./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor824651141 <...> Warning: Permanently added '10.128.1.57' (ECDSA) to the list of known hosts. execve("./syz-executor824651141", ["./syz-executor824651141"], 0x7ffd73d1bf70 /* 10 vars */) = 0 brk(NULL) = 0x5555566c8000 brk(0x5555566c8c40) = 0x5555566c8c40 arch_prctl(ARCH_SET_FS, 0x5555566c8300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor824651141", 4096) = 27 brk(0x5555566e9c40) = 0x5555566e9c40 brk(0x5555566ea000) = 0x5555566ea000 mprotect(0x7fd74df92000, 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 getpid() = 5061 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "5061", 4) = 4 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5062 attached , child_tidptr=0x5555566c85d0) = 5062 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555566c85d0) = 5063 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] getpid(./strace-static-x86_64: Process 5063 attached ) = 5062 [pid 5063] getpid( [pid 5062] mkdir("./syzkaller.RrpfTV", 0700./strace-static-x86_64: Process 5064 attached [pid 5063] <... getpid resumed>) = 5063 [pid 5061] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5064 [pid 5064] getpid( [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5064] <... getpid resumed>) = 5064 [pid 5063] mkdir("./syzkaller.EmIdT2", 0700 [pid 5062] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5065 attached [pid 5061] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5065 [pid 5064] mkdir("./syzkaller.PbQop9", 0700 [pid 5063] <... mkdir resumed>) = 0 [pid 5062] chmod("./syzkaller.RrpfTV", 0777 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5065] getpid( [pid 5064] <... mkdir resumed>) = 0 [pid 5065] <... getpid resumed>) = 5065 [pid 5064] chmod("./syzkaller.PbQop9", 0777 [pid 5063] chmod("./syzkaller.EmIdT2", 0777 [pid 5062] <... chmod resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5066 [pid 5065] mkdir("./syzkaller.7kjrgb", 0700 [pid 5064] <... chmod resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5065] <... mkdir resumed>) = 0 [pid 5064] chdir("./syzkaller.PbQop9"./strace-static-x86_64: Process 5066 attached [pid 5065] chmod("./syzkaller.7kjrgb", 0777 [pid 5064] <... chdir resumed>) = 0 [pid 5063] <... chmod resumed>) = 0 [pid 5062] chdir("./syzkaller.RrpfTV" [pid 5061] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5067 [pid 5065] <... chmod resumed>) = 0 [pid 5064] mkdir("./0", 0777 [pid 5065] chdir("./syzkaller.7kjrgb" [pid 5064] <... mkdir resumed>) = 0 [pid 5063] chdir("./syzkaller.EmIdT2" [pid 5062] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 5067 attached [pid 5066] getpid( [pid 5065] <... chdir resumed>) = 0 [pid 5064] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5065] mkdir("./0", 0777 [pid 5064] <... openat resumed>) = 3 [pid 5063] <... chdir resumed>) = 0 [pid 5067] getpid( [pid 5066] <... getpid resumed>) = 5066 [pid 5065] <... mkdir resumed>) = 0 [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5062] mkdir("./0", 0777 [pid 5065] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5064] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5063] mkdir("./0", 0777 [pid 5065] <... openat resumed>) = 3 [pid 5064] close(3 [pid 5067] <... getpid resumed>) = 5067 [pid 5066] mkdir("./syzkaller.shAlWh", 0700 [pid 5065] ioctl(3, LOOP_CLR_FD [pid 5064] <... close resumed>) = 0 [pid 5063] <... mkdir resumed>) = 0 [pid 5062] <... mkdir resumed>) = 0 [pid 5065] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5063] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5066] <... mkdir resumed>) = 0 [pid 5065] close(3 [pid 5062] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5066] chmod("./syzkaller.shAlWh", 0777 [pid 5065] <... close resumed>) = 0 [pid 5064] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5068 [pid 5063] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5068 attached [pid 5067] mkdir("./syzkaller.HoydQm", 0700 [pid 5066] <... chmod resumed>) = 0 [pid 5065] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5063] ioctl(3, LOOP_CLR_FD [pid 5062] <... openat resumed>) = 3 [pid 5068] chdir("./0" [pid 5067] <... mkdir resumed>) = 0 [pid 5066] chdir("./syzkaller.shAlWh" [pid 