./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1349710011 <...> Warning: Permanently added '10.128.1.166' (ED25519) to the list of known hosts. execve("./syz-executor1349710011", ["./syz-executor1349710011"], 0x7ffc2c47af10 /* 10 vars */) = 0 brk(NULL) = 0x555560e9f000 brk(0x555560e9fd00) = 0x555560e9fd00 arch_prctl(ARCH_SET_FS, 0x555560e9f380) = 0 set_tid_address(0x555560e9f650) = 5085 set_robust_list(0x555560e9f660, 24) = 0 rseq(0x555560e9fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1349710011", 4096) = 28 getrandom("\x6c\xcd\x00\x5f\xd4\x41\x71\xcf", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555560e9fd00 brk(0x555560ec0d00) = 0x555560ec0d00 brk(0x555560ec1000) = 0x555560ec1000 mprotect(0x7fc405a45000, 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, child_tidptr=0x555560e9f650) = 5086 ./strace-static-x86_64: Process 5086 attached [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] set_robust_list(0x555560e9f660, 24) = 0 ./strace-static-x86_64: Process 5087 attached [pid 5085] <... clone resumed>, child_tidptr=0x555560e9f650) = 5087 [pid 5087] set_robust_list(0x555560e9f660, 24 [pid 5086] mkdir("./syzkaller.aslH7n", 0700 [pid 5087] <... set_robust_list resumed>) = 0 [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] mkdir("./syzkaller.fVCihn", 0700./strace-static-x86_64: Process 5088 attached [pid 5085] <... clone resumed>, child_tidptr=0x555560e9f650) = 5088 [pid 5087] <... mkdir resumed>) = 0 [pid 5086] <... mkdir resumed>) = 0 [pid 5088] set_robust_list(0x555560e9f660, 24 [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] <... set_robust_list resumed>) = 0 [pid 5088] mkdir("./syzkaller.VnGsOV", 0700 [pid 5087] chmod("./syzkaller.fVCihn", 0777 [pid 5086] chmod("./syzkaller.aslH7n", 0777 [pid 5087] <... chmod resumed>) = 0 ./strace-static-x86_64: Process 5089 attached [pid 5088] <... mkdir resumed>) = 0 [pid 5086] <... chmod resumed>) = 0 [pid 5085] <... clone resumed>, child_tidptr=0x555560e9f650) = 5089 [pid 5089] set_robust_list(0x555560e9f660, 24 [pid 5087] chdir("./syzkaller.fVCihn" [pid 5086] chdir("./syzkaller.aslH7n" [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5089] <... set_robust_list resumed>) = 0 [pid 5089] mkdir("./syzkaller.HVE5aW", 0700 [pid 5088] chmod("./syzkaller.VnGsOV", 0777 [pid 5087] <... chdir resumed>) = 0 [pid 5086] <... chdir resumed>) = 0 [pid 5088] <... chmod resumed>) = 0 ./strace-static-x86_64: Process 5090 attached [pid 5089] <... mkdir resumed>) = 0 [pid 5088] chdir("./syzkaller.VnGsOV" [pid 5087] mkdir("./0", 0777 [pid 5086] mkdir("./0", 0777 [pid 5085] <... clone resumed>, child_tidptr=0x555560e9f650) = 5090 [pid 5090] set_robust_list(0x555560e9f660, 24 [pid 5089] chmod("./syzkaller.HVE5aW", 0777 [pid 5088] <... chdir resumed>) = 0 [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] <... set_robust_list resumed>) = 0 [pid 5089] <... chmod resumed>) = 0 [pid 5086] <... mkdir resumed>) = 0 [pid 5088] mkdir("./0", 0777 [pid 5090] mkdir("./syzkaller.mAEbkr", 0700 [pid 5089] chdir("./syzkaller.HVE5aW" [pid 5088] <... mkdir resumed>) = 0 [pid 5087] <... mkdir resumed>) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 5091 attached [pid 5090] <... mkdir resumed>) = 0 [pid 5089] <... chdir resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5086] <... openat resumed>) = 3 [pid 5085] <... clone resumed>, child_tidptr=0x555560e9f650) = 5091 [pid 5091] set_robust_list(0x555560e9f660, 24 [pid 5089] mkdir("./0", 0777 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5087] <... openat resumed>) = 3 [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5091] <... set_robust_list resumed>) = 0 [pid 5090] chmod("./syzkaller.mAEbkr", 0777 [pid 5089] <... mkdir resumed>) = 0 [pid 5088] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5086] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5091] mkdir("./syzkaller.rljx9J", 0700 [pid 5090] <... chmod resumed>) = 0 [pid 5090] chdir("./syzkaller.mAEbkr" [pid 5091] <... mkdir resumed>) = 0 [pid 5090] <... chdir resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] close(3 [pid 5087] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5086] close(3 [pid 5091] chmod("./syzkaller.rljx9J", 0777 [pid 5090] mkdir("./0", 0777 [pid 5091] <... chmod resumed>) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5087] close(3 [pid 5086] <... close resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5091] chdir("./syzkaller.rljx9J" [pid 5087] <... close resumed>) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5089] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5089] close(3) = 0 ./strace-static-x86_64: Process 5093 attached ./strace-static-x86_64: Process 5092 attached [pid 5091] <... chdir resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5093] set_robust_list(0x555560e9f660, 24 [pid 5092] set_robust_list(0x555560e9f660, 24 [pid 5091] mkdir("./0", 0777 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5092 [pid 5091] <... mkdir resumed>) = 0 [pid 5090] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5092] <... set_robust_list resumed>) = 0 [pid 5093] <... set_robust_list resumed>) = 0 [pid 5092] chdir("./0" [pid 5093] chdir("./0" [pid 5090] close(3 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5093 [pid 5090] <... close resumed>) = 0 [pid 5093] <... chdir resumed>) = 0 [pid 5092] <... chdir resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5094 ./strace-static-x86_64: Process 5095 attached ./strace-static-x86_64: Process 5094 attached [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5095] set_robust_list(0x555560e9f660, 24 [pid 5094] set_robust_list(0x555560e9f660, 24 [pid 5093] <... prctl resumed>) = 0 [pid 5092] <... prctl resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5095 [pid 5095] <... set_robust_list resumed>) = 0 [pid 5094] <... set_robust_list resumed>) = 0 [pid 5093] setpgid(0, 0 [pid 5092] setpgid(0, 0 [pid 5095] chdir("./0" [pid 5093] <... setpgid resumed>) = 0 [pid 5092] <... setpgid resumed>) = 0 [pid 5094] chdir("./0" [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5096 attached [pid 5095] <... chdir resumed>) = 0 [pid 5094] <... chdir resumed>) = 0 [pid 5093] <... openat resumed>) = 3 [pid 5092] <... openat resumed>) = 3 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5096 [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5096] set_robust_list(0x555560e9f660, 24 [pid 5095] <... prctl resumed>) = 0 [pid 5094] <... prctl resumed>) = 0 [pid 5095] setpgid(0, 0 [pid 5094] setpgid(0, 0 [pid 5096] <... set_robust_list resumed>) = 0 [pid 5093] write(3, "1000", 4 [pid 5091] close(3 [pid 5093] <... write resumed>) = 4 [pid 5092] write(3, "1000", 4 [pid 5091] <... close resumed>) = 0 [pid 5094] <... setpgid resumed>) = 0 [pid 5093] close(3 [pid 5092] <... write resumed>) = 4 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5096] chdir("./0" [pid 5095] <... setpgid resumed>) = 0 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5093] <... close resumed>) = 0 [pid 5092] close(3 [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5093] symlink("/dev/binderfs", "./binderfs" [pid 5092] <... close resumed>) = 0 [pid 5096] <... chdir resumed>) = 0 [pid 5094] <... openat resumed>) = 3 [pid 5093] <... symlink resumed>) = 0 [pid 5092] symlink("/dev/binderfs", "./binderfs" [pid 5095] <... openat resumed>) = 3 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5094] write(3, "1000", 4 [pid 5096] <... prctl resumed>) = 0 [pid 5095] write(3, "1000", 4 [pid 5094] <... write resumed>) = 4 [pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5092] <... symlink resumed>) = 0 [pid 5096] setpgid(0, 0 [pid 5094] close(3 [pid 5095] <... write resumed>) = 4 [pid 5095] close(3 [pid 5094] <... close resumed>) = 0 [pid 5095] <... close resumed>) = 0 [pid 5094] symlink("/dev/binderfs", "./binderfs" [pid 5096] <... setpgid resumed>) = 0 [pid 5095] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 5097 attached [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5097 [pid 5097] set_robust_list(0x555560e9f660, 24 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5093] <... openat resumed>) = 3 [pid 5092] <... openat resumed>) = 3 [pid 5097] <... set_robust_list resumed>) = 0 [pid 5097] chdir("./0" [pid 5093] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5097] <... chdir resumed>) = 0 [pid 5093] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5092] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5096] <... openat resumed>) = 3 [pid 5095] <... symlink resumed>) = 0 [pid 5094] <... symlink resumed>) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5097] <... prctl resumed>) = 0 [pid 5096] write(3, "1000", 4 [pid 5095] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5097] setpgid(0, 0 [pid 5096] <... write resumed>) = 4 [pid 5095] <... openat resumed>) = 3 [pid 5094] <... openat resumed>) = 3 [pid 5093] memfd_create("syzkaller", 0 [pid 5097] <... setpgid resumed>) = 0 [pid 5096] close(3 [pid 5095] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5093] <... memfd_create resumed>) = 4 [pid 5092] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5096] <... close resumed>) = 0 [pid 5095] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5094] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5092] memfd_create("syzkaller", 0 [pid 5097] <... openat resumed>) = 3 [pid 5096] symlink("/dev/binderfs", "./binderfs" [pid 5095] memfd_create("syzkaller", 0 [pid 5094] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5093] <... mmap resumed>) = 0x7fc3fd400000 [pid 5092] <... memfd_create resumed>) = 4 [pid 5096] <... symlink resumed>) = 0 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5095] <... memfd_create resumed>) = 4 [pid 5094] memfd_create("syzkaller", 0 [pid 5092] <... mmap resumed>) = 0x7fc3fd400000 [pid 5097] write(3, "1000", 4 [pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5094] <... memfd_create resumed>) = 4 [pid 5097] <... write resumed>) = 4 [pid 5095] <... mmap resumed>) = 0x7fc3fd400000 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5092] 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 5097] close(3 [pid 5096] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5097] <... close resumed>) = 0 [pid 5096] <... openat resumed>) = 3 [pid 5097] symlink("/dev/binderfs", "./binderfs" [pid 5094] <... mmap resumed>) = 0x7fc3fd400000 [pid 5093] 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 5097] <... symlink resumed>) = 0 [pid 5096] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = -1 ENXIO (No such device or address) [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5095] 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 5094] 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 5092] <... write resumed>) = 524288 [pid 5096] memfd_create("syzkaller", 0 [pid 5097] <... openat resumed>) = 3 [pid 5097] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = -1 ENXIO (No such device or address) [pid 5097] memfd_create("syzkaller", 0) = 4 [pid 5096] <... memfd_create resumed>) = 4 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5093] <... write resumed>) = 524288 [pid 5097] <... mmap resumed>) = 0x7fc3fd400000 [pid 5093] munmap(0x7fc3fd400000, 138412032 [pid 5092] munmap(0x7fc3fd400000, 138412032 [pid 5096] <... mmap resumed>) = 0x7fc3fd400000 [pid 5093] <... munmap resumed>) = 0 [pid 5092] <... munmap resumed>) = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5092] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5097] 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 5093] <... openat resumed>) = 5 [pid 5092] <... openat resumed>) = 5 [pid 5093] ioctl(5, LOOP_SET_FD, 4 [pid 5092] ioctl(5, LOOP_SET_FD, 4 [pid 5097] <... write resumed>) = 524288 [pid 5096] 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 5094] <... write resumed>) = 524288 [pid 5095] <... write resumed>) = 524288 [pid 5095] munmap(0x7fc3fd400000, 138412032 [pid 5096] <... write resumed>) = 524288 [pid 5095] <... munmap resumed>) = 0 [pid 5094] munmap(0x7fc3fd400000, 138412032 [pid 5093] <... ioctl resumed>) = 0 [pid 5093] close(4) = 0 [pid 5093] close(5) = 0 [pid 5093] mkdir("./bus", 0777 [pid 5097] munmap(0x7fc3fd400000, 138412032 [pid 5094] <... munmap resumed>) = 0 [pid 5093] <... mkdir resumed>) = 0 [pid 5095] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5097] <... munmap resumed>) = 0 [pid 5096] munmap(0x7fc3fd400000, 138412032 [pid 5095] <... openat resumed>) = 5 [pid 5094] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5097] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5095] ioctl(5, LOOP_SET_FD, 4 [pid 5093] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5092] <... ioctl resumed>) = 0 [pid 5097] <... openat resumed>) = 5 [pid 5096] <... munmap resumed>) = 0 [pid 5095] <... ioctl resumed>) = 0 [pid 5094] <... openat resumed>) = 5 [pid 5092] close(4 [pid 5096] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5095] close(4 [pid 5097] ioctl(5, LOOP_SET_FD, 4 [pid 5094] ioctl(5, LOOP_SET_FD, 4 [pid 5092] <... close resumed>) = 0 [pid 5096] <... openat resumed>) = 5 [pid 5095] <... close resumed>) = 0 [ 108.980403][ T5093] loop0: detected capacity change from 0 to 1024 [ 108.989591][ T5092] loop2: detected capacity change from 0 to 1024 [ 109.016237][ T5095] loop3: detected capacity change from 0 to 1024 [pid 5095] close(5 [pid 5096] ioctl(5, LOOP_SET_FD, 4 [pid 5095] <... close resumed>) = 0 [pid 5092] close(5 [pid 5095] mkdir("./bus", 0777) = 0 [pid 5092] <... close resumed>) = 0 [pid 5095] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5092] mkdir("./bus", 0777 [pid 5096] <... ioctl resumed>) = 0 [pid 5097] <... ioctl resumed>) = 0 [pid 5094] <... ioctl resumed>) = 0 [pid 5092] <... mkdir resumed>) = 0 [pid 5097] close(4 [pid 5096] close(4 [pid 5094] close(4 [pid 5097] <... close resumed>) = 0 [pid 5096] <... close resumed>) = 0 [pid 5095] <... mount resumed>) = 0 [pid 5093] <... mount resumed>) = 0 [pid 5096] close(5 [pid 5095] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5094] <... close resumed>) = 0 [pid 5093] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5096] <... close resumed>) = 0 [pid 5094] close(5 [pid 5093] <... openat resumed>) = 4 [pid 5092] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5095] <... openat resumed>) = 4 [pid 5097] close(5 [pid 5096] mkdir("./bus", 0777 [pid 5094] <... close resumed>) = 0 [pid 5093] chdir("./bus" [pid 5095] chdir("./bus" [pid 5097] <... close resumed>) = 0 [pid 5096] <... mkdir resumed>) = 0 [pid 5097] mkdir("./bus", 0777 [pid 5096] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5095] <... chdir resumed>) = 0 [pid 5094] mkdir("./bus", 0777 [pid 5093] <... chdir resumed>) = 0 [pid 5095] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5094] <... mkdir resumed>) = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5092] <... mount resumed>) = 0 [pid 5095] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5093] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 109.033466][ T5094] loop1: detected capacity change from 0 to 1024 [ 109.039547][ T5096] loop4: detected capacity change from 0 to 1024 [ 109.041165][ T5097] loop5: detected capacity change from 0 to 1024 [pid 5092] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5097] <... mkdir resumed>) = 0 [pid 5095] exit_group(0 [pid 5094] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5093] exit_group(0 [pid 5092] <... openat resumed>) = 4 [pid 5095] <... exit_group resumed>) = ? [pid 5093] <... exit_group resumed>) = ? [pid 5092] chdir("./bus" [pid 5093] +++ exited with 0 +++ [pid 5092] <... chdir resumed>) = 0 [pid 5097] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5092] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5086] --- 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 5086] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5096] <... mount resumed>) = 0 [pid 5095] +++ exited with 0 +++ [pid 5092] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5096] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5092] exit_group(0 [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5096] <... openat resumed>) = 4 [pid 5092] <... exit_group resumed>) = ? [pid 5096] chdir("./bus" [pid 5086] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5096] <... chdir resumed>) = 0 [pid 5089] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5096] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5092] +++ exited with 0 +++ [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5096] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5097] <... mount resumed>) = 0 [pid 5096] exit_group(0 [pid 5094] <... mount resumed>) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5086] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5097] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5096] <... exit_group resumed>) = ? [pid 5094] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5089] newfstatat(3, "", [pid 5088] restart_syscall(<... resuming interrupted clone ...> [pid 5097] <... openat resumed>) = 4 [pid 5094] <... openat resumed>) = 4 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5097] chdir("./bus" [pid 5086] newfstatat(3, "", [pid 5097] <... chdir resumed>) = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5094] chdir("./bus" [pid 5089] getdents64(3, [pid 5088] <... restart_syscall resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5097] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5094] <... chdir resumed>) = 0 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5097] exit_group(0 [pid 5096] +++ exited with 0 +++ [pid 5094] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5089] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] getdents64(3, [pid 5097] <... exit_group resumed>) = ? [pid 5094] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5088] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5097] +++ exited with 0 +++ [pid 5094] exit_group(0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5094] <... exit_group resumed>) = ? [pid 5088] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... openat resumed>) = 3 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] newfstatat(3, "", [pid 5090] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5094] +++ exited with 0 +++ [pid 5091] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... openat resumed>) = 3 [pid 5088] getdents64(3, [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5091] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] newfstatat(3, "", [pid 5091] <... openat resumed>) = 3 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] newfstatat(3, "", [pid 5090] getdents64(3, [pid 5087] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] getdents64(3, [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5087] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... umount2 resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5090] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... openat resumed>) = 3 [pid 5087] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] getdents64(3, [pid 5089] <... umount2 resumed>) = 0 [pid 5088] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] newfstatat(AT_FDCWD, "./0/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5086] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... umount2 resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./0/bus", [pid 5086] getdents64(4, [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5086] getdents64(4, [pid 5089] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] <... umount2 resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5089] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... openat resumed>) = 4 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] close(4 [pid 5089] newfstatat(4, "", [pid 5088] newfstatat(AT_FDCWD, "./0/bus", [pid 5090] <... umount2 resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] <... close resumed>) = 0 [pid 5087] <... umount2 resumed>) = 0 [pid 5090] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] getdents64(4, [pid 5088] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./0/bus", [pid 5090] newfstatat(AT_FDCWD, "./0/bus", [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] getdents64(4, [pid 5088] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] rmdir("./0/bus" [pid 5091] newfstatat(AT_FDCWD, "./0/bus", [pid 5090] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5088] <... openat resumed>) = 4 [pid 5087] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... rmdir resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] close(4 [pid 5088] newfstatat(4, "", [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] <... close resumed>) = 0 [pid 5087] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... openat resumed>) = 4 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] newfstatat(4, "", [pid 5089] rmdir("./0/bus" [pid 5087] <... openat resumed>) = 4 [pid 5091] <... openat resumed>) = 4 [pid 5088] getdents64(4, [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] newfstatat(4, "", [pid 5089] <... rmdir resumed>) = 0 [pid 5087] newfstatat(4, "", [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] getdents64(4, [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] getdents64(4, [pid 5088] getdents64(4, [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5089] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] getdents64(4, [pid 5087] getdents64(4, [pid 5088] close(4 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] close(4 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... close resumed>) = 0 [pid 5089] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5088] <... close resumed>) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5086] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5090] rmdir("./0/bus" [pid 5088] rmdir("./0/bus" [pid 5087] getdents64(4, [pid 5091] getdents64(4, [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] <... rmdir resumed>) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] unlink("./0/binderfs" [pid 5091] close(4 [pid 5090] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5087] close(4 [pid 5086] <... unlink resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... close resumed>) = 0 [pid 5091] rmdir("./0/bus" [pid 5087] rmdir("./0/bus" [pid 5091] <... rmdir resumed>) = 0 [pid 5090] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5089] unlink("./0/binderfs" [pid 5088] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] getdents64(3, [pid 5091] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... unlink resumed>) = 0 [pid 5088] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] close(3 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5090] unlink("./0/binderfs" [pid 5089] getdents64(3, [pid 5088] unlink("./0/binderfs" [pid 5087] <... rmdir resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... unlink resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5091] unlink("./0/binderfs" [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] <... unlink resumed>) = 0 [pid 5087] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] close(3 [pid 5091] <... unlink resumed>) = 0 [pid 5090] getdents64(3, [pid 5089] <... close resumed>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] rmdir("./0" [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] rmdir("./0" [pid 5088] getdents64(3, [pid 5087] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5086] <... rmdir resumed>) = 0 [pid 5090] close(3 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5091] getdents64(3, [pid 5090] <... close resumed>) = 0 [pid 5088] close(3 [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5091] close(3) = 0 [pid 5090] rmdir("./0" [pid 5089] mkdir("./1", 0777 [pid 5088] <... close resumed>) = 0 [pid 5087] unlink("./0/binderfs" [pid 5091] rmdir("./0" [pid 5090] <... rmdir resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5088] rmdir("./0" [pid 5087] <... unlink resumed>) = 0 [pid 5090] mkdir("./1", 0777 [pid 5091] mkdir("./1", 0777 [pid 5088] <... rmdir resumed>) = 0 [pid 5087] getdents64(3, [pid 5091] <... mkdir resumed>) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5089] <... mkdir resumed>) = 0 [pid 5088] mkdir("./1", 0777 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] mkdir("./1", 0777 [pid 5087] close(3 [pid 5086] <... mkdir resumed>) = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... mkdir resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5089] <... openat resumed>) = 3 [pid 5087] rmdir("./0" [pid 5090] <... openat resumed>) = 3 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5087] <... rmdir resumed>) = 0 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5089] <... ioctl resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] mkdir("./1", 0777 [pid 5089] close(3 [pid 5090] <... ioctl resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5089] <... close resumed>) = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] close(3 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5087] <... mkdir resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5087] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5099 attached ./strace-static-x86_64: Process 5100 attached [pid 5099] set_robust_list(0x555560e9f660, 24 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5100 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5099 [pid 5100] set_robust_list(0x555560e9f660, 24 [pid 5099] <... set_robust_list resumed>) = 0 [pid 5100] <... set_robust_list resumed>) = 0 [pid 5099] chdir("./1") = 0 [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5100] chdir("./1" [pid 5099] setpgid(0, 0 [pid 5100] <... chdir resumed>) = 0 [pid 5099] <... setpgid resumed>) = 0 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5100] <... prctl resumed>) = 0 [pid 5099] <... openat resumed>) = 3 [pid 5100] setpgid(0, 0 [pid 5099] write(3, "1000", 4) = 4 [pid 5099] close(3) = 0 [pid 5099] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5100] <... setpgid resumed>) = 0 [pid 5099] <... openat resumed>) = 3 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5099] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5100] <... openat resumed>) = 3 [pid 5099] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5099] memfd_create("syzkaller", 0 [pid 5100] write(3, "1000", 4 [pid 5099] <... memfd_create resumed>) = 4 [pid 5100] <... write resumed>) = 4 [pid 5100] close(3 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5086] <... ioctl resumed>) = 0 [pid 5099] <... mmap resumed>) = 0x7fc3fd400000 [pid 5099] 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 5086] close(3 [pid 5087] <... ioctl resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5100] <... close resumed>) = 0 [pid 5088] <... ioctl resumed>) = 0 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5103 [ 109.351212][ T5101] I/O error, dev loop5, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 ./strace-static-x86_64: Process 5103 attached [pid 5100] symlink("/dev/binderfs", "./binderfs" [pid 5099] <... write resumed>) = 524288 [pid 5088] close(3 [pid 5087] close(3 [pid 5103] set_robust_list(0x555560e9f660, 24 [pid 5100] <... symlink resumed>) = 0 [pid 5091] <... ioctl resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5103] <... set_robust_list resumed>) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5099] munmap(0x7fc3fd400000, 138412032 [pid 5091] close(3 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5103] chdir("./1" [pid 5100] <... openat resumed>) = 3 [pid 5099] <... munmap resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5103] <... chdir resumed>) = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5099] <... openat resumed>) = 5 ./strace-static-x86_64: Process 5105 attached ./strace-static-x86_64: Process 5106 attached [pid 5103] <... prctl resumed>) = 0 [pid 5100] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5099] ioctl(5, LOOP_SET_FD, 4 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5106 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5105 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5107 [pid 5100] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5105] set_robust_list(0x555560e9f660, 24 [pid 5106] set_robust_list(0x555560e9f660, 24 [pid 5100] memfd_create("syzkaller", 0 [pid 5103] setpgid(0, 0) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5107 attached ) = 3 [pid 5107] set_robust_list(0x555560e9f660, 24) = 0 [pid 5107] chdir("./1" [pid 5103] write(3, "1000", 4) = 4 [pid 5103] close(3 [pid 5107] <... chdir resumed>) = 0 [pid 5103] <... close resumed>) = 0 [pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5103] symlink("/dev/binderfs", "./binderfs" [pid 5105] <... set_robust_list resumed>) = 0 [pid 5100] <... memfd_create resumed>) = 4 [pid 5106] <... set_robust_list resumed>) = 0 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5107] <... prctl resumed>) = 0 [pid 5106] chdir("./1" [pid 5103] <... symlink resumed>) = 0 [pid 5100] <... mmap resumed>) = 0x7fc3fd400000 [pid 5105] chdir("./1" [pid 5107] setpgid(0, 0 [pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5099] <... ioctl resumed>) = 0 [pid 5107] <... setpgid resumed>) = 0 [pid 5105] <... chdir resumed>) = 0 [pid 5106] <... chdir resumed>) = 0 [pid 5103] <... openat resumed>) = 3 [pid 5100] 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 5099] close(4 [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5105] <... prctl resumed>) = 0 [pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5105] setpgid(0, 0 [pid 5106] <... prctl resumed>) = 0 [pid 5103] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5099] <... close resumed>) = 0 [pid 5107] <... openat resumed>) = 3 [pid 5105] <... setpgid resumed>) = 0 [pid 5106] setpgid(0, 0 [pid 5103] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5099] close(5 [pid 5107] write(3, "1000", 4 [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5106] <... setpgid resumed>) = 0 [pid 5103] memfd_create("syzkaller", 0 [pid 5099] <... close resumed>) = 0 [pid 5107] <... write resumed>) = 4 [pid 5105] <... openat resumed>) = 3 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5103] <... memfd_create resumed>) = 4 [pid 5099] mkdir("./bus", 0777 [pid 5107] close(3 [pid 5105] write(3, "1000", 4 [pid 5106] <... openat resumed>) = 3 [pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5099] <... mkdir resumed>) = 0 [pid 5107] <... close resumed>) = 0 [ 109.447783][ T5099] loop3: detected capacity change from 0 to 1024 [pid 5105] <... write resumed>) = 4 [pid 5106] write(3, "1000", 4 [pid 5103] <... mmap resumed>) = 0x7fc3fd400000 [pid 5099] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5107] symlink("/dev/binderfs", "./binderfs" [pid 5105] close(3 [pid 5106] <... write resumed>) = 4 [pid 5103] 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 5107] <... symlink resumed>) = 0 [pid 5107] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5105] <... close resumed>) = 0 [pid 5106] close(3 [pid 5107] <... openat resumed>) = 3 [pid 5107] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5105] symlink("/dev/binderfs", "./binderfs" [pid 5106] <... close resumed>) = 0 [pid 5107] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5099] <... mount resumed>) = 0 [pid 5107] memfd_create("syzkaller", 0 [pid 5105] <... symlink resumed>) = 0 [pid 5106] symlink("/dev/binderfs", "./binderfs" [pid 5103] <... write resumed>) = 524288 [pid 5100] <... write resumed>) = 524288 [pid 5099] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5107] <... memfd_create resumed>) = 4 [pid 5106] <... symlink resumed>) = 0 [pid 5107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5099] <... openat resumed>) = 4 [pid 5099] chdir("./bus") = 0 [pid 5106] <... openat resumed>) = 3 [pid 5099] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5105] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5099] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5099] exit_group(0) = ? [pid 5099] +++ exited with 0 +++ [pid 5107] 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 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5106] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5105] <... openat resumed>) = 3 [pid 5106] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5100] munmap(0x7fc3fd400000, 138412032 [pid 5106] memfd_create("syzkaller", 0 [pid 5089] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5105] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5106] <... memfd_create resumed>) = 4 [pid 5100] <... munmap resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5106] <... mmap resumed>) = 0x7fc3fd400000 [pid 5089] <... openat resumed>) = 3 [pid 5103] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5106] 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 5105] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5089] newfstatat(3, "", [pid 5100] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5105] memfd_create("syzkaller", 0 [pid 5100] <... openat resumed>) = 5 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5105] <... memfd_create resumed>) = 4 [pid 5100] ioctl(5, LOOP_SET_FD, 4 [pid 5089] getdents64(3, [pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 5103] ioctl(5, LOOP_SET_FD, 4 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5107] <... write resumed>) = 524288 [pid 5105] <... mmap resumed>) = 0x7fc3fd400000 [pid 5089] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5107] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5107] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 5 [pid 5100] <... ioctl resumed>) = 0 [pid 5107] ioctl(5, LOOP_SET_FD, 4 [pid 5100] close(4) = 0 [pid 5100] close(5 [pid 5105] 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 5100] <... close resumed>) = 0 [pid 5100] mkdir("./bus", 0777) = 0 [pid 5100] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5106] <... write resumed>) = 524288 [pid 5089] <... umount2 resumed>) = 0 [pid 5103] <... ioctl resumed>) = 0 [pid 5103] close(4) = 0 [pid 5103] close(5) = 0 [pid 5103] mkdir("./bus", 0777) = 0 [pid 5103] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5107] <... ioctl resumed>) = 0 [pid 5107] close(4 [pid 5100] <... mount resumed>) = 0 [pid 5107] <... close resumed>) = 0 [ 109.575041][ T5100] loop4: detected capacity change from 0 to 1024 [ 109.578266][ T5103] loop0: detected capacity change from 0 to 1024 [ 109.602201][ T5107] loop2: detected capacity change from 0 to 1024 [pid 5100] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5107] close(5 [pid 5106] munmap(0x7fc3fd400000, 138412032 [pid 5100] <... openat resumed>) = 4 [pid 5089] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5107] <... close resumed>) = 0 [pid 5100] chdir("./bus" [pid 5107] mkdir("./bus", 0777 [pid 5100] <... chdir resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5107] <... mkdir resumed>) = 0 [pid 5105] <... write resumed>) = 524288 [pid 5106] <... munmap resumed>) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5089] newfstatat(AT_FDCWD, "./1/bus", [pid 5105] munmap(0x7fc3fd400000, 138412032 [pid 5106] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5103] <... mount resumed>) = 0 [pid 5100] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5105] <... munmap resumed>) = 0 [pid 5106] <... openat resumed>) = 5 [pid 5103] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5100] exit_group(0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5106] ioctl(5, LOOP_SET_FD, 4 [pid 5089] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5107] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5103] <... openat resumed>) = 4 [pid 5100] <... exit_group resumed>) = ? [pid 5105] <... openat resumed>) = 5 [pid 5103] chdir("./bus" [pid 5105] ioctl(5, LOOP_SET_FD, 4 [pid 5103] <... chdir resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5089] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5103] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5103] exit_group(0) = ? [pid 5103] +++ exited with 0 +++ [pid 5100] +++ exited with 0 +++ [pid 5089] <... openat resumed>) = 4 [pid 5105] <... ioctl resumed>) = 0 [pid 5106] <... ioctl resumed>) = 0 [pid 5089] newfstatat(4, "", [pid 5105] close(4 [pid 5106] close(4 [pid 5090] --- 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 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5105] <... close resumed>) = 0 [pid 5106] <... close resumed>) = 0 [pid 5090] restart_syscall(<... resuming interrupted clone ...> [pid 5106] close(5 [pid 5090] <... restart_syscall resumed>) = 0 [pid 5105] close(5 [pid 5106] <... close resumed>) = 0 [pid 5106] mkdir("./bus", 0777 [pid 5105] <... close resumed>) = 0 [pid 5106] <... mkdir resumed>) = 0 [pid 5086] restart_syscall(<... resuming interrupted clone ...> [pid 5089] getdents64(4, [pid 5105] mkdir("./bus", 0777 [pid 5106] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5090] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5086] <... restart_syscall resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [ 109.680235][ T5106] loop5: detected capacity change from 0 to 1024 [ 109.691953][ T5105] loop1: detected capacity change from 0 to 1024 [pid 5089] close(4 [pid 5105] <... mkdir resumed>) = 0 [pid 5089] <... close resumed>) = 0 [pid 5086] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] rmdir("./1/bus" [pid 5107] <... mount resumed>) = 0 [pid 5090] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5107] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5086] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5107] <... openat resumed>) = 4 [pid 5086] <... openat resumed>) = 3 [pid 5086] newfstatat(3, "", [pid 5090] <... openat resumed>) = 3 [pid 5105] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5090] newfstatat(3, "", [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5107] chdir("./bus" [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, [pid 5107] <... chdir resumed>) = 0 [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5107] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5090] getdents64(3, [pid 5089] <... rmdir resumed>) = 0 [pid 5086] <... umount2 resumed>) = 0 [pid 5107] exit_group(0 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5107] <... exit_group resumed>) = ? [pid 5090] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5107] +++ exited with 0 +++ [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5107, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5088] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5088] newfstatat(3, "", [pid 5089] unlink("./1/binderfs" [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5105] <... mount resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] newfstatat(AT_FDCWD, "./1/bus", [pid 5089] <... unlink resumed>) = 0 [pid 5088] getdents64(3, [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5105] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5106] <... mount resumed>) = 0 [pid 5086] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] getdents64(3, [pid 5086] <... openat resumed>) = 4 [pid 5086] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5086] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] close(4) = 0 [pid 5086] rmdir("./1/bus" [pid 5090] <... umount2 resumed>) = 0 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] <... rmdir resumed>) = 0 [pid 5105] <... openat resumed>) = 4 [pid 5090] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] close(3 [pid 5106] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... close resumed>) = 0 [pid 5086] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] unlink("./1/binderfs") = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] close(3) = 0 [pid 5086] rmdir("./1" [pid 5090] newfstatat(AT_FDCWD, "./1/bus", [pid 5089] rmdir("./1" [pid 5086] <... rmdir resumed>) = 0 [pid 5106] <... openat resumed>) = 4 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5106] chdir("./bus" [pid 5090] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5105] chdir("./bus" [pid 5089] mkdir("./2", 0777 [pid 5106] <... chdir resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] mkdir("./2", 0777 [pid 5105] <... chdir resumed>) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5090] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] <... mkdir resumed>) = 0 [pid 5086] <... mkdir resumed>) = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5106] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] <... openat resumed>) = 4 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5105] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5106] exit_group(0 [pid 5090] newfstatat(4, "", [pid 5089] <... openat resumed>) = 3 [pid 5105] exit_group(0 [pid 5106] <... exit_group resumed>) = ? [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5088] <... umount2 resumed>) = 0 [pid 5105] <... exit_group resumed>) = ? [pid 5090] getdents64(4, [pid 5105] +++ exited with 0 +++ [pid 5106] +++ exited with 0 +++ [pid 5089] <... ioctl resumed>) = 0 [pid 5088] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5089] close(3 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5086] <... openat resumed>) = 3 [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5090] getdents64(4, [pid 5089] <... close resumed>) = 0 [pid 5088] newfstatat(AT_FDCWD, "./1/bus", [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5091] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] close(4 [pid 5087] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... close resumed>) = 0 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5109 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] rmdir("./1/bus" [pid 5087] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5109 attached [pid 5091] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] <... rmdir resumed>) = 0 [pid 5088] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... openat resumed>) = 3 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(3, "", [pid 5091] <... openat resumed>) = 3 [pid 5088] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] getdents64(3, [pid 5088] <... openat resumed>) = 4 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5088] newfstatat(4, "", [pid 5087] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5109] set_robust_list(0x555560e9f660, 24 [pid 5091] newfstatat(3, "", [pid 5090] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5109] <... set_robust_list resumed>) = 0 [pid 5088] getdents64(4, [pid 5091] getdents64(3, [pid 5090] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] unlink("./1/binderfs" [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5090] <... unlink resumed>) = 0 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5109] chdir("./2" [pid 5091] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] getdents64(4, [pid 5090] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] close(3) = 0 [pid 5090] rmdir("./1" [pid 5109] <... chdir resumed>) = 0 [pid 5091] <... umount2 resumed>) = 0 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5088] close(4) = 0 [pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] rmdir("./1/bus" [pid 5090] <... rmdir resumed>) = 0 [pid 5109] <... prctl resumed>) = 0 [pid 5091] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... rmdir resumed>) = 0 [pid 5087] <... umount2 resumed>) = 0 [pid 5109] setpgid(0, 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] mkdir("./2", 0777) = 0 [pid 5087] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5109] <... setpgid resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./1/bus", [pid 5090] <... openat resumed>) = 3 [pid 5088] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... ioctl resumed>) = 0 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./1/bus", [pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... ioctl