpgid resumed>) = 0 [pid 5417] <... symlink resumed>) = 0 [pid 5415] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5060] <... rmdir resumed>) = 0 [pid 5418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5418] <... openat resumed>) = 3 [pid 5417] memfd_create("syzkaller", 0 [pid 5418] write(3, "1000", 4) = 4 [pid 5418] close(3) = 0 [pid 5419] <... openat resumed>) = 3 [pid 5418] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5417] <... memfd_create resumed>) = 3 [pid 5419] write(3, "1000", 4 [pid 5417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5418] memfd_create("syzkaller", 0 [pid 5415] <... mount resumed>) = 0 [pid 5419] <... write resumed>) = 4 [pid 5419] close(3 [pid 5418] <... memfd_create resumed>) = 3 [pid 5419] <... close resumed>) = 0 [pid 5418] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5419] symlink("/dev/binderfs", "./binderfs" [pid 5418] <... mmap resumed>) = 0x7f138d200000 [pid 5417] <... mmap resumed>) = 0x7f138d200000 [pid 5060] newfstatat(AT_FDCWD, "./56/binderfs", [pid 5419] <... symlink resumed>) = 0 [pid 5418] 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"..., 524288 [pid 5415] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5419] memfd_create("syzkaller", 0) = 3 [pid 5415] <... openat resumed>) = 3 [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5417] 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"..., 524288 [pid 5416] <... ioctl resumed>) = 0 [pid 5415] chdir("./bus" [pid 5060] unlink("./56/binderfs" [pid 5419] <... mmap resumed>) = 0x7f138d200000 [pid 5419] 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"..., 524288 [pid 5060] <... unlink resumed>) = 0 [pid 5415] <... chdir resumed>) = 0 [pid 5416] close(3 [ 85.403842][ T5415] loop2: detected capacity change from 0 to 1024 [ 85.434149][ T5416] loop1: detected capacity change from 0 to 1024 [pid 5415] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5060] getdents64(3, [pid 5416] <... close resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5416] close(4) = 0 [pid 5416] mkdir("./bus", 0777) = 0 [pid 5415] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5416] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5415] <... symlink resumed>) = 0 [pid 5417] <... write resumed>) = 524288 [pid 5415] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] close(3) = 0 [pid 5060] rmdir("./56") = 0 [pid 5418] <... write resumed>) = 524288 [pid 5415] <... creat resumed>) = 4 [pid 5415] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5415] memfd_create("syzkaller", 0 [pid 5418] munmap(0x7f138d200000, 138412032 [pid 5416] <... mount resumed>) = 0 [pid 5415] <... memfd_create resumed>) = 5 [pid 5418] <... munmap resumed>) = 0 [pid 5416] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5418] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5416] <... openat resumed>) = 3 [pid 5415] <... mmap resumed>) = 0x7f138d200000 [pid 5419] <... write resumed>) = 524288 [pid 5418] <... openat resumed>) = 4 [pid 5416] chdir("./bus" [pid 5415] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] mkdir("./57", 0777 [pid 5418] ioctl(4, LOOP_SET_FD, 3 [pid 5419] munmap(0x7f138d200000, 138412032 [pid 5417] munmap(0x7f138d200000, 138412032 [pid 5416] <... chdir resumed>) = 0 [pid 5060] <... mkdir resumed>) = 0 [pid 5416] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5419] <... munmap resumed>) = 0 [pid 5417] <... munmap resumed>) = 0 [pid 5416] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5415] <... write resumed>) = 524288 [pid 5060] <... openat resumed>) = 3 [pid 5419] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5417] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5416] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5419] <... openat resumed>) = 4 [pid 5417] <... openat resumed>) = 4 [pid 5416] <... symlink resumed>) = 0 [pid 5416] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5417] ioctl(4, LOOP_SET_FD, 3 [pid 5416] <... creat resumed>) = 4 [pid 5416] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5416] memfd_create("syzkaller", 0) = 5 [pid 5416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5415] munmap(0x7f138d200000, 138412032 [pid 5416] <... mmap resumed>) = 0x7f138d200000 [pid 5415] <... munmap resumed>) = 0 [pid 5416] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5415] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5419] ioctl(4, LOOP_SET_FD, 3 [pid 5418] <... ioctl resumed>) = 0 [pid 5415] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5418] close(3 [pid 5415] close(5 [pid 5418] <... close resumed>) = 0 [pid 5418] close(4) = 0 [pid 5418] mkdir("./bus", 0777) = 0 [pid 5418] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "") = 0 [pid 5418] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5418] chdir("./bus" [pid 5419] <... ioctl resumed>) = 0 [pid 5418] <... chdir resumed>) = 0 [pid 5417] <... ioctl resumed>) = 0 [pid 5416] <... write resumed>) = 524288 [pid 5419] close(3 [pid 5418] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5417] close(3 [pid 5416] munmap(0x7f138d200000, 138412032 [pid 5418] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5418] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5419] <... close resumed>) = 0 [pid 5417] <... close resumed>) = 0 [pid 5416] <... munmap resumed>) = 0 [pid 5418] <... symlink resumed>) = 0 [pid 5419] close(4 [pid 5417] close(4) = 0 [pid 5419] <... close resumed>) = 0 [pid 5417] mkdir("./bus", 0777 [pid 5419] mkdir("./bus", 0777 [pid 5416] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5418] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5415] <... close resumed>) = 0 [pid 5419] <... mkdir resumed>) = 0 [pid 5419] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5416] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5415] creat("./file1", 000 [pid 5417] <... mkdir resumed>) = 0 [pid 5416] close(5 [pid 5060] <... ioctl resumed>) = 0 [pid 5415] <... creat resumed>) = 5 [pid 5415] exit_group(0) = ? [pid 5416] <... close resumed>) = 0 [pid 5415] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5415, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [ 85.500393][ T5418] loop5: detected capacity change from 0 to 1024 [ 85.515153][ T5417] loop3: detected capacity change from 0 to 1024 [ 85.524543][ T5419] loop0: detected capacity change from 0 to 1024 [pid 5418] <... creat resumed>) = 4 [pid 5417] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5418] rename("./bus", "./file2") = -1 EEXIST (File exists) [pid 5418] memfd_create("syzkaller", 0) = 5 [pid 5418] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5058] umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5060] close(3 [pid 5418] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./57/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... close resumed>) = 0 [pid 5058] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5419] <... mount resumed>) = 0 [pid 5418] <... write resumed>) = 524288 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./57/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./57/bus" [pid 5416] creat("./file1", 000 [pid 5058] <... rmdir resumed>) = 0 [pid 5058] umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5419] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5058] unlink("./57/binderfs" [pid 5418] munmap(0x7f138d200000, 138412032 [pid 5058] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 5420 attached [pid 5419] <... openat resumed>) = 3 [pid 5418] <... munmap resumed>) = 0 [pid 5058] getdents64(3, [pid 5419] chdir("./bus" [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5420] set_robust_list(0x555556c07660, 24 [pid 5419] <... chdir resumed>) = 0 [pid 5417] <... mount resumed>) = 0 [pid 5058] close(3 [pid 5420] <... set_robust_list resumed>) = 0 [pid 5419] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5418] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5417] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5420 [pid 5058] <... close resumed>) = 0 [pid 5420] chdir("./57" [pid 5419] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5418] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] rmdir("./57" [pid 5420] <... chdir resumed>) = 0 [pid 5418] close(5 [pid 5058] <... rmdir resumed>) = 0 [pid 5420] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5418] <... close resumed>) = 0 [pid 5419] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5420] <... prctl resumed>) = 0 [pid 5058] mkdir("./58", 0777 [pid 5420] setpgid(0, 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5417] <... openat resumed>) = 3 [pid 5417] chdir("./bus") = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5416] <... creat resumed>) = 5 [pid 5420] <... setpgid resumed>) = 0 [pid 5416] exit_group(0 [pid 5058] <... openat resumed>) = 3 [pid 5416] <... exit_group resumed>) = ? [pid 5420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5420] <... openat resumed>) = 3 [pid 5420] write(3, "1000", 4) = 4 [pid 5420] close(3) = 0 [pid 5420] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5418] creat("./file1", 000 [pid 5420] memfd_create("syzkaller", 0 [pid 5417] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5420] <... memfd_create resumed>) = 3 [pid 5419] <... symlink resumed>) = 0 [pid 5417] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5417] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5420] <... mmap resumed>) = 0x7f138d200000 [pid 5418] <... creat resumed>) = 5 [pid 5418] exit_group(0) = ? [pid 5420] 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"..., 524288 [pid 5419] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5418] +++ exited with 0 +++ [pid 5417] <... symlink resumed>) = 0 [pid 5416] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5416, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5418, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5061] umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(3, "", [pid 5057] openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5061] getdents64(3, [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5417] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5419] <... creat resumed>) = 4 [pid 5419] rename("./bus", "./file2" [pid 5417] <... creat resumed>) = 4 [pid 5419] <... rename resumed>) = -1 EEXIST (File exists) [pid 5417] rename("./bus", "./file2" [pid 5057] <... umount2 resumed>) = 0 [pid 5419] memfd_create("syzkaller", 0 [pid 5061] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./59/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./59/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5419] <... memfd_create resumed>) = 5 [pid 5417] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] <... openat resumed>) = 4 [pid 5420] <... write resumed>) = 524288 [pid 5419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5417] memfd_create("syzkaller", 0 [pid 5061] newfstatat(4, "", [pid 5057] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5419] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./58/bus", [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] getdents64(4, [pid 5057] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] getdents64(4, [pid 5057] openat(AT_FDCWD, "./58/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5417] <... memfd_create resumed>) = 5 [pid 5420] munmap(0x7f138d200000, 138412032 [pid 5419] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5058] close(3 [pid 5420] <... munmap resumed>) = 0 [pid 5417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] close(4 [pid 5058] <... close resumed>) = 0 [pid 5057] newfstatat(4, "", [pid 5420] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5417] <... mmap resumed>) = 0x7f138d200000 [pid 5061] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5420] <... openat resumed>) = 4 [pid 5417] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] rmdir("./59/bus" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 5421 attached [pid 5420] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... rmdir