5063] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5062] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5070 attached [pid 5068] <... chdir resumed>) = 0 [pid 5067] chmod("./syzkaller.HoydQm", 0777 [pid 5066] <... chdir resumed>) = 0 [pid 5065] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5070 [pid 5063] close(3 [pid 5062] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5070] chdir("./0" [pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5067] <... chmod resumed>) = 0 [pid 5066] mkdir("./0", 0777 [pid 5063] <... close resumed>) = 0 [pid 5062] close(3 [pid 5070] <... chdir resumed>) = 0 [pid 5068] <... prctl resumed>) = 0 [pid 5067] chdir("./syzkaller.HoydQm" [pid 5066] <... mkdir resumed>) = 0 [pid 5063] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] <... close resumed>) = 0 [pid 5070] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] setpgid(0, 0 [pid 5067] <... chdir resumed>) = 0 [pid 5066] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... prctl resumed>) = 0 [pid 5068] <... setpgid resumed>) = 0 [pid 5067] mkdir("./0", 0777 [pid 5066] <... openat resumed>) = 3 [pid 5063] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5071 [pid 5070] setpgid(0, 0 [pid 5068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] <... mkdir resumed>) = 0 [pid 5066] ioctl(3, LOOP_CLR_FD [pid 5062] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5072 ./strace-static-x86_64: Process 5071 attached [pid 5070] <... setpgid resumed>) = 0 [pid 5068] <... openat resumed>) = 3 [pid 5067] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5066] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5071] chdir("./0" [pid 5070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5068] write(3, "1000", 4 [pid 5067] <... openat resumed>) = 3 [pid 5066] close(3 [pid 5071] <... chdir resumed>) = 0 [pid 5070] <... openat resumed>) = 3 [pid 5068] <... write resumed>) = 4 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5066] <... close resumed>) = 0 ./strace-static-x86_64: Process 5072 attached [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] write(3, "1000", 4 [pid 5068] close(3 [pid 5067] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5066] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5072] chdir("./0" [pid 5071] <... prctl resumed>) = 0 [pid 5070] <... write resumed>) = 4 [pid 5068] <... close resumed>) = 0 [pid 5067] close(3 [pid 5072] <... chdir resumed>) = 0 [pid 5071] setpgid(0, 0 [pid 5070] close(3 [pid 5068] symlink("/dev/binderfs", "./binderfs" [pid 5067] <... close resumed>) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5074 [pid 5072] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5071] <... setpgid resumed>) = 0 [pid 5070] <... close resumed>) = 0 [pid 5068] <... symlink resumed>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5074 attached [pid 5072] <... prctl resumed>) = 0 [pid 5071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] symlink("/dev/binderfs", "./binderfs" [pid 5068] memfd_create("syzkaller", 0 [pid 5072] setpgid(0, 0 [pid 5071] <... openat resumed>) = 3 [pid 5070] <... symlink resumed>) = 0 [pid 5068] <... memfd_create resumed>) = 3 [pid 5067] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5075 [pid 5074] chdir("./0" [pid 5072] <... setpgid resumed>) = 0 [pid 5071] write(3, "1000", 4 [pid 5070] memfd_create("syzkaller", 0 [pid 5068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5075 attached [pid 5074] <... chdir resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5071] <... write resumed>) = 4 [pid 5070] <... memfd_create resumed>) = 3 [pid 5068] <... mmap resumed>) = 0x7fd745acd000 [pid 5075] chdir("./0" [pid 5074] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5072] <... openat resumed>) = 3 [pid 5071] close(3 [pid 5070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5075] <... chdir resumed>) = 0 [pid 5074] <... prctl resumed>) = 0 [pid 5072] write(3, "1000", 4 [pid 5071] <... close resumed>) = 0 [pid 5070] <... mmap resumed>) = 0x7fd745acd000 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5074] setpgid(0, 0 [pid 5072] <... write resumed>) = 4 [pid 5071] symlink("/dev/binderfs", "./binderfs" [pid 5075] <... prctl resumed>) = 0 [pid 5072] close(3 [pid 5075] setpgid(0, 0 [pid 5074] <... setpgid