resumed>) = 0 [pid 5090] close(3 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... close resumed>) = 0 [pid 5087] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5109] <... openat resumed>) = 3 [pid 5091] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5087] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5087] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5087] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] unlink("./1/binderfs" [pid 5109] write(3, "1000", 4 [pid 5091] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] close(4) = 0 [pid 5087] rmdir("./1/bus" [pid 5109] <... write resumed>) = 4 [pid 5091] <... openat resumed>) = 4 [pid 5088] <... unlink resumed>) = 0 [pid 5087] <... rmdir resumed>) = 0 [pid 5087] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5109] close(3 [pid 5091] newfstatat(4, "", [pid 5088] getdents64(3, [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5109] <... close resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5109] symlink("/dev/binderfs", "./binderfs" [pid 5091] getdents64(4, [pid 5088] close(3./strace-static-x86_64: Process 5110 attached [pid 5109] <... symlink resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5110 [pid 5088] <... close resumed>) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] unlink("./1/binderfs" [pid 5091] getdents64(4, [pid 5088] rmdir("./1" [pid 5087] <... unlink resumed>) = 0 [pid 5109] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5109] <... openat resumed>) = 3 [pid 5091] close(4 [pid 5088] <... rmdir resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5086] close(3 [pid 5109] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] rmdir("./1/bus" [pid 5088] mkdir("./2", 0777 [pid 5110] set_robust_list(0x555560e9f660, 24 [pid 5087] getdents64(3, [pid 5086] <... close resumed>) = 0 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5109] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5091] <... rmdir resumed>) = 0 [pid 5088] <... mkdir resumed>) = 0 [pid 5110] <... set_robust_list resumed>) = 0 [pid 5091] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] close(3 [pid 5109] memfd_create("syzkaller", 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5110] chdir("./2" [pid 5091] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5088] <... openat resumed>) = 3 [pid 5087] <... close resumed>) = 0 [pid 5109] <... memfd_create resumed>) = 4 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5087] rmdir("./1" [pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] unlink("./1/binderfs" [pid 5087] <... rmdir resumed>) = 0 [pid 5110] <... chdir resumed>) = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5109] <... mmap resumed>) = 0x7fc3fd400000 [pid 5091] <... unlink resumed>) = 0 [pid 5087] mkdir("./2", 0777 [pid 5110] setpgid(0, 0 [pid 5087] <... mkdir resumed>) = 0 [pid 5110] <... setpgid resumed>) = 0 [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5110] <... openat resumed>) = 3 [pid 5091] getdents64(3, [pid 5087] <... openat resumed>) = 3 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5111 [pid 5087] ioctl(3, LOOP_CLR_FD) = 0 [pid 5087] close(3./strace-static-x86_64: Process 5111 attached [pid 5109] 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 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] <... close resumed>) = 0 [pid 5091] close(3 [pid 5111] set_robust_list(0x555560e9f660, 24 [pid 5110] write(3, "1000", 4 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5111] <... set_robust_list resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5111] chdir("./2" [pid 5110] <... write resumed>) = 4 [pid 5091] rmdir("./1" [pid 5111] <... chdir resumed>) = 0 [pid 5110] close(3) = 0 [pid 5110] symlink("/dev/binderfs", "./binderfs" [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5110] <... symlink resumed>) = 0 [pid 5111] <... prctl resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5112 [pid 5110] openat(AT_FDCWD, "/dev/loop0", O_RDONLY./strace-static-x86_64: Process 5112 attached [pid 5111] setpgid(0, 0 [pid 5110] <... openat resumed>) = 3 [pid 5091] mkdir("./2", 0777 [pid 5112] set_robust_list(0x555560e9f660, 24) = 0 [pid 5112] chdir("./2" [pid 5110] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5112] <... chdir resumed>) = 0 [pid 5110] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5111] <... setpgid resumed>) = 0 [pid 5110] memfd_create("syzkaller", 0 [pid 5088] <... ioctl resumed>) = 0 [pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... mkdir resumed>) = 0 [pid 5112] <... prctl resumed>) = 0 [pid 5110] <... memfd_create resumed>) = 4 [pid 5109] <... write resumed>) = 524288 [pid 5112] setpgid(0, 0) = 0 [pid 5110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5111] <... openat resumed>) = 3 [pid 5111] write(3, "1000", 4 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5110] <... mmap resumed>) = 0x7fc3fd400000 [pid 5112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5110] 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 5112] <... openat resumed>) = 3 [pid 5111] <... write resumed>) = 4 [pid 5091] <... openat resumed>) = 3 [pid 5112] write(3, "1000", 4) = 4 [pid 5111] close(3 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5112] close(3 [pid 5088] close(3 [pid 5112] <... close resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5112] symlink("/dev/binderfs", "./binderfs" [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5111] <... close resumed>) = 0 [pid 5109] munmap(0x7fc3fd400000, 138412032 [pid 5091] <... ioctl resumed>) = 0 [pid 5112] <... symlink resumed>) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5111] symlink("/dev/binderfs", "./binderfs" [pid 5109] <... munmap resumed>) = 0 [pid 5091] close(3 [pid 5111] <... symlink resumed>) = 0 [pid 5109] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] <... close resumed>) = 0 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5111] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5110] <... write resumed>) = 524288 [pid 5109] <... openat resumed>) = 5 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5113 [pid 5112] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5113 attached [pid 5112] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5113] set_robust_list(0x555560e9f660, 24 [pid 5112] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5113] <... set_robust_list resumed>) = 0 [pid 5112] memfd_create("syzkaller", 0 [pid 5113] chdir("./2" [pid 5112] <... memfd_create resumed>) = 4 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 ./strace-static-x86_64: Process 5114 attached [pid 5113] <... chdir resumed>) = 0 [pid 5112] 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 5111] <... openat resumed>) = 3 [pid 5109] ioctl(5, LOOP_SET_FD, 4 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5114 [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5113] setpgid(0, 0) = 0 [pid 5114] set_robust_list(0x555560e9f660, 24 [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5111] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5109] <... ioctl resumed>) = 0 [pid 5113] <... openat resumed>) = 3 [pid 5113] write(3, "1000", 4) = 4 [pid 5113] close(3 [pid 5114] <... set_robust_list resumed>) = 0 [pid 5113] <... close resumed>) = 0 [pid 5111] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5110] munmap(0x7fc3fd400000, 138412032 [pid 5113] symlink("/dev/binderfs", "./binderfs" [pid 5110] <... munmap resumed>) = 0 [pid 5113] <... symlink resumed>) = 0 [pid 5113] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5113] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = -1 ENXIO (No such device or address) [pid 5113] memfd_create("syzkaller", 0 [pid 5114] chdir("./2" [pid 5113] <... memfd_create resumed>) = 4 [pid 5114] <... chdir resumed>) = 0 [pid 5113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5111] memfd_create("syzkaller", 0 [pid 5110] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5113] <... mmap resumed>) = 0x7fc3fd400000 [ 110.125462][ T5109] loop3: detected capacity change from 0 to 1024 [pid 5114] <... prctl resumed>) = 0 [pid 5111] <... memfd_create resumed>) = 4 [pid 5110] <... openat resumed>) = 5 [pid 5109] close(4 [pid 5114] setpgid(0, 0 [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5110] ioctl(5, LOOP_SET_FD, 4 [pid 5109] <... close resumed>) = 0 [pid 5114] <... setpgid resumed>) = 0 [pid 5111] <... mmap resumed>) = 0x7fc3fd400000 [pid 5110] <... ioctl resumed>) = 0 [pid 5109] close(5) = 0 [pid 5113] 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 5112] <... write resumed>) = 524288 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5111] 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 5109] mkdir("./bus", 0777 [pid 5114] <... openat resumed>) = 3 [pid 5112] munmap(0x7fc3fd400000, 138412032 [pid 5109] <... mkdir resumed>) = 0 [pid 5112] <... munmap resumed>) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5110] close(4 [pid 5112] <... openat resumed>) = 5 [pid 5110] <... close resumed>) = 0 [pid 5112] ioctl(5, LOOP_SET_FD, 4 [pid 5110] close(5 [pid 5114] write(3, "1000", 4 [pid 5109] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5114] <... write resumed>) = 4 [pid 5113] <... write resumed>) = 524288 [pid 5110] <... close resumed>) = 0 [pid 5114] close(3) = 0 [pid 5110] mkdir("./bus", 0777 [pid 5114] symlink("/dev/binderfs", "./binderfs" [pid 5110] <... mkdir resumed>) = 0 [pid 5113] munmap(0x7fc3fd400000, 138412032 [pid 5114] <... symlink resumed>) = 0 [pid 5113] <... munmap resumed>) = 0 [ 110.165755][ T5110] loop4: detected capacity change from 0 to 1024 [ 110.200444][ T5112] loop1: detected capacity change from 0 to 1024 [pid 5113] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5110] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5113] <... openat resumed>) = 5 [pid 5111] <... write resumed>) = 524288 [pid 5114] <... openat resumed>) = 3 [pid 5111] munmap(0x7fc3fd400000, 138412032 [pid 5109] <... mount resumed>) = 0 [pid 5114] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5113] ioctl(5, LOOP_SET_FD, 4 [pid 5111] <... munmap resumed>) = 0 [pid 5109] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5114] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5113] <... ioctl resumed>) = 0 [pid 5112] <... ioctl resumed>) = 0 [pid 5109] <... openat resumed>) = 4 [pid 5114] memfd_create("syzkaller", 0 [pid 5109] chdir("./bus") = 0 [pid 5109] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5114] <... memfd_create resumed>) = 4 [pid 5111] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5109] exit_group(0 [pid 5112] close(4) = 0 [pid 5111] <... openat resumed>) = 5 [pid 5112] close(5) = 0 [ 110.237385][ T5113] loop2: detected capacity change from 0 to 1024 [pid 5112] mkdir("./bus", 0777 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5112] <... mkdir resumed>) = 0 [pid 5109] <... exit_group resumed>) = ? [pid 5114] <... mmap resumed>) = 0x7fc3fd400000 [pid 5109] +++ exited with 0 +++ [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5109, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5089] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5089] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5089] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5113] close(4 [pid 5112] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5089] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5111] ioctl(5, LOOP_SET_FD, 4 [pid 5113] <... close resumed>) = 0 [pid 5113] close(5 [pid 5089] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5113] <... close resumed>) = 0 [pid 5113] mkdir("./bus", 0777) = 0 [pid 5114] 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 5113] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5110] <... mount resumed>) = 0 [pid 5110] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5111] <... ioctl resumed>) = 0 [pid 5089] <... umount2 resumed>) = 0 [pid 5110] chdir("./bus" [pid 5111] close(4 [pid 5112] <... mount resumed>) = 0 [pid 5111] <... close resumed>) = 0 [pid 5112] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5111] close(5 [pid 5112] <... openat resumed>) = 4 [pid 5111] <... close resumed>) = 0 [pid 5110] <... chdir resumed>) = 0 [pid 5112] chdir("./bus" [pid 5110] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5089] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5112] <... chdir resumed>) = 0 [pid 5111] mkdir("./bus", 0777 [pid 5110] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5112] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5110] exit_group(0 [pid 5089] newfstatat(AT_FDCWD, "./2/bus", [pid 5114] <... write resumed>) = 524288 [pid 5112] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5111] <... mkdir resumed>) = 0 [pid 5110] <... exit_group resumed>) = ? [ 110.278515][ T5111] loop0: detected capacity change from 0 to 1024 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5114] munmap(0x7fc3fd400000, 138412032 [pid 5113] <... mount resumed>) = 0 [pid 5112] exit_group(0 [pid 5111] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5110] +++ exited with 0 +++ [pid 5113] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5112] <... exit_group resumed>) = ? [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5114] <... munmap resumed>) = 0 [pid 5113] <... openat resumed>) = 4 [pid 5112] +++ exited with 0 +++ [pid 5111] <... mount resumed>) = 0 [pid 5090] restart_syscall(<... resuming interrupted clone ...> [pid 5089] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5113] chdir("./bus" [pid 5090] <... restart_syscall resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5114] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5111] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5113] <... chdir resumed>) = 0 [pid 5113] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5111] <... openat resumed>) = 4 [pid 5090] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5111] chdir("./bus" [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5111] <... chdir resumed>) = 0 [pid 5114] <... openat resumed>) = 5 [pid 5113] exit_group(0 [pid 5111] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5090] <... openat resumed>) = 3 [pid 5089] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5114] ioctl(5, LOOP_SET_FD, 4 [pid 5113] <... exit_group resumed>) = ? [pid 5111] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] newfstatat(3, "", [pid 5089] <... openat resumed>) = 4 [pid 5111] exit_group(0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] newfstatat(4, "", [pid 5087] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5111] <... exit_group resumed>) = ? [pid 5090] getdents64(3, [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] getdents64(4, [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5087] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] getdents64(4, [pid 5087] <... openat resumed>) = 3 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5113] +++ exited with 0 +++ [pid 5089] close(4 [pid 5111] +++ exited with 0 +++ [pid 5090] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... close resumed>) = 0 [pid 5088] --- 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 5087] newfstatat(3, "", [pid 5089] rmdir("./2/bus" [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5087] getdents64(3, [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5089] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5086] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5089] unlink("./2/binderfs" [pid 5088] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] newfstatat(3, "", [pid 5089] <... unlink resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] getdents64(3, [pid 5090] <... umount2 resumed>) = 0 [pid 5089] getdents64(3, [pid 5088] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5090] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5086] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5114] <... ioctl resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] close(3 [pid 5088] newfstatat(3, "", [pid 5114] close(4 [pid 5090] newfstatat(AT_FDCWD, "./2/bus", [pid 5089] <... close resumed>) = 0 [pid 5086] <... umount2 resumed>) = 0 [pid 5114] <... close resumed>) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] rmdir("./2" [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... umount2 resumed>) = 0 [pid 5090] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... rmdir resumed>) = 0 [pid 5088] getdents64(3, [pid 5086] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 110.388625][ T5114] loop5: detected capacity change from 0 to 1024 [pid 5089] mkdir("./3", 0777 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5114] close(5 [pid 5090] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] <... mkdir resumed>) = 0 [pid 5088] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] newfstatat(AT_FDCWD, "./2/bus", [pid 5114] <... close resumed>) = 0 [pid 5090] <... openat resumed>) = 4 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5114] mkdir("./bus", 0777 [pid 5088] <... umount2 resumed>) = 0 [pid 5090] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] close(4) = 0 [pid 5086] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5114] <... mkdir resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] rmdir("./2/bus" [pid 5086] <... openat resumed>) = 4 [pid 5090] <... rmdir resumed>) = 0 [pid 5088] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] newfstatat(4, "", [pid 5114] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5089] <... openat resumed>) = 3 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./2/bus", [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] getdents64(4, [pid 5090] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] newfstatat(AT_FDCWD, "./2/bus", [pid 5087] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] getdents64(4, [pid 5090] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5089] <... ioctl resumed>) = 0 [pid 5088] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] close(3 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... openat resumed>) = 4 [pid 5086] close(4 [pid 5090] unlink("./2/binderfs" [pid 5089] <... close resumed>) = 0 [pid 5088] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] newfstatat(4, "", [pid 5086] <... close resumed>) = 0 [pid 5090] <... unlink resumed>) = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] <... openat resumed>) = 4 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] rmdir("./2/bus" [pid 5088] newfstatat(4, "", [pid 5087] getdents64(4, [pid 5086] <... rmdir resumed>) = 0 [pid 5090] getdents64(3, [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5115 [pid 5088] getdents64(4, [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] close(3 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... close resumed>) = 0 [pid 5088] getdents64(4, [pid 5087] getdents64(4, [pid 5090] rmdir("./2"./strace-static-x86_64: Process 5115 attached ) = 0 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5115] set_robust_list(0x555560e9f660, 24 [pid 5088] close(4 [pid 5087] close(4 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5115] <... set_robust_list resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5086] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5115] chdir("./3" [pid 5090] mkdir("./3", 0777 [pid 5088] <... close resumed>) = 0 [pid 5087] rmdir("./2/bus" [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5088] rmdir("./2/bus" [pid 5087] <... rmdir resumed>) = 0 [pid 5086] unlink("./2/binderfs" [pid 5088] <... rmdir resumed>) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5086] getdents64(3, [pid 5115] <... chdir resumed>) = 0 [pid 5087] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5115] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] close(3 [pid 5115] <... prctl resumed>) = 0 [pid 5088] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5086] <... close resumed>) = 0 [pid 5115] setpgid(0, 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] rmdir("./2" [pid 5090] <... openat resumed>) = 3 [pid 5088] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5087] unlink("./2/binderfs" [pid 5086] <... rmdir resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... unlink resumed>) = 0 [pid 5115] <... setpgid resumed>) = 0 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5088] unlink("./2/binderfs" [pid 5087] getdents64(3, [pid 5086] mkdir("./3", 0777 [pid 5090] <... ioctl resumed>) = 0 [pid 5088] <... unlink resumed>) = 0 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] close(3 [pid 5087] close(3 [pid 5086] <... mkdir resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] <... close resumed>) = 0 [pid 5114] <... mount resumed>) = 0 [pid 5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5088] getdents64(3, [pid 5087] rmdir("./2" [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5114] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] <... rmdir resumed>) = 0 [pid 5114] <... openat resumed>) = 4 [pid 5088] close(3 [pid 5086] <... openat resumed>) = 3 [pid 5115] <... openat resumed>) = 3 [pid 5114] chdir("./bus" [pid 5088] <... close resumed>) = 0 [pid 5086] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5116 attached [pid 5115] write(3, "1000", 4 [pid 5088] rmdir("./2" [pid 5087] mkdir("./3", 0777 [pid 5086] <... ioctl resumed>) = 0 [pid 5116] set_robust_list(0x555560e9f660, 24 [pid 5114] <... chdir resumed>) = 0 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5116 [pid 5088] <... rmdir resumed>) = 0 [pid 5086] close(3 [pid 5116] <... set_robust_list resumed>) = 0 [pid 5115] <... write resumed>) = 4 [pid 5087] <... mkdir resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5116] chdir("./3" [pid 5115] close(3 [pid 5114] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5088] mkdir("./3", 0777 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5114] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5115] <... close resumed>) = 0 [pid 5114] exit_group(0 [pid 5088] <... mkdir resumed>) = 0 [pid 5116] <... chdir resumed>) = 0 [pid 5115] symlink("/dev/binderfs", "./binderfs" [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5115] <... symlink resumed>) = 0 [pid 5116] <... prctl resumed>) = 0 [pid 5114] <... exit_group resumed>) = ? [pid 5116] setpgid(0, 0) = 0 [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5116] <... openat resumed>) = 3 [pid 5115] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5114] +++ exited with 0 +++ [pid 5088] <... openat resumed>) = 3 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5117 [pid 5116] write(3, "1000", 4) = 4 [pid 5116] close(3) = 0 ./strace-static-x86_64: Process 5117 attached [pid 5116] symlink("/dev/binderfs", "./binderfs" [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5117] set_robust_list(0x555560e9f660, 24 [pid 5116] <... symlink resumed>) = 0 [pid 5115] <... openat resumed>) = 3 [pid 5117] <... set_robust_list resumed>) = 0 [pid 5117] chdir("./3") = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5115] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5116] <... openat resumed>) = 3 [pid 5116] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5117] <... prctl resumed>) = 0 [pid 5117] setpgid(0, 0) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5117] write(3, "1000", 4) = 4 [pid 5117] close(3) = 0 [pid 5117] symlink("/dev/binderfs", "./binderfs" [pid 5091] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5117] <... symlink resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5117] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] newfstatat(3, "", [pid 5087] <... openat resumed>) = 3 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] getdents64(3, [pid 5117] <... openat resumed>) = 3 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5117] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5091] <... umount2 resumed>) = 0 [pid 5091] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5091] newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5091] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5091] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5091] getdents64(4, [pid 5088] <... ioctl resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5115] <... ioctl resumed>) = 0 [pid 5091] close(4 [pid 5116] <... ioctl resumed>) = 0 [pid 5115] memfd_create("syzkaller", 0 [pid 5091] <... close resumed>) = 0 [pid 5116] memfd_create("syzkaller", 0 [pid 5115] <... memfd_create resumed>) = 4 [pid 5091] rmdir("./2/bus" [pid 5117] <... ioctl resumed>) = 0 [pid 5117] memfd_create("syzkaller", 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5091] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5117] <... memfd_create resumed>) = 4 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5117] <... mmap resumed>) = 0x7fc3fd400000 [pid 5116] <... memfd_create resumed>) = 4 [pid 5115] <... mmap resumed>) = 0x7fc3fd400000 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5117] 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 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] unlink("./2/binderfs" [pid 5116] <... mmap resumed>) = 0x7fc3fd400000 [pid 5116] 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 5091] <... unlink resumed>) = 0 [pid 5091] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] <... ioctl resumed>) = 0 [pid 5115] 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 5091] close(3) = 0 [pid 5091] rmdir("./2") = 0 [pid 5088] close(3 [pid 5091] mkdir("./3", 0777 [pid 5088] <... close resumed>) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] close(3) = 0 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5116] <... write resumed>) = 524288 [pid 5091] <... mkdir resumed>) = 0 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5119 ./strace-static-x86_64: Process 5119 attached [pid 5119] set_robust_list(0x555560e9f660, 24 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5119] <... set_robust_list resumed>) = 0 [pid 5115] <... write resumed>) = 524288 [pid 5091] <... openat resumed>) = 3 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5118 ./strace-static-x86_64: Process 5118 attached [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5119] chdir("./3" [pid 5118] set_robust_list(0x555560e9f660, 24 [pid 5119] <... chdir resumed>) = 0 [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5118] <... set_robust_list resumed>) = 0 [pid 5119] <... prctl resumed>) = 0 [pid 5119] setpgid(0, 0) = 0 [pid 5118] chdir("./3" [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5118] <... chdir resumed>) = 0 [pid 5119] <... openat resumed>) = 3 [pid 5117] <... write resumed>) = 524288 [pid 5115] munmap(0x7fc3fd400000, 138412032 [pid 5118] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5119] write(3, "1000", 4 [pid 5117] munmap(0x7fc3fd400000, 138412032 [pid 5116] munmap(0x7fc3fd400000, 138412032 [pid 5115] <... munmap resumed>) = 0 [pid 5118] <... prctl resumed>) = 0 [pid 5119] <... write resumed>) = 4 [pid 5117] <... munmap resumed>) = 0 [pid 5118] setpgid(0, 0 [pid 5116] <... munmap resumed>) = 0 [pid 5119] close(3 [pid 5118] <... setpgid resumed>) = 0 [pid 5119] <... close resumed>) = 0 [pid 5117] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5119] symlink("/dev/binderfs", "./binderfs" [pid 5117] <... openat resumed>) = 5 [pid 5118] <... openat resumed>) = 3 [pid 5119] <... symlink resumed>) = 0 [pid 5118] write(3, "1000", 4 [pid 5116] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5115] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5118] <... write resumed>) = 4 [pid 5119] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5117] ioctl(5, LOOP_SET_FD, 4 [pid 5115] <... openat resumed>) = 5 [pid 5118] close(3 [pid 5119] <... openat resumed>) = 3 [pid 5116] <... openat resumed>) = 5 [pid 5119] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5115] ioctl(5, LOOP_SET_FD, 4 [pid 5118] <... close resumed>) = 0 [pid 5118] symlink("/dev/binderfs", "./binderfs" [pid 5116] ioctl(5, LOOP_SET_FD, 4 [pid 5118] <... symlink resumed>) = 0 [pid 5119] memfd_create("syzkaller", 0 [pid 5117] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] ioctl(5, LOOP_CLR_FD) = 0 [pid 5119] <... memfd_create resumed>) = 4 [pid 5091] <... ioctl resumed>) = 0 [pid 5118] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5119] 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 5118] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5117] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 5117] close(5 [pid 5118] <... ioctl resumed>) = 0 [pid 5117] <... close resumed>) = 0 [pid 5118] memfd_create("syzkaller", 0 [pid 5117] close(4 [pid 5118] <... memfd_create resumed>) = 4 [pid 5117] <... close resumed>) = 0 [pid 5116] <... ioctl resumed>) = 0 [pid 5091] close(3 [pid 5118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5119] <... write resumed>) = 524288 [pid 5091] <... close resumed>) = 0 [pid 5118] <... mmap resumed>) = 0x7fc3fd400000 [pid 5119] munmap(0x7fc3fd400000, 138412032 [pid 5117] exit_group(0 [pid 5116] close(4 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5115] <... ioctl resumed>) = 0 [pid 5115] close(4) = 0 [pid 5115] close(5) = 0 [pid 5115] mkdir("./bus", 0777) = 0 [pid 5115] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5118] 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 5119] <... munmap resumed>) = 0 [pid 5117] <... exit_group resumed>) = ? [pid 5116] <... close resumed>) = 0 [ 110.784765][ T5116] loop4: detected capacity change from 0 to 1024 [ 110.822334][ T5115] loop3: detected capacity change from 0 to 1024 ./strace-static-x86_64: Process 5120 attached [pid 5116] close(5 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5120 [pid 5117] +++ exited with 0 +++ [pid 5119] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5119] <... openat resumed>) = 5 [pid 5116] <... close resumed>) = 0 [pid 5086] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5086] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5120] set_robust_list(0x555560e9f660, 24 [pid 5086] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5120] <... set_robust_list resumed>) = 0 [pid 5119] ioctl(5, LOOP_SET_FD, 4 [pid 5116] mkdir("./bus", 0777 [pid 5086] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5120] chdir("./3" [pid 5115] <... mount resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5115] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5086] unlink("./3/binderfs" [pid 5115] chdir("./bus") = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5120] <... chdir resumed>) = 0 [pid 5115] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5086] getdents64(3, [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5115] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5120] <... prctl resumed>) = 0 [pid 5115] exit_group(0 [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5120] setpgid(0, 0) = 0 [pid 5086] close(3 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5119] <... ioctl resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5120] <... openat resumed>) = 3 [pid 5115] <... exit_group resumed>) = ? [pid 5120] write(3, "1000", 4 [pid 5116] <... mkdir resumed>) = 0 [pid 5115] +++ exited with 0 +++ [pid 5086] rmdir("./3" [pid 5120] <... write resumed>) = 4 [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5115, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5120] close(3 [pid 5116] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5086] <... rmdir resumed>) = 0 [pid 5120] <... close resumed>) = 0 [pid 5120] symlink("/dev/binderfs", "./binderfs" [pid 5089] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5120] <... symlink resumed>) = 0 [pid 5118] <... write resumed>) = 524288 [pid 5119] close(4 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5119] <... close resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] mkdir("./4", 0777 [pid 5120] <... openat resumed>) = 3 [pid 5089] <... openat resumed>) = 3 [pid 5086] <... mkdir resumed>) = 0 [pid 5120] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5118] munmap(0x7fc3fd400000, 138412032 [pid 5089] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5120] <... ioctl resumed>) = 0 [pid 5089] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5120] memfd_create("syzkaller", 0 [pid 5118] <... munmap resumed>) = 0 [pid 5119] close(5 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5119] <... close resumed>) = 0 [pid 5120] <... memfd_create resumed>) = 4 [pid 5119] mkdir("./bus", 0777 [pid 5086] <... openat resumed>) = 3 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5118] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5120] <... mmap resumed>) = 0x7fc3fd400000 [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5119] <... mkdir resumed>) = 0 [pid 5118] <... openat resumed>) = 5 [pid 5086] <... ioctl resumed>) = 0 [ 110.877259][ T5119] loop1: detected capacity change from 0 to 1024 [pid 5118] ioctl(5, LOOP_SET_FD, 4 [pid 5089] <... umount2 resumed>) = 0 [pid 5086] close(3) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5119] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5089] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5120] 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 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./3/bus", [pid 5120] <... write resumed>) = 524288 [pid 5116] <... mount resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5121 [pid 5116] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5089] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5121 attached [pid 5116] <... openat resumed>) = 4 [pid 5089] <... openat resumed>) = 4 [pid 5089] newfstatat(4, "", [pid 5121] set_robust_list(0x555560e9f660, 24 [pid 5116] chdir("./bus" [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5089] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5089] close(4) = 0 [pid 5121] <... set_robust_list resumed>) = 0 [pid 5116] <... chdir resumed>) = 0 [pid 5089] rmdir("./3/bus" [pid 5121] chdir("./4" [pid 5119] <... mount resumed>) = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5121] <... chdir resumed>) = 0 [pid 5119] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5089] <... rmdir resumed>) = 0 [pid 5116] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5121] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5119] <... openat resumed>) = 4 [pid 5121] <... prctl resumed>) = 0 [pid 5119] chdir("./bus" [pid 5116] exit_group(0 [pid 5121] setpgid(0, 0 [pid 5119] <... chdir resumed>) = 0 [pid 5116] <... exit_group resumed>) = ? [pid 5121] <... setpgid resumed>) = 0 [pid 5118] <... ioctl resumed>) = 0 [pid 5119] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5121] <... openat resumed>) = 3 [pid 5118] close(4 [pid 5119] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5121] write(3, "1000", 4 [pid 5120] munmap(0x7fc3fd400000, 138412032 [pid 5118] <... close resumed>) = 0 [pid 5089] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5121] <... write resumed>) = 4 [pid 5119] exit_group(0 [pid 5121] close(3) = 0 [ 110.928100][ T5118] loop2: detected capacity change from 0 to 1024 [pid 5121] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5120] <... munmap resumed>) = 0 [pid 5119] <... exit_group resumed>) = ? [pid 5116] +++ exited with 0 +++ [pid 5089] unlink("./3/binderfs") = 0 [pid 5089] getdents64(3, [pid 5121] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5121] <... openat resumed>) = 3 [pid 5090] restart_syscall(<... resuming interrupted clone ...> [pid 5089] close(3 [pid 5119] +++ exited with 0 +++ [pid 5090] <... restart_syscall resumed>) = 0 [pid 5089] <... close resumed>) = 0 [pid 5089] rmdir("./3" [pid 5118] close(5 [pid 5089] <... rmdir resumed>) = 0 [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5121] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5118] <... close resumed>) = 0 [pid 5090] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5121] memfd_create("syzkaller", 0 [pid 5120] <... openat resumed>) = 5 [pid 5118] mkdir("./bus", 0777 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] mkdir("./4", 0777 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5121] <... memfd_create resumed>) = 4 [pid 5120] ioctl(5, LOOP_SET_FD, 4 [pid 5090] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] <... mkdir resumed>) = 0 [pid 5087] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5118] <... mkdir resumed>) = 0 [pid 5087] <... openat resumed>) = 3 [pid 5121] <... mmap resumed>) = 0x7fc3fd400000 [pid 5087] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5121] 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 5118] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5087] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5090] newfstatat(3, "", [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5087] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5090] getdents64(3, [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] <... ioctl resumed>) = 0 [pid 5090] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] close(3) = 0 [pid 5121] <... write resumed>) = 524288 [pid 5090] <... umount2 resumed>) = 0 [pid 5087] <... umount2 resumed>) = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5122 [pid 5087] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5122 attached [pid 5122] set_robust_list(0x555560e9f660, 24) = 0 [pid 5122] chdir("./4" [pid 5118] <... mount resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5122] <... chdir resumed>) = 0 [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5122] setpgid(0, 0 [pid 5121] munmap(0x7fc3fd400000, 138412032 [pid 5122] <... setpgid resumed>) = 0 [pid 5121] <... munmap resumed>) = 0 [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] newfstatat(AT_FDCWD, "./3/bus", [pid 5118] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5087] newfstatat(AT_FDCWD, "./3/bus", [pid 5122] <... openat resumed>) = 3 [pid 5121] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5118] <... openat resumed>) = 4 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5122] write(3, "1000", 4 [pid 5121] <... openat resumed>) = 5 [pid 5120] <... ioctl resumed>) = 0 [pid 5118] chdir("./bus" [pid 5090] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5122] <... write resumed>) = 4 [pid 5120] close(4 [pid 5118] <... chdir resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5122] close(3 [pid 5120] <... close resumed>) = 0 [pid 5122] <... close resumed>) = 0 [pid 5121] ioctl(5, LOOP_SET_FD, 4 [pid 5120] close(5 [pid 5122] symlink("/dev/binderfs", "./binderfs" [pid 5121] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5120] <... close resumed>) = 0 [pid 5090] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5122] <... symlink resumed>) = 0 [pid 5121] ioctl(5, LOOP_CLR_FD [pid 5118] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5121] <... ioctl resumed>) = 0 [pid 5120] mkdir("./bus", 0777 [pid 5090] <... openat resumed>) = 4 [pid 5087] <... openat resumed>) = 4 [pid 5118] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5120] <... mkdir resumed>) = 0 [pid 5090] newfstatat(4, "", [pid 5087] newfstatat(4, "", [pid 5122] <... openat resumed>) = 3 [pid 5120] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] getdents64(4, [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5121] ioctl(5, LOOP_SET_FD, 4 [pid 5087] getdents64(4, [pid 5121] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5122] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5121] close(5 [pid 5090] getdents64(4, [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5122] <... ioctl resumed>) = 0 [pid 5121] <... close resumed>) = 0 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5122] memfd_create("syzkaller", 0 [ 111.051937][ T5120] loop5: detected capacity change from 0 to 1024 [pid 5121] close(4 [pid 5118] exit_group(0 [pid 5090] close(4 [pid 5087] getdents64(4, [pid 5122] <... memfd_create resumed>) = 4 [pid 5121] <... close resumed>) = 0 [pid 5118] <... exit_group resumed>) = ? [pid 5090] <... close resumed>) = 0 [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] rmdir("./3/bus" [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5122] <... mmap resumed>) = 0x7fc3fd400000 [pid 5090] <... rmdir resumed>) = 0 [pid 5087] close(4 [pid 5118] +++ exited with 0 +++ [pid 5090] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... close resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] --- 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 */} --- [pid 5087] rmdir("./3/bus" [pid 5090] newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... rmdir resumed>) = 0 [pid 5090] unlink("./3/binderfs" [pid 5088] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5122] 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 5121] exit_group(0 [pid 5090] <... unlink resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5121] <... exit_group resumed>) = ? [pid 5120] <... mount resumed>) = 0 [pid 5090] getdents64(3, [pid 5088] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] close(3 [pid 5087] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5090] <... close resumed>) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] rmdir("./3" [pid 5087] unlink("./3/binderfs") = 0 [pid 5122] <... write resumed>) = 524288 [pid 5090] <... rmdir resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5087] getdents64(3, [pid 5122] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5121] +++ exited with 0 +++ [pid 5120] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5090] mkdir("./4", 0777 [pid 5088] newfstatat(3, "", [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5120] <... openat resumed>) = 4 [pid 5120] chdir("./bus" [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5120] <... chdir resumed>) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5088] getdents64(3, [pid 5087] close(3 [pid 5086] --- 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 5086] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... close resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] rmdir("./3" [pid 5122] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5122] <... openat resumed>) = 5 [pid 5122] ioctl(5, LOOP_SET_FD, 4 [pid 5120] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5088] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... rmdir resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5120] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] <... openat resumed>) = 3 [pid 5088] <... umount2 resumed>) = 0 [pid 5087] mkdir("./4", 0777 [pid 5086] newfstatat(3, "", [pid 5122] <... ioctl resumed>) = 0 [pid 5122] close(4) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5122] close(5) = 0 [pid 5122] mkdir("./bus", 0777) = 0 [pid 5088] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... mkdir resumed>) = 0 [pid 5086] getdents64(3, [pid 5120] exit_group(0 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5090] <... ioctl resumed>) = 0 [pid 5086] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5120] <... exit_group resumed>) = ? [pid 5090] close(3 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5122] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5120] +++ exited with 0 +++ [pid 5090] <... close resumed>) = 0 [pid 5088] newfstatat(AT_FDCWD, "./3/bus", [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... openat resumed>) = 3 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 111.188551][ T5122] loop3: detected capacity change from 0 to 1024 ./strace-static-x86_64: Process 5123 attached [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5088] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5086] unlink("./4/binderfs") = 0 [pid 5086] getdents64(3, [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5123] set_robust_list(0x555560e9f660, 24 [pid 5091] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5123 [pid 5088] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5123] <... set_robust_list resumed>) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... openat resumed>) = 4 [pid 5086] close(3 [pid 5091] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5123] chdir("./4" [pid 5091] <... openat resumed>) = 3 [pid 5088] newfstatat(4, "", [pid 5086] <... close resumed>) = 0 [pid 5123] <... chdir resumed>) = 0 [pid 5091] newfstatat(3, "", [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] rmdir("./4") = 0 [pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5122] <... mount resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] getdents64(4, [pid 5086] mkdir("./5", 0777 [pid 5122] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5122] chdir("./bus") = 0 [pid 5123] <... prctl resumed>) = 0 [pid 5091] getdents64(3, [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5086] <... mkdir resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5088] getdents64(4, [pid 5123] setpgid(0, 0 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5091] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] close(4) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5088] rmdir("./3/bus" [pid 5122] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5088] <... rmdir resumed>) = 0 [pid 5123] <... setpgid resumed>) = 0 [pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5122] exit_group(0 [pid 5088] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... openat resumed>) = 3 [pid 5122] <... exit_group resumed>) = ? [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5122] +++ exited with 0 +++ [pid 5088] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5089] --- 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 5086] ioctl(3, LOOP_CLR_FD [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5123] <... openat resumed>) = 3 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] unlink("./3/binderfs" [pid 5086] <... ioctl resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5089] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] <... unlink resumed>) = 0 [pid 5086] close(3 [pid 5089] getdents64(3, [pid 5088] getdents64(3, [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] <... close resumed>) = 0 [pid 5089] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5123] write(3, "1000", 4 [pid 5091] <... umount2 resumed>) = 0 [pid 5089] <... umount2 resumed>) = 0 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] <... ioctl resumed>) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5123] <... write resumed>) = 4 [pid 5088] close(3 [pid 5089] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./4/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5089] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5123] close(3 [pid 5089] <... openat resumed>) = 4 [pid 5088] <... close resumed>) = 0 [pid 5123] <... close resumed>) = 0 [pid 5091] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 5124 attached [pid 5123] symlink("/dev/binderfs", "./binderfs" [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] getdents64(4, [pid 5088] rmdir("./3" [pid 5087] close(3 [pid 5091] newfstatat(AT_FDCWD, "./3/bus", [pid 5124] set_robust_list(0x555560e9f660, 24 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5124] <... set_robust_list resumed>) = 0 [pid 5089] getdents64(4, [pid 5124] chdir("./5" [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5089] close(4 [pid 5124] <... chdir resumed>) = 0 [pid 5123] <... symlink resumed>) = 0 [pid 5091] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... close resumed>) = 0 [pid 5088] mkdir("./4", 0777 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5124 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] rmdir("./4/bus" [pid 5124] <... prctl resumed>) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5088] <... mkdir resumed>) = 0 [pid 5124] setpgid(0, 0 [pid 5091] <... openat resumed>) = 4 [pid 5124] <... setpgid resumed>) = 0 [pid 5123] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5091] newfstatat(4, "", [pid 5089] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5124] write(3, "1000", 4 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5124] <... write resumed>) = 4 [pid 5089] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5124] close(3 [pid 5091] getdents64(4, [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5124] <... close resumed>) = 0 [pid 5089] unlink("./4/binderfs"./strace-static-x86_64: Process 5125 attached [pid 5123] <... openat resumed>) = 3 [pid 5125] set_robust_list(0x555560e9f660, 24 [pid 5124] symlink("/dev/binderfs", "./binderfs" [pid 5123] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5089] <... unlink resumed>) = 0 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5125 [pid 5124] <... symlink resumed>) = 0 [pid 5124] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5124] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = -1 ENXIO (No such device or address) [pid 5124] memfd_create("syzkaller", 0) = 4 [pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5089] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] close(3) = 0 [pid 5123] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5123] memfd_create("syzkaller", 0 [pid 5125] <... set_robust_list resumed>) = 0 [pid 5089] rmdir("./4" [pid 5088] <... openat resumed>) = 3 [pid 5125] chdir("./4" [pid 5123] <... memfd_create resumed>) = 4 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5125] <... chdir resumed>) = 0 [pid 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5124] 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 5123] <... mmap resumed>) = 0x7fc3fd400000 [pid 5091] getdents64(4, [pid 5125] <... prctl resumed>) = 0 [pid 5089] mkdir("./5", 0777) = 0 [pid 5125] setpgid(0, 0 [pid 5123] 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 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5125] <... setpgid resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] <... openat resumed>) = 3 [pid 5091] close(4 [pid 5125] <... openat resumed>) = 3 [pid 5124] <... write resumed>) = 524288 [pid 5091] <... close resumed>) = 0 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5091] rmdir("./3/bus" [pid 5089] <... ioctl resumed>) = 0 [pid 5089] close(3) = 0 [pid 5125] write(3, "1000", 4 [pid 5091] <... rmdir resumed>) = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5125] <... write resumed>) = 4 [pid 5091] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5125] close(3 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5125] <... close resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5125] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5091] unlink("./3/binderfs" [pid 5125] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] <... unlink resumed>) = 0 [pid 5125] <... openat resumed>) = 3 [pid 5123] <... write resumed>) = 524288 [pid 5091] getdents64(3, [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5126 ./strace-static-x86_64: Process 5126 attached [pid 5125] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5124] munmap(0x7fc3fd400000, 138412032 [pid 5123] munmap(0x7fc3fd400000, 138412032 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] <... ioctl resumed>) = 0 [pid 5091] close(3 [pid 5126] set_robust_list(0x555560e9f660, 24 [pid 5125] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5124] <... munmap resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5091] rmdir("./3" [pid 5126] <... set_robust_list resumed>) = 0 [pid 5126] chdir("./5" [pid 5125] memfd_create("syzkaller", 0 [pid 5124] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5123] <... munmap resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5088] close(3 [pid 5126] <... chdir resumed>) = 0 [pid 5125] <... memfd_create resumed>) = 4 [pid 5123] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5091] mkdir("./4", 0777 [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5126] <... prctl resumed>) = 0 [pid 5125] <... mmap resumed>) = 0x7fc3fd400000 [pid 5124] <... openat resumed>) = 5 [pid 5123] <... openat resumed>) = 5 [pid 5091] <... mkdir resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5124] ioctl(5, LOOP_SET_FD, 4 [pid 5126] setpgid(0, 0 [pid 5125] 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 5123] ioctl(5, LOOP_SET_FD, 4 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5126] <... setpgid resumed>) = 0 [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... openat resumed>) = 3 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5127 ./strace-static-x86_64: Process 5127 attached [pid 5126] <... openat resumed>) = 3 [pid 5127] set_robust_list(0x555560e9f660, 24 [pid 5126] write(3, "1000", 4) = 4 [pid 5124] <... ioctl resumed>) = 0 [pid 5126] close(3) = 0 [pid 5126] symlink("/dev/binderfs", "./binderfs" [pid 5127] <... set_robust_list resumed>) = 0 [pid 5126] <... symlink resumed>) = 0 [pid 5124] close(4 [pid 5123] <... ioctl resumed>) = 0 [pid 5124] <... close resumed>) = 0 [pid 5123] close(4 [pid 5127] chdir("./4" [pid 5123] <... close resumed>) = 0 [pid 5127] <... chdir resumed>) = 0 [pid 5124] close(5 [pid 5123] close(5 [pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5126] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5127] <... prctl resumed>) = 0 [pid 5123] <... close resumed>) = 0 [pid 5124] <... close resumed>) = 0 [pid 5127] setpgid(0, 0 [pid 5124] mkdir("./bus", 0777 [pid 5123] mkdir("./bus", 0777 [pid 5127] <... setpgid resumed>) = 0 [pid 5124] <... mkdir resumed>) = 0 [pid 5123] <... mkdir resumed>) = 0 [ 111.458585][ T5124] loop0: detected capacity change from 0 to 1024 [ 111.470982][ T5123] loop4: detected capacity change from 0 to 1024 [pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5126] <... openat resumed>) = 3 [pid 5125] <... write resumed>) = 524288 [pid 5123] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5091] <... ioctl resumed>) = 0 [pid 5124] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5125] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5127] write(3, "1000", 4 [pid 5126] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5125] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5127] <... write resumed>) = 4 [pid 5125] <... openat resumed>) = 5 [pid 5125] ioctl(5, LOOP_SET_FD, 4 [pid 5127] close(3 [pid 5123] <... mount resumed>) = 0 [pid 5127] <... close resumed>) = 0 [pid 5127] symlink("/dev/binderfs", "./binderfs" [pid 5123] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5091] close(3 [pid 5127] <... symlink resumed>) = 0 [pid 5123] <... openat resumed>) = 4 [pid 5091] <... close resumed>) = 0 [pid 5123] chdir("./bus") = 0 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5127] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5123] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5127] <... openat resumed>) = 3 [pid 5125] <... ioctl resumed>) = 0 [pid 5123] exit_group(0./strace-static-x86_64: Process 5128 attached [ 111.543874][ T5125] loop1: detected capacity change from 0 to 1024 [pid 5127] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5126] <... ioctl resumed>) = 0 [pid 5125] close(4 [pid 5124] <... mount resumed>) = 0 [pid 5123] <... exit_group resumed>) = ? [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5128 [pid 5128] set_robust_list(0x555560e9f660, 24 [pid 5126] memfd_create("syzkaller", 0 [pid 5125] <... close resumed>) = 0 [pid 5125] close(5 [pid 5128] <... set_robust_list resumed>) = 0 [pid 5125] <... close resumed>) = 0 [pid 5124] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5128] chdir("./4" [pid 5124] <... openat resumed>) = 4 [pid 5128] <... chdir resumed>) = 0 [pid 5127] <... ioctl resumed>) = 0 [pid 5126] <... memfd_create resumed>) = 4 [pid 5125] mkdir("./bus", 0777 [pid 5124] chdir("./bus" [pid 5123] +++ exited with 0 +++ [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5127] memfd_create("syzkaller", 0 [pid 5124] <... chdir resumed>) = 0 [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5128] <... prctl resumed>) = 0 [pid 5127] <... memfd_create resumed>) = 4 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5125] <... mkdir resumed>) = 0 [pid 5124] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5128] setpgid(0, 0 [pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5126] <... mmap resumed>) = 0x7fc3fd400000 [pid 5124] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5128] <... setpgid resumed>) = 0 [pid 5127] <... mmap resumed>) = 0x7fc3fd400000 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5124] exit_group(0 [pid 5128] <... openat resumed>) = 3 [pid 5126] 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 5128] write(3, "1000", 4 [pid 5127] 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 5125] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5124] <... exit_group resumed>) = ? [pid 5090] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5128] <... write resumed>) = 4 [pid 5124] +++ exited with 0 +++ [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5128] close(3) = 0 [pid 5090] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5128] symlink("/dev/binderfs", "./binderfs" [pid 5090] <... openat resumed>) = 3 [pid 5086] restart_syscall(<... resuming interrupted clone ...> [pid 5128] <... symlink resumed>) = 0 [pid 5090] newfstatat(3, "", [pid 5086] <... restart_syscall resumed>) = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5128] <... openat resumed>) = 3 [pid 5090] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5128] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5126] <... write resumed>) = 524288 [pid 5090] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5128] <... ioctl resumed>) = 0 [pid 5127] <... write resumed>) = 524288 [pid 5086] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5128] memfd_create("syzkaller", 0) = 4 [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5086] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5125] <... mount resumed>) = 0 [pid 5086] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5125] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5127] munmap(0x7fc3fd400000, 138412032 [pid 5126] munmap(0x7fc3fd400000, 138412032 [pid 5125] <... openat resumed>) = 4 [pid 5127] <... munmap resumed>) = 0 [pid 5125] chdir("./bus" [pid 5128] 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 5126] <... munmap resumed>) = 0 [pid 5125] <... chdir resumed>) = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5127] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5126] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5125] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] <... umount2 resumed>) = 0 [pid 5126] <... openat resumed>) = 5 [pid 5126] ioctl(5, LOOP_SET_FD, 4 [pid 5127] <... openat resumed>) = 5 [pid 5125] exit_group(0 [pid 5086] <... umount2 resumed>) = 0 [pid 5125] <... exit_group resumed>) = ? [pid 5090] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./5/bus", [pid 5127] ioctl(5, LOOP_SET_FD, 4 [pid 5090] newfstatat(AT_FDCWD, "./4/bus", [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5090] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5090] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] getdents64(4, [pid 5128] <... write resumed>) = 524288 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5086] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] close(4) = 0 [pid 5090] rmdir("./4/bus" [pid 5125] +++ exited with 0 +++ [pid 5090] <... rmdir resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5128] munmap(0x7fc3fd400000, 138412032 [pid 5127] <... ioctl resumed>) = 0 [pid 5126] <... ioctl resumed>) = 0 [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5086] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5128] <... munmap resumed>) = 0 [pid 5086] <... openat resumed>) = 4 [pid 5086] newfstatat(4, "", [pid 5127] close(4 [pid 5090] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5127] <... close resumed>) = 0 [pid 5126] close(4 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] getdents64(4, [pid 5128] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5127] close(5 [pid 5126] <... close resumed>) = 0 [pid 5090] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5128] <... openat resumed>) = 5 [pid 5127] <... close resumed>) = 0 [pid 5128] ioctl(5, LOOP_SET_FD, 4 [pid 5127] mkdir("./bus", 0777 [pid 5087] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] getdents64(4, [pid 5127] <... mkdir resumed>) = 0 [pid 5126] close(5 [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... openat resumed>) = 3 [pid 5087] newfstatat(3, "", [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5126] <... close resumed>) = 0 [pid 5090] unlink("./4/binderfs" [pid 5126] mkdir("./bus", 0777 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5127] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5086] close(4 [pid 5090] <... unlink resumed>) = 0 [pid 5087] getdents64(3, [pid 5086] <... close resumed>) = 0 [ 111.713537][ T5126] loop3: detected capacity change from 0 to 1024 [ 111.730859][ T5127] loop2: detected capacity change from 0 to 1024 [pid 5126] <... mkdir resumed>) = 0 [pid 5090] getdents64(3, [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] close(3) = 0 [pid 5087] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] rmdir("./5/bus" [pid 5126] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5090] rmdir("./4" [pid 5086] <... rmdir resumed>) = 0 [pid 5086] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5090] <... rmdir resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] mkdir("./5", 0777 [pid 5087] <... umount2 resumed>) = 0 [pid 5086] unlink("./5/binderfs" [pid 5090] <... mkdir resumed>) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] close(3) = 0 [pid 5086] rmdir("./5") = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5087] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] mkdir("./6", 0777 [pid 5127] <... mount resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5128] <... ioctl resumed>) = 0 [pid 5087] newfstatat(AT_FDCWD, "./4/bus", [pid 5128] close(4) = 0 [pid 5128] close(5) = 0 [pid 5128] mkdir("./bus", 0777) = 0 [pid 5127] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] <... mkdir resumed>) = 0 [pid 5128] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5127] <... openat resumed>) = 4 [pid 5087] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... openat resumed>) = 3 [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5087] <... openat resumed>) = 4 [pid 5086] <... ioctl resumed>) = 0 [pid 5127] chdir("./bus" [pid 5087] newfstatat(4, "", [pid 5086] close(3 [pid 5127] <... chdir resumed>) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... close resumed>) = 0 [pid 5127] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5126] <... mount resumed>) = 0 [pid 5087] getdents64(4, [pid 5127] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 111.784547][ T5128] loop5: detected capacity change from 0 to 1024 [pid 5126] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5126] <... openat resumed>) = 4 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5087] getdents64(4, [pid 5127] exit_group(0 [pid 5126] chdir("./bus" [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5127] <... exit_group resumed>) = ? [pid 5126] <... chdir resumed>) = 0 [pid 5087] close(4 [pid 5126] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5087] <... close resumed>) = 0 [pid 5126] exit_group(0 [pid 5087] rmdir("./4/bus" [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5129 [pid 5087] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5129 attached [pid 5126] <... exit_group resumed>) = ? [pid 5087] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5127] +++ exited with 0 +++ [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5126] +++ exited with 0 +++ [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5129] set_robust_list(0x555560e9f660, 24 [pid 5128] <... mount resumed>) = 0 [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5129] <... set_robust_list resumed>) = 0 [pid 5128] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5089] restart_syscall(<... resuming interrupted clone ...> [pid 5088] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... restart_syscall resumed>) = 0 [pid 5089] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... openat resumed>) = 3 [pid 5088] newfstatat(3, "", [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] getdents64(3, [pid 5089] <... openat resumed>) = 3 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] newfstatat(3, "", [pid 5088] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5128] <... openat resumed>) = 4 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] unlink("./4/binderfs" [pid 5129] chdir("./6" [pid 5089] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5128] chdir("./bus") = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5128] exit_group(0) = ? [pid 5087] <... unlink resumed>) = 0 [pid 5129] <... chdir resumed>) = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5090] <... ioctl resumed>) = 0 [pid 5087] getdents64(3, [pid 5129] <... prctl resumed>) = 0 [pid 5090] close(3 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5129] setpgid(0, 0 [pid 5090] <... close resumed>) = 0 [pid 5087] close(3 [pid 5129] <... setpgid resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] rmdir("./4" [pid 5129] <... openat resumed>) = 3 [pid 5087] <... rmdir resumed>) = 0 [pid 5129] write(3, "1000", 4 [pid 5087] mkdir("./5", 0777 [pid 5129] <... write resumed>) = 4 [pid 5088] <... umount2 resumed>) = 0 [pid 5087] <... mkdir resumed>) = 0 [pid 5129] close(3 [pid 5088] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5129] <... close resumed>) = 0 [pid 5129] symlink("/dev/binderfs", "./binderfs" [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5130 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... openat resumed>) = 3 [pid 5088] newfstatat(AT_FDCWD, "./4/bus", [pid 5129] <... symlink resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5088] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5130 attached ) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5130] set_robust_list(0x555560e9f660, 24 [pid 5129] <... openat resumed>) = 3 [pid 5128] +++ exited with 0 +++ [pid 5130] <... set_robust_list resumed>) = 0 [pid 5129] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5130] chdir("./5" [pid 5129] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5089] <... umount2 resumed>) = 0 [pid 5130] <... chdir resumed>) = 0 [pid 5129] memfd_create("syzkaller", 0 [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5088] newfstatat(4, "", [pid 5091] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] getdents64(4, [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5129] <... memfd_create resumed>) = 4 [pid 5091] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5091] <... openat resumed>) = 3 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] getdents64(4, [pid 5091] newfstatat(3, "", [pid 5089] newfstatat(AT_FDCWD, "./5/bus", [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] close(4 [pid 5091] getdents64(3, [pid 5089] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... close resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] rmdir("./4/bus" [pid 5130] <... prctl resumed>) = 0 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... rmdir resumed>) = 0 [pid 5130] setpgid(0, 0 [pid 5129] <... mmap resumed>) = 0x7fc3fd400000 [pid 5089] <... openat resumed>) = 4 [pid 5088] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] newfstatat(4, "", [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5130] <... setpgid resumed>) = 0 [pid 5129] 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 5091] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... ioctl resumed>) = 0 [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] getdents64(4, [pid 5087] close(3 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5087] <... close resumed>) = 0 [pid 5130] <... openat resumed>) = 3 [pid 5089] getdents64(4, [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5130] write(3, "1000", 4 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5088] unlink("./4/binderfs" [pid 5130] <... write resumed>) = 4 [pid 5089] close(4 [pid 5088] <... unlink resumed>) = 0 [pid 5130] close(3 [pid 5088] getdents64(3, [pid 5130] <... close resumed>) = 0 [pid 5130] symlink("/dev/binderfs", "./binderfs" [pid 5089] <... close resumed>) = 0 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] rmdir("./5/bus" [pid 5088] close(3) = 0 [pid 5130] <... symlink resumed>) = 0 [pid 5088] rmdir("./4"./strace-static-x86_64: Process 5131 attached [pid 5130] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] <... umount2 resumed>) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5089] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5131] set_robust_list(0x555560e9f660, 24 [pid 5130] <... openat resumed>) = 3 [pid 5129] <... write resumed>) = 524288 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5131 [pid 5130] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5131] <... set_robust_list resumed>) = 0 [pid 5130] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5129] munmap(0x7fc3fd400000, 138412032 [pid 5091] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5088] mkdir("./5", 0777 [pid 5131] chdir("./5" [pid 5129] <... munmap resumed>) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... mkdir resumed>) = 0 [pid 5130] memfd_create("syzkaller", 0 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 5091] newfstatat(AT_FDCWD, "./4/bus", [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5131] <... chdir resumed>) = 0 [pid 5129] ioctl(5, LOOP_SET_FD, 4 [pid 5130] <... memfd_create resumed>) = 4 [pid 5089] unlink("./5/binderfs" [pid 5088] <... openat resumed>) = 3 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... unlink resumed>) = 0 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5091] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] getdents64(3, [pid 5088] <... ioctl resumed>) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] close(3 [pid 5091] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] close(3 [pid 5091] <... openat resumed>) = 4 [pid 5089] <... close resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5091] newfstatat(4, "", [pid 5089] rmdir("./5" [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5131] <... prctl resumed>) = 0 [pid 5091] getdents64(4, ./strace-static-x86_64: Process 5132 attached 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5089] mkdir("./6", 0777 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5132 [pid 5132] set_robust_list(0x555560e9f660, 24 [pid 5091] getdents64(4, [pid 5089] <... mkdir resumed>) = 0 [pid 5132] <... set_robust_list resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5132] chdir("./5" [pid 5131] setpgid(0, 0 [pid 5091] close(4 [pid 5089] <... openat resumed>) = 3 [pid 5132] <... chdir resumed>) = 0 [pid 5131] <... setpgid resumed>) = 0 [pid 5130] <... mmap resumed>) = 0x7fc3fd400000 [pid 5091] <... close resumed>) = 0 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] rmdir("./4/bus" [pid 5089] <... ioctl resumed>) = 0 [pid 5132] <... prctl resumed>) = 0 [pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... rmdir resumed>) = 0 [pid 5089] close(3 [pid 5132] setpgid(0, 0 [pid 5091] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... close resumed>) = 0 [pid 5132] <... setpgid resumed>) = 0 [pid 5131] <... openat resumed>) = 3 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5131] write(3, "1000", 4 [pid 5130] 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 5129] <... ioctl resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5132] <... openat resumed>) = 3 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5133 ./strace-static-x86_64: Process 5133 attached [pid 5132] write(3, "1000", 4 [pid 5091] unlink("./4/binderfs" [pid 5129] close(4 [pid 5131] <... write resumed>) = 4 [pid 5129] <... close resumed>) = 0 [pid 5131] close(3 [ 112.041054][ T5129] loop0: detected capacity change from 0 to 1024 [pid 5129] close(5 [pid 5131] <... close resumed>) = 0 [pid 5131] symlink("/dev/binderfs", "./binderfs" [pid 5133] set_robust_list(0x555560e9f660, 24 [pid 5132] <... write resumed>) = 4 [pid 5131] <... symlink resumed>) = 0 [pid 5091] <... unlink resumed>) = 0 [pid 5132] close(3) = 0 [pid 5091] getdents64(3, [pid 5133] <... set_robust_list resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5133] chdir("./6" [pid 5132] symlink("/dev/binderfs", "./binderfs" [pid 5091] close(3 [pid 5133] <... chdir resumed>) = 0 [pid 5132] <... symlink resumed>) = 0 [pid 5129] <... close resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5131] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5129] mkdir("./bus", 0777 [pid 5091] rmdir("./4" [pid 5133] <... prctl resumed>) = 0 [pid 5132] <... openat resumed>) = 3 [pid 5129] <... mkdir resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5133] setpgid(0, 0 [pid 5132] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5131] <... openat resumed>) = 3 [pid 5091] mkdir("./5", 0777 [pid 5133] <... setpgid resumed>) = 0 [pid 5131] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5129] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5091] <... mkdir resumed>) = 0 [pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5133] <... openat resumed>) = 3 [pid 5130] <... write resumed>) = 524288 [pid 5091] <... openat resumed>) = 3 [pid 5133] write(3, "1000", 4 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5133] <... write resumed>) = 4 [pid 5130] munmap(0x7fc3fd400000, 138412032 [pid 5091] <... ioctl resumed>) = 0 [pid 5133] close(3 [pid 5091] close(3 [pid 5133] <... close resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5133] symlink("/dev/binderfs", "./binderfs" [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5133] <... symlink resumed>) = 0 [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDONLY./strace-static-x86_64: Process 5134 attached [pid 5130] <... munmap resumed>) = 0 [pid 5134] set_robust_list(0x555560e9f660, 24 [pid 5133] <... openat resumed>) = 3 [pid 5130] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5134 [pid 5134] <... set_robust_list resumed>) = 0 [pid 5130] <... openat resumed>) = 5 [pid 5130] ioctl(5, LOOP_SET_FD, 4 [pid 5134] chdir("./5") = 0 [pid 5133] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5132] <... ioctl resumed>) = 0 [pid 5130] <... ioctl resumed>) = 0 [pid 5132] memfd_create("syzkaller", 0 [pid 5134] <... prctl resumed>) = 0 [pid 5132] <... memfd_create resumed>) = 4 [pid 5134] setpgid(0, 0 [pid 5133] <... ioctl resumed>) = 0 [ 112.139588][ T5130] loop4: detected capacity change from 0 to 1024 [ 112.162005][ T5129] ================================================================== [ 112.170293][ T5129] BUG: KASAN: slab-use-after-free in hfsplus_read_wrapper+0xf86/0x1070 [ 112.178613][ T5129] Read of size 2 at addr ffff88802ebe4c00 by task syz-executor134/5129 [ 112.186885][ T5129] [ 112.189258][ T5129] CPU: 1 PID: 5129 Comm: syz-executor134 Not tainted 6.9.0-rc4-syzkaller-00329-g48cf398f15fc #0 [ 112.200431][ T5129] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 112.210515][ T5129] Call Trace: [ 112.213821][ T5129] [ 112.216780][ T5129] dump_stack_lvl+0x116/0x1f0 [ 112.221540][ T5129] print_report+0xc3/0x620 [ 112.226016][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.231875][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.237558][ T5129] ? __phys_addr+0xc6/0x150 [ 112.241466][ T5133] loop3: detected capacity change from 0 to 1024 [ 112.242091][ T5129] kasan_report+0xd9/0x110 [ 112.252862][ T5129] ? hfsplus_read_wrapper+0xf86/0x1070 [ 112.255227][ T5132] loop2: detected capacity change from 0 to 1024 [ 112.258371][ T5129] ? hfsplus_read_wrapper+0xf86/0x1070 [ 112.258429][ T5129] hfsplus_read_wrapper+0xf86/0x1070 [ 112.275525][ T5129] ? __pfx_hfsplus_read_wrapper+0x10/0x10 [ 112.281280][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.286944][ T5129] ? do_raw_spin_lock+0x12d/0x2c0 [ 112.292006][ T5129] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 112.297417][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.303081][ T5129] ? do_raw_spin_unlock+0x172/0x230 [ 112.308317][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.313982][ T5129] ? _raw_spin_unlock+0x28/0x50 [ 112.318869][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.324527][ T5129] ? find_nls+0x125/0x170 [ 112.328892][ T5129] hfsplus_fill_super+0x352/0x1bc0 [ 112.334044][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.339727][ T5129] ? __pfx_hfsplus_fill_super+0x10/0x10 [ 112.345308][ T5129] ? bdev_name.constprop.0+0xa1/0x330 [ 112.350722][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.356412][ T5129] ? find_held_lock+0x2d/0x110 [ 112.361255][ T5129] ? do_raw_spin_lock+0x12d/0x2c0 [ 112.366322][ T5129] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 112.371732][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.377488][ T5129] ? set_blocksize+0x2b1/0x350 [ 112.382281][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.387946][ T5129] ? sb_set_blocksize+0xf6/0x120 [ 112.392913][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.398573][ T5129] ? setup_bdev_super+0x392/0x720 [ 112.403647][ T5129] ? __pfx_hfsplus_fill_super+0x10/0x10 [ 112.409400][ T5129] mount_bdev+0x1e6/0x2d0 [ 112.413758][ T5129] ? __pfx_mount_bdev+0x10/0x10 [ 112.418638][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.424413][ T5129] ? apparmor_capable+0x126/0x1e0 [ 112.429485][ T5129] ? __pfx_hfsplus_mount+0x10/0x10 [ 112.434625][ T5129] legacy_get_tree+0x10c/0x220 [ 112.439630][ T5129] vfs_get_tree+0x92/0x380 [ 112.444072][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.449756][ T5129] path_mount+0x14e6/0x1f20 [ 112.454375][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.460038][ T5129] ? kmem_cache_free+0x12e/0x380 [ 112.465037][ T5129] ? __pfx_path_mount+0x10/0x10 [ 112.469930][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.475600][ T5129] ? putname+0x12e/0x170 [ 112.479912][ T5129] __x64_sys_mount+0x297/0x320 [ 112.484731][ T5129] ? __pfx___x64_sys_mount+0x10/0x10 [ 112.490235][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.495901][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.501566][ T5129] ? _raw_spin_unlock_irq+0x2e/0x50 [ 112.506802][ T5129] ? srso_alias_return_thunk+0x5/0xfbef5 [ 112.512494][ T5129] ? ptrace_notify+0xf1/0x130 [ 112.517220][ T5129] do_syscall_64+0xcf/0x260 [ 112.521788][ T5129] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 112.527977][ T5129] RIP: 0033:0x7fc4059d265a [ 112.532429][ T5129] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 112.552164][ T5129] RSP: 002b:00007ffeb92725b8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 112.560614][ T5129] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc4059d265a [ 112.568633][ T5129] RDX: 0000000020000000 RSI: 0000000020000c80 RDI: 00007ffeb9272600 [ 112.576814][ T5129] RBP: 0000000000000005 R08: 00007ffeb9272640 R09: 0000000000000601 [ 112.584813][ T5129] R10: 0000000000200008 R11: 0000000000000286 R12: 00007ffeb9272600 [ 112.593096][ T5129] R13: 00007ffeb9272640 R14: 0000000000080000 R15: 0000000000000004 [ 112.601105][ T5129] [ 112.604132][ T5129] [ 112.606460][ T5129] The buggy address belongs to the object at ffff88802ebe4c00 [ 112.606460][ T5129] which belongs to the cache kmalloc-512 of size 512 [ 112.620621][ T5129] The buggy address is located 0 bytes inside of [ 112.620621][ T5129] freed 512-byte region [ffff88802ebe4c00, ffff88802ebe4e00) [ 112.634303][ T5129] [ 112.636635][ T5129] The buggy address belongs to the physical page: [ 112.643067][ T5129] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2ebe4 [ 112.651854][ T5129] head: order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 112.659590][ T5129] flags: 0xfff80000000840(slab|head|node=0|zone=1|lastcpupid=0xfff) [ 112.667590][ T5129] page_type: 0xffffffff() [ 112.671937][ T5129] raw: 00fff80000000840 ffff888015041c80 ffffea0000a55900 dead000000000002 [ 112.680546][ T5129] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 112.689159][ T5129] head: 00fff80000000840 ffff888015041c80 ffffea0000a55900 dead000000000002 [ 112.697856][ T5129] head: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 112.706553][ T5129] head: 00fff80000000002 ffffea0000baf901 ffffea0000baf948 00000000ffffffff [ 112.715279][ T5129] head: 0000000400000000 0000000000000000 00000000ffffffff 0000000000000000 [ 112.723963][ T5129] page dumped because: kasan: bad access detected [ 112.730578][ T5129] page_owner tracks the page as allocated [ 112.736306][ T5129] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4547, tgid -809417370 (udevadm), ts 4547, free_ts 50463936514 [ 112.757191][ T5129] post_alloc_hook+0x2d4/0x350 [ 112.762030][ T5129] get_page_from_freelist+0xa28/0x3780 [ 112.767520][ T5129] __alloc_pages+0x22b/0x2460 [ 112.772217][ T5129] new_slab+0xcc/0x3a0 [ 112.776319][ T5129] ___slab_alloc+0x66d/0x1790 [ 112.781038][ T5129] __slab_alloc.constprop.0+0x56/0xb0 [ 112.786437][ T5129] kmalloc_trace+0x2fb/0x330 [ 112.791057][ T5129] kernfs_fop_open+0x28b/0xdb0 [ 112.795863][ T5129] do_dentry_open+0x8dd/0x18c0 [ 112.800656][ T5129] path_openat+0x1dfb/0x2990 [ 112.805270][ T5129] do_filp_open+0x1dc/0x430 [ 112.809795][ T5129] do_sys_openat2+0x17a/0x1e0 [ 112.814506][ T5129] __x64_sys_openat+0x175/0x210 [ 112.819394][ T5129] do_syscall_64+0xcf/0x260 [ 112.823933][ T5129] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 112.829870][ T5129] page last free pid 4573 tgid 4573 stack trace: [ 112.836203][ T5129] free_unref_page_prepare+0x527/0xb10 [ 112.841705][ T5129] free_unref_page+0x33/0x3c0 [ 112.846445][ T5129] __put_partials+0x14c/0x170 [ 112.851152][ T5129] qlist_free_all+0x4e/0x140 [ 112.855804][ T5129] kasan_quarantine_reduce+0x192/0x1e0 [ 112.861336][ T5129] __kasan_slab_alloc+0x69/0x90 [ 112.866225][ T5129] kmem_cache_alloc+0x136/0x320 [ 112.871114][ T5129] getname_flags.part.0+0x50/0x4f0 [ 112.876276][ T5129] getname_flags+0x9b/0xf0 [ 112.880711][ T5129] vfs_fstatat+0x9a/0x150 [ 112.885076][ T5129] __do_sys_newfstatat+0x98/0x120 [ 112.890134][ T5129] do_syscall_64+0xcf/0x260 [ 112.894746][ T5129] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 112.900692][ T5129] [ 112.903108][ T5129] Memory state around the buggy address: [ 112.908759][ T5129] ffff88802ebe4b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 112.916856][ T5129] ffff88802ebe4b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 112.924937][ T5129] >ffff88802ebe4c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 112.933012][ T5129] ^ [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5131] <... ioctl resumed>) = 0 [pid 5130] close(4 [pid 5134] <... setpgid resumed>) = 0 [pid 5133] memfd_create("syzkaller", 0 [pid 5132] <... mmap resumed>) = 0x7fc3fd400000 [pid 5133] <... memfd_create resumed>) = 4 [pid 5132] 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 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5133] 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) = 524288 [pid 5132] <... write resumed>) = 524288 [pid 5133] munmap(0x7fc3fd400000, 138412032 [pid 5132] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5133] <... munmap resumed>) = 0 [pid 5133] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 5 [pid 5133] ioctl(5, LOOP_SET_FD, 4 [pid 5132] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 5 [pid 5132] ioctl(5, LOOP_SET_FD, 4 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5133] <... ioctl resumed>) = 0 [pid 5132] <... ioctl resumed>) = 0 [pid 5131] memfd_create("syzkaller", 0 [pid 5130] <... close resumed>) = 0 [pid 5134] <... openat resumed>) = 3 [pid 5133] close(4 [pid 5132] close(4 [pid 5131] <... memfd_create resumed>) = 4 [pid 5130] close(5) = 0 [ 112.937087][ T5129] ffff88802ebe4c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 112.945166][ T5129] ffff88802ebe4d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 112.953241][ T5129] ================================================================== [pid 5130] mkdir("./bus", 0777) = 0 [pid 5134] write(3, "1000", 4 [pid 5133] <... close resumed>) = 0 [pid 5132] <... close resumed>) = 0 [pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5132] close(5 [pid 5131] <... mmap resumed>) = 0x7fc3fd400000 [pid 5132] <... close resumed>) = 0 [pid 5131] 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 5132] mkdir("./bus", 0777 [pid 5133] close(5 [pid 5132] <... mkdir resumed>) = 0 [pid 5133] <... close resumed>) = 0 [pid 5133] mkdir("./bus", 0777) = 0 [pid 5134] <... write resumed>) = 4 [pid 5133] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5132] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5130] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5134] close(3) = 0 [pid 5134] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5134] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5134] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5134] memfd_create("syzkaller", 0) = 4 [pid 5134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5133] <... mount resumed>) = 0 [pid 5133] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5134] <... mmap resumed>) = 0x7fc3fd400000 [pid 5134] 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 5133] <... openat resumed>) = 4 [pid 5133] chdir("./bus") = 0 [pid 5133] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5133] exit_group(0 [pid 5130] <... mount resumed>) = 0 [pid 5130] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5130] chdir("./bus") = 0 [pid 5130] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5133] <... exit_group resumed>) = ? [pid 5130] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5131] <... write resumed>) = 524288 [pid 5131] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5130] exit_group(0 [pid 5133] +++ exited with 0 +++ [pid 5132] <... mount resumed>) = 0 [pid 5130] <... exit_group resumed>) = ? [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5134] <... write resumed>) = 524288 [pid 5132] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5131] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5130] +++ exited with 0 +++ [pid 5134] munmap(0x7fc3fd400000, 138412032 [pid 5132] <... openat resumed>) = 4 [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5132] chdir("./bus" [pid 5134] <... munmap resumed>) = 0 [pid 5132] <... chdir resumed>) = 0 [pid 5131] <... openat resumed>) = 5 [pid 5131] ioctl(5, LOOP_SET_FD, 4 [pid 5134] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5132] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5090] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5134] <... openat resumed>) = 5 [pid 5132] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [ 113.135472][ T5129] Disabling lock debugging due to kernel taint [ 113.136413][ T5131] loop1: detected capacity change from 0 to 1024 [ 113.141650][ T5129] hfsplus: unable to set blocksize to 1024! [ 113.165095][ T5129] hfsplus: unable to find HFS+ superblock [pid 5132] exit_group(0 [pid 5134] ioctl(5, LOOP_SET_FD, 4 [pid 5132] <... exit_group resumed>) = ? [pid 5090] <... openat resumed>) = 3 [pid 5089] <... openat resumed>) = 3 [pid 5132] +++ exited with 0 +++ [pid 5088] --- 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 5089] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] getdents64(3, [pid 5088] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5088] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5134] <... ioctl resumed>) = 0 [pid 5131] <... ioctl resumed>) = 0 [pid 5090] newfstatat(3, "", [pid 5089] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... openat resumed>) = 3 [pid 5129] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 5131] close(4 [pid 5088] newfstatat(3, "", [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] getdents64(3, [pid 5134] close(4 [pid 5131] <... close resumed>) = 0 [pid 5129] <... openat resumed>) = 4 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5088] getdents64(3, [pid 5131] close(5) = 0 [pid 5134] <... close resumed>) = 0 [pid 5131] mkdir("./bus", 0777 [pid 5129] ioctl(4, LOOP_CLR_FD [pid 5090] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... umount2 resumed>) = 0 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5134] close(5 [pid 5129] <... ioctl resumed>) = 0 [pid 5089] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5134] <... close resumed>) = 0 [pid 5131] <... mkdir resumed>) = 0 [pid 5129] close(4 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5129] <... close resumed>) = 0 [pid 5089] newfstatat(AT_FDCWD, "./6/bus", [pid 5134] mkdir("./bus", 0777 [pid 5131] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5134] <... mkdir resumed>) = 0 [pid 5129] exit_group(0 [pid 5089] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5129] <... exit_group resumed>) = ? [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... umount2 resumed>) = 0 [pid 5089] <... openat resumed>) = 4 [pid 5088] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5134] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5089] getdents64(4, [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] newfstatat(AT_FDCWD, "./5/bus", [pid 5129] +++ exited with 0 +++ [pid 5090] <... umount2 resumed>) = 0 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5089] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] close(4 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... close resumed>) = 0 [pid 5089] rmdir("./6/bus" [pid 5086] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] <... rmdir resumed>) = 0 [pid 5090] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... openat resumed>) = 3 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 113.186556][ T5134] loop5: detected capacity change from 0 to 1024 [pid 5086] newfstatat(3, "", [pid 5090] newfstatat(AT_FDCWD, "./5/bus", [pid 5089] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] <... openat resumed>) = 4 [pid 5086] getdents64(3, [pid 5134] <... mount resumed>) = 0 [pid 5090] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] newfstatat(4, "", [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] unlink("./6/binderfs" [pid 5090] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5134] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5131] <... mount resumed>) = 0 [pid 5090] <... openat resumed>) = 4 [pid 5089] <... unlink resumed>) = 0 [pid 5088] getdents64(4, [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] newfstatat(4, "", [pid 5089] getdents64(3, [pid 5086] newfstatat(AT_FDCWD, "./6/bus", [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5134] <... openat resumed>) = 4 [pid 5131] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5090] getdents64(4, [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] getdents64(4, [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] close(3 [pid 5090] getdents64(4, [pid 5088] close(4 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5131] <... openat resumed>) = 4 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5089] <... close resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5086] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5131] chdir("./bus") = 0 [pid 5086] <... openat resumed>) = 4 [pid 5088] rmdir("./5/bus" [pid 5086] newfstatat(4, "", [pid 5090] close(4 [pid 5089] rmdir("./6" [pid 5131] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5131] exit_group(0) = ? [pid 5088] <... rmdir resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] rmdir("./5/bus" [pid 5089] mkdir("./7", 0777 [pid 5086] getdents64(4, [pid 5090] <... rmdir resumed>) = 0 [pid 5089] <... mkdir resumed>) = 0 [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] getdents64(4, [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5086] close(4 [pid 5134] chdir("./bus" [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5134] <... chdir resumed>) = 0 [pid 5090] unlink("./5/binderfs" [pid 5086] <... close resumed>) = 0 [pid 5086] rmdir("./6/bus" [pid 5131] +++ exited with 0 +++ [pid 5090] <... unlink resumed>) = 0 [pid 5134] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5090] getdents64(3, [pid 5086] <... rmdir resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5086] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5134] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5087] restart_syscall(<... resuming interrupted clone ...