resumed>) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, [pid 5421] set_robust_list(0x555556c07660, 24 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5421 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5421] <... set_robust_list resumed>) = 0 [pid 5061] umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(4 [pid 5421] chdir("./58" [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... close resumed>) = 0 [pid 5421] <... chdir resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./59/binderfs", [pid 5421] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] rmdir("./58/bus" [pid 5421] <... prctl resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5421] setpgid(0, 0 [pid 5061] unlink("./59/binderfs" [pid 5421] <... setpgid resumed>) = 0 [pid 5057] umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5417] <... write resumed>) = 524288 [pid 5421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5420] <... ioctl resumed>) = 0 [pid 5419] <... write resumed>) = 524288 [pid 5061] <... unlink resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./58/binderfs", [pid 5421] <... openat resumed>) = 3 [pid 5420] close(3 [pid 5419] munmap(0x7f138d200000, 138412032 [pid 5417] munmap(0x7f138d200000, 138412032 [pid 5061] getdents64(3, [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5421] write(3, "1000", 4 [pid 5420] <... close resumed>) = 0 [pid 5419] <... munmap resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] unlink("./58/binderfs" [pid 5421] <... write resumed>) = 4 [pid 5420] close(4 [pid 5417] <... munmap resumed>) = 0 [pid 5061] close(3 [pid 5057] <... unlink resumed>) = 0 [pid 5421] close(3 [pid 5417] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5421] <... close resumed>) = 0 [pid 5420] <... close resumed>) = 0 [pid 5061] rmdir("./59" [pid 5417] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5421] symlink("/dev/binderfs", "./binderfs" [pid 5419] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... rmdir resumed>) = 0 [pid 5417] close(5 [pid 5057] close(3 [pid 5421] <... symlink resumed>) = 0 [pid 5420] mkdir("./bus", 0777 [pid 5419] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5417] <... close resumed>) = 0 [pid 5061] mkdir("./60", 0777 [pid 5057] <... close resumed>) = 0 [pid 5421] memfd_create("syzkaller", 0 [pid 5057] rmdir("./58" [pid 5417] creat("./file1", 000 [pid 5421] <... memfd_create resumed>) = 3 [pid 5420] <... mkdir resumed>) = 0 [pid 5419] close(5 [pid 5061] <... mkdir resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5420] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5419] <... close resumed>) = 0 [pid 5057] mkdir("./59", 0777 [pid 5421] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... mkdir resumed>) = 0 [pid 5417] <... creat resumed>) = 5 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5421] 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"..., 524288 [pid 5420] <... mount resumed>) = 0 [pid 5417] exit_group(0 [pid 5061] <... openat resumed>) = 3 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5420] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5420] <... openat resumed>) = 3 [pid 5420] chdir("./bus") = 0 [pid 5420] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5419] creat("./file1", 000 [pid 5420] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5417] <... exit_group resumed>) = ? [pid 5420] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5420] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5417] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5417, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5419] <... creat resumed>) = 5 [pid 5419] exit_group(0) = ? [ 85.688320][ T5420] loop4: detected capacity change from 0 to 1024 [pid 5059] umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5420] <... creat resumed>) = 4 [pid 5059] <... openat resumed>) = 3 [pid 5420] rename("./bus", "./file2" [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5420] <... rename resumed>) = -1 EEXIST (File exists) [pid 5419] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5419, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5056] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5056] umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5420] memfd_create("syzkaller", 0 [pid 5056] <... openat resumed>) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5420] <... memfd_create resumed>) = 5 [pid 5420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5420] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5421] <... write resumed>) = 524288 [pid 5059] <... umount2 resumed>) = 0 [pid 5421] munmap(0x7f138d200000, 138412032) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5421] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5420] <... write resumed>) = 524288 [pid 5059] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5421] <... openat resumed>) = 4 [pid 5420] munmap(0x7f138d200000, 138412032 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... ioctl resumed>) = 0 [pid 5061] close(3) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5422 attached [pid 5421] ioctl(4, LOOP_SET_FD, 3 [pid 5059] newfstatat(AT_FDCWD, "./59/bus", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5422] set_robust_list(0x555556c07660, 24 [pid 5420] <... munmap resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] newfstatat(AT_FDCWD, "./57/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./57/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5422 [pid 5056] newfstatat(4, "", [pid 5420] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5420] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5422] <... set_robust_list resumed>) = 0 [pid 5420] close(5 [pid 5059] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... ioctl resumed>) = 0 [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5422] chdir("./60" [pid 5421] <... ioctl resumed>) = 0 [pid 5420] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(3 [pid 5056] getdents64(4, [pid 5422] <... chdir resumed>) = 0 [pid 5421] close(3 [pid 5059] openat(AT_FDCWD, "./59/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... close resumed>) = 0 [pid 5422] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5421] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./57/bus") = 0 [pid 5056] umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./57/binderfs", [pid 5422] <... prctl resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5421] close(4 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5423 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5422] setpgid(0, 0 [pid 5421] <... close resumed>) = 0 [pid 5422] <... setpgid resumed>) = 0 [pid 5421] mkdir("./bus", 0777 [pid 5059] newfstatat(4, "", [pid 5056] unlink("./57/binderfs") = 0 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5421] <... mkdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... close resumed>) = 0 [pid 5421] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5423 attached [pid 5420] creat("./file1", 000 [pid 5056] rmdir("./57" [pid 5422] <... openat resumed>) = 3 [pid 5059] getdents64(4, [pid 5056] <... rmdir resumed>) = 0 [pid 5423] set_robust_list(0x555556c07660, 24 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] mkdir("./58", 0777 [pid 5423] <... set_robust_list resumed>) = 0 [pid 5059] getdents64(4, [pid 5056] <... mkdir resumed>) = 0 [pid 5423] chdir("./59" [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5423] <... chdir resumed>) = 0 [pid 5421] <... mount resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5423] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5422] write(3, "1000", 4 [pid 5059] close(4 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5423] <... prctl resumed>) = 0 [pid 5421] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5420] <... creat resumed>) = 5 [pid 5423] setpgid(0, 0 [pid 5422] <... write resumed>) = 4 [pid 5059] <... close resumed>) = 0 [pid 5423] <... setpgid resumed>) = 0 [pid 5422] close(3 [pid 5421] <... openat resumed>) = 3 [pid 5059] rmdir("./59/bus" [pid 5423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5422] <... close resumed>) = 0 [pid 5423] <... openat resumed>) = 3 [pid 5422] symlink("/dev/binderfs", "./binderfs" [pid 5421] chdir("./bus" [pid 5420] exit_group(0 [pid 5059] <... rmdir resumed>) = 0 [pid 5423] write(3, "1000", 4 [pid 5420] <... exit_group resumed>) = ? [pid 5059] umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5423] <... write resumed>) = 4 [pid 5422] <... symlink resumed>) = 0 [pid 5421] <... chdir resumed>) = 0 [pid 5420] +++ exited with 0 +++ [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5423] close(3 [pid 5421] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] newfstatat(AT_FDCWD, "./59/binderfs", [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5420, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5423] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5423] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5421] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] unlink("./59/binderfs" [pid 5422] memfd_create("syzkaller", 0 [pid 5060] umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5423] memfd_create("syzkaller", 0 [pid 5422] <... memfd_create resumed>) = 3 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... unlink resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] getdents64(3, [pid 5060] <... openat resumed>) = 3 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3 [pid 5423] <... memfd_create resumed>) = 3 [pid 5423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5422] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5421] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] newfstatat(3, "", [pid 5059] <... close resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] rmdir("./59" [pid 5422] <... mmap resumed>) = 0x7f138d200000 [pid 5059] <... rmdir resumed>) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5421] <... symlink resumed>) = 0 [pid 5060] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] mkdir("./60", 0777 [pid 5421] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] <... mkdir resumed>) = 0 [pid 5423] 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"..., 524288 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5422] 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"..., 524288 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5423] <... write resumed>) = 524288 [pid 5421] <... creat resumed>) = 4 [pid 5060] <... umount2 resumed>) = 0 [pid 5421] rename("./bus", "./file2" [ 85.789237][ T5421] loop2: detected capacity change from 0 to 1024 [pid 5060] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5423] munmap(0x7f138d200000, 138412032 [pid 5060] newfstatat(AT_FDCWD, "./57/bus", [pid 5422] <... write resumed>) = 524288 [pid 5421] <... rename resumed>) = -1 EEXIST (File exists) [pid 5422] munmap(0x7f138d200000, 138412032 [pid 5421] memfd_create("syzkaller", 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5423] <... munmap resumed>) = 0 [pid 5421] <... memfd_create resumed>) = 5 [pid 5423] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5422] <... munmap resumed>) = 0 [pid 5060] umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... ioctl resumed>) = 0 [pid 5423] <... openat resumed>) = 4 [pid 5422] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5421] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(3 [pid 5422] <... openat resumed>) = 4 [pid 5060] openat(AT_FDCWD, "./57/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... close resumed>) = 0 [pid 5422] ioctl(4, LOOP_SET_FD, 3 [pid 5060] <... openat resumed>) = 4 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5424 attached [pid 5423] ioctl(4, LOOP_SET_FD, 3 [pid 5422] <... ioctl resumed>) = 0 [pid 5421] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] newfstatat(4, "", [pid 5059] <... ioctl resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5424 [pid 