resumed>) = 0 [pid 5072] <... close resumed>) = 0 [pid 5071] <... symlink resumed>) = 0 [pid 5075] <... setpgid resumed>) = 0 [pid 5072] symlink("/dev/binderfs", "./binderfs" [pid 5071] memfd_create("syzkaller", 0 [pid 5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] <... openat resumed>) = 3 [pid 5072] <... symlink resumed>) = 0 [pid 5071] <... memfd_create resumed>) = 3 [pid 5075] <... openat resumed>) = 3 [pid 5074] write(3, "1000", 4 [pid 5072] memfd_create("syzkaller", 0 [pid 5071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5075] write(3, "1000", 4 [pid 5074] <... write resumed>) = 4 [pid 5072] <... memfd_create resumed>) = 3 [pid 5071] <... mmap resumed>) = 0x7fd745acd000 [pid 5075] <... write resumed>) = 4 [pid 5074] close(3 [pid 5072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5075] close(3 [pid 5072] <... mmap resumed>) = 0x7fd745acd000 [pid 5075] <... close resumed>) = 0 [pid 5074] <... close resumed>) = 0 [pid 5075] symlink("/dev/binderfs", "./binderfs" [pid 5074] symlink("/dev/binderfs", "./binderfs" [pid 5075] <... symlink resumed>) = 0 [pid 5074] <... symlink resumed>) = 0 [pid 5075] memfd_create("syzkaller", 0 [pid 5074] memfd_create("syzkaller", 0 [pid 5075] <... memfd_create resumed>) = 3 [pid 5074] <... memfd_create resumed>) = 3 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5075] <... mmap resumed>) = 0x7fd745acd000 [pid 5074] <... mmap resumed>) = 0x7fd745acd000 [pid 5070] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5068] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5072] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5071] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5075] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5074] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5070] <... write resumed>) = 16777216 [pid 5070] munmap(0x7fd745acd000, 16777216 [pid 5072] <... write resumed>) = 16777216 [pid 5068] <... write resumed>) = 16777216 [pid 5068] munmap(0x7fd745acd000, 16777216 [pid 5072] munmap(0x7fd745acd000, 16777216 [pid 5070] <... munmap resumed>) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5070] ioctl(4, LOOP_SET_FD, 3 [pid 5072] <... munmap resumed>) = 0 [pid 5071] <... write resumed>) = 16777216 [pid 5071] munmap(0x7fd745acd000, 16777216) = 0 [pid 5068] <... munmap resumed>) = 0 [pid 5068] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5068] ioctl(4, LOOP_SET_FD, 3 [pid 5072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5072] ioctl(4, LOOP_SET_FD, 3 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3 [pid 5068] <... ioctl resumed>) = 0 [pid 5070] <... close resumed>) = 0 [pid 5068] close(3 [pid 5075] <... write resumed>) = 16777216 [pid 5070] mkdir("./file0", 0777 [pid 5068] <... close resumed>) = 0 [pid 5075] munmap(0x7fd745acd000, 16777216 [pid 5070] <... mkdir resumed>) = 0 [pid 5068] mkdir("./file0", 0777 [pid 5070] mount("/dev/loop3", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5068] <... mkdir resumed>) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5068] mount("/dev/loop2", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5071] <... openat resumed>) = 4 [pid 5071] ioctl(4, LOOP_SET_FD, 3 [pid 5075] <... munmap resumed>) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5075] ioctl(4, LOOP_SET_FD, 3 [pid 5072] <... ioctl resumed>) = 0 [pid 5072] close(3) = 0 [pid 5072] mkdir("./file0", 0777) = 0 [pid 5072] mount("/dev/loop0", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5071] <... ioctl resumed>) = 0 [pid 5075] <... ioctl resumed>) = 0 [pid 5075] close(3 [pid 5071] close(3 [pid 5075] <... close resumed>) = 0 [pid 5071] <... close resumed>) = 0 [ 53.144882][ T5070] loop3: detected capacity change from 0 to 32768 [ 53.162972][ T5068] loop2: detected capacity change from 0 to 32768 [ 53.167211][ T5072] loop0: detected capacity change from 0 to 32768 [pid 5075] mkdir("./file0", 0777 [pid 5074] <... write resumed>) = 16777216 [pid 5071] mkdir("./file0", 0777 [pid 5075] <... mkdir resumed>) = 0 [pid 5075] mount("/dev/loop5", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5074] munmap(0x7fd745acd000, 16777216 [pid 5071] <... mkdir resumed>) = 0 [pid 5071] mount("/dev/loop1", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5074] <... munmap