> [pid 5086] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5134] exit_group(0 [pid 5087] <... restart_syscall resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5134] <... exit_group resumed>) = ? [pid 5090] close(3 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] unlink("./6/binderfs" [pid 5090] <... close resumed>) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5090] rmdir("./5" [pid 5087] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5134] +++ exited with 0 +++ [pid 5090] <... rmdir resumed>) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] getdents64(3, [pid 5090] mkdir("./6", 0777 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5087] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5091] restart_syscall(<... resuming interrupted clone ...> [pid 5087] <... openat resumed>) = 3 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5091] <... restart_syscall resumed>) = 0 [pid 5087] newfstatat(3, "", [pid 5086] close(3 [pid 5089] <... ioctl resumed>) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] getdents64(3, [pid 5091] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... close resumed>) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] rmdir("./6" [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5091] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... rmdir resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5086] mkdir("./7", 0777 [pid 5091] newfstatat(3, "", [pid 5089] close(3 [pid 5087] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... openat resumed>) = 3 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... close resumed>) = 0 [pid 5091] getdents64(3, [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5135 [pid 5086] <... mkdir resumed>) = 0 [pid 5091] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5135 attached [pid 5135] set_robust_list(0x555560e9f660, 24) = 0 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5135] chdir("./7" [pid 5091] <... umount2 resumed>) = 0 [pid 5090] <... ioctl resumed>) = 0 [pid 5088] unlink("./5/binderfs" [pid 5087] <... umount2 resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5091] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] close(3 [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... ioctl resumed>) = 0 [pid 5135] <... chdir resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./5/bus", [pid 5090] <... close resumed>) = 0 [pid 5086] close(3 [pid 5135] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5086] <... close resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5135] <... prctl resumed>) = 0 [pid 5135] setpgid(0, 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5135] <... setpgid resumed>) = 0 [pid 5135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 5136 attached ./strace-static-x86_64: Process 5137 attached [pid 5091] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... unlink resumed>) = 0 [pid 5087] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5136] set_robust_list(0x555560e9f660, 24) = 0 [pid 5136] chdir("./6" [pid 5137] set_robust_list(0x555560e9f660, 24 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5136 [pid 5088] getdents64(3, [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5137 [pid 5091] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] newfstatat(AT_FDCWD, "./5/bus", [pid 5136] <... chdir resumed>) = 0 [pid 5137] <... set_robust_list resumed>) = 0 [pid 5091] <... openat resumed>) = 4 [pid 5088] close(3 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5137] chdir("./7" [pid 5091] newfstatat(4, "", [pid 5088] <... close resumed>) = 0 [pid 5087] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5137] <... chdir resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] rmdir("./5" [pid 5087] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5137] <... prctl resumed>) = 0 [pid 5091] getdents64(4, [pid 5136] <... prctl resumed>) = 0 [pid 5137] setpgid(0, 0 [pid 5135] write(3, "1000", 4 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] <... rmdir resumed>) = 0 [pid 5087] <... openat resumed>) = 4 [pid 5137] <... setpgid resumed>) = 0 [pid 5091] getdents64(4, [pid 5087] newfstatat(4, "", [pid 5136] setpgid(0, 0 [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5135] <... write resumed>) = 4 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] close(4 [pid 5135] close(3 [pid 5087] getdents64(4, [pid 5135] <... close resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5136] <... setpgid resumed>) = 0 [pid 5135] symlink("/dev/binderfs", "./binderfs" [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5137] <... openat resumed>) = 3 [pid 5135] <... symlink resumed>) = 0 [pid 5091] rmdir("./5/bus" [pid 5087] getdents64(4, [pid 5136] <... openat resumed>) = 3 [pid 5135] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] <... rmdir resumed>) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5087] close(4 [pid 5135] <... openat resumed>) = 3 [pid 5087] <... close resumed>) = 0 [pid 5087] rmdir("./5/bus" [pid 5136] write(3, "1000", 4 [pid 5135] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5136] <... write resumed>) = 4 [pid 5135] <... ioctl resumed>) = 0 [pid 5136] close(3 [pid 5137] write(3, "1000", 4 [pid 5135] memfd_create("syzkaller", 0 [pid 5091] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] mkdir("./6", 0777 [pid 5087] <... rmdir resumed>) = 0 [pid 5087] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5136] <... close resumed>) = 0 [pid 5136] symlink("/dev/binderfs", "./binderfs" [pid 5135] <... memfd_create resumed>) = 4 [pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5136] <... symlink resumed>) = 0 [pid 5137] <... write resumed>) = 4 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... mkdir resumed>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5087] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5137] close(3 [pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5137] <... close resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5137] symlink("/dev/binderfs", "./binderfs" [pid 5136] <... openat resumed>) = 3 [pid 5135] 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 5091] unlink("./5/binderfs" [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5136] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5135] <... write resumed>) = 524288 [pid 5136] <... ioctl resumed>) = 0 [pid 5136] memfd_create("syzkaller", 0 [pid 5088] <... openat resumed>) = 3 [pid 5136] <... memfd_create resumed>) = 4 [pid 5091] <... unlink resumed>) = 0 [pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5137] <... symlink resumed>) = 0 [pid 5091] getdents64(3, [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5087] unlink("./5/binderfs" [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5136] <... mmap resumed>) = 0x7fc3fd400000 [pid 5087] <... unlink resumed>) = 0 [pid 5091] close(3 [pid 5087] getdents64(3, [pid 5136] 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 5137] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] <... close resumed>) = 0 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] close(3 [pid 5137] <... openat resumed>) = 3 [pid 5091] rmdir("./5" [pid 5087] <... close resumed>) = 0 [pid 5087] rmdir("./5") = 0 [pid 5087] mkdir("./6", 0777 [pid 5091] <... rmdir resumed>) = 0 [pid 5087] <... mkdir resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5136] <... write resumed>) = 524288 [pid 5137] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] mkdir("./6", 0777 [pid 5087] <... openat resumed>) = 3 [pid 5087] ioctl(3, LOOP_CLR_FD) = 0 [pid 5087] close(3 [pid 5135] munmap(0x7fc3fd400000, 138412032 [pid 5137] <... ioctl resumed>) = 0 [pid 5135] <... munmap resumed>) = 0 [pid 5091] <... mkdir resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5135] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 5 [pid 5135] ioctl(5, LOOP_SET_FD, 4) = 0 [pid 5136] munmap(0x7fc3fd400000, 138412032 [pid 5137] memfd_create("syzkaller", 0 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5136] <... munmap resumed>) = 0 [pid 5136] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5135] close(4) = 0 [pid 5135] close(5) = 0 [pid 5135] mkdir("./bus", 0777 [pid 5136] <... openat resumed>) = 5 [pid 5137] <... memfd_create resumed>) = 4 [pid 5135] <... mkdir resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5138 ./strace-static-x86_64: Process 5138 attached [pid 5136] ioctl(5, LOOP_SET_FD, 4 [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5138] set_robust_list(0x555560e9f660, 24) = 0 [pid 5138] chdir("./6" [pid 5088] <... ioctl resumed>) = 0 [pid 5138] <... chdir resumed>) = 0 [pid 5136] <... ioctl resumed>) = 0 [pid 5135] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5136] close(4 [pid 5138] <... prctl resumed>) = 0 [pid 5136] <... close resumed>) = 0 [pid 5138] setpgid(0, 0 [pid 5136] close(5 [pid 5137] 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 5136] <... close resumed>) = 0 [pid 5138] <... setpgid resumed>) = 0 [pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5135] <... mount resumed>) = 0 [pid 5138] write(3, "1000", 4 [pid 5136] mkdir("./bus", 0777 [pid 5135] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5138] <... write resumed>) = 4 [pid 5136] <... mkdir resumed>) = 0 [pid 5135] <... openat resumed>) = 4 [pid 5138] close(3) = 0 [pid 5138] symlink("/dev/binderfs", "./binderfs" [pid 5135] chdir("./bus" [pid 5138] <... symlink resumed>) = 0 [pid 5135] <... chdir resumed>) = 0 [pid 5088] close(3 [pid 5135] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... close resumed>) = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5136] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5135] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 113.448263][ T5135] loop3: detected capacity change from 0 to 1024 [ 113.486001][ T5136] loop4: detected capacity change from 0 to 1024 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5138] <... openat resumed>) = 3 [pid 5135] exit_group(0 [pid 5138] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5136] <... mount resumed>) = 0 [pid 5135] <... exit_group resumed>) = ? [pid 5138] <... ioctl resumed>) = 0 [pid 5136] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5138] memfd_create("syzkaller", 0 [pid 5136] <... openat resumed>) = 4 [pid 5137] <... write resumed>) = 524288 [pid 5135] +++ exited with 0 +++ ./strace-static-x86_64: Process 5139 attached [pid 5136] chdir("./bus" [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5135, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5138] <... memfd_create resumed>) = 4 [pid 5137] munmap(0x7fc3fd400000, 138412032 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5136] <... chdir resumed>) = 0 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5139 [pid 5139] set_robust_list(0x555560e9f660, 24 [pid 5138] <... mmap resumed>) = 0x7fc3fd400000 [pid 5136] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5137] <... munmap resumed>) = 0 [pid 5139] <... set_robust_list resumed>) = 0 [pid 5138] 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 5136] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5139] chdir("./6" [pid 5136] exit_group(0) = ? [pid 5136] +++ exited with 0 +++ [pid 5137] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5139] <... chdir resumed>) = 0 [pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5139] setpgid(0, 0) = 0 [pid 5137] <... openat resumed>) = 5 [pid 5089] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5090] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] <... openat resumed>) = 3 [pid 5139] <... openat resumed>) = 3 [pid 5137] ioctl(5, LOOP_SET_FD, 4 [pid 5090] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] newfstatat(3, "", [pid 5137] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] <... openat resumed>) = 3 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5139] write(3, "1000", 4) = 4 [pid 5139] close(3) = 0 [pid 5137] ioctl(5, LOOP_CLR_FD [pid 5139] symlink("/dev/binderfs", "./binderfs" [pid 5089] getdents64(3, [pid 5139] <... symlink resumed>) = 0 [pid 5137] <... ioctl resumed>) = 0 [pid 5090] newfstatat(3, "", [pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5139] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5139] memfd_create("syzkaller", 0 [pid 5091] <... ioctl resumed>) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5139] <... memfd_create resumed>) = 4 [pid 5090] getdents64(3, [pid 5139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5137] ioctl(5, LOOP_SET_FD, 4 [pid 5139] <... mmap resumed>) = 0x7fc3fd400000 [pid 5137] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5139] 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 5138] <... write resumed>) = 524288 [pid 5137] close(5) = 0 [pid 5138] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5137] close(4 [pid 5138] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 5 [pid 5138] ioctl(5, LOOP_SET_FD, 4 [pid 5091] close(3) = 0 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5139] <... write resumed>) = 524288 [pid 5090] <... umount2 resumed>) = 0 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5140 ./strace-static-x86_64: Process 5140 attached [pid 5139] munmap(0x7fc3fd400000, 138412032 [pid 5140] set_robust_list(0x555560e9f660, 24 [pid 5139] <... munmap resumed>) = 0 [pid 5137] <... close resumed>) = 0 [pid 5140] <... set_robust_list resumed>) = 0 [pid 5140] chdir("./6") = 0 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5140] setpgid(0, 0) = 0 [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 113.596083][ T5138] loop1: detected capacity change from 0 to 1024 [pid 5139] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5140] <... openat resumed>) = 3 [pid 5139] <... openat resumed>) = 5 [pid 5138] <... ioctl resumed>) = 0 [pid 5090] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5139] ioctl(5, LOOP_SET_FD, 4 [pid 5138] close(4 [pid 5140] write(3, "1000", 4 [pid 5138] <... close resumed>) = 0 [pid 5137] exit_group(0 [pid 5090] newfstatat(AT_FDCWD, "./6/bus", [pid 5140] <... write resumed>) = 4 [pid 5140] close(3) = 0 [pid 5140] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5137] <... exit_group resumed>) = ? [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... umount2 resumed>) = 0 [pid 5140] <... openat resumed>) = 3 [pid 5140] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5090] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5140] <... ioctl resumed>) = 0 [pid 5140] memfd_create("syzkaller", 0) = 4 [pid 5138] close(5 [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5138] <... close resumed>) = 0 [pid 5140] <... mmap resumed>) = 0x7fc3fd400000 [pid 5138] mkdir("./bus", 0777) = 0 [pid 5137] +++ exited with 0 +++ [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5090] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5138] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5086] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5140] 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 5090] <... openat resumed>) = 4 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] newfstatat(4, "", [pid 5089] newfstatat(AT_FDCWD, "./7/bus", [pid 5086] unlink("./7/binderfs") = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] close(3) = 0 [pid 5086] rmdir("./7") = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] mkdir("./8", 0777) = 0 [ 113.639158][ T5139] loop2: detected capacity change from 0 to 1024 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5086] ioctl(3, LOOP_CLR_FD) = 0 [pid 5140] <... write resumed>) = 524288 [pid 5139] <... ioctl resumed>) = 0 [pid 5138] <... mount resumed>) = 0 [pid 5090] getdents64(4, [pid 5089] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5140] munmap(0x7fc3fd400000, 138412032 [pid 5139] close(4 [pid 5138] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5086] close(3 [pid 5140] <... munmap resumed>) = 0 [pid 5139] <... close resumed>) = 0 [pid 5138] <... openat resumed>) = 4 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5140] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5139] close(5 [pid 5138] chdir("./bus" [pid 5086] <... close resumed>) = 0 [pid 5140] <... openat resumed>) = 5 [pid 5139] <... close resumed>) = 0 [pid 5138] <... chdir resumed>) = 0 [pid 5139] mkdir("./bus", 0777 [pid 5138] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5140] ioctl(5, LOOP_SET_FD, 4 [pid 5139] <... mkdir resumed>) = 0 [pid 5138] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] getdents64(4, [pid 5089] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5138] exit_group(0 [pid 5090] close(4 [pid 5089] <... openat resumed>) = 4 [pid 5138] <... exit_group resumed>) = ? [pid 5090] <... close resumed>) = 0 [pid 5089] newfstatat(4, "", [pid 5090] rmdir("./6/bus" [pid 5139] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5090] <... rmdir resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5141 [pid 5090] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] getdents64(4, [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5089] getdents64(4, [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] unlink("./6/binderfs" [pid 5089] close(4 [pid 5090] <... unlink resumed>) = 0 [pid 5089] <... close resumed>) = 0 [pid 5090] getdents64(3, [pid 5089] rmdir("./7/bus"./strace-static-x86_64: Process 5141 attached [pid 5138] +++ exited with 0 +++ [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5087] --- 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 5089] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] close(3 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5090] <... close resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] rmdir("./6" [pid 5089] unlink("./7/binderfs" [pid 5087] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5087] newfstatat(3, "", [pid 5090] <... rmdir resumed>) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5141] set_robust_list(0x555560e9f660, 24 [pid 5089] <... unlink resumed>) = 0 [pid 5087] getdents64(3, [pid 5141] <... set_robust_list resumed>) = 0 [pid 5089] getdents64(3, [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5141] chdir("./8" [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5141] <... chdir resumed>) = 0 [pid 5089] close(3 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5089] <... close resumed>) = 0 [pid 5141] setpgid(0, 0 [pid 5089] rmdir("./7" [pid 5141] <... setpgid resumed>) = 0 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] mkdir("./7", 0777 [pid 5089] <... rmdir resumed>) = 0 [pid 5141] write(3, "1000", 4 [pid 5089] mkdir("./8", 0777 [pid 5141] <... write resumed>) = 4 [pid 5141] close(3 [pid 5089] <... mkdir resumed>) = 0 [pid 5141] <... close resumed>) = 0 [pid 5140] <... ioctl resumed>) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5141] symlink("/dev/binderfs", "./binderfs" [pid 5140] close(4 [pid 5089] <... openat resumed>) = 3 [pid 5141] <... symlink resumed>) = 0 [pid 5140] <... close resumed>) = 0 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5141] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5140] close(5 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5140] <... close resumed>) = 0 [pid 5141] <... openat resumed>) = 3 [pid 5140] mkdir("./bus", 0777) = 0 [pid 5141] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5141] memfd_create("syzkaller", 0 [pid 5140] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5141] <... memfd_create resumed>) = 4 [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [ 113.723123][ T5140] loop5: detected capacity change from 0 to 1024 [pid 5090] <... openat resumed>) = 3 [pid 5087] <... umount2 resumed>) = 0 [pid 5141] 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 5090] ioctl(3, LOOP_CLR_FD [pid 5140] <... mount resumed>) = 0 [pid 5140] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5140] chdir("./bus") = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5087] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./6/bus", [pid 5140] exit_group(0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5140] <... exit_group resumed>) = ? [pid 5087] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5141] <... write resumed>) = 524288 [pid 5140] +++ exited with 0 +++ [pid 5089] <... ioctl resumed>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5139] <... mount resumed>) = 0 [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5139] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5087] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5139] <... openat resumed>) = 4 [pid 5139] chdir("./bus" [pid 5087] <... openat resumed>) = 4 [pid 5091] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] newfstatat(4, "", [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] getdents64(4, [pid 5091] <... openat resumed>) = 3 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5091] newfstatat(3, "", [pid 5087] getdents64(4, [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5091] getdents64(3, [pid 5087] close(4 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5087] <... close resumed>) = 0 [pid 5087] rmdir("./6/bus" [pid 5091] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... rmdir resumed>) = 0 [pid 5139] <... chdir resumed>) = 0 [pid 5087] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5139] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5141] munmap(0x7fc3fd400000, 138412032 [pid 5087] unlink("./6/binderfs") = 0 [pid 5141] <... munmap resumed>) = 0 [pid 5139] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] <... ioctl resumed>) = 0 [pid 5087] getdents64(3, [pid 5089] close(3 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5139] exit_group(0 [pid 5087] close(3 [pid 5141] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5139] <... exit_group resumed>) = ? [pid 5089] <... close resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5141] <... openat resumed>) = 5 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] rmdir("./6") = 0 [pid 5141] ioctl(5, LOOP_SET_FD, 4 [pid 5139] +++ exited with 0 +++ [pid 5141] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5141] ioctl(5, LOOP_CLR_FD [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5139, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5141] <... ioctl resumed>) = 0 [pid 5088] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5087] mkdir("./7", 0777) = 0 [pid 5088] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5142 attached [pid 5091] <... umount2 resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5088] <... openat resumed>) = 3 [pid 5141] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5142 [pid 5088] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] getdents64(3, [pid 5141] close(5 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5141] <... close resumed>) = 0 [pid 5088] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5141] close(4 [pid 5087] <... openat resumed>) = 3 [pid 5087] ioctl(3, LOOP_CLR_FD) = 0 [pid 5087] close(3) = 0 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5142] set_robust_list(0x555560e9f660, 24 [pid 5091] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5142] <... set_robust_list resumed>) = 0 [pid 5090] close(3) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5143 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5144 [pid 5142] chdir("./8" [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5144 attached [pid 5142] <... chdir resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./6/bus", [pid 5088] <... umount2 resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5144] set_robust_list(0x555560e9f660, 24 [pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5144] <... set_robust_list resumed>) = 0 [pid 5142] <... prctl resumed>) = 0 [pid 5091] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5142] setpgid(0, 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5142] <... setpgid resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5143 attached [pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... openat resumed>) = 4 [pid 5144] chdir("./7" [pid 5143] set_robust_list(0x555560e9f660, 24 [pid 5142] <... openat resumed>) = 3 [pid 5091] newfstatat(4, "", [pid 5144] <... chdir resumed>) = 0 [pid 5088] newfstatat(AT_FDCWD, "./6/bus", [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5143] <... set_robust_list resumed>) = 0 [pid 5141] <... close resumed>) = 0 [pid 5091] getdents64(4, [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5144] <... prctl resumed>) = 0 [pid 5143] chdir("./7" [pid 5141] exit_group(0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] getdents64(4, [pid 5144] setpgid(0, 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5091] close(4 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5143] <... chdir resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5088] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5088] <... openat resumed>) = 4 [pid 5091] rmdir("./6/bus" [pid 5143] setpgid(0, 0) = 0 [pid 5142] write(3, "1000", 4 [pid 5141] <... exit_group resumed>) = ? [pid 5091] <... rmdir resumed>) = 0 [pid 5088] newfstatat(4, "", [pid 5142] <... write resumed>) = 4 [pid 5091] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5142] close(3 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5142] <... close resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5088] getdents64(4, [pid 5144] <... setpgid resumed>) = 0 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5142] symlink("/dev/binderfs", "./binderfs" [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5143] <... openat resumed>) = 3 [pid 5142] <... symlink resumed>) = 0 [pid 5091] unlink("./6/binderfs" [pid 5088] close(4 [pid 5143] write(3, "1000", 4) = 4 [pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5088] <... close resumed>) = 0 [pid 5143] close(3 [pid 5091] <... unlink resumed>) = 0 [pid 5088] rmdir("./6/bus" [pid 5143] <... close resumed>) = 0 [pid 5143] symlink("/dev/binderfs", "./binderfs" [pid 5088] <... rmdir resumed>) = 0 [pid 5144] <... openat resumed>) = 3 [pid 5143] <... symlink resumed>) = 0 [pid 5088] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5144] write(3, "1000", 4 [pid 5143] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] getdents64(3, [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5144] <... write resumed>) = 4 [pid 5088] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5144] close(3 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5144] <... close resumed>) = 0 [pid 5091] close(3 [pid 5088] unlink("./6/binderfs" [pid 5144] symlink("/dev/binderfs", "./binderfs" [pid 5091] <... close resumed>) = 0 [pid 5088] <... unlink resumed>) = 0 [pid 5142] <... openat resumed>) = 3 [pid 5143] <... openat resumed>) = 3 [pid 5091] rmdir("./6" [pid 5088] getdents64(3, [pid 5143] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = -1 ENXIO (No such device or address) [pid 5143] memfd_create("syzkaller", 0 [pid 5142] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] <... rmdir resumed>) = 0 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5144] <... symlink resumed>) = 0 [pid 5143] <... memfd_create resumed>) = 4 [pid 5142] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5088] close(3 [pid 5142] memfd_create("syzkaller", 0 [pid 5088] <... close resumed>) = 0 [pid 5088] rmdir("./6" [pid 5142] <... memfd_create resumed>) = 4 [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5144] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5142] <... mmap resumed>) = 0x7fc3fd400000 [pid 5088] mkdir("./7", 0777 [pid 5143] 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 5088] <... mkdir resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5144] <... openat resumed>) = 3 [pid 5091] mkdir("./7", 0777 [pid 5088] <... openat resumed>) = 3 [pid 5141] +++ exited with 0 +++ [pid 5091] <... mkdir resumed>) = 0 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5144] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5143] <... write resumed>) = 524288 [pid 5142] 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 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5144] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5091] <... openat resumed>) = 3 [pid 5086] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5086] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5086] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] unlink("./8/binderfs" [pid 5144] memfd_create("syzkaller", 0 [pid 5086] <... unlink resumed>) = 0 [pid 5086] getdents64(3, [pid 5144] <... memfd_create resumed>) = 4 [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] close(3) = 0 [pid 5086] rmdir("./8" [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5086] <... rmdir resumed>) = 0 [pid 5086] mkdir("./9", 0777 [pid 5144] <... mmap resumed>) = 0x7fc3fd400000 [pid 5086] <... mkdir resumed>) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5086] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5086] close(3) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555560e9f650) = 5145 ./strace-static-x86_64: Process 5145 attached [pid 5145] set_robust_list(0x555560e9f660, 24) = 0 [pid 5145] chdir("./9") = 0 [pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5145] setpgid(0, 0) = 0 [pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5144] 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 5143] munmap(0x7fc3fd400000, 138412032 [pid 5145] write(3, "1000", 4 [pid 5143] <... munmap resumed>) = 0 [pid 5145] <... write resumed>) = 4 [pid 5143] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5145] close(3 [pid 5143] <... openat resumed>) = 5 [pid 5145] <... close resumed>) = 0 [pid 5143] ioctl(5, LOOP_SET_FD, 4 [pid 5145] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5144] <... write resumed>) = 524288 [pid 5145] <... openat resumed>) = 3 [pid 5145] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = -1 ENXIO (No such device or address) [pid 5145] memfd_create("syzkaller", 0 [pid 5142] <... write resumed>) = 524288 [pid 5145] <... memfd_create resumed>) = 4 [pid 5145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5142] munmap(0x7fc3fd400000, 138412032 [pid 5145] <... mmap resumed>) = 0x7fc3fd400000 [pid 5145] 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 5144] munmap(0x7fc3fd400000, 138412032 [pid 5142] <... munmap resumed>) = 0 [pid 5142] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 5 [pid 5091] <... ioctl resumed>) = 0 [pid 5142] ioctl(5, LOOP_SET_FD, 4 [pid 5144] <... munmap resumed>) = 0 [pid 5144] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 5 [pid 5144] ioctl(5, LOOP_SET_FD, 4 [pid 5143] <... ioctl resumed>) = 0 [pid 5091] close(3) = 0 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555560e9f650) = 5146 ./strace-static-x86_64: Process 5146 attached [pid 5145] <... write resumed>) = 524288 [pid 5088] <... ioctl resumed>) = 0 [pid 5146] set_robust_list(0x555560e9f660, 24) = 0 [pid 5146] chdir("./7") = 0 [pid 5144] <... ioctl resumed>) = 0 [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5146] setpgid(0, 0) = 0 [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5144] close(4 [pid 5088] close(3 [pid 5144] <... close resumed>) = 0 [pid 5146] <... openat resumed>) = 3 [pid 5144] close(5 [pid 5142] <... ioctl resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5144] <... close resumed>) = 0 [pid 5142] close(4 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5144] mkdir("./bus", 0777 [pid 5145] munmap(0x7fc3fd400000, 138412032 [pid 5143] close(4 [pid 5142] <... close resumed>) = 0 [pid 5145] <... munmap resumed>) = 0 [pid 5143] <... close resumed>) = 0 [pid 5142] close(5 [pid 5143] close(5 [pid 5142] <... close resumed>) = 0 [pid 5144] <... mkdir resumed>) = 0 [pid 5143] <... close resumed>) = 0 [pid 5142] mkdir("./bus", 0777 [pid 5146] write(3, "1000", 4 [pid 5143] mkdir("./bus", 0777 [pid 5142] <... mkdir resumed>) = 0 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5143] <... mkdir resumed>) = 0 [pid 5146] <... write resumed>) = 4 [pid 5145] <... openat resumed>) = 5 [pid 5146] close(3 [ 114.015635][ T5142] loop3: detected capacity change from 0 to 1024 [ 114.025157][ T5143] loop1: detected capacity change from 0 to 1024 [ 114.034333][ T5144] loop4: detected capacity change from 0 to 1024 [pid 5144] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, ""./strace-static-x86_64: Process 5147 attached [pid 5146] <... close resumed>) = 0 [pid 5145] ioctl(5, LOOP_SET_FD, 4 [pid 5143] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5142] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5146] symlink("/dev/binderfs", "./binderfs" [pid 5145] <... ioctl resumed>) = 0 [pid 5147] set_robust_list(0x555560e9f660, 24 [pid 5146] <... symlink resumed>) = 0 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5147 [pid 5147] <... set_robust_list resumed>) = 0 [pid 5147] chdir("./7" [pid 5144] <... mount resumed>) = 0 [pid 5147] <... chdir resumed>) = 0 [pid 5144] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5146] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5144] <... openat resumed>) = 4 [pid 5147] <... prctl resumed>) = 0 [pid 5147] setpgid(0, 0 [pid 5146] <... openat resumed>) = 3 [pid 5144] chdir("./bus" [pid 5147] <... setpgid resumed>) = 0 [pid 5146] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5147] write(3, "1000", 4) = 4 [pid 5147] close(3) = 0 [pid 5147] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5147] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5147] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5144] <... chdir resumed>) = 0 [pid 5144] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5144] exit_group(0 [pid 5145] close(4) = 0 [pid 5145] close(5 [pid 5144] <... exit_group resumed>) = ? [pid 5142] <... mount resumed>) = 0 [pid 5145] <... close resumed>) = 0 [pid 5142] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5145] mkdir("./bus", 0777 [pid 5142] <... openat resumed>) = 4 [pid 5143] <... mount resumed>) = 0 [pid 5142] chdir("./bus") = 0 [pid 5143] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5142] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5145] <... mkdir resumed>) = 0 [pid 5144] +++ exited with 0 +++ [pid 5143] <... openat resumed>) = 4 [pid 5142] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5090] restart_syscall(<... resuming interrupted clone ...