5060] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4) = 0 [pid 5060] rmdir("./57/bus") = 0 [pid 5060] umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./57/binderfs") = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3) = 0 [pid 5060] rmdir("./57") = 0 [pid 5424] set_robust_list(0x555556c07660, 24 [pid 5423] <... ioctl resumed>) = 0 [pid 5422] close(3 [pid 5060] mkdir("./58", 0777 [pid 5424] <... set_robust_list resumed>) = 0 [pid 5423] close(3 [pid 5422] <... close resumed>) = 0 [pid 5421] <... write resumed>) = 524288 [pid 5060] <... mkdir resumed>) = 0 [pid 5424] chdir("./58" [pid 5422] close(4 [pid 5421] munmap(0x7f138d200000, 138412032 [pid 5422] <... close resumed>) = 0 [pid 5059] close(3) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5424] <... chdir resumed>) = 0 [pid 5423] <... close resumed>) = 0 [pid 5422] mkdir("./bus", 0777 [pid 5421] <... munmap resumed>) = 0 [pid 5424] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5423] close(4 [pid 5424] <... prctl resumed>) = 0 [pid 5421] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5423] <... close resumed>) = 0 [pid 5424] setpgid(0, 0 [pid 5423] mkdir("./bus", 0777 [pid 5422] <... mkdir resumed>) = 0 [pid 5421] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5424] <... setpgid resumed>) = 0 [pid 5421] close(5 [pid 5060] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5423] <... mkdir resumed>) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5425 [pid 5421] <... close resumed>) = 0 [pid 5424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5423] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5422] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5424] <... openat resumed>) = 3 [pid 5424] write(3, "1000", 4./strace-static-x86_64: Process 5425 attached [pid 5425] set_robust_list(0x555556c07660, 24) = 0 [pid 5425] chdir("./60" [pid 5424] <... write resumed>) = 4 [pid 5424] close(3) = 0 [pid 5425] <... chdir resumed>) = 0 [pid 5424] symlink("/dev/binderfs", "./binderfs" [pid 5425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5424] <... symlink resumed>) = 0 [pid 5425] setpgid(0, 0 [pid 5424] memfd_create("syzkaller", 0 [pid 5425] <... setpgid resumed>) = 0 [pid 5425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5421] creat("./file1", 000 [pid 5425] write(3, "1000", 4 [pid 5424] <... memfd_create resumed>) = 3 [pid 5425] <... write resumed>) = 4 [pid 5425] close(3 [pid 5424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5425] <... close resumed>) = 0 [pid 5425] symlink("/dev/binderfs", "./binderfs" [pid 5424] <... mmap resumed>) = 0x7f138d200000 [pid 5425] <... symlink resumed>) = 0 [pid 5424] 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"..., 524288 [pid 5423] <... mount resumed>) = 0 [pid 5422] <... mount resumed>) = 0 [pid 5421] <... creat resumed>) = 5 [pid 5425] memfd_create("syzkaller", 0 [pid 5423] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5421] exit_group(0 [pid 5425] <... memfd_create resumed>) = 3 [pid 5423] <... openat resumed>) = 3 [pid 5422] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5421] <... exit_group resumed>) = ? [ 85.877957][ T5422] loop5: detected capacity change from 0 to 1024 [ 85.887818][ T5423] loop1: detected capacity change from 0 to 1024 [pid 5425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5423] chdir("./bus" [pid 5422] <... openat resumed>) = 3 [pid 5423] <... chdir resumed>) = 0 [pid 5422] chdir("./bus" [pid 5425] 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"..., 524288 [pid 5423] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5422] <... chdir resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5423] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5422] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5423] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5422] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5421] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5421, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5058] umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5422] <... symlink resumed>) = 0 [pid 5060] close(3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5423] <... symlink resumed>) = 0 [pid 5422] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] <... close resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5425] <... write resumed>) = 524288 [pid 5424] <... write resumed>) = 524288 [pid 5423] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, [pid 5422] <... creat resumed>) = 4 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5422] rename("./bus", "./file2" [pid 5424] munmap(0x7f138d200000, 138412032 [pid 5423] <... creat resumed>) = 4 [pid 5424] <... munmap resumed>) = 0 [pid 5422] <... rename resumed>) = -1 EEXIST (File exists) ./strace-static-x86_64: Process 5426 attached [pid 5424] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5423] rename("./bus", "./file2" [pid 5422] memfd_create("syzkaller", 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5423] <... rename resumed>) = -1 EEXIST (File exists) [pid 5422] <... memfd_create resumed>) = 5 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5426 [pid 5424] <... openat resumed>) = 4 [pid 5426] set_robust_list(0x555556c07660, 24) = 0 [pid 5424] ioctl(4, LOOP_SET_FD, 3 [pid 5423] memfd_create("syzkaller", 0 [pid 5422] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5426] chdir("./58" [pid 5423] <... memfd_create resumed>) = 5 [pid 5422] <... mmap resumed>) = 0x7f138d200000 [pid 5423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5422] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5425] munmap(0x7f138d200000, 138412032 [pid 5423] <... mmap resumed>) = 0x7f138d200000 [pid 5425] <... munmap resumed>) = 0 [pid 5423] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5058] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5426] <... chdir resumed>) = 0 [pid 5424] <... ioctl resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5426] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] newfstatat(AT_FDCWD, "./58/bus", [pid 5426] <... prctl resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5426] setpgid(0, 0 [pid 5425] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5425] <... openat resumed>) = 4 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5425] ioctl(4, LOOP_SET_FD, 3 [pid 5058] openat(AT_FDCWD, "./58/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5426] <... setpgid resumed>) = 0 [pid 5425] <... ioctl resumed>) = 0 [pid 5424] close(3 [pid 5058] <... openat resumed>) = 4 [pid 5424] <... close resumed>) = 0 [pid 5426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5424] close(4 [pid 5058] newfstatat(4, "", [pid 5424] <... close resumed>) = 0 [pid 5424] mkdir("./bus", 0777) = 0 [pid 5423] <... write resumed>) = 524288 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5424] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./58/bus" [pid 5426] <... openat resumed>) = 3 [pid 5058] <... rmdir resumed>) = 0 [pid 5426] write(3, "1000", 4 [pid 5422] <... write resumed>) = 524288 [pid 5426] <... write resumed>) = 4 [pid 5426] close(3 [pid 5058] umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./58/binderfs") = 0 [pid 5422] munmap(0x7f138d200000, 138412032) = 0 [pid 5424] <... mount resumed>) = 0 [pid 5426] <... close resumed>) = 0 [pid 5424] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5426] symlink("/dev/binderfs", "./binderfs" [pid 5423] munmap(0x7f138d200000, 138412032 [pid 5422] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] getdents64(3, [pid 5426] <... symlink resumed>) = 0 [pid 5424] chdir("./bus" [pid 5423] <... munmap resumed>) = 0 [pid 5422] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5424] <... chdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5422] close(5 [pid 5058] rmdir("./58" [pid 5426] memfd_create("syzkaller", 0 [pid 5424] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5423] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5422] <... close resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5425] close(3 [pid 5423] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5423] close(5 [ 85.966602][ T5424] loop0: detected capacity change from 0 to 1024 [ 85.976167][ T5425] loop3: detected capacity change from 0 to 1024 [pid 5058] mkdir("./59", 0777) = 0 [pid 5426] <... memfd_create resumed>) = 3 [pid 5425] <... close resumed>) = 0 [pid 5424] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5423] <... close resumed>) = 0 [pid 5422] creat("./file1", 000 [pid 5426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5425] close(4 [pid 5424] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5426] <... mmap resumed>) = 0x7f138d200000 [pid 5425] <... close resumed>) = 0 [pid 5425] mkdir("./bus", 0777) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5425] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5058] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5423] creat("./file1", 000 [pid 5422] <... creat resumed>) = 5 [pid 5424] <... symlink resumed>) = 0 [pid 5423] <... creat resumed>) = 5 [pid 5422] exit_group(0 [pid 5423] exit_group(0 [pid 5422] <... exit_group resumed>) = ? [pid 5426] 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"..., 524288 [pid 5425] <... mount resumed>) = 0 [pid 5423] <... exit_group resumed>) = ? [pid 5422] +++ exited with 0 +++ [pid 5424] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5425] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5422, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5425] <... openat resumed>) = 3 [pid 5425] chdir("./bus" [pid 5061] umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5425] <... chdir resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5425] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5425] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... openat resumed>) = 3 [pid 5425] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5424] <... creat resumed>) = 4 [pid 5426] <... write resumed>) = 524288 [pid 5425] <... symlink resumed>) = 0 [pid 5424] rename("./bus", "./file2" [pid 5425] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5423] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5423, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5425] <... creat resumed>) = 4 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5426] munmap(0x7f138d200000, 138412032 [pid 5424] <... rename resumed>) = -1 EEXIST (File exists) [pid 5061] <... umount2 resumed>) = 0 [pid 5057] umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5424] memfd_create("syzkaller", 0 [pid 5425] rename("./bus", "./file2" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5426] <... munmap resumed>) = 0 [pid 5424] <... memfd_create resumed>) = 5 [pid 5057] openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", [pid 5424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5426] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5425] <... rename resumed>) = -1 EEXIST (File exists) [pid 5424] <... mmap resumed>) = 0x7f138d200000 [pid 5061] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5425] memfd_create("syzkaller", 0) = 5 [pid 5425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5426] <... openat resumed>) = 4 [pid 5424] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5426] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./60/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./60/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5061] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5061] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5061] close(4) = 0 [pid 5061] rmdir("./60/bus") = 0 [pid 5061] umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] newfstatat(AT_FDCWD, "./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] unlink("./60/binderfs") = 0 [pid 5425] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5061] rmdir("./60") = 0 [pid 5061] mkdir("./61", 0777 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5058] close(3 [pid 5061] <... mkdir resumed>) = 0 [pid 5057] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./59/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5058] <... close resumed>) = 0 [pid 5057] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./59/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5057] newfstatat(4, "", [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5425] <... write resumed>) = 524288 [pid 5057] getdents64(4, [pid 5425] munmap(0x7f138d200000, 138412032 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5425] <... munmap resumed>) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./59/bus") = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5427 [pid 5057] umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5427 attached ) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./59/binderfs", [pid 5427] set_robust_list(0x555556c07660, 24 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5425] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5057] unlink("./59/binderfs" [pid 5427] <... set_robust_list resumed>) = 0 [pid 5425] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... unlink resumed>) = 0 [pid 5425] close(5 [pid 5057] getdents64(3, [pid 5427] chdir("./59" [pid 5425] <... close resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5427] <... chdir resumed>) = 0 [pid 5426] <... ioctl resumed>) = 0 [pid 5424] <... write resumed>) = 524288 [pid 5057] close(3 [pid 5427] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5426] close(3 [pid 5427] <... prctl resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5426] <... close resumed>) = 0 [pid 5427] setpgid(0, 0 [pid 5057] rmdir("./59" [pid 5427] <... setpgid resumed>) = 0 [pid 5426] close(4 [pid 5427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5426] <... close resumed>) = 0 [pid 5424] munmap(0x7f138d200000, 138412032 [pid 5057] <... rmdir resumed>) = 0 [pid 5426] mkdir("./bus", 0777 [pid 5057] mkdir("./60", 0777 [pid 5426] <... mkdir resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5426] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5425] creat("./file1", 000 [pid 5427] <... openat resumed>) = 3 [pid 5424] <... munmap resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5427] write(3, "1000", 4) = 4 [pid 5426] <... mount resumed>) = 0 [pid 5061] close(3 [pid 5427] close(3 [pid 5424] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5427] <... close resumed>) = 0 [pid 5426] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] <... close resumed>) = 0 [pid 5427] symlink("/dev/binderfs", "./binderfs" [pid 5426] <... openat resumed>) = 3 [pid 5424] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5426] chdir("./bus" [pid 5424] close(5 [pid 5426] <... chdir resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5428 [pid 5427] <... symlink resumed>) = 0 [pid 5426] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5427] memfd_create("syzkaller", 0 [pid 5426] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5426] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"./strace-static-x86_64: Process 5428 attached [pid 5428] set_robust_list(0x555556c07660, 24 [pid 5427] <... memfd_create resumed>) = 3 [pid 5426] <... symlink resumed>) = 0 [pid 5424] <... close resumed>) = 0 [pid 5428] <... set_robust_list resumed>) = 0 [pid 5427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5426] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5425] <... creat resumed>) = 5 [ 86.090652][ T5426] loop4: detected capacity change from 0 to 1024 [pid 5428] chdir("./61" [pid 5427] <... mmap resumed>) = 0x7f138d200000 [pid 5424] creat("./file1", 000 [pid 5428] <... chdir resumed>) = 0 [pid 5425] exit_group(0) = ? [pid 5428] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5425] +++ exited with 0 +++ [pid 5428] <... prctl resumed>) = 0 [pid 5426] <... creat resumed>) = 4 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5425, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5428] setpgid(0, 0 [pid 5426] rename("./bus", "./file2" [pid 5428] <... setpgid resumed>) = 0 [pid 5428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5426] <... rename resumed>) = -1 EEXIST (File exists) [pid 5426] memfd_create("syzkaller", 0 [pid 5428] <... openat resumed>) = 3 [pid 5426] <... memfd_create resumed>) = 5 [pid 5428] write(3, "1000", 4 [pid 5426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5424] <... creat resumed>) = 5 [pid 5059] umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... ioctl resumed>) = 0 [pid 5428] <... write resumed>) = 4 [pid 5427] 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"..., 524288 [pid 5426] <... mmap resumed>) = 0x7f138d200000 [pid 5424] exit_group(0 [pid 5428] close(3 [pid 5424] <... exit_group resumed>) = ? [pid 5424] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5424, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5427] <... write resumed>) = 524288 [pid 5428] <... close resumed>) = 0 [pid 5427] munmap(0x7f138d200000, 138412032 [pid 5426] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5428] symlink("/dev/binderfs", "./binderfs" [pid 5059] openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] close(3) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5056] umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5427] <... munmap resumed>) = 0 [pid 5059] newfstatat(3, "", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5429 attached [pid 5428] <... symlink resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5429 [pid 5056] openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5429] set_robust_list(0x555556c07660, 24) = 0 [pid 5429] chdir("./60") = 0 [pid 5429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5429] setpgid(0, 0) = 0 [pid 5429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5429] <... openat resumed>) = 3 [pid 5428] memfd_create("syzkaller", 0 [pid 5059] getdents64(3, [pid 5056] newfstatat(3, "", [pid 5427] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5428] <... memfd_create resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5427] <... openat resumed>) = 4 [pid 5428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5427] ioctl(4, LOOP_SET_FD, 3 [pid 5056] getdents64(3, [pid 5429] write(3, "1000", 4) = 4 [pid 5429] close(3) = 0 [pid 5429] symlink("/dev/binderfs", "./binderfs" [pid 5426] <... write resumed>) = 524288 [pid 5429] <... symlink resumed>) = 0 [pid 5428] <... mmap resumed>) = 0x7f138d200000 [pid 5427] <... ioctl resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5429] memfd_create("syzkaller", 0 [pid 5426] munmap(0x7f138d200000, 138412032) = 0 [pid 5429] <... memfd_create resumed>) = 3 [pid 5428] 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"..., 524288 [pid 5059] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5427] close(3 [pid 5426] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5426] close(5 [pid 5427] <... close resumed>) = 0 [pid 5427] close(4 [pid 5056] <... umount2 resumed>) = 0 [pid 5427] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5427] mkdir("./bus", 0777 [pid 5429] 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"..., 524288 [pid 5428] <... write resumed>) = 524288 [pid 5427] <... mkdir resumed>) = 0 [pid 5059] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5429] <... write resumed>) = 524288 [pid 5428] munmap(0x7f138d200000, 138412032 [pid 5427] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5426] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5429] munmap(0x7f138d200000, 138412032 [pid 5428] <... munmap resumed>) = 0 [pid 5427] <... mount resumed>) = 0 [pid 5426] creat("./file1", 000 [pid 5059] newfstatat(AT_FDCWD, "./60/bus", [pid 5056] newfstatat(AT_FDCWD, "./58/bus", [pid 5428] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5427] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5429] <... munmap resumed>) = 0 [pid 5428] <... openat resumed>) = 4 [pid 5427] <... openat resumed>) = 3 [pid 5426] <... creat resumed>) = 5 [pid 5059] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [ 86.198739][ T5427] loop2: detected capacity change from 0 to 1024 [pid 5428] ioctl(4, LOOP_SET_FD, 3 [pid 5427] chdir("./bus" [pid 5426] exit_group(0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5429] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5428] <... ioctl resumed>) = 0 [pid 5427] <... chdir resumed>) = 0 [pid 5426] <... exit_group resumed>) = ? [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./60/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5429] <... openat resumed>) = 4 [pid 5059] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5429] ioctl(4, LOOP_SET_FD, 3 [pid 5059] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5426] +++ exited with 0 +++ [pid 5059] close(4) = 0 [pid 5056] openat(AT_FDCWD, "./58/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] rmdir("./60/bus" [pid 5056] <... openat resumed>) = 4 [pid 5427] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5426, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5059] <... rmdir resumed>) = 0 [pid 5056] newfstatat(4, "", [pid 5427] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(4, [pid 5060] openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... openat resumed>) = 3 [pid 5056] getdents64(4, [pid 5060] newfstatat(3, "", [pid 5059] newfstatat(AT_FDCWD, "./60/binderfs", [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5429] <... ioctl resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] close(4 [pid 5427] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] getdents64(3, [pid 5059] unlink("./60/binderfs" [pid 5056] <... close resumed>) = 0 [pid 5429] close(3 [pid 5427] <... symlink resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] <... unlink resumed>) = 0 [pid 5056] rmdir("./58/bus" [pid 5429] <... close resumed>) = 0 [pid 5428] close(3 [pid 5060] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5429] close(4 [pid 5428] <... close resumed>) = 0 [pid 5427] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] getdents64(3, [pid 5056] umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5429] <... close resumed>) = 0 [pid 5428] close(4 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./58/binderfs", [pid 5428] <... close resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] unlink("./58/binderfs" [pid 5059] close(3 [pid 5056] <... unlink resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5056] getdents64(3, [pid 5428] mkdir("./bus", 0777 [pid 5059] rmdir("./60" [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5429] mkdir("./bus", 0777 [pid 5059] <... rmdir resumed>) = 0 [pid 5056] close(3) = 0 [pid 5427] <... creat resumed>) = 4 [pid 5056] rmdir("./58" [pid 5429] <... mkdir resumed>) = 0 [pid 5427] rename("./bus", "./file2" [pid 5059] mkdir("./61", 0777 [pid 5056] <... rmdir resumed>) = 0 [pid 5429] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5428] <... mkdir resumed>) = 0 [pid 5427] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... mkdir resumed>) = 0 [pid 5056] mkdir("./59", 0777 [pid 5427] memfd_create("syzkaller", 0) = 5 [pid 5056] <... mkdir resumed>) = 0 [pid 5427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5428] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5427] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5429] <... mount resumed>) = 0 [pid 5429] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5427] <... write resumed>) = 524288 [pid 5429] <... openat resumed>) = 3 [pid 5428] <... mount resumed>) = 0 [pid 5060] <... umount2 resumed>) = 0 [pid 5427] munmap(0x7f138d200000, 138412032 [pid 5060] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5427] <... munmap resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5428] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] newfstatat(AT_FDCWD, "./58/bus", [pid 5428] <... openat resumed>) = 3 