resumed>) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 53.191809][ T5071] loop1: detected capacity change from 0 to 32768 [ 53.202162][ T5075] loop5: detected capacity change from 0 to 32768 [ 53.220269][ T5070] XFS (loop3): DAX unsupported by block device. Turning off DAX. [ 53.222315][ T5068] XFS (loop2): DAX unsupported by block device. Turning off DAX. [pid 5074] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5074] close(3) = 0 [pid 5074] mkdir("./file0", 0777) = 0 [ 53.236790][ T5070] XFS (loop3): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 53.237523][ T5068] XFS (loop2): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 53.256415][ T5072] XFS (loop0): DAX unsupported by block device. Turning off DAX. [ 53.261446][ T5074] loop4: detected capacity change from 0 to 32768 [ 53.268678][ T5072] XFS (loop0): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 53.271457][ T5075] XFS (loop5): DAX unsupported by block device. Turning off DAX. [ 53.288462][ T5075] XFS (loop5): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 53.301284][ T5071] XFS (loop1): DAX unsupported by block device. Turning off DAX. [ 53.316677][ T5071] XFS (loop1): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 53.324040][ T5070] XFS (loop3): Ending clean mount [ 53.336069][ T5068] XFS (loop2): Ending clean mount [pid 5074] mount("/dev/loop4", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5072] <... mount resumed>) = 0 [pid 5072] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5072] chdir("./file0") = 0 [ 53.338228][ T5070] XFS (loop3): Quotacheck needed: Please wait. [ 53.343403][ T5072] XFS (loop0): Ending clean mount [ 53.357132][ T5068] XFS (loop2): Quotacheck needed: Please wait. [ 53.365977][ T5072] XFS (loop0): Quotacheck needed: Please wait. [ 53.386572][ T5068] XFS (loop2): Quotacheck: Done. [pid 5072] ioctl(4, LOOP_CLR_FD) = 0 [pid 5072] close(4) = 0 [pid 5072] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4 [pid 5072] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5 [pid 5070] <... mount resumed>) = 0 [pid 5068] <... mount resumed>) = 0 [pid 5072] sendfile(5, 4, [96] [ 53.389070][ T5072] XFS (loop0): Quotacheck: Done. [ 53.406030][ T5075] XFS (loop5): Ending clean mount [ 53.407896][ T5074] XFS (loop4): DAX unsupported by block device. Turning off DAX. [ 53.412903][ T5075] XFS (loop5): Quotacheck needed: Please wait. [ 53.426690][ T5074] XFS (loop4): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 53.427341][ T5070] XFS (loop3): Quotacheck: Done. [pid 5070] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5068] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5075] <... mount resumed>) = 0 [pid 5071] <... mount resumed>) = 0 [pid 5070] <... openat resumed>) = 3 [pid 5068] <... openat resumed>) = 3 [pid 5075] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5071] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5070] chdir("./file0" [pid 5068] chdir("./file0" [pid 5075] <... openat resumed>) = 3 [pid 5071] <... openat resumed>) = 3 [pid 5070] <... chdir resumed>) = 0 [pid 5068] <... chdir resumed>) = 0 [pid 5075] chdir("./file0" [pid 5071] chdir("./file0" [pid 5070] ioctl(4, LOOP_CLR_FD [pid 5068] ioctl(4, LOOP_CLR_FD [pid 5075] <... chdir resumed>) = 0 [pid 5071] <... chdir resumed>) = 0 [pid 5070] <... ioctl resumed>) = 0 [pid 5068] <... ioctl resumed>) = 0 [pid 5075] ioctl(4, LOOP_CLR_FD [pid 5071] ioctl(4, LOOP_CLR_FD [pid 5070] close(4 [pid 5068] close(4 [pid 5075] <... ioctl resumed>) = 0 [pid 5071] <... ioctl resumed>) = 0 [pid 5070] <... close resumed>) = 0 [pid 5068] <... close resumed>) = 0 [pid 5075] close(4 [pid 5071] close(4 [pid 5070] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5068] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5075] <... close resumed>) = 0 [pid 5071] <... close resumed>) = 0 [pid 5070] <... openat resumed>) = 4 [pid 5068] <... openat resumed>) = 4 [pid 5075] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5071] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5070] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5068] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5075] <... openat resumed>) = 4 [pid 5071] <... openat resumed>) = 