> [pid 5145] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5143] chdir("./bus" [pid 5142] exit_group(0 [pid 5143] <... chdir resumed>) = 0 [pid 5142] <... exit_group resumed>) = ? [pid 5090] <... restart_syscall resumed>) = 0 [pid 5142] +++ exited with 0 +++ [pid 5143] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5090] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5143] exit_group(0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5090] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5143] <... exit_group resumed>) = ? [pid 5090] <... openat resumed>) = 3 [pid 5089] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW [ 114.075814][ T5145] loop0: detected capacity change from 0 to 1024 [pid 5090] newfstatat(3, "", [pid 5143] +++ exited with 0 +++ [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] getdents64(3, [pid 5089] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] <... openat resumed>) = 3 [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5087] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5147] <... ioctl resumed>) = 0 [pid 5087] <... openat resumed>) = 3 [pid 5147] memfd_create("syzkaller", 0 [pid 5146] <... ioctl resumed>) = 0 [pid 5089] newfstatat(3, "", [pid 5087] newfstatat(3, "", [pid 5147] <... memfd_create resumed>) = 4 [pid 5146] memfd_create("syzkaller", 0 [pid 5090] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5146] <... memfd_create resumed>) = 4 [pid 5089] getdents64(3, [pid 5087] getdents64(3, [pid 5147] <... mmap resumed>) = 0x7fc3fd400000 [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5146] <... mmap resumed>) = 0x7fc3fd400000 [pid 5147] 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 5146] 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 5090] <... umount2 resumed>) = 0 [pid 5087] <... umount2 resumed>) = 0 [pid 5089] <... umount2 resumed>) = 0 [pid 5087] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./8/bus", [pid 5090] newfstatat(AT_FDCWD, "./7/bus", [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./7/bus", [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] <... openat resumed>) = 4 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... openat resumed>) = 4 [pid 5089] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] newfstatat(4, "", [pid 5089] getdents64(4, [pid 5087] <... openat resumed>) = 4 [pid 5087] newfstatat(4, "", [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] getdents64(4, [pid 5089] getdents64(4, [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] getdents64(4, [pid 5089] close(4 [pid 5087] getdents64(4, [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5089] <... close resumed>) = 0 [pid 5147] <... write resumed>) = 524288 [pid 5090] close(4 [pid 5089] rmdir("./8/bus" [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... close resumed>) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5087] getdents64(4, [pid 5147] munmap(0x7fc3fd400000, 138412032 [pid 5090] rmdir("./7/bus" [pid 5089] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5147] <... munmap resumed>) = 0 [pid 5090] <... rmdir resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 114.162578][ T5145] hfsplus: unable to set blocksize to 1024! [ 114.190653][ T5145] hfsplus: unable to find HFS+ superblock [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5147] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5146] <... write resumed>) = 524288 [pid 5090] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5147] <... openat resumed>) = 5 [pid 5146] munmap(0x7fc3fd400000, 138412032 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] close(4 [pid 5147] ioctl(5, LOOP_SET_FD, 4 [pid 5146] <... munmap resumed>) = 0 [pid 5090] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5089] unlink("./8/binderfs" [pid 5087] <... close resumed>) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... unlink resumed>) = 0 [pid 5087] rmdir("./7/bus" [pid 5090] unlink("./7/binderfs" [pid 5089] getdents64(3, [pid 5090] <... unlink resumed>) = 0 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] <... rmdir resumed>) = 0 [pid 5087] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] close(3 [pid 5090] getdents64(3, [pid 5089] <... close resumed>) = 0 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] rmdir("./8" [pid 5090] close(3 [pid 5089] <... rmdir resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5089] mkdir("./9", 0777) = 0 [pid 5090] rmdir("./7") = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] mkdir("./8", 0777 [pid 5087] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5146] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5090] <... mkdir resumed>) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5146] <... openat resumed>) = 5 [pid 5087] unlink("./7/binderfs" [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5087] <... unlink resumed>) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5146] ioctl(5, LOOP_SET_FD, 4 [pid 5087] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [ 114.209371][ T5147] loop2: detected capacity change from 0 to 1024 [pid 5087] close(3 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5089] <... ioctl resumed>) = 0 [pid 5145] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... openat resumed>) = 3 [pid 5089] close(3 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5089] <... close resumed>) = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] <... close resumed>) = 0 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5147] <... ioctl resumed>) = 0 [pid 5145] <... openat resumed>) = 4 [pid 5147] close(4 [pid 5145] ioctl(4, LOOP_CLR_FD) = 0 [pid 5147] <... close resumed>) = 0 [pid 5147] close(5) = 0 [pid 5145] close(4 [pid 5147] mkdir("./bus", 0777 [pid 5145] <... close resumed>) = 0 [pid 5087] rmdir("./7" [pid 5145] exit_group(0./strace-static-x86_64: Process 5148 attached [pid 5147] <... mkdir resumed>) = 0 [pid 5087] <... rmdir resumed>) = 0 [pid 5145] <... exit_group resumed>) = ? [pid 5087] mkdir("./8", 0777 [pid 5148] set_robust_list(0x555560e9f660, 24 [pid 5147] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5146] <... ioctl resumed>) = 0 [pid 5145] +++ exited with 0 +++ [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5148 [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5145, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5146] close(4 [pid 5087] <... mkdir resumed>) = 0 [pid 5146] <... close resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5146] close(5 [pid 5148] <... set_robust_list resumed>) = 0 [pid 5146] <... close resumed>) = 0 [pid 5087] <... openat resumed>) = 3 [pid 5146] mkdir("./bus", 0777 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5148] chdir("./9" [pid 5086] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5146] <... mkdir resumed>) = 0 [pid 5148] <... chdir resumed>) = 0 [pid 5087] <... ioctl resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5086] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] close(3 [pid 5086] <... openat resumed>) = 3 [pid 5148] <... prctl resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5086] newfstatat(3, "", [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5148] setpgid(0, 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5148] <... setpgid resumed>) = 0 [pid 5086] getdents64(3, [pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5146] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5086] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5148] <... openat resumed>) = 3 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./9/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5148] write(3, "1000", 4 [pid 5086] <... openat resumed>) = 4 [pid 5148] <... write resumed>) = 4 [pid 5148] close(3) = 0 [pid 5086] newfstatat(4, "", [pid 5148] symlink("/dev/binderfs", "./binderfs" [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5148] <... symlink resumed>) = 0 [pid 5086] getdents64(4, ./strace-static-x86_64: Process 5149 attached [pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5149] set_robust_list(0x555560e9f660, 24 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5149 [ 114.233225][ T5146] loop5: detected capacity change from 0 to 1024 [pid 5086] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5148] <... openat resumed>) = 3 [pid 5086] close(4) = 0 [pid 5086] rmdir("./9/bus" [pid 5149] <... set_robust_list resumed>) = 0 [pid 5149] chdir("./8" [pid 5148] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5147] <... mount resumed>) = 0 [pid 5086] <... rmdir resumed>) = 0 [pid 5149] <... chdir resumed>) = 0 [pid 5148] <... ioctl resumed>) = 0 [pid 5147] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5148] memfd_create("syzkaller", 0 [pid 5147] <... openat resumed>) = 4 [pid 5090] <... ioctl resumed>) = 0 [pid 5086] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5148] <... memfd_create resumed>) = 4 [pid 5147] chdir("./bus" [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] unlink("./9/binderfs" [pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5086] <... unlink resumed>) = 0 [pid 5148] <... mmap resumed>) = 0x7fc3fd400000 [pid 5147] <... chdir resumed>) = 0 [pid 5086] getdents64(3, [pid 5147] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5147] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5086] close(3 [pid 5147] exit_group(0 [pid 5086] <... close resumed>) = 0 [pid 5147] <... exit_group resumed>) = ? [pid 5086] rmdir("./9" [pid 5148] 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 5147] +++ exited with 0 +++ [pid 5086] <... rmdir resumed>) = 0 [pid 5149] <... prctl resumed>) = 0 [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5147, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5086] mkdir("./10", 0777) = 0 [pid 5149] setpgid(0, 0) = 0 [pid 5146] <... mount resumed>) = 0 [pid 5146] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5088] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5146] <... openat resumed>) = 4 [pid 5149] <... openat resumed>) = 3 [pid 5146] chdir("./bus" [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5146] <... chdir resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5086] <... openat resumed>) = 3 [pid 5146] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5088] newfstatat(3, "", [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... ioctl resumed>) = 0 [pid 5149] write(3, "1000", 4 [pid 5146] exit_group(0) = ? [pid 5149] <... write resumed>) = 4 [pid 5149] close(3 [pid 5148] <... write resumed>) = 524288 [pid 5146] +++ exited with 0 +++ [pid 5088] getdents64(3, [pid 5086] close(3 [pid 5149] <... close resumed>) = 0 [pid 5091] --- 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 5149] symlink("/dev/binderfs", "./binderfs" [pid 5086] <... close resumed>) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5149] <... symlink resumed>) = 0 [pid 5091] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5149] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5091] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5090] close(3 [pid 5088] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5149] <... openat resumed>) = 3 [pid 5090] <... close resumed>) = 0 [pid 5091] newfstatat(3, "", [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5149] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] getdents64(3, [pid 5149] <... ioctl resumed>) = 0 [pid 5149] memfd_create("syzkaller", 0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5149] <... memfd_create resumed>) = 4 [pid 5091] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5088] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 5150 attached [pid 5149] 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 5091] <... umount2 resumed>) = 0 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5150 [pid 5088] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5151 [pid 5150] set_robust_list(0x555560e9f660, 24./strace-static-x86_64: Process 5151 attached ) = 0 [pid 5091] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] newfstatat(AT_FDCWD, "./7/bus", [pid 5151] set_robust_list(0x555560e9f660, 24) = 0 [pid 5150] chdir("./8" [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5151] chdir("./10" [pid 5150] <... chdir resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./7/bus", [pid 5151] <... chdir resumed>) = 0 [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5150] <... prctl resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5151] <... prctl resumed>) = 0 [pid 5150] setpgid(0, 0 [pid 5088] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5151] setpgid(0, 0 [pid 5150] <... setpgid resumed>) = 0 [pid 5088] <... openat resumed>) = 4 [pid 5151] <... setpgid resumed>) = 0 [pid 5088] newfstatat(4, "", [pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5151] <... openat resumed>) = 3 [pid 5148] munmap(0x7fc3fd400000, 138412032 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5151] write(3, "1000", 4 [pid 5150] <... openat resumed>) = 3 [pid 5148] <... munmap resumed>) = 0 [pid 5088] getdents64(4, [pid 5151] <... write resumed>) = 4 [pid 5150] write(3, "1000", 4 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5151] close(3 [pid 5150] <... write resumed>) = 4 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] getdents64(4, [pid 5151] <... close resumed>) = 0 [pid 5148] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5151] symlink("/dev/binderfs", "./binderfs" [pid 5150] close(3 [pid 5148] <... openat resumed>) = 5 [pid 5088] close(4 [pid 5151] <... symlink resumed>) = 0 [pid 5148] ioctl(5, LOOP_SET_FD, 4 [pid 5091] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5150] <... close resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5151] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5150] symlink("/dev/binderfs", "./binderfs" [pid 5149] <... write resumed>) = 524288 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5151] <... openat resumed>) = 3 [pid 5150] <... symlink resumed>) = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5151] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5150] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5151] <... ioctl resumed>) = 0 [pid 5091] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5150] <... ioctl resumed>) = 0 [pid 5091] <... openat resumed>) = 4 [pid 5151] memfd_create("syzkaller", 0 [pid 5150] memfd_create("syzkaller", 0 [pid 5091] newfstatat(4, "", [pid 5151] <... memfd_create resumed>) = 4 [pid 5150] <... memfd_create resumed>) = 4 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] rmdir("./7/bus" [pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] getdents64(4, [pid 5151] <... mmap resumed>) = 0x7fc3fd400000 [pid 5150] <... mmap resumed>) = 0x7fc3fd400000 [pid 5149] munmap(0x7fc3fd400000, 138412032 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] <... rmdir resumed>) = 0 [pid 5151] 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 5150] 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 5149] <... munmap resumed>) = 0 [pid 5091] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5091] close(4) = 0 [pid 5091] rmdir("./7/bus" [pid 5088] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5148] <... ioctl resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5148] close(4) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5151] <... write resumed>) = 524288 [pid 5149] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5148] close(5 [pid 5088] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5148] <... close resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5148] mkdir("./bus", 0777 [pid 5088] unlink("./7/binderfs" [pid 5149] <... openat resumed>) = 5 [pid 5091] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5149] ioctl(5, LOOP_SET_FD, 4 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... unlink resumed>) = 0 [pid 5148] <... mkdir resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5088] getdents64(3, [pid 5150] <... write resumed>) = 524288 [pid 5148] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] close(3 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] <... close resumed>) = 0 [pid 5151] munmap(0x7fc3fd400000, 138412032 [pid 5091] unlink("./7/binderfs" [pid 5088] rmdir("./7" [pid 5151] <... munmap resumed>) = 0 [pid 5150] munmap(0x7fc3fd400000, 138412032 [pid 5091] <... unlink resumed>) = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5150] <... munmap resumed>) = 0 [pid 5091] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5091] close(3) = 0 [pid 5091] rmdir("./7" [pid 5088] mkdir("./8", 0777 [pid 5091] <... rmdir resumed>) = 0 [pid 5091] mkdir("./8", 0777) = 0 [pid 5088] <... mkdir resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 5151] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 5150] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5088] <... openat resumed>) = 3 [pid 5151] ioctl(5, LOOP_CLR_FD [pid 5150] <... openat resumed>) = 5 [pid 5091] <... openat resumed>) = 3 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5151] <... ioctl resumed>) = 0 [ 114.380505][ T5148] loop3: detected capacity change from 0 to 1024 [ 114.418914][ T5149] loop1: detected capacity change from 0 to 1024 [pid 5150] ioctl(5, LOOP_SET_FD, 4 [pid 5149] <... ioctl resumed>) = 0 [pid 5149] close(4 [pid 5151] ioctl(5, LOOP_SET_FD, 4 [pid 5149] <... close resumed>) = 0 [pid 5151] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5149] close(5 [pid 5151] close(5 [pid 5149] <... close resumed>) = 0 [pid 5151] <... close resumed>) = 0 [pid 5149] mkdir("./bus", 0777 [pid 5151] close(4 [pid 5149] <... mkdir resumed>) = 0 [pid 5149] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5151] <... close resumed>) = 0 [pid 5150] <... ioctl resumed>) = 0 [pid 5150] close(4) = 0 [pid 5150] close(5) = 0 [pid 5151] exit_group(0 [pid 5150] mkdir("./bus", 0777 [pid 5088] <... ioctl resumed>) = 0 [pid 5148] <... mount resumed>) = 0 [pid 5148] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5088] close(3 [pid 5150] <... mkdir resumed>) = 0 [pid 5148] <... openat resumed>) = 4 [pid 5151] <... exit_group resumed>) = ? [pid 5149] <... mount resumed>) = 0 [ 114.439539][ T5150] loop4: detected capacity change from 0 to 1024 [ 114.477962][ T5081] I/O error, dev loop5, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [pid 5148] chdir("./bus" [pid 5091] <... ioctl resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5149] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5148] <... chdir resumed>) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5152 attached [pid 5151] +++ exited with 0 +++ [pid 5149] <... openat resumed>) = 4 [pid 5148] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5152] set_robust_list(0x555560e9f660, 24 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5152 [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5152] <... set_robust_list resumed>) = 0 [pid 5150] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5149] chdir("./bus" [pid 5148] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5152] chdir("./8" [pid 5149] <... chdir resumed>) = 0 [pid 5148] exit_group(0 [pid 5091] close(3 [pid 5086] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5152] <... chdir resumed>) = 0 [pid 5149] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5148] <... exit_group resumed>) = ? [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5152] <... prctl resumed>) = 0 [pid 5152] setpgid(0, 0 [pid 5149] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5148] +++ exited with 0 +++ [pid 5091] <... close resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5152] <... setpgid resumed>) = 0 [pid 5089] --- 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 5086] newfstatat(3, "", [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5149] exit_group(0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] getdents64(3, [pid 5152] <... openat resumed>) = 3 [pid 5149] <... exit_group resumed>) = ? [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 3 entries */, 32768) = 80 ./strace-static-x86_64: Process 5153 attached [pid 5153] set_robust_list(0x555560e9f660, 24 [pid 5150] <... mount resumed>) = 0 [pid 5153] <... set_robust_list resumed>) = 0 [pid 5153] chdir("./8" [pid 5150] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5150] chdir("./bus") = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5153] <... chdir resumed>) = 0 [pid 5150] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5149] +++ exited with 0 +++ [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5153 [pid 5086] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5152] write(3, "1000", 4 [pid 5150] exit_group(0 [pid 5089] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5087] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5087] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5152] <... write resumed>) = 4 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... openat resumed>) = 3 [pid 5089] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] newfstatat(3, "", [pid 5152] close(3 [pid 5086] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5153] <... prctl resumed>) = 0 [pid 5152] <... close resumed>) = 0 [pid 5150] <... exit_group resumed>) = ? [pid 5089] <... openat resumed>) = 3 [pid 5087] getdents64(3, [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5153] setpgid(0, 0 [pid 5152] symlink("/dev/binderfs", "./binderfs" [pid 5150] +++ exited with 0 +++ [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5153] <... setpgid resumed>) = 0 [pid 5087] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5152] <... symlink resumed>) = 0 [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5089] newfstatat(3, "", [pid 5087] <... umount2 resumed>) = 0 [pid 5086] unlink("./10/binderfs" [pid 5090] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5153] write(3, "1000", 4 [pid 5090] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] getdents64(3, [pid 5087] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5153] <... write resumed>) = 4 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5153] close(3 [pid 5087] newfstatat(AT_FDCWD, "./8/bus", [pid 5086] <... unlink resumed>) = 0 [pid 5153] <... close resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5153] symlink("/dev/binderfs", "./binderfs" [pid 5090] newfstatat(3, "", [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5087] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] getdents64(3, [pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5153] <... symlink resumed>) = 0 [pid 5152] <... openat resumed>) = 3 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] getdents64(3, [pid 5153] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5087] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] close(3 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5152] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5090] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... openat resumed>) = 4 [pid 5086] <... close resumed>) = 0 [pid 5087] newfstatat(4, "", [pid 5086] rmdir("./10" [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5153] <... openat resumed>) = 3 [pid 5087] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5087] getdents64(4, [pid 5086] <... rmdir resumed>) = 0 [pid 5153] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] mkdir("./11", 0777 [pid 5087] close(4 [pid 5152] memfd_create("syzkaller", 0 [pid 5153] <... ioctl resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5153] memfd_create("syzkaller", 0 [pid 5087] rmdir("./8/bus" [pid 5152] <... memfd_create resumed>) = 4 [pid 5087] <... rmdir resumed>) = 0 [pid 5086] <... mkdir resumed>) = 0 [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5153] <... memfd_create resumed>) = 4 [pid 5152] <... mmap resumed>) = 0x7fc3fd400000 [pid 5087] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... openat resumed>) = 3 [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... ioctl resumed>) = 0 [pid 5087] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5153] <... mmap resumed>) = 0x7fc3fd400000 [pid 5087] unlink("./8/binderfs") = 0 [pid 5086] close(3 [pid 5087] getdents64(3, [pid 5086] <... close resumed>) = 0 [pid 5090] <... umount2 resumed>) = 0 [pid 5089] <... umount2 resumed>) = 0 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5153] 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 5152] 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 5087] close(3 [pid 5090] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5154 ./strace-static-x86_64: Process 5154 attached [pid 5154] set_robust_list(0x555560e9f660, 24) = 0 [pid 5087] <... close resumed>) = 0 [pid 5153] <... write resumed>) = 524288 [pid 5154] chdir("./11" [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] rmdir("./8" [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] newfstatat(AT_FDCWD, "./8/bus", [pid 5089] newfstatat(AT_FDCWD, "./9/bus", [pid 5087] <... rmdir resumed>) = 0 [pid 5154] <... chdir resumed>) = 0 [pid 5087] mkdir("./9", 0777 [pid 5154] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5087] <... mkdir resumed>) = 0 [pid 5154] <... prctl resumed>) = 0 [pid 5154] setpgid(0, 0) = 0 [pid 5154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5154] <... openat resumed>) = 3 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5090] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5154] write(3, "1000", 4 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... openat resumed>) = 3 [pid 5089] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5154] <... write resumed>) = 4 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5154] close(3 [pid 5089] <... openat resumed>) = 4 [pid 5087] <... ioctl resumed>) = 0 [pid 5154] <... close resumed>) = 0 [pid 5153] munmap(0x7fc3fd400000, 138412032 [pid 5087] close(3 [pid 5090] <... openat resumed>) = 4 [pid 5154] symlink("/dev/binderfs", "./binderfs" [pid 5153] <... munmap resumed>) = 0 [pid 5090] newfstatat(4, "", [pid 5089] newfstatat(4, "", [pid 5087] <... close resumed>) = 0 [pid 5154] <... symlink resumed>) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5089] getdents64(4, [pid 5090] getdents64(4, [pid 5154] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5153] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5152] <... write resumed>) = 524288 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5152] munmap(0x7fc3fd400000, 138412032 [pid 5090] getdents64(4, [pid 5154] <... openat resumed>) = 3 [pid 5153] <... openat resumed>) = 5 [pid 5152] <... munmap resumed>) = 0 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5089] getdents64(4, [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5156 [pid 5090] close(4./strace-static-x86_64: Process 5156 attached [pid 5152] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5090] <... close resumed>) = 0 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] rmdir("./8/bus" [pid 5089] close(4 [pid 5153] ioctl(5, LOOP_SET_FD, 4 [pid 5156] set_robust_list(0x555560e9f660, 24 [pid 5152] <... openat resumed>) = 5 [pid 5090] <... rmdir resumed>) = 0 [pid 5089] <... close resumed>) = 0 [pid 5156] <... set_robust_list resumed>) = 0 [pid 5152] ioctl(5, LOOP_SET_FD, 4 [pid 5090] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] rmdir("./9/bus" [pid 5154] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... rmdir resumed>) = 0 [pid 5154] <... ioctl resumed>) = 0 [pid 5154] memfd_create("syzkaller", 0) = 4 [pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5156] chdir("./9" [pid 5154] 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 5090] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5089] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5156] <... chdir resumed>) = 0 [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5156] <... prctl resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5156] setpgid(0, 0 [pid 5089] newfstatat(AT_FDCWD, "./9/binderfs", [pid 5156] <... setpgid resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] unlink("./8/binderfs" [pid 5089] unlink("./9/binderfs" [pid 5090] <... unlink resumed>) = 0 [pid 5089] <... unlink resumed>) = 0 [pid 5089] getdents64(3, [pid 5156] <... openat resumed>) = 3 [pid 5152] <... ioctl resumed>) = 0 [pid 5090] getdents64(3, [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5156] write(3, "1000", 4 [pid 5153] <... ioctl resumed>) = 0 [pid 5152] close(4 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] close(3 [pid 5156] <... write resumed>) = 4 [pid 5089] <... close resumed>) = 0 [pid 5156] close(3 [pid 5090] close(3 [pid 5089] rmdir("./9" [pid 5152] <... close resumed>) = 0 [pid 5156] <... close resumed>) = 0 [pid 5156] symlink("/dev/binderfs", "./binderfs" [pid 5153] close(4 [pid 5152] close(5 [pid 5090] <... close resumed>) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5152] <... close resumed>) = 0 [pid 5090] rmdir("./8" [pid 5089] mkdir("./10", 0777 [pid 5153] <... close resumed>) = 0 [pid 5153] close(5) = 0 [pid 5153] mkdir("./bus", 0777) = 0 [pid 5090] <... rmdir resumed>) = 0 [pid 5089] <... mkdir resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5153] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5156] <... symlink resumed>) = 0 [pid 5152] mkdir("./bus", 0777 [pid 5090] mkdir("./9", 0777 [pid 5089] <... openat resumed>) = 3 [pid 5154] <... write resumed>) = 524288 [pid 5154] munmap(0x7fc3fd400000, 138412032 [pid 5090] <... mkdir resumed>) = 0 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5152] <... mkdir resumed>) = 0 [ 114.706187][ T5153] loop5: detected capacity change from 0 to 1024 [ 114.714464][ T5152] loop2: detected capacity change from 0 to 1024 [pid 5154] <... munmap resumed>) = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5152] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5153] <... mount resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5154] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5153] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5154] <... openat resumed>) = 5 [pid 5153] <... openat resumed>) = 4 [pid 5090] <... ioctl resumed>) = 0 [pid 5154] ioctl(5, LOOP_SET_FD, 4 [pid 5153] chdir("./bus" [pid 5090] close(3 [pid 5156] <... openat resumed>) = 3 [pid 5090] <... close resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5153] <... chdir resumed>) = 0 [pid 5154] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5156] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5154] ioctl(5, LOOP_CLR_FD [pid 5153] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5156] memfd_create("syzkaller", 0 [pid 5154] <... ioctl resumed>) = 0 [pid 5153] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5157 ./strace-static-x86_64: Process 5157 attached [pid 5156] <... memfd_create resumed>) = 4 [pid 5153] exit_group(0 [pid 5157] set_robust_list(0x555560e9f660, 24 [pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5153] <... exit_group resumed>) = ? [pid 5156] <... mmap resumed>) = 0x7fc3fd400000 [pid 5154] ioctl(5, LOOP_SET_FD, 4 [pid 5157] <... set_robust_list resumed>) = 0 [pid 5156] 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 5154] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5157] chdir("./9" [pid 5154] close(5 [pid 5157] <... chdir resumed>) = 0 [pid 5154] <... close resumed>) = 0 [pid 5154] close(4) = 0 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5153] +++ exited with 0 +++ [pid 5157] <... prctl resumed>) = 0 [pid 5157] setpgid(0, 0 [pid 5152] <... mount resumed>) = 0 [pid 5157] <... setpgid resumed>) = 0 [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5157] write(3, "1000", 4) = 4 [pid 5157] close(3) = 0 [pid 5157] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5154] exit_group(0) = ? [pid 5157] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5152] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5156] <... write resumed>) = 524288 [pid 5152] <... openat resumed>) = 4 [pid 5091] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5152] chdir("./bus" [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5152] <... chdir resumed>) = 0 [pid 5091] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5157] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] <... openat resumed>) = 3 [pid 5157] <... ioctl resumed>) = 0 [pid 5091] newfstatat(3, "", [pid 5157] memfd_create("syzkaller", 0 [pid 5156] munmap(0x7fc3fd400000, 138412032 [pid 5152] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5157] <... memfd_create resumed>) = 4 [pid 5156] <... munmap resumed>) = 0 [pid 5154] +++ exited with 0 +++ [pid 5152] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] getdents64(3, [pid 5089] <... ioctl resumed>) = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5154, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [ 114.808617][ T5104] I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5156] <... openat resumed>) = 5 [pid 5152] exit_group(0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5156] ioctl(5, LOOP_SET_FD, 4 [pid 5152] <... exit_group resumed>) = ? [pid 5091] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5157] <... mmap resumed>) = 0x7fc3fd400000 [pid 5089] close(3 [pid 5157] 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 5089] <... close resumed>) = 0 [pid 5152] +++ exited with 0 +++ [pid 5086] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5156] <... ioctl resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5086] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5086] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 5158 attached [pid 5086] getdents64(3, [pid 5158] set_robust_list(0x555560e9f660, 24 [pid 5156] close(4 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5158 [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5158] <... set_robust_list resumed>) = 0 [pid 5156] <... close resumed>) = 0 [pid 5088] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5158] chdir("./10" [pid 5156] close(5 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5158] <... chdir resumed>) = 0 [pid 5088] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] newfstatat(AT_FDCWD, "./11/binderfs", [pid 5158] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5156] <... close resumed>) = 0 [pid 5158] <... prctl resumed>) = 0 [pid 5156] mkdir("./bus", 0777 [pid 5088] <... openat resumed>) = 3 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5156] <... mkdir resumed>) = 0 [pid 5086] unlink("./11/binderfs" [pid 5088] newfstatat(3, "", [pid 5158] setpgid(0, 0 [pid 5086] <... unlink resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, [pid 5158] <... setpgid resumed>) = 0 [pid 5156] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5088] getdents64(3, [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] close(3 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... umount2 resumed>) = 0 [pid 5088] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... close resumed>) = 0 [pid 5086] rmdir("./11") = 0 [pid 5086] mkdir("./12", 0777) = 0 [pid 5158] <... openat resumed>) = 3 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5088] <... umount2 resumed>) = 0 [pid 5086] ioctl(3, LOOP_CLR_FD) = 0 [pid 5086] close(3) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5159 attached [pid 5091] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5159 [pid 5159] set_robust_list(0x555560e9f660, 24 [pid 5091] newfstatat(AT_FDCWD, "./8/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5159] <... set_robust_list resumed>) = 0 [pid 5088] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5159] chdir("./12" [pid 5157] <... write resumed>) = 524288 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] newfstatat(AT_FDCWD, "./8/bus", [ 114.857626][ T5156] loop1: detected capacity change from 0 to 1024 [pid 5157] munmap(0x7fc3fd400000, 138412032 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5159] <... chdir resumed>) = 0 [pid 5158] write(3, "1000", 4 [pid 5157] <... munmap resumed>) = 0 [pid 5156] <... mount resumed>) = 0 [pid 5091] <... openat resumed>) = 4 [pid 5088] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5158] <... write resumed>) = 4 [pid 5156] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5159] <... prctl resumed>) = 0 [pid 5159] setpgid(0, 0 [pid 5158] close(3 [pid 5156] <... openat resumed>) = 4 [pid 5091] newfstatat(4, "", [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5159] <... setpgid resumed>) = 0 [pid 5158] <... close resumed>) = 0 [pid 5156] chdir("./bus" [pid 5088] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5156] <... chdir resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5158] symlink("/dev/binderfs", "./binderfs" [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5156] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5157] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5156] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5158] <... symlink resumed>) = 0 [pid 5157] <... openat resumed>) = 5 [pid 5157] ioctl(5, LOOP_SET_FD, 4 [pid 5156] exit_group(0 [pid 5159] <... openat resumed>) = 3 [pid 5158] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] getdents64(4, [pid 5088] <... openat resumed>) = 4 [pid 5157] <... ioctl resumed>) = 0 [pid 5158] <... openat resumed>) = 3 [pid 5157] close(4 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] newfstatat(4, "", [pid 5157] <... close resumed>) = 0 [pid 5156] <... exit_group resumed>) = ? [pid 5159] write(3, "1000", 4 [pid 5158] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5157] close(5 [pid 5091] getdents64(4, [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5157] <... close resumed>) = 0 [pid 5088] getdents64(4, [pid 5158] <... ioctl resumed>) = 0 [pid 5157] mkdir("./bus", 0777 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5159] <... write resumed>) = 4 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5159] close(3 [pid 5158] memfd_create("syzkaller", 0 [pid 5157] <... mkdir resumed>) = 0 [pid 5091] close(4 [pid 5088] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5158] <... memfd_create resumed>) = 4 [pid 5157] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5156] +++ exited with 0 +++ [pid 5091] <... close resumed>) = 0 [pid 5088] close(4 [pid 5159] <... close resumed>) = 0 [pid 5158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5159] symlink("/dev/binderfs", "./binderfs" [pid 5158] <... mmap resumed>) = 0x7fc3fd400000 [pid 5091] rmdir("./8/bus" [pid 5088] <... close resumed>) = 0 [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5088] rmdir("./8/bus" [pid 5087] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5087] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5087] newfstatat(3, "", [pid 5159] <... symlink resumed>) = 0 [pid 5158] 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 5157] <... mount resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5157] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5087] getdents64(3, [pid 5157] <... openat resumed>) = 4 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5157] chdir("./bus" [pid 5087] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5157] <... chdir resumed>) = 0 [pid 5157] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5091] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5157] exit_group(0 [pid 5087] <... umount2 resumed>) = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5088] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] unlink("./8/binderfs") = 0 [pid 5088] getdents64(3, [pid 5157] <... exit_group resumed>) = ? [pid 5091] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5159] <... openat resumed>) = 3 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 114.927176][ T5157] loop4: detected capacity change from 0 to 1024 [pid 5091] unlink("./8/binderfs" [pid 5087] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5159] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5158] <... write resumed>) = 524288 [pid 5091] <... unlink resumed>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] getdents64(3, [pid 5087] newfstatat(AT_FDCWD, "./9/bus", [pid 5157] +++ exited with 0 +++ [pid 5088] close(3) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5088] rmdir("./8" [pid 5159] memfd_create("syzkaller", 0 [pid 5090] restart_syscall(<... resuming interrupted clone ...> [pid 5091] close(3 [pid 5087] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5159] <... memfd_create resumed>) = 4 [pid 5158] munmap(0x7fc3fd400000, 138412032 [pid 5091] <... close resumed>) = 0 [pid 5090] <... restart_syscall resumed>) = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] rmdir("./8" [pid 5088] mkdir("./9", 0777 [pid 5087] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... mkdir resumed>) = 0 [pid 5087] <... openat resumed>) = 4 [pid 5090] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] newfstatat(4, "", [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5090] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5158] <... munmap resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5088] <... openat resumed>) = 3 [pid 5087] getdents64(4, [pid 5088] ioctl(3, LOOP_CLR_FD) = 0 [pid 5088] close(3) = 0 [pid 5090] newfstatat(3, "", [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5158] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] <... rmdir resumed>) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] getdents64(3, [pid 5087] getdents64(4, [pid 5159] <... mmap resumed>) = 0x7fc3fd400000 [pid 5158] <... openat resumed>) = 5 [pid 5091] mkdir("./9", 0777 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5159] 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 5158] ioctl(5, LOOP_SET_FD, 4 [pid 5091] <... mkdir resumed>) = 0 [pid 5090] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] close(4./strace-static-x86_64: Process 5160 attached [pid 5160] set_robust_list(0x555560e9f660, 24 [pid 5158] <... ioctl resumed>) = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5160 [pid 5087] <... close resumed>) = 0 [pid 5160] <... set_robust_list resumed>) = 0 [pid 5159] <... write resumed>) = 524288 [pid 5087] rmdir("./9/bus" [pid 5160] chdir("./9" [pid 5090] <... umount2 resumed>) = 0 [pid 5087] <... rmdir resumed>) = 0 [pid 5090] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5160] <... chdir resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] newfstatat(AT_FDCWD, "./9/bus", [pid 5091] <... openat resumed>) = 3 [pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5160] <... prctl resumed>) = 0 [pid 5159] munmap(0x7fc3fd400000, 138412032 [pid 5158] close(4 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5087] newfstatat(AT_FDCWD, "./9/binderfs", [pid 5160] setpgid(0, 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5160] <... setpgid resumed>) = 0 [pid 5087] unlink("./9/binderfs" [pid 5090] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5087] <... unlink resumed>) = 0 [pid 5090] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5160] <... openat resumed>) = 3 [pid 5087] getdents64(3, [pid 5090] getdents64(4, [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5160] write(3, "1000", 4 [pid 5087] close(3 [pid 5160] <... write resumed>) = 4 [pid 5160] close(3 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5087] <... close resumed>) = 0 [pid 5160] <... close resumed>) = 0 [pid 5160] symlink("/dev/binderfs", "./binderfs" [pid 5090] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] close(4) = 0 [pid 5090] rmdir("./9/bus" [pid 5160] <... symlink resumed>) = 0 [pid 5159] <... munmap resumed>) = 0 [pid 5158] <... close resumed>) = 0 [pid 5090] <... rmdir resumed>) = 0 [pid 5087] rmdir("./9" [pid 5158] close(5) = 0 [pid 5158] mkdir("./bus", 0777 [pid 5090] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] <... rmdir resumed>) = 0 [pid 5090] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] unlink("./9/binderfs" [pid 5160] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5158] <... mkdir resumed>) = 0 [pid 5090] <... unlink resumed>) = 0 [pid 5087] mkdir("./10", 0777 [pid 5090] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] close(3 [pid 5160] <... openat resumed>) = 3 [pid 5159] <... openat resumed>) = 5 [pid 5090] <... close resumed>) = 0 [pid 5159] ioctl(5, LOOP_SET_FD, 4 [pid 5090] rmdir("./9" [pid 5159] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5159] ioctl(5, LOOP_CLR_FD [pid 5158] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5160] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5090] <... rmdir resumed>) = 0 [pid 5160] <... ioctl resumed>) = 0 [pid 5159] <... ioctl resumed>) = 0 [pid 5090] mkdir("./10", 0777 [pid 5087] <... mkdir resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5090] <... mkdir resumed>) = 0 [pid 5159] ioctl(5, LOOP_SET_FD, 4 [pid 5087] <... openat resumed>) = 3 [pid 5159] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5159] close(5) = 0 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5159] close(4 [pid 5158] <... mount resumed>) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5160] memfd_create("syzkaller", 0 [pid 5090] <... openat resumed>) = 3 [pid 5158] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5160] <... memfd_create resumed>) = 4 [pid 5158] <... openat resumed>) = 4 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [ 115.027793][ T5158] loop3: detected capacity change from 0 to 1024 [pid 5158] chdir("./bus" [pid 5160] 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 5158] <... chdir resumed>) = 0 [pid 5158] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5158] exit_group(0 [pid 5159] <... close resumed>) = 0 [pid 5158] <... exit_group resumed>) = ? [pid 5159] exit_group(0) = ? [pid 5091] <... ioctl resumed>) = 0 [pid 5159] +++ exited with 0 +++ [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5086] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5086] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5086] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] unlink("./12/binderfs" [pid 5158] +++ exited with 0 +++ [pid 5086] <... unlink resumed>) = 0 [pid 5086] getdents64(3, [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5158, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5160] <... write resumed>) = 524288 [pid 5089] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] close(3 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... close resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] rmdir("./12" [pid 5089] <... openat resumed>) = 3 [pid 5086] <... rmdir resumed>) = 0 [pid 5089] newfstatat(3, "", [pid 5160] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] mkdir("./13", 0777) = 0 [pid 5160] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5091] close(3 [pid 5089] getdents64(3, [pid 5087] <... ioctl resumed>) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5091] <... close resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5087] close(3 [pid 5086] <... ioctl resumed>) = 0 [pid 5160] <... openat resumed>) = 5 [pid 5086] close(3 [pid 5160] ioctl(5, LOOP_SET_FD, 4 [pid 5090] <... ioctl resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555560e9f650) = 5163 ./strace-static-x86_64: Process 5163 attached [pid 5163] set_robust_list(0x555560e9f660, 24 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5161 [pid 5163] <... set_robust_list resumed>) = 0 [pid 5163] chdir("./13") = 0 [pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5162 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5090] close(3 [pid 5089] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5163] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5162 attached [pid 5163] setpgid(0, 0 [pid 5090] <... close resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5161 attached [pid 5160] <... ioctl resumed>) = 0 [pid 5162] set_robust_list(0x555560e9f660, 24 [pid 5163] <... setpgid resumed>) = 0 [pid 5161] set_robust_list(0x555560e9f660, 24 [pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5160] close(4 [pid 5162] <... set_robust_list resumed>) = 0 [pid 5161] <... set_robust_list resumed>) = 0 [pid 5163] <... openat resumed>) = 3 [pid 5160] <... close resumed>) = 0 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5164 ./strace-static-x86_64: Process 5164 attached [pid 5162] chdir("./10" [pid 5161] chdir("./9" [pid 5164] set_robust_list(0x555560e9f660, 24 [pid 5160] close(5 [pid 5164] <... set_robust_list resumed>) = 0 [pid 5164] chdir("./10" [pid 5162] <... chdir resumed>) = 0 [pid 5160] <... close resumed>) = 0 [pid 5164] <... chdir resumed>) = 0 [pid 5160] mkdir("./bus", 0777 [pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5164] setpgid(0, 0) = 0 [pid 