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5427] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5427] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] openat(AT_FDCWD, "./58/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5060] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5428] chdir("./bus" [pid 5429] chdir("./bus" [pid 5428] <... chdir resumed>) = 0 [pid 5429] <... chdir resumed>) = 0 [pid 5427] close(5 [pid 5060] getdents64(4, [pid 5429] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5428] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5429] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5428] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5429] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5428] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5060] close(4) = 0 [pid 5060] rmdir("./58/bus") = 0 [ 86.246830][ T5428] loop5: detected capacity change from 0 to 1024 [ 86.255916][ T5429] loop1: detected capacity change from 0 to 1024 [pid 5060] umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5428] <... symlink resumed>) = 0 [pid 5427] <... close resumed>) = 0 [pid 5427] creat("./file1", 000 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5429] <... symlink resumed>) = 0 [pid 5428] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5429] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5060] newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] unlink("./58/binderfs") = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5428] <... creat resumed>) = 4 [pid 5060] getdents64(3, [pid 5059] <... ioctl resumed>) = 0 [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] close(3 [pid 5429] <... creat resumed>) = 4 [pid 5428] rename("./bus", "./file2" [pid 5060] <... close resumed>) = 0 [pid 5429] rename("./bus", "./file2" [pid 5060] rmdir("./58") = 0 [pid 5060] mkdir("./59", 0777) = 0 [pid 5429] <... rename resumed>) = -1 EEXIST (File exists) [pid 5427] <... creat resumed>) = 5 [pid 5427] exit_group(0 [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5429] memfd_create("syzkaller", 0 [pid 5427] <... exit_group resumed>) = ? [pid 5060] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5429] <... memfd_create resumed>) = 5 [pid 5427] +++ exited with 0 +++ [pid 5429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5427, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5059] close(3 [pid 5429] <... mmap resumed>) = 0x7f138d200000 [pid 5428] <... rename resumed>) = -1 EEXIST (File exists) [pid 5059] <... close resumed>) = 0 [pid 5058] umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5428] memfd_create("syzkaller", 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5429] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5428] <... memfd_create resumed>) = 5 [pid 5058] openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] close(3./strace-static-x86_64: Process 5430 attached ) = 0 [pid 5430] set_robust_list(0x555556c07660, 24 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5430] <... set_robust_list resumed>) = 0 [pid 5430] chdir("./61") = 0 [pid 5430] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5431 attached ) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5430 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5431 [pid 5431] set_robust_list(0x555556c07660, 24 [pid 5430] setpgid(0, 0) = 0 [pid 5430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5431] <... set_robust_list resumed>) = 0 [pid 5431] chdir("./59" [pid 5430] <... openat resumed>) = 3 [pid 5431] <... chdir resumed>) = 0 [pid 5430] write(3, "1000", 4 [pid 5431] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5430] <... write resumed>) = 4 [pid 5428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", [pid 5431] <... prctl resumed>) = 0 [pid 5430] close(3 [pid 5428] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5431] setpgid(0, 0 [pid 5430] <... close resumed>) = 0 [pid 5431] <... setpgid resumed>) = 0 [pid 5430] symlink("/dev/binderfs", "./binderfs" [pid 5431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5430] <... symlink resumed>) = 0 [pid 5058] getdents64(3, [pid 5431] <... openat resumed>) = 3 [pid 5430] memfd_create("syzkaller", 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5058] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5430] <... memfd_create resumed>) = 3 [pid 5431] write(3, "1000", 4 [pid 5430] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5431] <... write resumed>) = 4 [pid 5430] <... mmap resumed>) = 0x7f138d200000 [pid 5428] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5431] close(3) = 0 [pid 5431] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5431] memfd_create("syzkaller", 0) = 3 [pid 5430] 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"..., 524288 [pid 5429] <... write resumed>) = 524288 [pid 5428] <... write resumed>) = 524288 [pid 5058] <... umount2 resumed>) = 0 [pid 5431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5430] <... write resumed>) = 524288 [pid 5429] munmap(0x7f138d200000, 138412032 [pid 5428] munmap(0x7f138d200000, 138412032 [pid 5058] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./59/bus", [pid 5431] <... mmap resumed>) = 0x7f138d200000 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5430] munmap(0x7f138d200000, 138412032 [pid 5058] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5430] <... munmap resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./59/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5430] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] <... openat resumed>) = 4 [pid 5430] <... openat resumed>) = 4 [pid 5058] newfstatat(4, "", [pid 5428] <... munmap resumed>) = 0 [pid 5429] <... munmap resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5430] ioctl(4, LOOP_SET_FD, 3 [pid 5058] getdents64(4, [pid 5429] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5428] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5429] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5428] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5428] close(5) = 0 [pid 5431] 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"..., 524288 [pid 5429] close(5 [pid 5060] <... ioctl resumed>) = 0 [pid 5431] <... write resumed>) = 524288 [pid 5429] <... close resumed>) = 0 [pid 5060] close(3 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5060] <... close resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5428] creat("./file1", 000 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./59/bus" [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5432 [pid 5058] <... rmdir resumed>) = 0 [pid 5058] umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5429] creat("./file1", 000 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5432 attached [pid 5431] munmap(0x7f138d200000, 138412032 [pid 5058] newfstatat(AT_FDCWD, "./59/binderfs", [pid 5432] set_robust_list(0x555556c07660, 24 [pid 5431] <... munmap resumed>) = 0 [pid 5430] <... ioctl resumed>) = 0 [pid 5428] <... creat resumed>) = 5 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5432] <... set_robust_list resumed>) = 0 [pid 5430] close(3 [pid 5428] exit_group(0 [pid 5058] unlink("./59/binderfs" [pid 5432] chdir("./59" [pid 5431] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... unlink resumed>) = 0 [pid 5432] <... chdir resumed>) = 0 [pid 5431] <... openat resumed>) = 4 [pid 5430] <... close resumed>) = 0 [pid 5058] getdents64(3, [pid 5431] ioctl(4, LOOP_SET_FD, 3 [pid 5430] close(4 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5432] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] close(3 [pid 5430] <... close resumed>) = 0 [pid 5432] <... prctl resumed>) = 0 [pid 5430] mkdir("./bus", 0777 [pid 5429] <... creat resumed>) = 5 [pid 5428] <... exit_group resumed>) = ? [pid 5058] <... close resumed>) = 0 [pid 5432] setpgid(0, 0 [pid 5058] rmdir("./59" [pid 5432] <... setpgid resumed>) = 0 [pid 5432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5430] <... mkdir resumed>) = 0 [pid 5429] exit_group(0 [pid 5428] +++ exited with 0 +++ [pid 5058] <... rmdir resumed>) = 0 [pid 5429] <... exit_group resumed>) = ? [pid 5432] <... openat resumed>) = 3 [pid 5430] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5429] +++ exited with 0 +++ [pid 5058] mkdir("./60", 0777 [pid 5432] write(3, "1000", 4 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5429, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5428, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5061] umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5432] <... write resumed>) = 4 [pid 5061] newfstatat(3, "", [pid 5432] close(3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5432] <... close resumed>) = 0 [pid 5061] getdents64(3, [pid 5058] <... mkdir resumed>) = 0 [pid 5057] newfstatat(3, "", [pid 5432] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5432] <... symlink resumed>) = 0 [pid 5057] getdents64(3, [pid 5432] memfd_create("syzkaller", 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5432] <... memfd_create resumed>) = 3 [pid 5432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5432] <... mmap resumed>) = 0x7f138d200000 [pid 5431] <... ioctl resumed>) = 0 [pid 5431] close(3) = 0 [pid 5431] close(4) = 0 [pid 5431] mkdir("./bus", 0777) = 0 [pid 5431] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... umount2 resumed>) = 0 [pid 5431] <... mount resumed>) = 0 [pid 5061] umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5431] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] newfstatat(AT_FDCWD, "./61/bus", [pid 5431] <... openat resumed>) = 3 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5431] chdir("./bus" [pid 5061] openat(AT_FDCWD, "./61/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5431] <... chdir resumed>) = 0 [pid 5061] <... openat resumed>) = 4 [pid 5057] <... umount2 resumed>) = 0 [pid 5057] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5431] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] newfstatat(AT_FDCWD, "./60/bus", [pid 5431] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5061] newfstatat(4, "", [pid 5057] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5430] <... mount resumed>) = 0 [pid 5431] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5432] 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"..., 524288 [pid 5430] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] getdents64(4, [pid 5057] openat(AT_FDCWD, "./60/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5431] <... symlink resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5431] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, [pid 5061] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [ 86.383994][ T5430] loop3: detected capacity change from 0 to 1024 [ 86.417059][ T5431] loop0: detected capacity change from 0 to 1024 [pid 5057] <... close resumed>) = 0 [pid 5432] <... write resumed>) = 524288 [pid 5430] <... openat resumed>) = 3 [pid 5061] close(4 [pid 5057] rmdir("./60/bus" [pid 5431] <... creat resumed>) = 4 [pid 5430] chdir("./bus" [pid 5061] <... close resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5431] rename("./bus", "./file2" [pid 5430] <... chdir resumed>) = 0 [pid 5061] rmdir("./61/bus" [pid 5057] umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5432] munmap(0x7f138d200000, 138412032 [pid 5430] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... rmdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5431] <... rename resumed>) = -1 EEXIST (File exists) [pid 5057] newfstatat(AT_FDCWD, "./60/binderfs", [pid 5061] umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5432] <... munmap resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] unlink("./60/binderfs" [pid 5432] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5431] memfd_create("syzkaller", 0 [pid 5430] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] newfstatat(AT_FDCWD, "./61/binderfs", [pid 5057] <... unlink resumed>) = 0 [pid 5430] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5431] <... memfd_create resumed>) = 5 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] unlink("./61/binderfs" [pid 5057] close(3 [pid 5431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5061] <... unlink resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5430] <... symlink resumed>) = 0 [pid 5057] rmdir("./60" [pid 5432] <... openat resumed>) = 4 [pid 5431] <... mmap resumed>) = 0x7f138d200000 [pid 5430] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] <... rmdir resumed>) = 0 [pid 5061] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5061] close(3) = 0 [pid 5057] mkdir("./61", 0777 [pid 5061] rmdir("./61") = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5061] mkdir("./62", 0777 [pid 5432] ioctl(4, LOOP_SET_FD, 3 [pid 5431] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5430] <... creat resumed>) = 4 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5430] rename("./bus", "./file2" [pid 5061] <... mkdir resumed>) = 0 [pid 5430] <... rename resumed>) = -1 EEXIST (File exists) [pid 5057] <... openat resumed>) = 3 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5061] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5432] <... ioctl resumed>) = 0 [pid 5431] <... write resumed>) = 524288 [pid 5430] memfd_create("syzkaller", 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5432] close(3 [pid 5430] <... memfd_create resumed>) = 5 [pid 5058] close(3 [pid 5432] <... close resumed>) = 0 [pid 5430] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... close resumed>) = 0 [pid 5432] close(4 [pid 5430] <... mmap resumed>) = 0x7f138d200000 [pid 5432] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5432] mkdir("./bus", 0777 [pid 5430] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5432] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5433 attached [pid 5431] munmap(0x7f138d200000, 138412032 [pid 5430] <... write resumed>) = 524288 [pid 5061] <... ioctl resumed>) = 0 [pid 5061] close(3 [pid 5432] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] <... close resumed>) = 0 [pid 5433] set_robust_list(0x555556c07660, 24 [pid 5431] <... munmap resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5433 [pid 5433] <... set_robust_list resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5433] chdir("./60") = 0 [pid 5431] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] close(3./strace-static-x86_64: Process 5434 attached [pid 5433] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5431] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5430] munmap(0x7f138d200000, 138412032 [pid 5434] set_robust_list(0x555556c07660, 24 [pid 5433] <... prctl resumed>) = 0 [pid 5431] close(5 [pid 5057] <... close resumed>) = 0 [pid 5434] <... set_robust_list resumed>) = 0 [pid 5433] setpgid(0, 0 [pid 5431] <... close resumed>) = 0 [pid 5430] <... munmap resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5434 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5434] chdir("./62" [pid 5433] <... setpgid resumed>) = 0 [pid 5434] <... chdir resumed>) = 0 [pid 5430] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5434] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5432] <... mount resumed>) = 0 [pid 5430] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5434] <... prctl resumed>) = 0 [pid 5430] close(5 [pid 5434] setpgid(0, 0 [pid 5433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 86.489831][ T5432] loop4: detected capacity change from 0 to 1024 [pid 5432] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5433] <... openat resumed>) = 3 [pid 5432] <... openat resumed>) = 3 [pid 5432] chdir("./bus" [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5435 [pid 5432] <... chdir resumed>) = 0 [pid 5432] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5433] write(3, "1000", 4 [pid 5432] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5433] <... write resumed>) = 4 [pid 5433] close(3 [pid 5432] <... symlink resumed>) = 0 [pid 5433] <... close resumed>) = 0 [pid 5433] symlink("/dev/binderfs", "./binderfs" [pid 5431] creat("./file1", 000./strace-static-x86_64: Process 5435 attached [pid 5434] <... setpgid resumed>) = 0 [pid 5433] <... symlink resumed>) = 0 [pid 5432] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5430] <... close resumed>) = 0 [pid 5435] set_robust_list(0x555556c07660, 24) = 0 [pid 5434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5430] creat("./file1", 000 [pid 5434] <... openat resumed>) = 3 [pid 5435] chdir("./61" [pid 5434] write(3, "1000", 4 [pid 5433] memfd_create("syzkaller", 0) = 3 [pid 5434] <... write resumed>) = 4 [pid 5435] <... chdir resumed>) = 0 [pid 5434] close(3 [pid 5433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5435] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5434] <... close resumed>) = 0 [pid 5433] <... mmap resumed>) = 0x7f138d200000 [pid 5435] <... prctl resumed>) = 0 [pid 5434] symlink("/dev/binderfs", "./binderfs" [pid 5435] setpgid(0, 0 [pid 5434] <... symlink resumed>) = 0 [pid 5433] 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"..., 524288 [pid 5432] <... creat resumed>) = 4 [pid 5430] <... creat resumed>) = 5 [pid 5435] <... setpgid resumed>) = 0 [pid 5434] memfd_create("syzkaller", 0 [pid 5432] rename("./bus", "./file2" [pid 5430] exit_group(0 [pid 5435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5434] <... memfd_create resumed>) = 3 [pid 5431] <... creat resumed>) = 5 [pid 5430] <... exit_group resumed>) = ? [pid 5431] exit_group(0 [pid 5435] <... openat resumed>) = 3 [pid 5431] <... exit_group resumed>) = ? [pid 5435] write(3, "1000", 4 [pid 5434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5431] +++ exited with 0 +++ [pid 5430] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5430, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5431, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5435] <... write resumed>) = 4 [pid 5434] <... mmap resumed>) = 0x7f138d200000 [pid 5435] close(3 [pid 5434] 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"..., 524288 [pid 5433] <... write resumed>) = 524288 [pid 5432] <... rename resumed>) = -1 EEXIST (File exists) [pid 5056] umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5435] <... close resumed>) = 0 [pid 5435] symlink("/dev/binderfs", "./binderfs" [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... openat resumed>) = 3 [pid 5432] memfd_create("syzkaller", 0 [pid 5059] <... openat resumed>) = 3 [pid 5056] newfstatat(3, "", [pid 5432] <... memfd_create resumed>) = 5 [pid 5059] newfstatat(3, "", [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5432] <... mmap resumed>) = 0x7f138d200000 [pid 5059] getdents64(3, [pid 5056] getdents64(3, [pid 5432] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5435] <... symlink resumed>) = 0 [pid 5434] <... write resumed>) = 524288 [pid 5435] memfd_create("syzkaller", 0 [pid 5434] munmap(0x7f138d200000, 138412032 [pid 5433] munmap(0x7f138d200000, 138412032 [pid 5059] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5435] <... memfd_create resumed>) = 3 [pid 5434] <... munmap resumed>) = 0 [pid 5433] <... munmap resumed>) = 0 [pid 5432] <... write resumed>) = 524288 [pid 5059] umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./61/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5433] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5432] munmap(0x7f138d200000, 138412032 [pid 5059] openat(AT_FDCWD, "./61/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5434] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5059] <... openat resumed>) = 4 [pid 5432] <... munmap resumed>) = 0 [pid 5056] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5434] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", [pid 5435] <... mmap resumed>) = 0x7f138d200000 [pid 5434] ioctl(4, LOOP_SET_FD, 3 [pid 5433] <... openat resumed>) = 4 [pid 5432] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(4, [pid 5056] newfstatat(AT_FDCWD, "./59/bus", [pid 5432] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] getdents64(4, [pid 5056] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(4 [pid 5056] openat(AT_FDCWD, "./59/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5059] rmdir("./61/bus" [pid 5056] newfstatat(4, "", [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5435] 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"..., 524288 [pid 5434] <... ioctl resumed>) = 0 [pid 5433] ioctl(4, LOOP_SET_FD, 3 [pid 5432] close(5 [pid 5059] umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5434] close(3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] getdents64(4, [pid 5434] <... close resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./61/binderfs", [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5434] close(4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] close(4 [pid 5434] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5056] rmdir("./59/bus" [pid 5434] mkdir("./bus", 0777 [pid 5056] <... rmdir resumed>) = 0 [pid 5435] <... write resumed>) = 524288 [pid 5434] <... mkdir resumed>) = 0 [pid 5433] <... ioctl resumed>) = 0 [pid 5432] <... close resumed>) = 0 [pid 5059] unlink("./61/binderfs" [pid 5056] umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5435] munmap(0x7f138d200000, 138412032 [pid 5434] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5433] close(3 [pid 5432] creat("./file1", 000 [pid 5059] <... unlink resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5435] <... munmap resumed>) = 0 [pid 5059] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(AT_FDCWD, "./59/binderfs", [pid 5059] close(3) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] rmdir("./61" [pid 5435] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5433] <... close resumed>) = 0 [pid 5435] <... openat resumed>) = 4 [pid 5433] close(4 [pid 5435] ioctl(4, LOOP_SET_FD, 3 [pid 5433] <... close resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5056] unlink("./59/binderfs" [pid 5434] <... mount resumed>) = 0 [pid 5432] <... creat resumed>) = 5 [pid 5434] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5433] mkdir("./bus", 0777 [pid 5434] <... openat resumed>) = 3 [pid 5433] <... mkdir resumed>) = 0 [pid 5432] exit_group(0 [pid 5434] chdir("./bus") = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5434] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5433] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5434] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5434] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5432] <... exit_group resumed>) = ? [pid 5432] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5432, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5059] mkdir("./62", 0777 [pid 5056] getdents64(3, 0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5434] <... symlink resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5434] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] close(3) = 0 [pid 5056] rmdir("./59" [pid 5059] <... openat resumed>) = 3 [pid 5056] <... rmdir resumed>) = 0 [pid 5060] umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5060] openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5060] getdents64(3, 0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] mkdir("./60", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5434] <... creat resumed>) = 4 [pid 5434] rename("./bus", "./file2" [pid 5060] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5435] <... ioctl resumed>) = 0 [pid 5435] close(3 [pid 5434] <... rename resumed>) = -1 EEXIST (File exists) [pid 5435] <... close resumed>) = 0 [pid 5435] close(4 [pid 5434] memfd_create("syzkaller", 0 [pid 5433] <... mount resumed>) = 0 [pid 5435] <... close resumed>) = 0 [pid 5435] mkdir("./bus", 0777 [pid 5434] <... memfd_create resumed>) = 5 [pid 5433] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5435] <... mkdir resumed>) = 0 [pid 5433] <... openat resumed>) = 3 [pid 5433] chdir("./bus" [pid 5435] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5433] <... chdir