5162] <... prctl resumed>) = 0 [pid 5162] setpgid(0, 0 [pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5162] <... setpgid resumed>) = 0 [pid 5160] <... mkdir resumed>) = 0 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5164] <... openat resumed>) = 3 [pid 5160] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5161] <... chdir resumed>) = 0 [pid 5164] write(3, "1000", 4) = 4 [pid 5162] <... openat resumed>) = 3 [pid 5163] write(3, "1000", 4 [pid 5164] close(3 [pid 5161] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5164] <... close resumed>) = 0 [pid 5161] <... prctl resumed>) = 0 [pid 5163] <... write resumed>) = 4 [pid 5161] setpgid(0, 0) = 0 [pid 5161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5163] close(3) = 0 [pid 5161] <... openat resumed>) = 3 [pid 5163] symlink("/dev/binderfs", "./binderfs" [pid 5164] symlink("/dev/binderfs", "./binderfs" [pid 5161] write(3, "1000", 4 [pid 5163] <... symlink resumed>) = 0 [pid 5161] <... write resumed>) = 4 [pid 5163] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5164] <... symlink resumed>) = 0 [pid 5161] close(3) = 0 [pid 5161] symlink("/dev/binderfs", "./binderfs" [pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5162] write(3, "1000", 4 [pid 5161] <... symlink resumed>) = 0 [pid 5163] <... openat resumed>) = 3 [pid 5164] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5162] <... write resumed>) = 4 [pid 5161] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5163] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5162] close(3 [pid 5161] <... openat resumed>) = 3 [pid 5163] <... ioctl resumed>) = 0 [pid 5162] <... close resumed>) = 0 [pid 5161] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5163] memfd_create("syzkaller", 0 [pid 5164] <... ioctl resumed>) = 0 [pid 5162] symlink("/dev/binderfs", "./binderfs" [pid 5161] <... ioctl resumed>) = 0 [pid 5163] <... memfd_create resumed>) = 4 [pid 5160] <... mount resumed>) = 0 [ 115.135194][ T5155] I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [ 115.145113][ T5102] I/O error, dev loop4, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [ 115.165762][ T5160] loop2: detected capacity change from 0 to 1024 [pid 5164] memfd_create("syzkaller", 0 [pid 5162] <... symlink resumed>) = 0 [pid 5161] memfd_create("syzkaller", 0 [pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5160] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5162] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5161] <... memfd_create resumed>) = 4 [pid 5163] <... mmap resumed>) = 0x7fc3fd400000 [pid 5160] <... openat resumed>) = 4 [pid 5089] <... umount2 resumed>) = 0 [pid 5164] <... memfd_create resumed>) = 4 [pid 5162] <... openat resumed>) = 3 [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5163] 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 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5162] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5161] <... mmap resumed>) = 0x7fc3fd400000 [pid 5089] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5164] <... mmap resumed>) = 0x7fc3fd400000 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5160] chdir("./bus" [pid 5089] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5160] <... chdir resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5162] <... ioctl resumed>) = 0 [pid 5089] <... openat resumed>) = 4 [pid 5162] memfd_create("syzkaller", 0 [pid 5089] newfstatat(4, "", [pid 5162] <... memfd_create resumed>) = 4 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] getdents64(4, [pid 5162] <... mmap resumed>) = 0x7fc3fd400000 [pid 5161] 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 5160] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5160] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] getdents64(4, [pid 5160] exit_group(0 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5164] 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 5162] 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 5089] close(4) = 0 [pid 5160] <... exit_group resumed>) = ? [pid 5089] rmdir("./10/bus" [pid 5160] +++ exited with 0 +++ [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5160, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5088] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5088] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... openat resumed>) = 3 [pid 5088] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] getdents64(3, [pid 5089] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5088] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5163] <... write resumed>) = 524288 [pid 5089] unlink("./10/binderfs" [pid 5088] <... umount2 resumed>) = 0 [pid 5088] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... unlink resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] newfstatat(AT_FDCWD, "./9/bus", [pid 5089] getdents64(3, [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] close(3 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... close resumed>) = 0 [pid 5088] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5162] <... write resumed>) = 524288 [pid 5088] <... openat resumed>) = 4 [pid 5089] rmdir("./10" [pid 5088] newfstatat(4, "", [pid 5163] munmap(0x7fc3fd400000, 138412032 [pid 5089] <... rmdir resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5163] <... munmap resumed>) = 0 [pid 5088] getdents64(4, [pid 5162] munmap(0x7fc3fd400000, 138412032 [pid 5163] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5089] mkdir("./11", 0777 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5162] <... munmap resumed>) = 0 [pid 5161] <... write resumed>) = 524288 [pid 5163] <... openat resumed>) = 5 [pid 5088] close(4 [pid 5164] <... write resumed>) = 524288 [pid 5163] ioctl(5, LOOP_SET_FD, 4 [pid 5089] <... mkdir resumed>) = 0 [pid 5164] munmap(0x7fc3fd400000, 138412032 [pid 5161] munmap(0x7fc3fd400000, 138412032 [pid 5088] <... close resumed>) = 0 [pid 5163] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5162] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5163] ioctl(5, LOOP_CLR_FD [pid 5088] rmdir("./9/bus" [pid 5162] <... openat resumed>) = 5 [pid 5161] <... munmap resumed>) = 0 [pid 5163] <... ioctl resumed>) = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5162] ioctl(5, LOOP_SET_FD, 4 [pid 5164] <... munmap resumed>) = 0 [pid 5161] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... openat resumed>) = 3 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5161] <... openat resumed>) = 5 [pid 5164] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5161] ioctl(5, LOOP_SET_FD, 4 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5088] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] unlink("./9/binderfs" [pid 5163] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 5163] close(5) = 0 [pid 5163] close(4 [pid 5164] <... openat resumed>) = 5 [pid 5161] <... ioctl resumed>) = 0 [pid 5088] <... unlink resumed>) = 0 [pid 5164] ioctl(5, LOOP_SET_FD, 4 [pid 5161] close(4 [pid 5088] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5162] <... ioctl resumed>) = 0 [pid 5162] close(4) = 0 [pid 5162] close(5) = 0 [pid 5162] mkdir("./bus", 0777 [pid 5163] <... close resumed>) = 0 [pid 5161] <... close resumed>) = 0 [pid 5088] close(3 [pid 5161] close(5) = 0 [pid 5161] mkdir("./bus", 0777 [pid 5163] exit_group(0 [pid 5088] <... close resumed>) = 0 [pid 5163] <... exit_group resumed>) = ? [pid 5161] <... mkdir resumed>) = 0 [pid 5163] +++ exited with 0 +++ [pid 5088] rmdir("./9" [pid 5164] <... ioctl resumed>) = 0 [pid 5162] <... mkdir resumed>) = 0 [pid 5161] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5086] --- 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 5162] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5088] <... rmdir resumed>) = 0 [pid 5088] mkdir("./10", 0777 [pid 5086] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5086] newfstatat(3, "", [pid 5088] <... mkdir resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5086] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5086] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5161] <... mount resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5164] close(4 [pid 5161] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5088] <... openat resumed>) = 3 [pid 5086] unlink("./13/binderfs" [pid 5164] <... close resumed>) = 0 [pid 5161] <... openat resumed>) = 4 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5164] close(5 [pid 5161] chdir("./bus" [pid 5164] <... close resumed>) = 0 [pid 5161] <... chdir resumed>) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5164] mkdir("./bus", 0777 [pid 5161] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5086] getdents64(3, [pid 5161] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5164] <... mkdir resumed>) = 0 [pid 5086] close(3) = 0 [pid 5086] rmdir("./13") = 0 [pid 5086] mkdir("./14", 0777 [pid 5164] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5161] exit_group(0 [pid 5086] <... mkdir resumed>) = 0 [pid 5161] <... exit_group resumed>) = ? [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5164] <... mount resumed>) = 0 [pid 5162] <... mount resumed>) = 0 [pid 5161] +++ exited with 0 +++ [pid 5089] <... ioctl resumed>) = 0 [pid 5164] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5161, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5086] <... openat resumed>) = 3 [pid 5164] <... openat resumed>) = 4 [pid 5162] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5164] chdir("./bus" [pid 5162] <... openat resumed>) = 4 [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5164] <... chdir resumed>) = 0 [pid 5091] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... ioctl resumed>) = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5162] chdir("./bus" [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] close(3 [pid 5086] close(3 [pid 5164] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] <... close resumed>) = 0 [pid 5164] exit_group(0 [pid 5162] <... chdir resumed>) = 0 [pid 5091] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] <... close resumed>) = 0 [pid 5164] <... exit_group resumed>) = ? [ 115.286871][ T5162] loop1: detected capacity change from 0 to 1024 [ 115.297067][ T5161] loop5: detected capacity change from 0 to 1024 [ 115.306585][ T5164] loop4: detected capacity change from 0 to 1024 [pid 5162] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5091] <... openat resumed>) = 3 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5162] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5165 [pid 5091] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5091] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5162] exit_group(0) = ? [pid 5164] +++ exited with 0 +++ [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5164, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5166 ./strace-static-x86_64: Process 5166 attached [pid 5166] set_robust_list(0x555560e9f660, 24 [pid 5090] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5166] <... set_robust_list resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5166] chdir("./11" [pid 5090] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5166] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 5165 attached [pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5090] <... openat resumed>) = 3 [pid 5166] <... prctl resumed>) = 0 [pid 5090] newfstatat(3, "", [pid 5166] setpgid(0, 0 [pid 5165] set_robust_list(0x555560e9f660, 24 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5166] <... setpgid resumed>) = 0 [pid 5090] getdents64(3, [pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5165] <... set_robust_list resumed>) = 0 [pid 5091] <... umount2 resumed>) = 0 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5166] <... openat resumed>) = 3 [pid 5165] chdir("./14" [pid 5090] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5165] <... chdir resumed>) = 0 [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5165] setpgid(0, 0) = 0 [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5166] write(3, "1000", 4 [pid 5165] <... openat resumed>) = 3 [pid 5091] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... umount2 resumed>) = 0 [pid 5166] <... write resumed>) = 4 [pid 5166] close(3) = 0 [pid 5166] symlink("/dev/binderfs", "./binderfs" [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5166] <... symlink resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./9/bus", [pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5090] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5090] newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5090] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5090] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] close(4) = 0 [pid 5090] rmdir("./10/bus") = 0 [pid 5090] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5090] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5166] <... openat resumed>) = 3 [pid 5165] write(3, "1000", 4 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5166] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5090] unlink("./10/binderfs") = 0 [pid 5090] getdents64(3, [pid 5166] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5166] memfd_create("syzkaller", 0 [pid 5090] close(3 [pid 5166] <... memfd_create resumed>) = 4 [pid 5090] <... close resumed>) = 0 [pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] rmdir("./10" [pid 5166] <... mmap resumed>) = 0x7fc3fd400000 [pid 5090] <... rmdir resumed>) = 0 [pid 5166] 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 5165] <... write resumed>) = 4 [pid 5091] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] mkdir("./11", 0777 [pid 5088] <... ioctl resumed>) = 0 [pid 5165] close(3 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... mkdir resumed>) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5090] ioctl(3, LOOP_CLR_FD) = 0 [pid 5091] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] close(3 [pid 5165] <... close resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5165] symlink("/dev/binderfs", "./binderfs" [pid 5091] <... openat resumed>) = 4 [pid 5165] <... symlink resumed>) = 0 [pid 5162] +++ exited with 0 +++ [pid 5091] newfstatat(4, "", [pid 5088] close(3 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5167 [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5088] <... close resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5087] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 ./strace-static-x86_64: Process 5168 attached [pid 5165] <... openat resumed>) = 3 [pid 5091] getdents64(4, [pid 5087] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5168 [pid 5165] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] getdents64(4, ./strace-static-x86_64: Process 5167 attached [pid 5168] set_robust_list(0x555560e9f660, 24 [pid 5165] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5087] <... umount2 resumed>) = 0 [pid 5168] <... set_robust_list resumed>) = 0 [pid 5168] chdir("./10" [pid 5165] memfd_create("syzkaller", 0 [pid 5091] close(4 [pid 5168] <... chdir resumed>) = 0 [pid 5167] set_robust_list(0x555560e9f660, 24 [pid 5165] <... memfd_create resumed>) = 4 [pid 5091] <... close resumed>) = 0 [pid 5167] <... set_robust_list resumed>) = 0 [pid 5165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] rmdir("./9/bus" [pid 5168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5168] setpgid(0, 0) = 0 [pid 5168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... rmdir resumed>) = 0 [pid 5091] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5168] <... openat resumed>) = 3 [pid 5167] chdir("./11" [pid 5166] <... write resumed>) = 524288 [pid 5165] <... mmap resumed>) = 0x7fc3fd400000 [pid 5087] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5168] write(3, "1000", 4 [pid 5167] <... chdir resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./9/binderfs", [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5168] <... write resumed>) = 4 [pid 5166] munmap(0x7fc3fd400000, 138412032 [pid 5087] newfstatat(AT_FDCWD, "./10/bus", [pid 5168] close(3 [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5166] <... munmap resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5168] <... close resumed>) = 0 [pid 5167] <... prctl resumed>) = 0 [pid 5091] unlink("./9/binderfs" [pid 5087] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5168] symlink("/dev/binderfs", "./binderfs" [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5167] setpgid(0, 0 [pid 5091] <... unlink resumed>) = 0 [pid 5087] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5168] <... symlink resumed>) = 0 [pid 5091] getdents64(3, [pid 5087] <... openat resumed>) = 4 [pid 5167] <... setpgid resumed>) = 0 [pid 5166] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5166] <... openat resumed>) = 5 [pid 5087] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5168] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5166] ioctl(5, LOOP_SET_FD, 4 [pid 5087] getdents64(4, [pid 5167] <... openat resumed>) = 3 [pid 5165] 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 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5168] <... openat resumed>) = 3 [pid 5087] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5168] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] close(3 [pid 5087] close(4) = 0 [pid 5091] <... close resumed>) = 0 [pid 5167] write(3, "1000", 4 [pid 5091] rmdir("./9" [pid 5167] <... write resumed>) = 4 [pid 5087] rmdir("./10/bus" [pid 5167] close(3 [pid 5087] <... rmdir resumed>) = 0 [pid 5167] <... close resumed>) = 0 [pid 5167] symlink("/dev/binderfs", "./binderfs" [pid 5168] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5168] memfd_create("syzkaller", 0 [pid 5167] <... symlink resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5168] <... memfd_create resumed>) = 4 [pid 5087] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] unlink("./10/binderfs" [pid 5167] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5087] <... unlink resumed>) = 0 [pid 5087] getdents64(3, [pid 5168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5168] <... mmap resumed>) = 0x7fc3fd400000 [pid 5087] close(3 [pid 5168] 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 5091] mkdir("./10", 0777 [pid 5087] <... close resumed>) = 0 [pid 5087] rmdir("./10") = 0 [pid 5087] mkdir("./11", 0777 [pid 5167] <... openat resumed>) = 3 [pid 5087] <... mkdir resumed>) = 0 [pid 5091] <... mkdir resumed>) = 0 [pid 5167] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5167] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5166] <... ioctl resumed>) = 0 [pid 5166] close(4) = 0 [pid 5166] close(5) = 0 [pid 5166] mkdir("./bus", 0777 [pid 5167] memfd_create("syzkaller", 0 [pid 5166] <... mkdir resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5166] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5167] <... memfd_create resumed>) = 4 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [ 115.474649][ T5166] loop3: detected capacity change from 0 to 1024 [pid 5168] <... write resumed>) = 524288 [pid 5167] 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 5166] <... mount resumed>) = 0 [pid 5165] <... write resumed>) = 524288 [pid 5165] munmap(0x7fc3fd400000, 138412032 [pid 5166] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5168] munmap(0x7fc3fd400000, 138412032 [pid 5166] <... openat resumed>) = 4 [pid 5168] <... munmap resumed>) = 0 [pid 5166] chdir("./bus") = 0 [pid 5165] <... munmap resumed>) = 0 [pid 5091] <... ioctl resumed>) = 0 [pid 5168] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5168] <... openat resumed>) = 5 [pid 5166] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5165] <... openat resumed>) = 5 [pid 5168] ioctl(5, LOOP_SET_FD, 4 [pid 5166] exit_group(0 [pid 5165] ioctl(5, LOOP_SET_FD, 4 [pid 5166] <... exit_group resumed>) = ? [pid 5165] <... ioctl resumed>) = 0 [pid 5091] close(3 [pid 5167] <... write resumed>) = 524288 [pid 5091] <... close resumed>) = 0 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] <... ioctl resumed>) = 0 [pid 5166] +++ exited with 0 +++ [pid 5167] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5167] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 5 [pid 5167] ioctl(5, LOOP_SET_FD, 4) = 0 [pid 5087] close(3) = 0 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5089] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5169 attached [pid 5165] close(4 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5169 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5169] set_robust_list(0x555560e9f660, 24 [pid 5089] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5169] <... set_robust_list resumed>) = 0 [pid 5165] <... close resumed>) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5165] close(5 [pid 5089] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5170 [pid 5089] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 ./strace-static-x86_64: Process 5170 attached [pid 5089] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5170] set_robust_list(0x555560e9f660, 24) = 0 [pid 5170] chdir("./11") = 0 [pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5170] setpgid(0, 0) = 0 [pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5167] close(4) = 0 [pid 5167] close(5) = 0 [pid 5167] mkdir("./bus", 0777) = 0 [pid 5170] write(3, "1000", 4 [pid 5169] chdir("./10" [pid 5168] <... ioctl resumed>) = 0 [pid 5165] <... close resumed>) = 0 [pid 5089] <... umount2 resumed>) = 0 [pid 5169] <... chdir resumed>) = 0 [pid 5165] mkdir("./bus", 0777 [pid 5169] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5170] <... write resumed>) = 4 [pid 5168] close(4 [pid 5170] close(3 [pid 5169] <... prctl resumed>) = 0 [pid 5168] <... close resumed>) = 0 [pid 5167] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5170] <... close resumed>) = 0 [pid 5169] setpgid(0, 0 [pid 5168] close(5 [pid 5165] <... mkdir resumed>) = 0 [pid 5089] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5170] symlink("/dev/binderfs", "./binderfs" [pid 5168] <... close resumed>) = 0 [ 115.557818][ T5165] loop0: detected capacity change from 0 to 1024 [ 115.557898][ T5168] loop2: detected capacity change from 0 to 1024 [ 115.586528][ T5167] loop4: detected capacity change from 0 to 1024 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5170] <... symlink resumed>) = 0 [pid 5169] <... setpgid resumed>) = 0 [pid 5168] mkdir("./bus", 0777 [pid 5165] mount("/dev/loop0", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5168] <... mkdir resumed>) = 0 [pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5168] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5170] <... openat resumed>) = 3 [pid 5169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] newfstatat(AT_FDCWD, "./11/bus", [pid 5169] <... openat resumed>) = 3 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5169] write(3, "1000", 4) = 4 [pid 5170] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5169] close(3) = 0 [pid 5169] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5165] <... mount resumed>) = 0 [pid 5089] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5165] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5165] chdir("./bus") = 0 [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5167] <... mount resumed>) = 0 [pid 5165] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5167] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5167] chdir("./bus") = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5167] exit_group(0 [pid 5168] <... mount resumed>) = 0 [pid 5167] <... exit_group resumed>) = ? [pid 5169] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5167] +++ exited with 0 +++ [pid 5165] exit_group(0 [pid 5089] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5165] <... exit_group resumed>) = ? [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5167, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5089] <... openat resumed>) = 4 [pid 5168] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5168] chdir("./bus") = 0 [pid 5168] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5168] exit_group(0) = ? [pid 5169] <... openat resumed>) = 3 [pid 5168] +++ exited with 0 +++ [pid 5165] +++ exited with 0 +++ [pid 5089] newfstatat(4, "", [pid 5090] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5168, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5165, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5169] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] getdents64(4, [pid 5086] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... openat resumed>) = 3 [pid 5088] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] getdents64(4, [pid 5086] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5088] <... openat resumed>) = 3 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5088] newfstatat(3, "", [pid 5086] newfstatat(3, "", [pid 5090] newfstatat(3, "", [pid 5089] close(4 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5170] <... ioctl resumed>) = 0 [pid 5086] getdents64(3, [pid 5089] <... close resumed>) = 0 [pid 5088] getdents64(3, [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] rmdir("./11/bus" [pid 5170] memfd_create("syzkaller", 0 [pid 5169] <... ioctl resumed>) = 0 [pid 5169] memfd_create("syzkaller", 0 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] <... rmdir resumed>) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5170] <... memfd_create resumed>) = 4 [pid 5169] <... memfd_create resumed>) = 4 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] getdents64(3, [pid 5089] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5169] <... mmap resumed>) = 0x7fc3fd400000 [pid 5086] <... umount2 resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] unlink("./11/binderfs") = 0 [pid 5089] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] close(3 [pid 5169] 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 5089] <... close resumed>) = 0 [pid 5170] 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 5089] rmdir("./11") = 0 [pid 5090] <... umount2 resumed>) = 0 [pid 5089] mkdir("./12", 0777 [pid 5088] <... umount2 resumed>) = 0 [pid 5086] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5170] <... write resumed>) = 524288 [pid 5089] <... mkdir resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] newfstatat(AT_FDCWD, "./14/bus", [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] newfstatat(AT_FDCWD, "./10/bus", [pid 5090] newfstatat(AT_FDCWD, "./11/bus", [pid 5089] <... openat resumed>) = 3 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5170] munmap(0x7fc3fd400000, 138412032 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5088] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5169] <... write resumed>) = 524288 [pid 5086] <... openat resumed>) = 4 [pid 5169] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5169] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 5 [pid 5170] <... munmap resumed>) = 0 [pid 5090] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(4, "", [pid 5169] ioctl(5, LOOP_SET_FD, 4 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5170] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5090] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... openat resumed>) = 4 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5170] <... openat resumed>) = 5 [pid 5090] <... openat resumed>) = 4 [pid 5088] newfstatat(4, "", [pid 5086] getdents64(4, [pid 5170] ioctl(5, LOOP_SET_FD, 4 [pid 5090] newfstatat(4, "", [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5169] <... ioctl resumed>) = 0 [pid 5169] close(4 [pid 5170] <... ioctl resumed>) = 0 [pid 5169] <... close resumed>) = 0 [pid 5090] getdents64(4, [pid 5088] getdents64(4, [pid 5086] getdents64(4, [pid 5169] close(5 [pid 5086] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5169] <... close resumed>) = 0 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5086] close(4 [pid 5170] close(4 [pid 5169] mkdir("./bus", 0777 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] getdents64(4, [pid 5086] <... close resumed>) = 0 [pid 5170] <... close resumed>) = 0 [pid 5090] getdents64(4, [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] rmdir("./14/bus" [pid 5170] close(5 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5088] close(4 [pid 5170] <... close resumed>) = 0 [pid 5169] <... mkdir resumed>) = 0 [pid 5090] close(4 [pid 5088] <... close resumed>) = 0 [pid 5086] <... rmdir resumed>) = 0 [ 115.744647][ T5169] loop5: detected capacity change from 0 to 1024 [ 115.757448][ T5170] loop1: detected capacity change from 0 to 1024 [pid 5169] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5170] mkdir("./bus", 0777 [pid 5090] <... close resumed>) = 0 [pid 5089] <... ioctl resumed>) = 0 [pid 5088] rmdir("./10/bus" [pid 5086] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] rmdir("./11/bus") = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5170] <... mkdir resumed>) = 0 [pid 5086] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5090] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5170] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5090] newfstatat(AT_FDCWD, "./11/binderfs", [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5086] unlink("./14/binderfs" [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] unlink("./11/binderfs" [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5090] <... unlink resumed>) = 0 [pid 5089] close(3 [pid 5088] unlink("./10/binderfs" [pid 5086] getdents64(3, [pid 5090] getdents64(3, [pid 5089] <... close resumed>) = 0 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] <... unlink resumed>) = 0 [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] close(3) = 0 [pid 5086] close(3 [pid 5088] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] close(3) = 0 [pid 5088] rmdir("./10") = 0 [pid 5088] mkdir("./11", 0777) = 0 ./strace-static-x86_64: Process 5171 attached [pid 5090] rmdir("./11" [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5171 [pid 5086] <... close resumed>) = 0 [pid 5171] set_robust_list(0x555560e9f660, 24 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5171] <... set_robust_list resumed>) = 0 [pid 5169] <... mount resumed>) = 0 [pid 5090] <... rmdir resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5086] rmdir("./14" [pid 5090] mkdir("./12", 0777 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5171] chdir("./12" [pid 5170] <... mount resumed>) = 0 [pid 5169] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5090] <... mkdir resumed>) = 0 [pid 5088] <... ioctl resumed>) = 0 [pid 5086] <... rmdir resumed>) = 0 [pid 5171] <... chdir resumed>) = 0 [pid 5170] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5086] mkdir("./15", 0777 [pid 5090] <... openat resumed>) = 3 [pid 5088] close(3) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5170] <... openat resumed>) = 4 [pid 5169] <... openat resumed>) = 4 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5086] <... mkdir resumed>) = 0 [pid 5090] <... ioctl resumed>) = 0 [pid 5169] chdir("./bus" [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5171] <... prctl resumed>) = 0 [pid 5170] chdir("./bus" [pid 5090] close(3 [pid 5171] setpgid(0, 0 [pid 5090] <... close resumed>) = 0 [pid 5170] <... chdir resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5171] <... setpgid resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5170] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] ioctl(3, LOOP_CLR_FD) = 0 [pid 5170] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5172 [pid 5171] <... openat resumed>) = 3 [pid 5170] exit_group(0 [pid 5169] <... chdir resumed>) = 0 [pid 5086] close(3 [pid 5170] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5172 attached [pid 5172] set_robust_list(0x555560e9f660, 24) = 0 [pid 5172] chdir("./11" [pid 5169] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5086] <... close resumed>) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5172] <... chdir resumed>) = 0 [pid 5169] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5172] setpgid(0, 0) = 0 [pid 5172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5173 [pid 5171] write(3, "1000", 4 [pid 5172] <... openat resumed>) = 3 [pid 5171] <... write resumed>) = 4 [pid 5169] exit_group(0./strace-static-x86_64: Process 5173 attached [pid 5173] set_robust_list(0x555560e9f660, 24) = 0 [pid 5172] write(3, "1000", 4) = 4 [pid 5173] chdir("./12" [pid 5172] close(3) = 0 [pid 5172] symlink("/dev/binderfs", "./binderfs" [pid 5173] <... chdir resumed>) = 0 [pid 5172] <... symlink resumed>) = 0 [pid 5171] close(3) = 0 [pid 5169] <... exit_group resumed>) = ? [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5171] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 5174 attached [pid 5173] setpgid(0, 0 [pid 5172] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5174] set_robust_list(0x555560e9f660, 24 [pid 5173] <... setpgid resumed>) = 0 [pid 5171] <... symlink resumed>) = 0 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5174 [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5171] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5170] +++ exited with 0 +++ [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5087] restart_syscall(<... resuming interrupted clone ...> [pid 5174] <... set_robust_list resumed>) = 0 [pid 5172] <... openat resumed>) = 3 [pid 5174] chdir("./15" [pid 5172] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5087] <... restart_syscall resumed>) = 0 [pid 5174] <... chdir resumed>) = 0 [pid 5172] <... ioctl resumed>) = 0 [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5172] memfd_create("syzkaller", 0 [pid 5174] <... prctl resumed>) = 0 [pid 5172] <... memfd_create resumed>) = 4 [pid 5169] +++ exited with 0 +++ [pid 5087] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5174] setpgid(0, 0 [pid 5172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5169, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5174] <... setpgid resumed>) = 0 [pid 5172] <... mmap resumed>) = 0x7fc3fd400000 [pid 5087] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5173] <... openat resumed>) = 3 [pid 5172] 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 5171] <... openat resumed>) = 3 [pid 5087] <... openat resumed>) = 3 [pid 5174] <... openat resumed>) = 3 [pid 5173] write(3, "1000", 4 [pid 5171] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5087] newfstatat(3, "", [pid 5171] <... ioctl resumed>) = 0 [pid 5173] <... write resumed>) = 4 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5174] write(3, "1000", 4 [pid 5173] close(3 [pid 5087] getdents64(3, [pid 5171] memfd_create("syzkaller", 0 [pid 5174] <... write resumed>) = 4 [pid 5173] <... close resumed>) = 0 [pid 5171] <... memfd_create resumed>) = 4 [pid 5091] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5173] symlink("/dev/binderfs", "./binderfs" [pid 5171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5174] close(3 [pid 5087] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5173] <... symlink resumed>) = 0 [pid 5174] <... close resumed>) = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5171] <... mmap resumed>) = 0x7fc3fd400000 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5174] symlink("/dev/binderfs", "./binderfs" [pid 5173] <... openat resumed>) = 3 [pid 5171] 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 5091] <... openat resumed>) = 3 [pid 5174] <... symlink resumed>) = 0 [pid 5173] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] newfstatat(3, "", [pid 5174] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5174] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5174] memfd_create("syzkaller", 0) = 4 [pid 5174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5174] 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 5173] <... ioctl resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5173] memfd_create("syzkaller", 0 [pid 5091] getdents64(3, [pid 5173] <... memfd_create resumed>) = 4 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5091] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5087] <... umount2 resumed>) = 0 [pid 5087] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5173] <... mmap resumed>) = 0x7fc3fd400000 [pid 5172] <... write resumed>) = 524288 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./11/bus", [pid 5174] <... write resumed>) = 524288 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5171] <... write resumed>) = 524288 [pid 5087] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5087] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5172] munmap(0x7fc3fd400000, 138412032 [pid 5087] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5172] <... munmap resumed>) = 0 [pid 5087] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5087] close(4) = 0 [pid 5173] 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 5087] rmdir("./11/bus") = 0 [pid 5087] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5172] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5172] <... openat resumed>) = 5 [pid 5087] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] unlink("./11/binderfs" [pid 5172] ioctl(5, LOOP_SET_FD, 4 [pid 5087] <... unlink resumed>) = 0 [pid 5087] getdents64(3, [pid 5171] munmap(0x7fc3fd400000, 138412032 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5171] <... munmap resumed>) = 0 [pid 5171] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5087] close(3) = 0 [pid 5087] rmdir("./11" [pid 5171] <... openat resumed>) = 5 [pid 5087] <... rmdir resumed>) = 0 [pid 5173] <... write resumed>) = 524288 [pid 5091] <... umount2 resumed>) = 0 [pid 5171] ioctl(5, LOOP_SET_FD, 4 [pid 5174] munmap(0x7fc3fd400000, 138412032 [pid 5087] mkdir("./12", 0777 [pid 5174] <... munmap resumed>) = 0 [pid 5087] <... mkdir resumed>) = 0 [pid 5174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 5174] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 5174] ioctl(5, LOOP_CLR_FD) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5087] ioctl(3, LOOP_CLR_FD) = 0 [pid 5087] close(3 [pid 5174] ioctl(5, LOOP_SET_FD, 4 [pid 5172] <... ioctl resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5173] munmap(0x7fc3fd400000, 138412032 [pid 5174] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5172] close(4 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5174] close(5 [pid 5173] <... munmap resumed>) = 0 [pid 5172] <... close resumed>) = 0 [pid 5171] <... ioctl resumed>) = 0 [pid 5091] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5174] <... close resumed>) = 0 [pid 5172] close(5 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5175 [pid 5174] close(4 [pid 5172] <... close resumed>) = 0 [pid 5171] close(4 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5175 attached [pid 5173] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5172] mkdir("./bus", 0777 [pid 5171] <... close resumed>) = 0 [ 116.008019][ T5172] loop2: detected capacity change from 0 to 1024 [ 116.043694][ T5171] loop3: detected capacity change from 0 to 1024 [pid 5091] newfstatat(AT_FDCWD, "./10/bus", [pid 5173] <... openat resumed>) = 5 [pid 5172] <... mkdir resumed>) = 0 [pid 5171] close(5 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5173] ioctl(5, LOOP_SET_FD, 4 [pid 5171] <... close resumed>) = 0 [pid 5175] set_robust_list(0x555560e9f660, 24 [pid 5171] mkdir("./bus", 0777 [pid 5175] <... set_robust_list resumed>) = 0 [pid 5175] chdir("./12" [pid 5172] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5175] <... chdir resumed>) = 0 [pid 5171] <... mkdir resumed>) = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5175] setpgid(0, 0) = 0 [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5091] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5171] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5175] write(3, "1000", 4) = 4 [pid 5174] <... close resumed>) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5175] close(3 [pid 5091] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5175] <... close resumed>) = 0 [pid 5175] symlink("/dev/binderfs", "./binderfs" [pid 5091] <... openat resumed>) = 4 [pid 5175] <... symlink resumed>) = 0 [pid 5091] newfstatat(4, "", [pid 5175] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5174] exit_group(0 [pid 5173] <... ioctl resumed>) = 0 [pid 5172] <... mount resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5175] <... openat resumed>) = 3 [pid 5174] <... exit_group resumed>) = ? [pid 5173] close(4 [pid 5091] getdents64(4, [pid 5175] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5174] +++ exited with 0 +++ [pid 5173] <... close resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5175] <... ioctl resumed>) = 0 [pid 5173] close(5 [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5091] getdents64(4, [pid 5173] <... close resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5175] memfd_create("syzkaller", 0 [pid 5172] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5091] close(4 [pid 5173] mkdir("./bus", 0777 [pid 5172] <... openat resumed>) = 4 [pid 5175] <... memfd_create resumed>) = 4 [pid 5091] <... close resumed>) = 0 [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5172] chdir("./bus" [pid 5091] rmdir("./10/bus" [pid 5086] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5175] <... mmap resumed>) = 0x7fc3fd400000 [pid 5173] <... mkdir resumed>) = 0 [pid 5172] <... chdir resumed>) = 0 [pid 5172] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5173] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5172] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5086] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5172] exit_group(0) = ? [pid 5086] <... openat resumed>) = 3 [pid 5091] <... rmdir resumed>) = 0 [ 116.088844][ T5173] loop4: detected capacity change from 0 to 1024 [pid 5086] newfstatat(3, "", [pid 5172] +++ exited with 0 +++ [pid 5091] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5175] 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 5171] <... mount resumed>) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5175] <... write resumed>) = 524288 [pid 5171] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5091] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5172, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5086] getdents64(3, [pid 5171] <... openat resumed>) = 4 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5171] chdir("./bus" [pid 5091] unlink("./10/binderfs" [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5088] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5175] munmap(0x7fc3fd400000, 138412032 [pid 5171] <... chdir resumed>) = 0 [pid 5091] <... unlink resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5175] <... munmap resumed>) = 0 [pid 5171] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] getdents64(3, [pid 5088] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5171] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] close(3 [pid 5088] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] unlink("./15/binderfs" [pid 5091] <... close resumed>) = 0 [pid 5173] <... mount resumed>) = 0 [pid 5091] rmdir("./10" [pid 5088] <... umount2 resumed>) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5173] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5175] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5173] <... openat resumed>) = 4 [pid 5088] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] getdents64(3, [pid 5175] <... openat resumed>) = 5 [pid 5173] chdir("./bus" [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] newfstatat(AT_FDCWD, "./11/bus", [pid 5086] close(3 [pid 5173] <... chdir resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5173] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] <... rmdir resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5088] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5175] ioctl(5, LOOP_SET_FD, 4 [pid 5088] newfstatat(4, "", [pid 5173] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5171] exit_group(0 [pid 5091] mkdir("./11", 0777 [pid 5086] rmdir("./15" [pid 5173] exit_group(0 [pid 5171] <... exit_group resumed>) = ? [pid 5091] <... mkdir resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... rmdir resumed>) = 0 [pid 5173] <... exit_group resumed>) = ? [pid 5088] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5088] close(4) = 0 [pid 5175] <... ioctl resumed>) = 0 [pid 5088] rmdir("./11/bus") = 0 [pid 5086] mkdir("./16", 0777 [pid 5175] close(4) = 0 [pid 5175] close(5 [pid 5088] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5175] <... close resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5175] mkdir("./bus", 0777 [pid 5088] newfstatat(AT_FDCWD, "./11/binderfs", [pid 5175] <... mkdir resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] <... mkdir resumed>) = 0 [pid 5088] unlink("./11/binderfs" [pid 5175] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5088] <... unlink resumed>) = 0 [pid 5171] +++ exited with 0 +++ [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5088] getdents64(3, [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5091] <... openat resumed>) = 3 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5171, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5091] <... ioctl resumed>) = 0 [pid 5089] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] close(3 [pid 5086] <... ioctl resumed>) = 0 [pid 5175] <... mount resumed>) = 0 [pid 5091] close(3 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... close resumed>) = 0 [pid 5086] close(3 [pid 5091] <... close resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] rmdir("./11" [pid 5173] +++ exited with 0 +++ [pid 5089] <... openat resumed>) = 3 [pid 5088] <... rmdir resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5089] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5175] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5089] getdents64(3, [pid 5088] mkdir("./12", 0777./strace-static-x86_64: Process 5176 attached [pid 5175] <... openat resumed>) = 4 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5088] <... mkdir resumed>) = 0 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5176 [pid 5089] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5176] set_robust_list(0x555560e9f660, 24 [pid 5175] chdir("./bus") = 0 [pid 5175] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5090] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5175] exit_group(0 [pid 5090] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... openat resumed>) = 3 [pid 5175] <... exit_group resumed>) = ? [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5176] <... set_robust_list resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [ 116.198286][ T5175] loop1: detected capacity change from 0 to 1024 [pid 5090] newfstatat(3, "", [pid 5176] chdir("./16" [pid 5175] +++ exited with 0 +++ [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] <... ioctl resumed>) = 0 [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5087] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] getdents64(3, [pid 5087] <... openat resumed>) = 3 [pid 5087] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5087] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] <... umount2 resumed>) = 0 [pid 5088] close(3 [pid 5176] <... chdir resumed>) = 0 [pid 5090] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5089] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5176] setpgid(0, 0 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5177 [pid 5089] newfstatat(AT_FDCWD, "./12/bus", [pid 5088] <... close resumed>) = 0 ./strace-static-x86_64: Process 5177 attached [pid 5177] set_robust_list(0x555560e9f660, 24) = 0 [pid 5177] chdir("./11" [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5177] <... chdir resumed>) = 0 [pid 5089] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5177] setpgid(0, 0 [pid 5176] <... setpgid resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... umount2 resumed>) = 0 [pid 5177] <... setpgid resumed>) = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] <... openat resumed>) = 4 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] newfstatat(4, "", [pid 5177] <... openat resumed>) = 3 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5177] write(3, "1000", 4 [pid 5089] getdents64(4, [pid 5177] <... write resumed>) = 4 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5177] close(3) = 0 [pid 5177] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5089] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5176] <... openat resumed>) = 3 [pid 5089] close(4 [pid 5177] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5087] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5177] <... openat resumed>) = 3 [pid 5087] newfstatat(AT_FDCWD, "./12/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5177] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5087] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5177] memfd_create("syzkaller", 0 [pid 5087] <... openat resumed>) = 4 [pid 5177] <... memfd_create resumed>) = 4 [pid 5089] <... close resumed>) = 0 [pid 5087] newfstatat(4, "", [pid 5090] <... umount2 resumed>) = 0 [pid 5177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] rmdir("./12/bus" [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5177] <... mmap resumed>) = 0x7fc3fd400000 [pid 5176] write(3, "1000", 4 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... rmdir resumed>) = 0 [pid 5087] getdents64(4, [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5176] <... write resumed>) = 4 [pid 5090] newfstatat(AT_FDCWD, "./12/bus", [pid 5089] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5176] close(3 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5177] 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 5176] <... close resumed>) = 0 [pid 5090] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] unlink("./12/binderfs" [pid 5176] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5090] <... openat resumed>) = 4 [pid 5089] <... unlink resumed>) = 0 [pid 5087] getdents64(4, [pid 5090] newfstatat(4, "", [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] getdents64(3, [pid 5087] close(4 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5178 [pid 5087] <... close resumed>) = 0 [pid 5087] rmdir("./12/bus" [pid 5090] getdents64(4, [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] <... rmdir resumed>) = 0 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5089] close(3 [pid 5087] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5089] <... close resumed>) = 0 [pid 5087] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5089] rmdir("./12" [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5176] <... openat resumed>) = 3 [pid 5087] unlink("./12/binderfs") = 0 [pid 5089] <... rmdir resumed>) = 0 [pid 5087] getdents64(3, [pid 5176] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5089] mkdir("./13", 0777 [pid 5090] getdents64(4, [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] close(3 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5087] <... close resumed>) = 0 [pid 5176] <... ioctl resumed>) = 0 [pid 5090] close(4 [pid 5089] <... mkdir resumed>) = 0 [pid 5087] rmdir("./12" [pid 5176] memfd_create("syzkaller", 0 [pid 5090] <... close resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5087] <... rmdir resumed>) = 0 [pid 5090] rmdir("./12/bus" [pid 5087] mkdir("./13", 0777 [pid 5089] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5178 attached [pid 5090] <... rmdir resumed>) = 0 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5087] <... mkdir resumed>) = 0 [pid 5178] set_robust_list(0x555560e9f660, 24 [pid 5176] <... memfd_create resumed>) = 4 [pid 5090] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... ioctl resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5089] close(3 [pid 5087] <... ioctl resumed>) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... close resumed>) = 0 [pid 5178] <... set_robust_list resumed>) = 0 [pid 5087] close(3 [pid 5178] chdir("./12" [pid 5087] <... close resumed>) = 0 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5178] <... chdir resumed>) = 0 [pid 5177] <... write resumed>) = 524288 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5178] setpgid(0, 0) = 0 [pid 5178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5179 ./strace-static-x86_64: Process 5180 attached ./strace-static-x86_64: Process 5179 attached [pid 5178] <... openat resumed>) = 3 [pid 5176] <... mmap resumed>) = 0x7fc3fd400000 [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5180] set_robust_list(0x555560e9f660, 24 [pid 5179] set_robust_list(0x555560e9f660, 24 [pid 5180] <... set_robust_list resumed>) = 0 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5180 [pid 5090] unlink("./12/binderfs" [pid 5179] <... set_robust_list resumed>) = 0 [pid 5178] write(3, "1000", 4 [pid 5090] <... unlink resumed>) = 0 [pid 5178] <... write resumed>) = 4 [pid 5180] chdir("./13" [pid 5090] getdents64(3, [pid 5179] chdir("./13" [pid 5178] close(3) = 0 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5178] symlink("/dev/binderfs", "./binderfs" [pid 5090] close(3 [pid 5179] <... chdir resumed>) = 0 [pid 5178] <... symlink resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5090] rmdir("./12" [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5178] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5177] munmap(0x7fc3fd400000, 138412032 [pid 5176] 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 5090] <... rmdir resumed>) = 0 [pid 5180] <... chdir resumed>) = 0 [pid 5179] setpgid(0, 0 [pid 5178] <... openat resumed>) = 3 [pid 5090] mkdir("./13", 0777 [pid 5178] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5177] <... munmap resumed>) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5178] <... ioctl resumed>) = 0 [pid 5180] setpgid(0, 0 [pid 5179] <... setpgid resumed>) = 0 [pid 5178] memfd_create("syzkaller", 0 [pid 5177] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5180] <... setpgid resumed>) = 0 [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5178] <... memfd_create resumed>) = 4 [pid 5177] <... openat resumed>) = 5 [pid 5178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5177] ioctl(5, LOOP_SET_FD, 4 [pid 5180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5179] <... openat resumed>) = 3 [pid 5178] <... mmap resumed>) = 0x7fc3fd400000 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5178] 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 5090] <... openat resumed>) = 3 [pid 5180] <... openat resumed>) = 3 [pid 5179] write(3, "1000", 4 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5176] <... write resumed>) = 524288 [pid 5180] write(3, "1000", 4 [pid 5179] <... write resumed>) = 4 [pid 5176] munmap(0x7fc3fd400000, 138412032 [pid 5090] <... ioctl resumed>) = 0 [pid 5180] <... write resumed>) = 4 [pid 5179] close(3 [pid 5180] close(3 [pid 5090] close(3 [pid 5179] <... close resumed>) = 0 [pid 5179] symlink("/dev/binderfs", "./binderfs" [pid 5180] <... close resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5180] symlink("/dev/binderfs", "./binderfs" [pid 5177] <... ioctl resumed>) = 0 [pid 5180] <... symlink resumed>) = 0 [ 116.401845][ T5177] loop5: detected capacity change from 0 to 1024 [pid 5177] close(4 [pid 5179] <... symlink resumed>) = 0 [pid 5177] <... close resumed>) = 0 [pid 5177] close(5) = 0 [pid 5177] mkdir("./bus", 0777 [pid 5176] <... munmap resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5181 attached [pid 5180] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5178] <... write resumed>) = 524288 [pid 5177] <... mkdir resumed>) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5179] <... openat resumed>) = 3 [pid 5180] <... openat resumed>) = 3 [pid 5180] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5177] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5176] <... openat resumed>) = 5 [pid 5179] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5181] set_robust_list(0x555560e9f660, 24 [pid 5180] <... ioctl resumed>) = 0 [pid 5179] <... ioctl resumed>) = 0 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5181 [pid 5179] memfd_create("syzkaller", 0) = 4 [pid 5181] <... set_robust_list resumed>) = 0 [pid 5181] chdir("./13" [pid 5180] memfd_create("syzkaller", 0 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5178] munmap(0x7fc3fd400000, 138412032 [pid 5176] ioctl(5, LOOP_SET_FD, 4 [pid 5181] <... chdir resumed>) = 0 [pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5180] <... memfd_create resumed>) = 4 [pid 5179] <... mmap resumed>) = 0x7fc3fd400000 [pid 5178] <... munmap resumed>) = 0 [pid 5176] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5181] setpgid(0, 0 [pid 5180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5179] 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 5178] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5177] <... mount resumed>) = 0 [pid 5176] ioctl(5, LOOP_CLR_FD [pid 5181] <... setpgid resumed>) = 0 [pid 5181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5178] <... openat resumed>) = 5 [pid 5176] <... ioctl resumed>) = 0 [pid 5180] <... mmap resumed>) = 0x7fc3fd400000 [pid 5178] ioctl(5, LOOP_SET_FD, 4 [pid 5181] <... openat resumed>) = 3 [pid 5180] 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 5178] <... ioctl resumed>) = 0 [pid 5177] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 4 [pid 5177] chdir("./bus") = 0 [pid 5177] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5177] exit_group(0) = ? [pid 5177] +++ exited with 0 +++ [pid 5179] <... write resumed>) = 524288 [pid 5176] ioctl(5, LOOP_SET_FD, 4 [pid 5091] --- 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 5176] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5181] write(3, "1000", 4 [pid 5176] close(5 [pid 5181] <... write resumed>) = 4 [pid 5176] <... close resumed>) = 0 [pid 5091] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5181] close(3 [pid 5180] <... write resumed>) = 524288 [pid 5176] close(4 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5178] close(4) = 0 [ 116.497324][ T5178] loop2: detected capacity change from 0 to 1024 [pid 5178] close(5 [pid 5181] <... close resumed>) = 0 [pid 5179] munmap(0x7fc3fd400000, 138412032 [pid 5178] <... close resumed>) = 0 [pid 5176] <... close resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5181] symlink("/dev/binderfs", "./binderfs" [pid 5091] newfstatat(3, "", [pid 5178] mkdir("./bus", 0777 [pid 5181] <... symlink resumed>) = 0 [pid 5179] <... munmap resumed>) = 0 [pid 5178] <... mkdir resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] getdents64(3, [pid 5181] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5181] <... openat resumed>) = 3 [pid 5091] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5181] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 5 [pid 5091] <... umount2 resumed>) = 0 [pid 5181] memfd_create("syzkaller", 0) = 4 [pid 5178] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5179] ioctl(5, LOOP_SET_FD, 4 [pid 5181] <... mmap resumed>) = 0x7fc3fd400000 [pid 5091] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5180] munmap(0x7fc3fd400000, 138412032 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5180] <... munmap resumed>) = 0 [pid 5180] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 5 [pid 5091] newfstatat(AT_FDCWD, "./11/bus", [pid 5180] ioctl(5, LOOP_SET_FD, 4 [pid 5181] 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 5179] <... ioctl resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5176] exit_group(0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5176] <... exit_group resumed>) = ? [pid 5176] +++ exited with 0 +++ [pid 5091] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5179] close(4 [pid 5086] restart_syscall(<... resuming interrupted clone ...> [pid 5179] <... close resumed>) = 0 [pid 5178] <... mount resumed>) = 0 [pid 5091] newfstatat(4, "", [pid 5086] <... restart_syscall resumed>) = 0 [pid 5178] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5178] <... openat resumed>) = 4 [pid 5091] getdents64(4, [pid 5179] close(5 [pid 5178] chdir("./bus" [pid 5086] umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5179] <... close resumed>) = 0 [pid 5178] <... chdir resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5179] mkdir("./bus", 0777 [pid 5178] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5091] getdents64(4, [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5181] <... write resumed>) = 524288 [pid 5179] <... mkdir resumed>) = 0 [pid 5178] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5178] exit_group(0 [pid 5091] close(4 [pid 5178] <... exit_group resumed>) = ? [pid 5091] <... close resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5180] <... ioctl resumed>) = 0 [pid 5180] close(4) = 0 [pid 5178] +++ exited with 0 +++ [ 116.569385][ T5179] loop1: detected capacity change from 0 to 1024 [ 116.598190][ T5180] loop3: detected capacity change from 0 to 1024 [pid 5091] rmdir("./11/bus" [pid 5086] newfstatat(3, "", [pid 5181] munmap(0x7fc3fd400000, 138412032 [pid 5179] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5091] <... rmdir resumed>) = 0 [pid 5091] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5178, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5086] getdents64(3, [pid 5088] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5181] <... munmap resumed>) = 0 [pid 5180] close(5 [pid 5179] <... mount resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./11/binderfs", [pid 5088] getdents64(3, [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5180] <... close resumed>) = 0 [pid 5179] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5181] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5181] <... openat resumed>) = 5 [pid 5180] mkdir("./bus", 0777 [pid 5088] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] unlink("./11/binderfs" [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5180] <... mkdir resumed>) = 0 [pid 5179] <... openat resumed>) = 4 [pid 5091] <... unlink resumed>) = 0 [pid 5086] newfstatat(AT_FDCWD, "./16/binderfs", [pid 5179] chdir("./bus") = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] unlink("./16/binderfs" [pid 5179] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5180] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5181] ioctl(5, LOOP_SET_FD, 4 [pid 5179] exit_group(0 [pid 5091] getdents64(3, [pid 5086] <... unlink resumed>) = 0 [pid 5179] <... exit_group resumed>) = ? [pid 5086] getdents64(3, [pid 5179] +++ exited with 0 +++ [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5091] close(3 [pid 5086] close(3 [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5087] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5087] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5087] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... close resumed>) = 0 [pid 5086] rmdir("./16" [pid 5091] <... close resumed>) = 0 [pid 5086] <... rmdir resumed>) = 0 [pid 5091] rmdir("./11" [pid 5088] <... umount2 resumed>) = 0 [pid 5086] mkdir("./17", 0777 [pid 5087] <... umount2 resumed>) = 0 [pid 5180] <... mount resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5088] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... mkdir resumed>) = 0 [pid 5091] mkdir("./12", 0777 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5181] <... ioctl resumed>) = 0 [pid 5180] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5091] <... mkdir resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./13/bus", [pid 5086] <... openat resumed>) = 3 [pid 5181] close(4 [pid 5180] <... openat resumed>) = 4 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5181] <... close resumed>) = 0 [pid 5181] close(5 [pid 5091] <... openat resumed>) = 3 [pid 5086] <... ioctl resumed>) = 0 [pid 5181] <... close resumed>) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5181] mkdir("./bus", 0777 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5088] newfstatat(AT_FDCWD, "./12/bus", [pid 5087] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5180] chdir("./bus" [pid 5086] close(3) = 0 [pid 5180] <... chdir resumed>) = 0 [pid 5181] <... mkdir resumed>) = 0 [pid 5180] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(4, "", [pid 5180] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 5182 attached [pid 5181] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5180] exit_group(0 [pid 5091] <... ioctl resumed>) = 0 [pid 5088] <... openat resumed>) = 4 [pid 5087] getdents64(4, [pid 5091] close(3 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5182 [ 116.675188][ T5181] loop4: detected capacity change from 0 to 1024 [pid 5091] <... close resumed>) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5182] set_robust_list(0x555560e9f660, 24) = 0 [pid 5182] chdir("./17" [pid 5180] <... exit_group resumed>) = ? [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] newfstatat(4, "", [pid 5087] getdents64(4, [pid 5182] <... chdir resumed>) = 0 [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5182] setpgid(0, 0) = 0 [pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5182] write(3, "1000", 4) = 4 [pid 5182] close(3) = 0 [pid 5182] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5088] getdents64(4, [pid 5087] close(4 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5182] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5181] <... mount resumed>) = 0 [pid 5180] +++ exited with 0 +++ [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5087] <... close resumed>) = 0 [pid 5087] rmdir("./13/bus"./strace-static-x86_64: Process 5183 attached [pid 5181] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5088] getdents64(4, [pid 5182] memfd_create("syzkaller", 0 [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5180, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5182] <... memfd_create resumed>) = 4 [pid 5087] <... rmdir resumed>) = 0 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5183] set_robust_list(0x555560e9f660, 24 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5183 [pid 5088] close(4 [pid 5087] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5183] <... set_robust_list resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] rmdir("./12/bus" [pid 5087] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5183] chdir("./12" [pid 5089] <... openat resumed>) = 3 [pid 5089] newfstatat(3, "", [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5182] <... mmap resumed>) = 0x7fc3fd400000 [pid 5089] getdents64(3, [pid 5088] <... rmdir resumed>) = 0 [pid 5183] <... chdir resumed>) = 0 [pid 5182] 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 5181] <... openat resumed>) = 4 [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] unlink("./13/binderfs" [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5181] chdir("./bus" [pid 5183] <... prctl resumed>) = 0 [pid 5181] <... chdir resumed>) = 0 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5087] <... unlink resumed>) = 0 [pid 5089] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5183] setpgid(0, 0 [pid 5181] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5087] getdents64(3, [pid 5183] <... setpgid resumed>) = 0 [pid 5089] <... umount2 resumed>) = 0 [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5181] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5183] <... openat resumed>) = 3 [pid 5182] <... write resumed>) = 524288 [pid 5181] exit_group(0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] close(3 [pid 5183] write(3, "1000", 4 [pid 5181] <... exit_group resumed>) = ? [pid 5088] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5183] <... write resumed>) = 4 [pid 5087] <... close resumed>) = 0 [pid 5183] close(3 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] rmdir("./13" [pid 5089] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./13/bus", [pid 5183] <... close resumed>) = 0 [pid 5181] +++ exited with 0 +++ [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] unlink("./12/binderfs" [pid 5087] <... rmdir resumed>) = 0 [pid 5183] symlink("/dev/binderfs", "./binderfs" [pid 5089] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5089] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5089] newfstatat(4, "", [pid 5183] <... symlink resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5181, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5088] <... unlink resumed>) = 0 [pid 5087] mkdir("./14", 0777 [pid 5183] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5090] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] getdents64(3, [pid 5089] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] getdents64(4, [pid 5183] <... openat resumed>) = 3 [pid 5090] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] close(4) = 0 [pid 5089] rmdir("./13/bus" [pid 5183] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5090] <... openat resumed>) = 3 [pid 5089] <... rmdir resumed>) = 0 [pid 5088] close(3 [pid 5087] <... mkdir resumed>) = 0 [pid 5183] <... ioctl resumed>) = 0 [pid 5090] newfstatat(3, "", [pid 5088] <... close resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5183] memfd_create("syzkaller", 0 [pid 5182] munmap(0x7fc3fd400000, 138412032 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] rmdir("./12" [pid 5087] <... openat resumed>) = 3 [pid 5183] <... memfd_create resumed>) = 4 [pid 5090] getdents64(3, [pid 5183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... rmdir resumed>) = 0 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5183] <... mmap resumed>) = 0x7fc3fd400000 [pid 5090] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5088] mkdir("./13", 0777 [pid 5182] <... munmap resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] unlink("./13/binderfs") = 0 [pid 5089] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] close(3) = 0 [pid 5088] <... mkdir resumed>) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 5089] rmdir("./13" [pid 5182] ioctl(5, LOOP_SET_FD, 4 [pid 5089] <... rmdir resumed>) = 0 [pid 5182] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5182] ioctl(5, LOOP_CLR_FD [pid 5089] mkdir("./14", 0777 [pid 5182] <... ioctl resumed>) = 0 [pid 5089] <... mkdir resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5183] 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 5090] <... umount2 resumed>) = 0 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5089] <... openat resumed>) = 3 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5090] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... ioctl resumed>) = 0 [pid 5087] <... ioctl resumed>) = 0 [pid 5183] <... write resumed>) = 524288 [pid 5088] close(3 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... close resumed>) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5182] ioctl(5, LOOP_SET_FD, 4 [pid 5090] newfstatat(AT_FDCWD, "./13/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5182] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5090] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5184 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5182] close(5 [pid 5090] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5182] <... close resumed>) = 0 [pid 5090] <... openat resumed>) = 4 [pid 5089] <... ioctl resumed>) = 0 [pid 5182] close(4 [pid 5090] newfstatat(4, "", [pid 5182] <... close resumed>) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] getdents64(4, ./strace-static-x86_64: Process 5184 attached [pid 5184] set_robust_list(0x555560e9f660, 24 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5183] munmap(0x7fc3fd400000, 138412032 [pid 5182] exit_group(0 [pid 5090] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5183] <... munmap resumed>) = 0 [pid 5182] <... exit_group resumed>) = ? [pid 5090] close(4 [pid 5087] close(3 [pid 5089] close(3 [pid 5183] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5090] <... close resumed>) = 0 [pid 5089] <... close resumed>) = 0 [pid 5184] <... set_robust_list resumed>) = 0 [pid 5184] chdir("./13") = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5184] setpgid(0, 0) = 0 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5184] write(3, "1000", 4) = 4 [pid 5184] close(3) = 0 [pid 5184] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5090] rmdir("./13/bus" [pid 5087] <... close resumed>) = 0 [pid 5184] <... openat resumed>) = 3 [pid 5183] <... openat resumed>) = 5 [pid 5182] +++ exited with 0 +++ [pid 5090] <... rmdir resumed>) = 0 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5185 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5183] ioctl(5, LOOP_SET_FD, 4 [pid 5090] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5184] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5184] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5185 attached [pid 5184] memfd_create("syzkaller", 0 [pid 5185] set_robust_list(0x555560e9f660, 24 [pid 5090] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5185] <... set_robust_list resumed>) = 0 [pid 5185] chdir("./14" [pid 5086] umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5184] <... memfd_create resumed>) = 4 [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 116.883647][ T5098] I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [pid 5086] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5185] <... chdir resumed>) = 0 [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5185] setpgid(0, 0 [pid 5184] 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 5086] newfstatat(3, "", [pid 5185] <... setpgid resumed>) = 0 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5185] write(3, "1000", 4) = 4 [pid 5185] close(3) = 0 [pid 5185] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] unlink("./13/binderfs" [pid 5086] getdents64(3, [pid 5185] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048) = 0 [pid 5090] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 5186 attached [pid 5185] memfd_create("syzkaller", 0 [pid 5090] getdents64(3, [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5183] <... ioctl resumed>) = 0 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5186 [pid 5086] umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5186] set_robust_list(0x555560e9f660, 24 [pid 5183] close(4 [pid 5090] close(3 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5186] <... set_robust_list resumed>) = 0 [pid 5183] <... close resumed>) = 0 [pid 5086] newfstatat(AT_FDCWD, "./17/binderfs", [pid 5090] <... close resumed>) = 0 [pid 5186] chdir("./14" [pid 5185] <... memfd_create resumed>) = 4 [pid 5183] close(5 [pid 5090] rmdir("./13" [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5186] <... chdir resumed>) = 0 [pid 5183] <... close resumed>) = 0 [pid 5086] unlink("./17/binderfs" [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5090] <... rmdir resumed>) = 0 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5185] 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 5183] mkdir("./bus", 0777 [pid 5090] mkdir("./14", 0777 [pid 5086] <... unlink resumed>) = 0 [pid 5086] getdents64(3, [pid 5090] <... mkdir resumed>) = 0 [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] close(3) = 0 [pid 5086] rmdir("./17" [pid 5186] <... prctl resumed>) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5184] <... write resumed>) = 524288 [pid 5186] setpgid(0, 0 [pid 5185] <... write resumed>) = 524288 [pid 5184] munmap(0x7fc3fd400000, 138412032 [pid 5183] <... mkdir resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5086] <... rmdir resumed>) = 0 [pid 5186] <... setpgid resumed>) = 0 [pid 5184] <... munmap resumed>) = 0 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5086] mkdir("./18", 0777 [ 116.939938][ T5183] loop5: detected capacity change from 0 to 1024 [pid 5183] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5184] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 5 [pid 5086] <... mkdir resumed>) = 0 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5184] ioctl(5, LOOP_SET_FD, 4 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5186] <... openat resumed>) = 3 [pid 5183] <... mount resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5186] write(3, "1000", 4 [pid 5183] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5186] <... write resumed>) = 4 [pid 5186] close(3 [pid 5183] <... openat resumed>) = 4 [pid 5086] <... ioctl resumed>) = 0 [pid 5186] <... close resumed>) = 0 [pid 5086] close(3 [pid 5186] symlink("/dev/binderfs", "./binderfs" [pid 5183] chdir("./bus" [pid 5086] <... close resumed>) = 0 [pid 5186] <... symlink resumed>) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5183] <... chdir resumed>) = 0 [pid 5185] munmap(0x7fc3fd400000, 138412032./strace-static-x86_64: Process 5187 attached [pid 5186] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5185] <... munmap resumed>) = 0 [pid 5183] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5187] set_robust_list(0x555560e9f660, 24 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5187 [pid 5187] <... set_robust_list resumed>) = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5183] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5187] chdir("./18" [pid 5185] <... openat resumed>) = 5 [pid 5187] <... chdir resumed>) = 0 [pid 5185] ioctl(5, LOOP_SET_FD, 4 [pid 5183] exit_group(0 [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5090] <... ioctl resumed>) = 0 [pid 5183] <... exit_group resumed>) = ? [pid 5187] <... prctl resumed>) = 0 [pid 5183] +++ exited with 0 +++ [pid 5186] <... openat resumed>) = 3 [pid 5091] --- 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 5187] setpgid(0, 0) = 0 [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5187] write(3, "1000", 4 [pid 5184] <... ioctl resumed>) = 0 [pid 5187] <... write resumed>) = 4 [pid 5184] close(4 [pid 5187] close(3 [pid 5184] <... close resumed>) = 0 [pid 5187] <... close resumed>) = 0 [pid 5186] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5184] close(5) = 0 [pid 5184] mkdir("./bus", 0777 [pid 5186] <... ioctl resumed>) = 0 [pid 5187] symlink("/dev/binderfs", "./binderfs" [pid 5186] memfd_create("syzkaller", 0 [pid 5184] <... mkdir resumed>) = 0 [pid 5187] <... symlink resumed>) = 0 [pid 5186] <... memfd_create resumed>) = 4 [pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5184] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5187] <... openat resumed>) = 3 [pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5091] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5186] <... mmap resumed>) = 0x7fc3fd400000 [pid 5091] <... openat resumed>) = 3 [pid 5091] newfstatat(3, "", [pid 5187] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5186] 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 5185] <... ioctl resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5187] <... ioctl resumed>) = 0 [pid 5185] close(4 [pid 5091] getdents64(3, [pid 5187] memfd_create("syzkaller", 0 [pid 5185] <... close resumed>) = 0 [pid 5187] <... memfd_create resumed>) = 4 [pid 5185] close(5 [pid 5090] close(3) = 0 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5185] <... close resumed>) = 0 [pid 5187] <... mmap resumed>) = 0x7fc3fd400000 [pid 5185] mkdir("./bus", 0777 [pid 5184] <... mount resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5187] 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 5185] <... mkdir resumed>) = 0 [pid 5184] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [ 117.002328][ T5184] loop2: detected capacity change from 0 to 1024 [ 117.026468][ T5185] loop3: detected capacity change from 0 to 1024 [pid 5091] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5185] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5184] <... openat resumed>) = 4 [pid 5184] chdir("./bus") = 0 [pid 5186] <... write resumed>) = 524288 [pid 5184] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 5188 attached ) = -1 EBUSY (Device or resource busy) [pid 5188] set_robust_list(0x555560e9f660, 24 [pid 5185] <... mount resumed>) = 0 [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5188 [pid 5184] exit_group(0 [pid 5188] <... set_robust_list resumed>) = 0 [pid 5186] munmap(0x7fc3fd400000, 138412032 [pid 5091] <... umount2 resumed>) = 0 [pid 5188] chdir("./14") = 0 [pid 5185] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5184] <... exit_group resumed>) = ? [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5186] <... munmap resumed>) = 0 [pid 5185] <... openat resumed>) = 4 [pid 5184] +++ exited with 0 +++ [pid 5091] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5188] <... prctl resumed>) = 0 [pid 5186] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5185] chdir("./bus" [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5184, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5188] setpgid(0, 0 [pid 5091] newfstatat(AT_FDCWD, "./12/bus", [pid 5188] <... setpgid resumed>) = 0 [pid 5186] <... openat resumed>) = 5 [pid 5185] <... chdir resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5186] ioctl(5, LOOP_SET_FD, 4 [pid 5185] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... openat resumed>) = 3 [pid 5185] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] newfstatat(3, "", [pid 5188] <... openat resumed>) = 3 [pid 5187] <... write resumed>) = 524288 [pid 5185] exit_group(0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] getdents64(3, [pid 5188] write(3, "1000", 4 [pid 5185] <... exit_group resumed>) = ? [pid 5091] <... openat resumed>) = 4 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5188] <... write resumed>) = 4 [pid 5185] +++ exited with 0 +++ [pid 5091] newfstatat(4, "", [pid 5088] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5187] munmap(0x7fc3fd400000, 138412032 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5088] <... umount2 resumed>) = 0 [pid 5187] <... munmap resumed>) = 0 [pid 5188] close(3 [pid 5091] getdents64(4, [pid 5188] <... close resumed>) = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5188] symlink("/dev/binderfs", "./binderfs" [pid 5091] getdents64(4, [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5186] <... ioctl resumed>) = 0 [pid 5188] <... symlink resumed>) = 0 [pid 5186] close(4 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5089] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5186] <... close resumed>) = 0 [pid 5091] close(4 [pid 5089] <... openat resumed>) = 3 [pid 5186] close(5 [pid 5091] <... close resumed>) = 0 [pid 5089] newfstatat(3, "", [pid 5186] <... close resumed>) = 0 [pid 5091] rmdir("./12/bus" [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5187] <... openat resumed>) = 5 [pid 5091] <... rmdir resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] newfstatat(AT_FDCWD, "./13/bus", [pid 5187] ioctl(5, LOOP_SET_FD, 4 [pid 5186] mkdir("./bus", 0777 [pid 5091] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] getdents64(3, [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5187] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5088] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5187] ioctl(5, LOOP_CLR_FD [pid 5186] <... mkdir resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5089] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5187] <... ioctl resumed>) = 0 [pid 5186] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5091] unlink("./12/binderfs" [pid 5088] <... openat resumed>) = 4 [ 117.142356][ T5186] loop1: detected capacity change from 0 to 1024 [pid 5188] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] <... unlink resumed>) = 0 [pid 5088] newfstatat(4, "", [pid 5091] getdents64(3, [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5088] getdents64(4, [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5187] ioctl(5, LOOP_SET_FD, 4 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5187] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] close(4 [pid 5187] close(5 [pid 5091] close(3 [pid 5088] <... close resumed>) = 0 [pid 5187] <... close resumed>) = 0 [pid 5088] rmdir("./13/bus" [pid 5091] <... close resumed>) = 0 [pid 5091] rmdir("./12" [pid 5187] close(4 [pid 5088] <... rmdir resumed>) = 0 [pid 5188] <... ioctl resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5089] <... umount2 resumed>) = 0 [pid 5088] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5188] memfd_create("syzkaller", 0 [pid 5088] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5188] <... memfd_create resumed>) = 4 [pid 5091] mkdir("./13", 0777 [pid 5088] unlink("./13/binderfs") = 0 [pid 5091] <... mkdir resumed>) = 0 [pid 5088] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] close(3) = 0 [pid 5088] rmdir("./13" [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5088] mkdir("./14", 0777 [pid 5188] <... mmap resumed>) = 0x7fc3fd400000 [pid 5088] <... mkdir resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5187] <... close resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5088] ioctl(3, LOOP_CLR_FD) = 0 [pid 5088] close(3) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5089] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5189 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./14/bus", [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 5189 attached [pid 5189] set_robust_list(0x555560e9f660, 24) = 0 [pid 5188] 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 5187] exit_group(0 [pid 5189] chdir("./14" [pid 5187] <... exit_group resumed>) = ? [pid 5091] <... openat resumed>) = 3 [pid 5189] <... chdir resumed>) = 0 [pid 5187] +++ exited with 0 +++ [pid 5089] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5189] setpgid(0, 0) = 0 [pid 5189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5189] write(3, "1000", 4) = 4 [pid 5189] close(3) = 0 [pid 5189] symlink("/dev/binderfs", "./binderfs" [pid 5188] <... write resumed>) = 524288 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5187, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5189] <... symlink resumed>) = 0 [pid 5186] <... mount resumed>) = 0 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5089] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5186] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5091] <... ioctl resumed>) = 0 [pid 5089] <... openat resumed>) = 4 [pid 5086] umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5189] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5186] <... openat resumed>) = 4 [pid 5091] close(3 [pid 5089] newfstatat(4, "", [pid 5086] <... openat resumed>) = 3 [pid 5086] newfstatat(3, "", [pid 5189] <... openat resumed>) = 3 [pid 5186] chdir("./bus" [pid 5091] <... close resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5189] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5186] <... chdir resumed>) = 0 [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5089] getdents64(4, [pid 5086] getdents64(3, [pid 5189] <... ioctl resumed>) = 0 [pid 5186] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5086] umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5189] memfd_create("syzkaller", 0 [pid 5186] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] getdents64(4, [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./18/binderfs", [pid 5189] <... memfd_create resumed>) = 4 [pid 5186] exit_group(0 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5190 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5186] <... exit_group resumed>) = ? [pid 5089] close(4 [pid 5086] unlink("./18/binderfs" [pid 5189] <... mmap resumed>) = 0x7fc3fd400000 [pid 5188] munmap(0x7fc3fd400000, 138412032./strace-static-x86_64: Process 5190 attached [pid 5189] 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 5188] <... munmap resumed>) = 0 [pid 5089] <... close resumed>) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5086] getdents64(3, [pid 5190] set_robust_list(0x555560e9f660, 24 [pid 5186] +++ exited with 0 +++ [pid 5089] rmdir("./14/bus" [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5086] close(3 [pid 5190] <... set_robust_list resumed>) = 0 [pid 5188] <... openat resumed>) = 5 [pid 5089] <... rmdir resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5188] ioctl(5, LOOP_SET_FD, 4 [pid 5087] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] rmdir("./18" [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5190] chdir("./13" [pid 5189] <... write resumed>) = 524288 [pid 5089] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... rmdir resumed>) = 0 [pid 5190] <... chdir resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... openat resumed>) = 3 [pid 5086] mkdir("./19", 0777 [pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5089] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5190] <... prctl resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5190] setpgid(0, 0 [pid 5089] unlink("./14/binderfs" [pid 5190] <... setpgid resumed>) = 0 [pid 5089] <... unlink resumed>) = 0 [pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] getdents64(3, [pid 5190] <... openat resumed>) = 3 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] close(3) = 0 [pid 5089] rmdir("./14") = 0 [pid 5190] write(3, "1000", 4 [pid 5089] mkdir("./15", 0777) = 0 [pid 5190] <... write resumed>) = 4 [pid 5190] close(3) = 0 [pid 5190] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5087] newfstatat(3, "", [pid 5086] <... mkdir resumed>) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5087] getdents64(3, [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5188] <... ioctl resumed>) = 0 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5086] <... openat resumed>) = 3 [pid 5190] <... openat resumed>) = 3 [pid 5188] close(4 [pid 5087] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5190] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5188] <... close resumed>) = 0 [pid 5086] <... ioctl resumed>) = 0 [pid 5190] <... ioctl resumed>) = 0 [pid 5189] munmap(0x7fc3fd400000, 138412032 [pid 5188] close(5 [pid 5086] close(3 [pid 5190] memfd_create("syzkaller", 0 [pid 5189] <... munmap resumed>) = 0 [pid 5188] <... close resumed>) = 0 [pid 5190] <... memfd_create resumed>) = 4 [pid 5188] mkdir("./bus", 0777 [pid 5086] <... close resumed>) = 0 [pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5188] <... mkdir resumed>) = 0 [pid 5190] <... mmap resumed>) = 0x7fc3fd400000 [pid 5189] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5188] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5189] <... openat resumed>) = 5 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5191 [pid 5189] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 5191 attached [pid 5190] 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 5191] set_robust_list(0x555560e9f660, 24) = 0 [pid 5191] chdir("./19") = 0 [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5191] setpgid(0, 0) = 0 [pid 5190] <... write resumed>) = 524288 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5191] write(3, "1000", 4) = 4 [pid 5191] close(3) = 0 [pid 5089] <... ioctl resumed>) = 0 [pid 5191] symlink("/dev/binderfs", "./binderfs" [pid 5087] <... umount2 resumed>) = 0 [pid 5191] <... symlink resumed>) = 0 [pid 5087] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5191] <... openat resumed>) = 3 [pid 5087] newfstatat(AT_FDCWD, "./14/bus", [pid 5191] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5191] <... ioctl resumed>) = 0 [pid 5189] <... ioctl resumed>) = 0 [pid 5188] <... mount resumed>) = 0 [pid 5087] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5191] memfd_create("syzkaller", 0 [pid 5189] close(4 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5189] <... close resumed>) = 0 [pid 5087] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5191] <... memfd_create resumed>) = 4 [pid 5189] close(5 [pid 5087] <... openat resumed>) = 4 [ 117.302126][ T5188] loop4: detected capacity change from 0 to 1024 [ 117.331016][ T5189] loop2: detected capacity change from 0 to 1024 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5189] <... close resumed>) = 0 [pid 5087] newfstatat(4, "", [pid 5191] <... mmap resumed>) = 0x7fc3fd400000 [pid 5189] mkdir("./bus", 0777 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5191] 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 5189] <... mkdir resumed>) = 0 [pid 5188] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5087] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5188] <... openat resumed>) = 4 [pid 5087] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5087] close(4) = 0 [pid 5190] munmap(0x7fc3fd400000, 138412032 [pid 5087] rmdir("./14/bus" [pid 5190] <... munmap resumed>) = 0 [pid 5188] chdir("./bus" [pid 5087] <... rmdir resumed>) = 0 [pid 5189] mount("/dev/loop2", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5188] <... chdir resumed>) = 0 [pid 5087] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5190] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5189] <... mount resumed>) = 0 [pid 5089] close(3 [pid 5190] <... openat resumed>) = 5 [pid 5189] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5189] <... openat resumed>) = 4 [pid 5188] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5089] <... close resumed>) = 0 [pid 5087] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5190] ioctl(5, LOOP_SET_FD, 4 [pid 5189] chdir("./bus" [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5188] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5189] <... chdir resumed>) = 0 [pid 5191] <... write resumed>) = 524288 [pid 5189] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] unlink("./14/binderfs" [pid 5188] exit_group(0 [pid 5087] <... unlink resumed>) = 0 [pid 5188] <... exit_group resumed>) = ? [pid 5189] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5087] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5087] close(3) = 0 [pid 5087] rmdir("./14") = 0 [pid 5189] exit_group(0) = ? [pid 5188] +++ exited with 0 +++ [pid 5087] mkdir("./15", 0777) = 0 [pid 5189] +++ exited with 0 +++ [pid 5090] --- 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 5090] restart_syscall(<... resuming interrupted clone ...> [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5189, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5090] <... restart_syscall resumed>) = 0 [pid 5088] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5192 ./strace-static-x86_64: Process 5192 attached [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... openat resumed>) = 3 [pid 5090] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5192] set_robust_list(0x555560e9f660, 24) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... openat resumed>) = 3 [pid 5087] ioctl(3, LOOP_CLR_FD) = 0 [pid 5087] close(3) = 0 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5190] <... ioctl resumed>) = 0 [pid 5190] close(4) = 0 [pid 5192] chdir("./15" [pid 5190] close(5 [pid 5090] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] newfstatat(3, "", [pid 5191] munmap(0x7fc3fd400000, 138412032 [pid 5192] <... chdir resumed>) = 0 [pid 5191] <... munmap resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5193 [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5090] newfstatat(3, "", [pid 5088] getdents64(3, [pid 5192] <... prctl resumed>) = 0 [pid 5192] setpgid(0, 0 [pid 5190] <... close resumed>) = 0 [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5192] <... setpgid resumed>) = 0 [pid 5088] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5193 attached [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5190] mkdir("./bus", 0777 [pid 5193] set_robust_list(0x555560e9f660, 24 [pid 5192] <... openat resumed>) = 3 [pid 5191] <... openat resumed>) = 5 [pid 5190] <... mkdir resumed>) = 0 [pid 5193] <... set_robust_list resumed>) = 0 [pid 5191] ioctl(5, LOOP_SET_FD, 4 [pid 5193] chdir("./15" [pid 5191] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5193] <... chdir resumed>) = 0 [pid 5191] ioctl(5, LOOP_CLR_FD) = 0 [pid 5193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5193] setpgid(0, 0 [ 117.398789][ T5190] loop5: detected capacity change from 0 to 1024 [pid 5192] write(3, "1000", 4 [pid 5193] <... setpgid resumed>) = 0 [pid 5192] <... write resumed>) = 4 [pid 5190] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5090] getdents64(3, [pid 5088] <... umount2 resumed>) = 0 [pid 5192] close(3 [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5088] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5191] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 5193] <... openat resumed>) = 3 [pid 5191] close(5) = 0 [pid 5191] close(4 [pid 5193] write(3, "1000", 4 [pid 5192] <... close resumed>) = 0 [pid 5090] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5193] <... write resumed>) = 4 [pid 5088] newfstatat(AT_FDCWD, "./14/bus", [pid 5193] close(3 [pid 5192] symlink("/dev/binderfs", "./binderfs" [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5193] <... close resumed>) = 0 [pid 5192] <... symlink resumed>) = 0 [pid 5088] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5193] symlink("/dev/binderfs", "./binderfs" [pid 5192] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5193] <... symlink resumed>) = 0 [pid 5192] <... openat resumed>) = 3 [pid 5088] <... openat resumed>) = 4 [pid 5193] openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [pid 5192] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5088] newfstatat(4, "", [pid 5193] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5192] <... ioctl resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] getdents64(4, [pid 5193] <... ioctl resumed>) = 0 [pid 5190] <... mount resumed>) = 0 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5193] memfd_create("syzkaller", 0 [pid 5190] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5088] getdents64(4, [pid 5193] <... memfd_create resumed>) = 4 [pid 5190] <... openat resumed>) = 4 [pid 5088] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5190] chdir("./bus" [pid 5088] close(4 [pid 5193] <... mmap resumed>) = 0x7fc3fd400000 [pid 5190] <... chdir resumed>) = 0 [pid 5193] 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 5190] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5088] <... close resumed>) = 0 [pid 5190] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] rmdir("./14/bus" [pid 5192] memfd_create("syzkaller", 0 [pid 5191] <... close resumed>) = 0 [pid 5190] exit_group(0 [pid 5191] exit_group(0 [pid 5190] <... exit_group resumed>) = ? [pid 5192] <... memfd_create resumed>) = 4 [pid 5191] <... exit_group resumed>) = ? [pid 5190] +++ exited with 0 +++ [pid 5088] <... rmdir resumed>) = 0 [pid 5192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5191] +++ exited with 0 +++ [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5190, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5088] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5193] <... write resumed>) = 524288 [pid 5192] <... mmap resumed>) = 0x7fc3fd400000 [pid 5090] <... umount2 resumed>) = 0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5091] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5192] 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 5091] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] unlink("./14/binderfs") = 0 [pid 5088] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] close(3 [pid 5086] umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] <... openat resumed>) = 3 [pid 5091] newfstatat(3, "", [pid 5088] <... close resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] rmdir("./14" [pid 5086] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5193] munmap(0x7fc3fd400000, 138412032) = 0 [pid 5193] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 5 [pid 5193] ioctl(5, LOOP_SET_FD, 4 [pid 5090] newfstatat(AT_FDCWD, "./14/bus", [pid 5088] <... rmdir resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5091] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5088] mkdir("./15", 0777 [pid 5086] newfstatat(3, "", [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5192] <... write resumed>) = 524288 [pid 5091] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... mkdir resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5086] umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... openat resumed>) = 3 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5086] newfstatat(AT_FDCWD, "./19/binderfs", [pid 5090] <... openat resumed>) = 4 [pid 5088] <... ioctl resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] newfstatat(4, "", [pid 5088] close(3 [pid 5086] unlink("./19/binderfs" [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] <... close resumed>) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] getdents64(3, [pid 5090] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5086] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] getdents64(4, [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5194 [pid 5086] close(3./strace-static-x86_64: Process 5194 attached [pid 5192] munmap(0x7fc3fd400000, 138412032 [pid 5086] <... close resumed>) = 0 [pid 5193] <... ioctl resumed>) = 0 [pid 5193] close(4) = 0 [pid 5193] close(5 [pid 5192] <... munmap resumed>) = 0 [pid 5086] rmdir("./19" [pid 5193] <... close resumed>) = 0 [pid 5193] mkdir("./bus", 0777) = 0 [pid 5194] set_robust_list(0x555560e9f660, 24 [pid 5192] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5086] <... rmdir resumed>) = 0 [pid 5090] close(4 [ 117.542957][ T5102] ------------[ cut here ]------------ [ 117.547439][ T5193] loop1: detected capacity change from 0 to 1024 [ 117.549391][ T5102] kernel BUG at arch/x86/mm/physaddr.c:28! [pid 5086] mkdir("./20", 0777 [pid 5192] <... openat resumed>) = 5 [pid 5086] <... mkdir resumed>) = 0 [ 117.600463][ T5192] loop3: detected capacity change from 0 to 1024 [ 117.614999][ T5102] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 117.621637][ T5102] CPU: 0 PID: 5102 Comm: udevd Tainted: G B 6.9.0-rc4-syzkaller-00329-g48cf398f15fc #0 [ 117.632692][ T5102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 117.642798][ T5102] RIP: 0010:__phys_addr+0xd8/0x150 [ 117.647957][ T5102] Code: 48 d3 e8 48 89 c5 48 89 c6 e8 04 83 50 00 48 85 ed 75 11 e8 ea 87 50 00 48 89 d8 5b 5d 41 5c e9 e9 c4 d1 09 e8 d9 87 50 00 90 <0f> 0b e8 d1 87 50 00 48 c7 c0 10 40 7a 8d 48 ba 00 00 00 00 00 fc [ 117.667604][ T5102] RSP: 0018:ffffc90004b67c50 EFLAGS: 00010293 [ 117.673720][ T5102] RAX: 0000000000000000 RBX: 0001784004002b48 RCX: ffffffff813e7ba0 [ 117.681719][ T5102] RDX: ffff8880235e8000 RSI: ffffffff813e7c27 RDI: 0000000000000006 [ 117.690151][ T5102] RBP: 000100c084002b48 R08: 0000000000000006 R09: 000100c084002b48 [ 117.698144][ T5102] R10: 0001784004002b48 R11: dffffc0000000000 R12: 0000000000000000 [ 117.706147][ T5102] R13: 0000000000000000 R14: ffffc90004b67ca8 R15: ffff88802ebe4c00 [ 117.714144][ T5102] FS: 00007faaeae42c80(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 117.723101][ T5102] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 117.729713][ T5102] CR2: 00007fc4059d04b0 CR3: 000000007a2a4000 CR4: 0000000000350ef0 [ 117.737734][ T5102] Call Trace: [ 117.741041][ T5102] [ 117.743988][ T5102] ? show_regs+0x8c/0xa0 [ 117.748297][ T5102] ? die+0x36/0xa0 [ 117.752051][ T5102] ? do_trap+0x232/0x430 [ 117.756345][ T5102] ? __phys_addr+0xd8/0x150 [ 117.760891][ T5102] ? rcu_is_watching+0x12/0xc0 [ 117.765694][ T5102] ? __phys_addr+0xd8/0x150 [ 117.770226][ T5102] ? do_error_trap+0xf4/0x230 [ 117.774974][ T5102] ? __phys_addr+0xd8/0x150 [ 117.779510][ T5102] ? handle_invalid_op+0x34/0x40 [ 117.784486][ T5102] ? __phys_addr+0xd8/0x150 [ 117.789040][ T5102] ? exc_invalid_op+0x2e/0x50 [ 117.793745][ T5102] ? asm_exc_invalid_op+0x1a/0x20 [ 117.798804][ T5102] ? __phys_addr+0x50/0x150 [ 117.803433][ T5102] ? __phys_addr+0xd7/0x150 [ 117.807967][ T5102] ? __phys_addr+0xd8/0x150 [ 117.812502][ T5102] qlist_free_all+0x6a/0x140 [ 117.817155][ T5102] kasan_quarantine_reduce+0x192/0x1e0 [ 117.822695][ T5102] __kasan_slab_alloc+0x69/0x90 [ 117.827596][ T5102] kmem_cache_alloc+0x136/0x320 [ 117.832498][ T5102] getname_flags.part.0+0x50/0x4f0 [ 117.837657][ T5102] ? srso_alias_return_thunk+0x5/0xfbef5 [ 117.843357][ T5102] getname+0x8f/0xe0 [ 117.847298][ T5102] do_sys_openat2+0x104/0x1e0 [ 117.852020][ T5102] ? __pfx_do_sys_openat2+0x10/0x10 [ 117.857282][ T5102] __x64_sys_openat+0x175/0x210 [ 117.862177][ T5102] ? __pfx___x64_sys_openat+0x10/0x10 [ 117.867773][ T5102] ? srso_alias_return_thunk+0x5/0xfbef5 [ 117.873441][ T5102] ? rcu_is_watching+0x12/0xc0 [ 117.878253][ T5102] ? srso_alias_return_thunk+0x5/0xfbef5 [ 117.883917][ T5102] ? rcu_is_watching+0x12/0xc0 [ 117.888982][ T5102] do_syscall_64+0xcf/0x260 [ 117.893783][ T5102] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 117.899834][ T5102] RIP: 0033:0x7faaeaf169a4 [ 117.904286][ T5102] Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 [ 117.925517][ T5102] RSP: 002b:00007ffe96838df0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 117.933965][ T5102] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007faaeaf169a4 [ 117.941965][ T5102] RDX: 0000000000080241 RSI: 00007ffe96839338 RDI: 00000000ffffff9c [pid 5193] mount("/dev/loop1", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5090] <... close resumed>) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5194] <... set_robust_list resumed>) = 0 [pid 5192] ioctl(5, LOOP_SET_FD, 4 [pid 5091] <... umount2 resumed>) = 0 [pid 5090] rmdir("./14/bus" [pid 5194] chdir("./15" [pid 5192] <... ioctl resumed>) = 0 [pid 5091] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... rmdir resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5192] close(4 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5192] <... close resumed>) = 0 [pid 5091] newfstatat(AT_FDCWD, "./13/bus", [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] <... ioctl resumed>) = 0 [pid 5192] close(5 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5192] <... close resumed>) = 0 [pid 5091] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] close(3 [pid 5192] mkdir("./bus", 0777 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5192] <... mkdir resumed>) = 0 [pid 5090] unlink("./14/binderfs" [pid 5086] <... close resumed>) = 0 [pid 5192] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5091] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] <... unlink resumed>) = 0 [ 117.949968][ T5102] RBP: 00007ffe96839338 R08: 0000000000000004 R09: 0000000000000001 [ 117.957965][ T5102] R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000080241 [ 117.965961][ T5102] R13: 00005593a839c72e R14: 0000000000000001 R15: 00005593b4891910 [ 117.974085][ T5102] [ 117.977116][ T5102] Modules linked in: [ 117.983711][ T5102] ---[ end trace 0000000000000000 ]--- [ 117.989465][ T5102] RIP: 0010:__phys_addr+0xd8/0x150 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5091] <... openat resumed>) = 4 [pid 5090] getdents64(3, [pid 5091] newfstatat(4, "", [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5194] <... chdir resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5195 [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] getdents64(4, [pid 5090] close(3 [pid 5194] <... prctl resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... close resumed>) = 0 [pid 5194] setpgid(0, 0 [pid 5091] getdents64(4, [pid 5090] rmdir("./14" [pid 5194] <... setpgid resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] <... rmdir resumed>) = 0 [pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] close(4 [pid 5090] mkdir("./15", 0777 [pid 5194] <... openat resumed>) = 3 [pid 5091] <... close resumed>) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5194] write(3, "1000", 4 [pid 5091] rmdir("./13/bus" [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5194] <... write resumed>) = 4 [pid 5091] <... rmdir resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5194] close(3 [pid 5091] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5195 attached [pid 5194] <... close resumed>) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... ioctl resumed>) = 0 [pid 5194] symlink("/dev/binderfs", "./binderfs" [pid 5091] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5090] close(3 [pid 5195] set_robust_list(0x555560e9f660, 24 [pid 5194] <... symlink resumed>) = 0 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... close resumed>) = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5091] unlink("./13/binderfs" [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5195] <... set_robust_list resumed>) = 0 [pid 5194] <... openat resumed>) = 3 [pid 5195] chdir("./20" [pid 5194] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5091] <... unlink resumed>) = 0 [pid 5195] <... chdir resumed>) = 0 [pid 5194] <... ioctl resumed>) = 0 [pid 5091] getdents64(3, [pid 5195] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5194] memfd_create("syzkaller", 0 [pid 5192] <... mount resumed>) = 0 [pid 5091] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5194] <... memfd_create resumed>) = 4 [pid 5192] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [ 118.003816][ T5102] Code: 48 d3 e8 48 89 c5 48 89 c6 e8 04 83 50 00 48 85 ed 75 11 e8 ea 87 50 00 48 89 d8 5b 5d 41 5c e9 e9 c4 d1 09 e8 d9 87 50 00 90 <0f> 0b e8 d1 87 50 00 48 c7 c0 10 40 7a 8d 48 ba 00 00 00 00 00 fc [pid 5091] close(3 [pid 5195] <... prctl resumed>) = 0 [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5192] <... openat resumed>) = 4 [pid 5091] <... close resumed>) = 0 [pid 5195] setpgid(0, 0 [pid 5194] <... mmap resumed>) = 0x7fc3fd400000 [pid 5192] chdir("./bus" [pid 5091] rmdir("./13" [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5196 [pid 5194] 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 5192] <... chdir resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5192] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] mkdir("./14", 0777 [pid 5192] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] <... mkdir resumed>) = 0 [pid 5192] exit_group(0 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5192] <... exit_group resumed>) = ? [pid 5091] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5196 attached [pid 5195] <... setpgid resumed>) = 0 [pid 5091] ioctl(3, LOOP_CLR_FD [pid 5195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... ioctl resumed>) = 0 [pid 5196] set_robust_list(0x555560e9f660, 24 [pid 5195] <... openat resumed>) = 3 [pid 5091] close(3 [pid 5196] <... set_robust_list resumed>) = 0 [pid 5195] write(3, "1000", 4 [pid 5194] <... write resumed>) = 524288 [pid 5091] <... close resumed>) = 0 [pid 5196] chdir("./15" [pid 5195] <... write resumed>) = 4 [pid 5193] <... mount resumed>) = 0 [pid 5192] +++ exited with 0 +++ [pid 5091] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5196] <... chdir resumed>) = 0 [pid 5195] close(3 [pid 5193] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5089] --- 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 5196] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5195] <... close resumed>) = 0 [pid 5193] <... openat resumed>) = 4 [pid 5195] symlink("/dev/binderfs", "./binderfs" [pid 5196] <... prctl resumed>) = 0 [pid 5193] chdir("./bus" [pid 5196] setpgid(0, 0 [pid 5195] <... symlink resumed>) = 0 [pid 5193] <... chdir resumed>) = 0 [pid 5196] <... setpgid resumed>) = 0 [pid 5195] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5193] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5089] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5195] <... openat resumed>) = 3 [pid 5193] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5196] <... openat resumed>) = 3 [pid 5193] exit_group(0 [pid 5089] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5196] write(3, "1000", 4 [pid 5195] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5193] <... exit_group resumed>) = ? [pid 5089] <... openat resumed>) = 3 [pid 5196] <... write resumed>) = 4 [pid 5195] <... ioctl resumed>) = 0 [pid 5089] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5196] close(3 [pid 5195] memfd_create("syzkaller", 0 [pid 5089] getdents64(3, [pid 5196] <... close resumed>) = 0 [pid 5195] <... memfd_create resumed>) = 4 [pid 5091] <... clone resumed>, child_tidptr=0x555560e9f650) = 5197 [pid 5089] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5196] symlink("/dev/binderfs", "./binderfs" [pid 5195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5196] <... symlink resumed>) = 0 [pid 5195] <... mmap resumed>) = 0x7fc3fd400000 [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDONLY./strace-static-x86_64: Process 5197 attached ) = 3 [pid 5195] 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 5194] munmap(0x7fc3fd400000, 138412032 [pid 5193] +++ exited with 0 +++ [pid 5089] <... umount2 resumed>) = 0 [pid 5197] set_robust_list(0x555560e9f660, 24 [pid 5196] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5194] <... munmap resumed>) = 0 [pid 5197] <... set_robust_list resumed>) = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5196] <... ioctl resumed>) = 0 [pid 5197] chdir("./14" [pid 5194] <... openat resumed>) = 5 [pid 5089] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5193, si_uid=0, si_status=0, si_utime=0, si_stime=39 /* 0.39 s */} --- [pid 5197] <... chdir resumed>) = 0 [pid 5196] memfd_create("syzkaller", 0 [pid 5194] ioctl(5, LOOP_SET_FD, 4 [pid 5087] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5197] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5196] <... memfd_create resumed>) = 4 [pid 5194] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] newfstatat(AT_FDCWD, "./15/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5194] ioctl(5, LOOP_CLR_FD [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5197] <... prctl resumed>) = 0 [pid 5194] <... ioctl resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5197] setpgid(0, 0 [pid 5089] <... openat resumed>) = 4 [pid 5089] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] getdents64(4, 0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5089] getdents64(4, [pid 5197] <... setpgid resumed>) = 0 [pid 5089] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] close(4 [pid 5197] <... openat resumed>) = 3 [pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] <... close resumed>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5197] write(3, "1000", 4 [pid 5194] ioctl(5, LOOP_SET_FD, 4 [pid 5089] rmdir("./15/bus" [pid 5197] <... write resumed>) = 4 [pid 5196] <... mmap resumed>) = 0x7fc3fd400000 [pid 5194] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] <... rmdir resumed>) = 0 [pid 5087] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5197] close(3 [pid 5194] close(5 [pid 5089] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5197] <... close resumed>) = 0 [pid 5194] <... close resumed>) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... openat resumed>) = 3 [pid 5197] symlink("/dev/binderfs", "./binderfs" [pid 5194] close(4 [pid 5089] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5197] <... symlink resumed>) = 0 [pid 5194] <... close resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] newfstatat(3, "", [pid 5197] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5089] unlink("./15/binderfs" [pid 5196] 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 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... unlink resumed>) = 0 [pid 5087] getdents64(3, [pid 5089] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5089] close(3) = 0 [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5089] rmdir("./15") = 0 [pid 5197] <... openat resumed>) = 3 [pid 5195] <... write resumed>) = 524288 [pid 5089] mkdir("./16", 0777 [pid 5087] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5197] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5089] <... mkdir resumed>) = 0 [pid 5197] <... ioctl resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5197] memfd_create("syzkaller", 0) = 4 [pid 5197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5197] 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 5089] <... openat resumed>) = 3 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5195] munmap(0x7fc3fd400000, 138412032 [pid 5089] <... ioctl resumed>) = 0 [pid 5089] close(3 [pid 5195] <... munmap resumed>) = 0 [ 118.135346][ T5102] RSP: 0018:ffffc90004b67c50 EFLAGS: 00010293 [ 118.142280][ T5102] RAX: 0000000000000000 RBX: 0001784004002b48 RCX: ffffffff813e7ba0 [pid 5195] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5194] exit_group(0 [pid 5089] <... close resumed>) = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5196] <... write resumed>) = 524288 [pid 5195] <... openat resumed>) = 5 [pid 5194] <... exit_group resumed>) = ? [pid 5195] ioctl(5, LOOP_SET_FD, 4 [pid 5087] <... umount2 resumed>) = 0 [pid 5195] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5087] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5195] ioctl(5, LOOP_CLR_FD [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5195] <... ioctl resumed>) = 0 [pid 5089] <... clone resumed>, child_tidptr=0x555560e9f650) = 5198 [pid 5194] +++ exited with 0 +++ [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5088] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5088] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] getdents64(3, 0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5088] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] newfstatat(AT_FDCWD, "./15/bus", [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5197] <... write resumed>) = 524288 [pid 5088] unlink("./15/binderfs") = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 5198 attached [pid 5196] munmap(0x7fc3fd400000, 138412032 [pid 5087] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5196] <... munmap resumed>) = 0 [pid 5088] getdents64(3, [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5198] set_robust_list(0x555560e9f660, 24 [pid 5195] ioctl(5, LOOP_SET_FD, 4 [pid 5198] <... set_robust_list resumed>) = 0 [pid 5087] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5088] close(3) = 0 [pid 5088] rmdir("./15") = 0 [pid 5088] mkdir("./16", 0777) = 0 [pid 5198] chdir("./16" [pid 5196] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5195] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] <... openat resumed>) = 4 [pid 5088] <... openat resumed>) = 3 [pid 5088] ioctl(3, LOOP_CLR_FD) = 0 [pid 5197] munmap(0x7fc3fd400000, 138412032 [pid 5088] close(3 [pid 5197] <... munmap resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5198] <... chdir resumed>) = 0 [pid 5195] close(5 [pid 5087] newfstatat(4, "", [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5196] <... openat resumed>) = 5 [pid 5195] <... close resumed>) = 0 [pid 5198] <... prctl resumed>) = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5196] ioctl(5, LOOP_SET_FD, 4 [pid 5195] close(4 [pid 5088] <... clone resumed>, child_tidptr=0x555560e9f650) = 5199 [pid 5195] <... close resumed>) = 0 [pid 5197] <... openat resumed>) = 5 [pid 5197] ioctl(5, LOOP_SET_FD, 4 [pid 5198] setpgid(0, 0 [pid 5195] exit_group(0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5198] <... setpgid resumed>) = 0 [pid 5197] <... ioctl resumed>) = 0 [pid 5197] close(4) = 0 [pid 5197] close(5) = 0 [pid 5197] mkdir("./bus", 0777 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5195] <... exit_group resumed>) = ? [pid 5087] getdents64(4, ./strace-static-x86_64: Process 5199 attached [pid 5197] <... mkdir resumed>) = 0 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5199] set_robust_list(0x555560e9f660, 24 [pid 5198] <... openat resumed>) = 3 [pid 5197] mount("/dev/loop5", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5196] <... ioctl resumed>) = 0 [pid 5195] +++ exited with 0 +++ [pid 5087] getdents64(4, [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5195, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [ 118.235814][ T5102] RDX: ffff8880235e8000 RSI: ffffffff813e7c27 RDI: 0000000000000006 [ 118.246577][ T5102] RBP: 000100c084002b48 R08: 0000000000000006 R09: 000100c084002b48 [ 118.271782][ T5196] loop4: detected capacity change from 0 to 1024 [ 118.276747][ T5197] loop5: detected capacity change from 0 to 1024 [pid 5199] <... set_robust_list resumed>) = 0 [pid 5198] write(3, "1000", 4 [pid 5196] close(4 [pid 5087] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5198] <... write resumed>) = 4 [pid 5196] <... close resumed>) = 0 [pid 5199] chdir("./16" [pid 5198] close(3 [pid 5196] close(5 [pid 5087] close(4 [pid 5086] umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5199] <... chdir resumed>) = 0 [pid 5196] <... close resumed>) = 0 [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5198] <... close resumed>) = 0 [pid 5196] mkdir("./bus", 0777 [pid 5087] <... close resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5086] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 3 entries */, 32768) = 80 [pid 5086] umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] unlink("./20/binderfs") = 0 [pid 5086] getdents64(3, 0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5086] close(3) = 0 [pid 5199] <... prctl resumed>) = 0 [pid 5198] symlink("/dev/binderfs", "./binderfs" [pid 5196] <... mkdir resumed>) = 0 [pid 5087] rmdir("./15/bus" [pid 5086] rmdir("./20" [pid 5199] setpgid(0, 0 [pid 5198] <... symlink resumed>) = 0 [pid 5087] <... rmdir resumed>) = 0 [pid 5086] <... rmdir resumed>) = 0 [pid 5199] <... setpgid resumed>) = 0 [pid 5196] mount("/dev/loop4", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5086] mkdir("./21", 0777 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5196] <... mount resumed>) = 0 [pid 5087] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... mkdir resumed>) = 0 [pid 5199] <... openat resumed>) = 3 [pid 5198] <... openat resumed>) = 3 [pid 5196] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5199] write(3, "1000", 4 [pid 5198] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5196] <... openat resumed>) = 4 [pid 5087] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5199] <... write resumed>) = 4 [pid 5199] close(3 [pid 5198] <... ioctl resumed>) = 0 [pid 5197] <... mount resumed>) = 0 [pid 5196] chdir("./bus" [pid 5087] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5198] memfd_create("syzkaller", 0 [pid 5197] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5196] <... chdir resumed>) = 0 [pid 5087] unlink("./15/binderfs" [pid 5199] <... close resumed>) = 0 [pid 5196] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5199] symlink("/dev/binderfs", "./binderfs" [pid 5198] <... memfd_create resumed>) = 4 [pid 5197] <... openat resumed>) = 4 [pid 5087] <... unlink resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5196] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5199] <... symlink resumed>) = 0 [pid 5199] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5197] chdir("./bus" [pid 5196] exit_group(0 [pid 5087] getdents64(3, [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5199] <... openat resumed>) = 3 [pid 5196] <... exit_group resumed>) = ? [pid 5087] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5197] <... chdir resumed>) = 0 [pid 5086] <... ioctl resumed>) = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5086] close(3 [pid 5197] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5086] <... close resumed>) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5196] +++ exited with 0 +++ [pid 5087] close(3 [pid 5199] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5198] <... mmap resumed>) = 0x7fc3fd400000 [pid 5199] <... ioctl resumed>) = 0 [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5196, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5087] <... close resumed>) = 0 [pid 5090] restart_syscall(<... resuming interrupted clone ...> [ 118.311089][ T5102] R10: 0001784004002b48 R11: dffffc0000000000 R12: 0000000000000000 [pid 5197] exit_group(0 [pid 5090] <... restart_syscall resumed>) = 0 [pid 5199] memfd_create("syzkaller", 0 [pid 5198] 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 5087] rmdir("./15" [pid 5199] <... memfd_create resumed>) = 4 [pid 5197] <... exit_group resumed>) = ? [pid 5087] <... rmdir resumed>) = 0 [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc3fd400000 [pid 5087] mkdir("./16", 0777 [pid 5086] <... clone resumed>, child_tidptr=0x555560e9f650) = 5200 [pid 5090] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5197] +++ exited with 0 +++ [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5200 attached [pid 5200] set_robust_list(0x555560e9f660, 24 [pid 5091] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5197, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5200] <... set_robust_list resumed>) = 0 [pid 5091] restart_syscall(<... resuming interrupted clone ...> [pid 5200] chdir("./21" [pid 5091] <... restart_syscall resumed>) = 0 [pid 5090] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5090] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] getdents64(3, [pid 5200] <... chdir resumed>) = 0 [pid 5091] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5200] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5200] <... prctl resumed>) = 0 [pid 5091] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5200] setpgid(0, 0 [pid 5091] <... openat resumed>) = 3 [pid 5200] <... setpgid resumed>) = 0 [pid 5091] newfstatat(3, "", [pid 5200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] getdents64(3, 0x555560ea06f0 /* 4 entries */, 32768) = 104 [pid 5091] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5200] <... openat resumed>) = 3 [pid 5199] 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 5200] write(3, "1000", 4) = 4 [pid 5200] close(3) = 0 [pid 5200] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5198] <... write resumed>) = 524288 [pid 5091] <... umount2 resumed>) = 0 [pid 5090] <... umount2 resumed>) = 0 [pid 5087] <... mkdir resumed>) = 0 [pid 5200] openat(AT_FDCWD, "/dev/loop0", O_RDONLY [pid 5090] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5200] <... openat resumed>) = 3 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5200] ioctl(3, LOOP_SET_BLOCK_SIZE, 2048 [pid 5199] <... write resumed>) = 524288 [pid 5198] munmap(0x7fc3fd400000, 138412032 [pid 5091] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] newfstatat(AT_FDCWD, "./15/bus", [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [ 118.376124][ T5102] R13: 0000000000000000 R14: ffffc90004b67ca8 R15: ffff88802ebe4c00 [ 118.384627][ T5102] FS: 00007faaeae42c80(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [pid 5200] <... ioctl resumed>) = 0 [pid 5199] munmap(0x7fc3fd400000, 138412032 [pid 5198] <... munmap resumed>) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5200] memfd_create("syzkaller", 0 [pid 5090] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5200] <... memfd_create resumed>) = 4 [pid 5090] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5200] <... mmap resumed>) = 0x7fc3fd400000 [pid 5090] newfstatat(4, "", [pid 5091] newfstatat(AT_FDCWD, "./14/bus", [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... ioctl resumed>) = 0 [pid 5090] getdents64(4, [pid 5087] close(3 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] getdents64(4, 0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] close(4 [pid 5199] <... munmap resumed>) = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] <... close resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] rmdir("./15/bus" [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5198] <... openat resumed>) = 5 [pid 5090] <... rmdir resumed>) = 0 [pid 5090] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5090] newfstatat(AT_FDCWD, "./15/binderfs", ./strace-static-x86_64: Process 5201 attached [pid 5200] 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 5199] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5198] ioctl(5, LOOP_SET_FD, 4 [pid 5091] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5200] <... write resumed>) = 524288 [pid 5091] <... openat resumed>) = 4 [pid 5090] unlink("./15/binderfs" [pid 5087] <... clone resumed>, child_tidptr=0x555560e9f650) = 5201 [pid 5090] <... unlink resumed>) = 0 [pid 5090] getdents64(3, [pid 5091] newfstatat(4, "", [pid 5090] <... getdents64 resumed>0x555560ea06f0 /* 0 entries */, 32768) = 0 [pid 5090] close(3 [pid 5199] <... openat resumed>) = 5 [pid 5090] <... close resumed>) = 0 [pid 5199] ioctl(5, LOOP_SET_FD, 4 [pid 5091] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5201] set_robust_list(0x555560e9f660, 24) = 0 [pid 5199] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5198] <... ioctl resumed>) = 0 [pid 5091] getdents64(4, [pid 5090] rmdir("./15" [pid 5201] chdir("./16" [pid 5199] ioctl(5, LOOP_CLR_FD [pid 5198] close(4 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 2 entries */, 32768) = 48 [pid 5090] <... rmdir resumed>) = 0 [pid 5201] <... chdir resumed>) = 0 [pid 5199] <... ioctl resumed>) = 0 [pid 5198] <... close resumed>) = 0 [pid 5091] getdents64(4, [pid 5090] mkdir("./16", 0777 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5198] close(5 [pid 5091] <... getdents64 resumed>0x555560ea8730 /* 0 entries */, 32768) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5090] ioctl(3, LOOP_CLR_FD) = 0 [pid 5201] <... prctl resumed>) = 0 [pid 5200] munmap(0x7fc3fd400000, 138412032 [pid 5198] <... close resumed>) = 0 [pid 5091] close(4 [pid 5090] close(3 [pid 5201] setpgid(0, 0 [pid 5200] <... munmap resumed>) = 0 [pid 5198] mkdir("./bus", 0777 [pid 5091] <... close resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5091] rmdir("./14/bus" [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5201] <... setpgid resumed>) = 0 [pid 5199] ioctl(5, LOOP_SET_FD, 4 [pid 5198] <... mkdir resumed>) = 0 [pid 5091] <... rmdir resumed>) = 0 [pid 5091] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5200] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5199] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5198] mount("/dev/loop3", "./bus", "hfsplus", MS_NOEXEC|MS_RELATIME, "" [pid 5091] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5200] <... openat resumed>) = 5 [pid 5200] ioctl(5, LOOP_SET_FD, 4 [pid 5091] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5090] <... clone resumed>, child_tidptr=0x555560e9f650) = 5202 [pid 5201] <... openat resumed>) = 3 [pid 5200] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5199] close(5 [pid 5091] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5199] <... close resumed>) = 0 [pid 5091] unlink("./14/binderfs" [ 118.450674][ T5102] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 118.476249][ T5198] loop3: detected capacity change from 0 to 1024 [ 118.488918][ T5102] CR2: 00007fc3fd47fc00 CR3: 000000007a2a4000 CR4: 0000000000350ef0 [pid 5200] ioctl(5, LOOP_CLR_FD./strace-static-x86_64: Process 5202 attached [pid 5201] write(3, "1000", 4 [pid 5200] <... ioctl resumed>) = 0 [pid 5199] close(4 [pid 5091] <... unlink resumed>) = 0 [pid 5202] set_robust_list(0x555560e9f660, 24 [pid 5201] <... write resumed>) = 4 [pid 5202] <... set_robust_list resumed>) = 0 [pid 5202] chdir("./16" [pid 5200] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 5200] close(5) = 0 [ 118.545055][ T5102] Kernel panic - not syncing: Fatal exception [ 118.551261][ T5102] Kernel Offset: disabled [ 118.555592][ T5102] Rebooting in 86400 seconds..