resumed>) = 0 [pid 5434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5433] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5434] <... mmap resumed>) = 0x7f138d200000 [pid 5433] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5433] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5435] <... mount resumed>) = 0 [pid 5434] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] <... umount2 resumed>) = 0 [ 86.628905][ T5434] loop5: detected capacity change from 0 to 1024 [ 86.643163][ T5433] loop2: detected capacity change from 0 to 1024 [ 86.665460][ T5435] loop1: detected capacity change from 0 to 1024 [pid 5435] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5433] <... symlink resumed>) = 0 [pid 5434] <... write resumed>) = 524288 [pid 5060] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5435] <... openat resumed>) = 3 [pid 5435] chdir("./bus" [pid 5433] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5435] <... chdir resumed>) = 0 [pid 5435] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5435] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5434] munmap(0x7f138d200000, 138412032 [pid 5433] <... creat resumed>) = 4 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... ioctl resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./59/bus", [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5434] <... munmap resumed>) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 5436 attached [pid 5435] <... symlink resumed>) = 0 [pid 5434] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5433] rename("./bus", "./file2" [pid 5436] set_robust_list(0x555556c07660, 24) = 0 [pid 5434] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5433] <... rename resumed>) = -1 EEXIST (File exists) [pid 5434] close(5 [pid 5433] memfd_create("syzkaller", 0 [pid 5435] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5433] <... memfd_create resumed>) = 5 [pid 5056] <... clone resumed>, child_tidptr=0x555556c07650) = 5436 [pid 5436] chdir("./60" [pid 5433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5433] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5060] umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... ioctl resumed>) = 0 [pid 5436] <... chdir resumed>) = 0 [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5436] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5060] openat(AT_FDCWD, "./59/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5436] <... prctl resumed>) = 0 [pid 5436] setpgid(0, 0 [pid 5435] <... creat resumed>) = 4 [pid 5434] <... close resumed>) = 0 [pid 5060] <... openat resumed>) = 4 [pid 5436] <... setpgid resumed>) = 0 [pid 5435] rename("./bus", "./file2" [pid 5436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5435] <... rename resumed>) = -1 EEXIST (File exists) [pid 5435] memfd_create("syzkaller", 0 [pid 5436] write(3, "1000", 4 [pid 5435] <... memfd_create resumed>) = 5 [pid 5434] creat("./file1", 000 [pid 5060] newfstatat(4, "", [pid 5059] close(3 [pid 5436] <... write resumed>) = 4 [pid 5435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5436] close(3 [pid 5435] <... mmap resumed>) = 0x7f138d200000 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... close resumed>) = 0 [pid 5436] <... close resumed>) = 0 [pid 5435] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5434] <... creat resumed>) = 5 [pid 5433] <... write resumed>) = 524288 [pid 5060] getdents64(4, [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5436] symlink("/dev/binderfs", "./binderfs" [pid 5434] exit_group(0./strace-static-x86_64: Process 5437 attached [pid 5436] <... symlink resumed>) = 0 [pid 5434] <... exit_group resumed>) = ? [pid 5060] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5437] set_robust_list(0x555556c07660, 24 [pid 5060] getdents64(4, [pid 5434] +++ exited with 0 +++ [pid 5060] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5437] <... set_robust_list resumed>) = 0 [pid 5436] memfd_create("syzkaller", 0 [pid 5060] close(4 [pid 5059] <... clone resumed>, child_tidptr=0x555556c07650) = 5437 [pid 5060] <... close resumed>) = 0 [pid 5060] rmdir("./59/bus" [pid 5437] chdir("./62") = 0 [pid 5436] <... memfd_create resumed>) = 3 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5434, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5060] <... rmdir resumed>) = 0 [pid 5437] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5437] <... prctl resumed>) = 0 [pid 5060] umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5437] setpgid(0, 0 [pid 5436] <... mmap resumed>) = 0x7f138d200000 [pid 5435] <... write resumed>) = 524288 [pid 5061] umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5437] <... setpgid resumed>) = 0 [pid 5060] newfstatat(AT_FDCWD, "./59/binderfs", [pid 5433] munmap(0x7f138d200000, 138412032 [pid 5437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5433] <... munmap resumed>) = 0 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5437] write(3, "1000", 4 [pid 5061] openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5060] unlink("./59/binderfs" [pid 5437] <... write resumed>) = 4 [pid 5437] close(3 [pid 5061] <... openat resumed>) = 3 [pid 5060] <... unlink resumed>) = 0 [pid 5437] <... close resumed>) = 0 [pid 5061] newfstatat(3, "", [pid 5060] getdents64(3, [pid 5433] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5433] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5433] close(5 [pid 5437] symlink("/dev/binderfs", "./binderfs" [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5437] <... symlink resumed>) = 0 [pid 5436] 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"..., 524288 [pid 5435] munmap(0x7f138d200000, 138412032 [pid 5060] close(3 [pid 5061] getdents64(3, [pid 5437] memfd_create("syzkaller", 0 [pid 5435] <... munmap resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5060] <... close resumed>) = 0 [pid 5061] umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5060] rmdir("./59" [pid 5437] <... memfd_create resumed>) = 3 [pid 5433] <... close resumed>) = 0 [pid 5060] <... rmdir resumed>) = 0 [pid 5437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5435] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] mkdir("./60", 0777 [pid 5437] <... mmap resumed>) = 0x7f138d200000 [pid 5435] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5435] close(5 [pid 5437] 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"..., 524288 [pid 5060] <... mkdir resumed>) = 0 [pid 5433] creat("./file1", 000) = 5 [pid 5433] exit_group(0) = ? [pid 5433] +++ exited with 0 +++ [pid 5060] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5433, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5437] <... write resumed>) = 524288 [pid 5436] <... write resumed>) = 524288 [pid 5435] <... close resumed>) = 0 [pid 5060] <... openat resumed>) = 3 [pid 5058] umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5061] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5437] munmap(0x7f138d200000, 138412032 [pid 5436] munmap(0x7f138d200000, 138412032 [pid 5435] creat("./file1", 000 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5437] <... munmap resumed>) = 0 [pid 5436] <... munmap resumed>) = 0 [pid 5061] newfstatat(AT_FDCWD, "./62/bus", [pid 5058] <... openat resumed>) = 3 [pid 5437] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5436] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5437] <... openat resumed>) = 4 [pid 5436] <... openat resumed>) = 4 [pid 5061] umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(3, "", [pid 5437] ioctl(4, LOOP_SET_FD, 3 [pid 5436] ioctl(4, LOOP_SET_FD, 3 [pid 5061] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5061] openat(AT_FDCWD, "./62/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5436] <... ioctl resumed>) = 0 [pid 5435] <... creat resumed>) = 5 [pid 5061] <... openat resumed>) = 4 [pid 5436] close(3 [pid 5435] exit_group(0) = ? [pid 5435] +++ exited with 0 +++ [pid 5436] <... close resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5435, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5436] close(4 [pid 5057] umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5437] <... ioctl resumed>) = 0 [pid 5061] newfstatat(4, "", [pid 5058] getdents64(3, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5437] close(3 [pid 5436] <... close resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5057] <... openat resumed>) = 3 [pid 5437] <... close resumed>) = 0 [pid 5436] mkdir("./bus", 0777 [pid 5061] getdents64(4, [pid 5058] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(3, "", [pid 5437] close(4 [pid 5061] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5061] getdents64(4, [pid 5057] getdents64(3, [pid 5061] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5061] close(4 [pid 5057] umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5437] <... close resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5437] mkdir("./bus", 0777 [pid 5061] rmdir("./62/bus") = 0 [pid 5437] <... mkdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5436] <... mkdir resumed>) = 0 [pid 5061] umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5436] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5061] newfstatat(AT_FDCWD, "./62/binderfs", [pid 5057] umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5437] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5436] <... mount resumed>) = 0 [pid 5061] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5436] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] unlink("./62/binderfs" [pid 5058] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5436] <... openat resumed>) = 3 [pid 5061] <... unlink resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./61/bus", [pid 5436] chdir("./bus" [pid 5061] getdents64(3, [pid 5058] newfstatat(AT_FDCWD, "./60/bus", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5436] <... chdir resumed>) = 0 [pid 5057] umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5436] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5436] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... ioctl resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] openat(AT_FDCWD, "./61/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5436] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] close(3 [pid 5057] getdents64(4, [pid 5060] <... close resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5437] <... mount resumed>) = 0 [pid 5436] <... symlink resumed>) = 0 [pid 5061] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(4, [pid 5437] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5061] close(3 [pid 5058] openat(AT_FDCWD, "./60/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5436] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5057] close(4 [pid 5061] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5057] <... close resumed>) = 0 [ 86.831618][ T5436] loop0: detected capacity change from 0 to 1024 [ 86.831860][ T5437] loop3: detected capacity change from 0 to 1024 [pid 5437] <... openat resumed>) = 3 [pid 5061] rmdir("./62" [pid 5058] newfstatat(4, "", [pid 5057] rmdir("./61/bus"./strace-static-x86_64: Process 5438 attached [pid 5437] chdir("./bus" [pid 5061] <... rmdir resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556c07650) = 5438 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5438] set_robust_list(0x555556c07660, 24 [pid 5437] <... chdir resumed>) = 0 [pid 5436] <... creat resumed>) = 4 [pid 5061] mkdir("./63", 0777 [pid 5057] umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5438] <... set_robust_list resumed>) = 0 [pid 5437] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5058] getdents64(4, [pid 5438] chdir("./60" [pid 5058] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5437] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5436] rename("./bus", "./file2" [pid 5437] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5057] newfstatat(AT_FDCWD, "./61/binderfs", [pid 5438] <... chdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5438] setpgid(0, 0 [pid 5057] unlink("./61/binderfs") = 0 [pid 5438] <... setpgid resumed>) = 0 [pid 5438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] getdents64(3, [pid 5058] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3 [pid 5061] <... mkdir resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./61" [pid 5437] <... symlink resumed>) = 0 [pid 5058] close(4) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5436] <... rename resumed>) = -1 EEXIST (File exists) [pid 5058] rmdir("./60/bus" [pid 5438] write(3, "1000", 4) = 4 [pid 5058] <... rmdir resumed>) = 0 [pid 5436] memfd_create("syzkaller", 0 [pid 5438] close(3) = 0 [pid 5438] symlink("/dev/binderfs", "./binderfs" [pid 5436] <... memfd_create resumed>) = 5 [pid 5438] <... symlink resumed>) = 0 [pid 5437] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5061] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] mkdir("./62", 0777 [pid 5436] <... mmap resumed>) = 0x7f138d200000 [pid 5057] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5438] memfd_create("syzkaller", 0 [pid 5436] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5058] umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... openat resumed>) = 3 [pid 5438] <... memfd_create resumed>) = 3 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5058] newfstatat(AT_FDCWD, "./60/binderfs", [pid 5438] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./60/binderfs" [pid 5438] <... mmap resumed>) = 0x7f138d200000 [pid 5437] <... creat resumed>) = 4 [pid 5436] <... write resumed>) = 524288 [pid 5438] 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"..., 524288 [pid 5437] rename("./bus", "./file2" [pid 5436] munmap(0x7f138d200000, 138412032 [pid 5058] <... unlink resumed>) = 0 [pid 5058] getdents64(3, [pid 5436] <... munmap resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5437] <... rename resumed>) = -1 EEXIST (File exists) [pid 5436] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./60" [pid 5437] memfd_create("syzkaller", 0 [pid 5436] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5058] <... rmdir resumed>) = 0 [pid 5437] <... memfd_create resumed>) = 5 [pid 5058] mkdir("./61", 0777 [pid 5436] close(5 [pid 5058] <... mkdir resumed>) = 0 [pid 5438] <... write resumed>) = 524288 [pid 5437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5436] <... close resumed>) = 0 [pid 5438] munmap(0x7f138d200000, 138412032 [pid 5437] <... mmap resumed>) = 0x7f138d200000 [pid 5436] creat("./file1", 000 [pid 5058] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5438] <... munmap resumed>) = 0 [pid 5436] <... creat resumed>) = 5 [pid 5436] exit_group(0 [pid 5058] <... openat resumed>) = 3 [pid 5436] <... exit_group resumed>) = ? [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5437] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5438] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5438] ioctl(4, LOOP_SET_FD, 3 [pid 5436] +++ exited with 0 +++ [pid 5061] <... ioctl resumed>) = 0 [pid 5437] <... write resumed>) = 524288 [pid 5061] close(3 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5436, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5057] <... ioctl resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5057] close(3 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5439 attached [pid 5439] set_robust_list(0x555556c07660, 24) = 0 [pid 5056] openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5439] chdir("./62") = 0 [pid 5439] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... clone resumed>, child_tidptr=0x555556c07650) = 5439 [pid 5439] <... prctl resumed>) = 0 [pid 5439] setpgid(0, 0) = 0 [pid 5439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5439] write(3, "1000", 4) = 4 [pid 5439] close(3) = 0 [pid 5439] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5439] memfd_create("syzkaller", 0) = 3 [pid 5439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5438] <... ioctl resumed>) = 0 [pid 5438] close(3) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5438] close(4) = 0 [pid 5438] mkdir("./bus", 0777) = 0 [pid 5438] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, ""./strace-static-x86_64: Process 5440 attached [pid 5437] munmap(0x7f138d200000, 138412032 [pid 5061] <... clone resumed>, child_tidptr=0x555556c07650) = 5440 [pid 5056] newfstatat(3, "", [pid 5437] <... munmap resumed>) = 0 [pid 5440] set_robust_list(0x555556c07660, 24 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5437] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] getdents64(3, [pid 5440] <... set_robust_list resumed>) = 0 [pid 5439] 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"..., 524288 [pid 5437] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5440] chdir("./63" [pid 5437] close(5 [pid 5056] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5438] <... mount resumed>) = 0 [pid 5438] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5438] chdir("./bus") = 0 [pid 5438] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5438] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5438] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5437] <... close resumed>) = 0 [pid 5440] <... chdir resumed>) = 0 [pid 5440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5440] setpgid(0, 0) = 0 [pid 5440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5438] <... creat resumed>) = 4 [pid 5438] rename("./bus", "./file2" [pid 5440] <... openat resumed>) = 3 [pid 5438] <... rename resumed>) = -1 EEXIST (File exists) [pid 5440] write(3, "1000", 4 [pid 5439] <... write resumed>) = 524288 [pid 5438] memfd_create("syzkaller", 0 [pid 5440] <... write resumed>) = 4 [pid 5440] close(3) = 0 [pid 5438] <... memfd_create resumed>) = 5 [pid 5438] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f138d200000 [pid 5440] symlink("/dev/binderfs", "./binderfs" [pid 5438] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288 [pid 5437] creat("./file1", 000 [pid 5440] <... symlink resumed>) = 0 [pid 5439] munmap(0x7f138d200000, 138412032) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5439] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [ 86.945148][ T5438] loop4: detected capacity change from 0 to 1024 [pid 5439] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... ioctl resumed>) = 0 [pid 5440] memfd_create("syzkaller", 0 [pid 5438] <... write resumed>) = 524288 [pid 5058] close(3 [pid 5056] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... close resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5437] <... creat resumed>) = 5 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] newfstatat(AT_FDCWD, "./60/bus", [pid 5437] exit_group(0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5438] munmap(0x7f138d200000, 138412032) = 0 [pid 5438] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5056] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5440] <... memfd_create resumed>) = 3 [pid 5437] <... exit_group resumed>) = ? [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5441 attached [pid 5438] close(5 [pid 5441] set_robust_list(0x555556c07660, 24 [pid 5440] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5438] <... close resumed>) = 0 [pid 5437] +++ exited with 0 +++ [pid 5058] <... clone resumed>, child_tidptr=0x555556c07650) = 5441 [pid 5056] openat(AT_FDCWD, "./60/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5441] <... set_robust_list resumed>) = 0 [pid 5440] <... mmap resumed>) = 0x7f138d200000 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5437, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5441] chdir("./61" [pid 5056] <... openat resumed>) = 4 [pid 5441] <... chdir resumed>) = 0 [pid 5441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5059] umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5441] setpgid(0, 0) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5441] <... openat resumed>) = 3 [pid 5059] <... openat resumed>) = 3 [pid 5056] newfstatat(4, "", [pid 5441] write(3, "1000", 4 [pid 5059] newfstatat(3, "", [pid 5441] <... write resumed>) = 4 [pid 5438] creat("./file1", 000 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5441] close(3 [pid 5059] getdents64(3, [pid 5441] <... close resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5056] getdents64(4, [pid 5441] symlink("/dev/binderfs", "./binderfs" [pid 5059] umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5441] <... symlink resumed>) = 0 [pid 5439] <... ioctl resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5441] memfd_create("syzkaller", 0 [pid 5056] getdents64(4, [pid 5441] <... memfd_create resumed>) = 3 [pid 5440] 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"..., 524288 [pid 5439] close(3 [pid 5056] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5441] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5439] <... close resumed>) = 0 [pid 5438] <... creat resumed>) = 5 [pid 5056] close(4 [pid 5441] <... mmap resumed>) = 0x7f138d200000 [pid 5439] close(4 [pid 5056] <... close resumed>) = 0 [pid 5438] exit_group(0 [pid 5439] <... close resumed>) = 0 [pid 5439] mkdir("./bus", 0777 [pid 5440] <... write resumed>) = 524288 [pid 5439] <... mkdir resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5056] rmdir("./60/bus" [pid 5439] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5438] <... exit_group resumed>) = ? [pid 5441] 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"..., 524288 [pid 5439] <... mount resumed>) = 0 [pid 5438] +++ exited with 0 +++ [pid 5059] umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5439] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5438, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5441] <... write resumed>) = 524288 [pid 5439] <... openat resumed>) = 3 [pid 5059] newfstatat(AT_FDCWD, "./62/bus", [pid 5056] <... rmdir resumed>) = 0 [pid 5060] umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5060] openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5060] newfstatat(3, "", [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5060] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5440] munmap(0x7f138d200000, 138412032 [pid 5060] getdents64(3, [pid 5056] umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5439] chdir("./bus" [pid 5060] <... getdents64 resumed>0x555556c086f0 /* 4 entries */, 32768) = 104 [pid 5059] umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5440] <... munmap resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./60/binderfs", [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5439] <... chdir resumed>) = 0 [pid 5060] umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "./62/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5440] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5439] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] <... openat resumed>) = 4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5440] <... openat resumed>) = 4 [pid 5439] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] newfstatat(4, "", [pid 5056] unlink("./60/binderfs" [pid 5440] ioctl(4, LOOP_SET_FD, 3 [pid 5439] symlink("./bus", "./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" [pid 5060] <... umount2 resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... unlink resumed>) = 0 [ 87.004154][ T5439] loop1: detected capacity change from 0 to 1024 [pid 5441] munmap(0x7f138d200000, 138412032 [pid 5059] getdents64(4, [pid 5056] getdents64(3, [pid 5441] <... munmap resumed>) = 0 [pid 5439] <... symlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 2 entries */, 32768) = 48 [pid 5056] <... getdents64 resumed>0x555556c086f0 /* 0 entries */, 32768) = 0 [pid 5441] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5439] creat("./file2aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000 [pid 5059] getdents64(4, [pid 5441] <... openat resumed>) = 4 [pid 5059] <... getdents64 resumed>0x555556c10730 /* 0 entries */, 32768) = 0 [pid 5441] ioctl(4, LOOP_SET_FD, 3