4 [pid 5070] <... openat resumed>) = 5 [pid 5068] <... openat resumed>) = 5 [ 53.441995][ T5071] XFS (loop1): Ending clean mount [ 53.451281][ T5071] XFS (loop1): Quotacheck needed: Please wait. [ 53.478684][ T5075] XFS (loop5): Quotacheck: Done. [ 53.485977][ T5071] XFS (loop1): Quotacheck: Done. [pid 5075] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5071] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5070] sendfile(5, 4, [96] [pid 5068] sendfile(5, 4, [96] [pid 5075] <... openat resumed>) = 5 [pid 5071] <... openat resumed>) = 5 [pid 5075] sendfile(5, 4, [96] [ 53.584630][ T5074] XFS (loop4): Ending clean mount [ 53.693228][ T5068] syz-executor824 (5068): drop_caches: 2 [pid 5071] sendfile(5, 4, [96] [pid 5072] <... sendfile resumed> => [826], 2160) = 730 [pid 5072] exit_group(0) = ? [pid 5072] +++ exited with 0 +++ [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5072, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=44 /* 0.44 s */} --- [pid 5062] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5062] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5062] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5062] getdents64(3, 0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5062] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5062] lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5062] unlink("./0/binderfs" [pid 5068] <... sendfile resumed> => [826], 2160) = 730 [pid 5062] <... unlink resumed>) = 0 [pid 5068] exit_group(0 [pid 5062] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [ 53.737601][ T5072] syz-executor824 (5072): drop_caches: 2 [ 53.737803][ T5068] syz-executor824 (5068): drop_caches: 2 [ 53.752316][ T5072] syz-executor824 (5072): drop_caches: 2 [pid 5068] <... exit_group resumed>) = ? [pid 5068] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5068, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=26 /* 0.26 s */} --- [pid 5064] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5064] getdents64(3, 0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5064] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5064] unlink("./0/binderfs") = 0 [pid 5064] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5075] <... sendfile resumed> => [826], 2160) = 730 [pid 5075] exit_group(0) = ? [pid 5075] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=42 /* 0.42 s */} --- [pid 5067] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5067] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5067] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5067] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5067] getdents64(3, 0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5067] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5067] lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5067] unlink("./0/binderfs") = 0 [ 53.930036][ T5075] syz-executor824 (5075): drop_caches: 2 [ 53.937386][ T5075] syz-executor824 (5075): drop_caches: 2 [pid 5067] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5071] <... sendfile resumed> => [826], 2160) = 730 [pid 5071] exit_group(0) = ? [pid 5071] +++ exited with 0 +++ [pid 5063] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5071, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=44 /* 0.44 s */} --- [pid 5063] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5074] <... mount resumed>) = 0 [pid 5074] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5074] chdir("./file0") = 0 [pid 5074] ioctl(4, LOOP_CLR_FD) = 0 [pid 5074] close(4 [pid 5063] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5063] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5063] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5063] getdents64(3, 0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5063] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5063] lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5063] unlink("./0/binderfs") = 0 [pid 5063] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5074] <... close resumed>) = 0 [pid 5074] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4 [pid 5074] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5 [ 54.039659][ T5071] syz-executor824 (5071): drop_caches: 2 [ 54.050364][ T5071] syz-executor824 (5071): drop_caches: 2 [ 54.063892][ T5074] XFS (loop4): Quotacheck needed: Please wait. [ 54.064874][ T5062] XFS (loop0): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 54.079451][ T5064] XFS (loop2): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 54.080509][ T5074] XFS (loop4): Quotacheck: Done. [ 54.089817][ T5067] XFS (loop5): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 54.118550][ T5063] XFS (loop1): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 54.119290][ T5074] syz-executor824 (5074): drop_caches: 2 [pid 5074] sendfile(5, 4, [96] [pid 5070] <... sendfile resumed> => [826], 2160) = 730 [pid 5070] exit_group(0) = ? [pid 5070] +++ exited with 0 +++ [pid 5074] <... sendfile resumed> => [826], 2160) = 730 [pid 5074] exit_group(0 [pid 5065] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5070, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=47 /* 0.47 s */} --- [pid 5065] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5065] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5065] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5065] getdents64(3, 0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5065] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5065] lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5065] unlink("./0/binderfs") = 0 [pid 5065] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5074] <... exit_group resumed>) = ? [pid 5074] +++ exited with 0 +++ [ 54.147057][ T5070] syz-executor824 (5070): drop_caches: 2 [ 54.167214][ T5070] syz-executor824 (5070): drop_caches: 2 [pid 5066] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5074, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=28 /* 0.28 s */} --- [pid 5066] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5066] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5066] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5066] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5066] getdents64(3, 0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5066] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5066] lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5066] unlink("./0/binderfs") = 0 [ 54.205017][ T5074] syz-executor824 (5074): drop_caches: 2 [ 54.238503][ T5065] XFS (loop3): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 54.247935][ T5066] XFS (loop4): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [pid 5066] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5067] <... umount2 resumed>) = 0 [pid 5067] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5067] lstat("./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5067] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5067] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5067] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5067] getdents64(4, 0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5067] getdents64(4, 0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5067] close(4) = 0 [pid 5067] rmdir("./0/file0") = 0 [pid 5067] getdents64(3, 0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5067] close(3) = 0 [pid 5067] rmdir("./0") = 0 [pid 5067] mkdir("./1", 0777) = 0 [pid 5067] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5067] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5067] close(3) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555566c85d0) = 5127 ./strace-static-x86_64: Process 5127 attached [pid 5127] chdir("./1") = 0 [pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5127] setpgid(0, 0) = 0 [pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5127] write(3, "1000", 4) = 4 [pid 5127] close(3) = 0 [pid 5127] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5127] memfd_create("syzkaller", 0) = 3 [pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd745acd000 [pid 5064] <... umount2 resumed>) = 0 [pid 5064] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] lstat("./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5064] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5064] getdents64(4, 0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./0/file0") = 0 [pid 5064] getdents64(3, 0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./0") = 0 [pid 5064] mkdir("./1", 0777) = 0 [pid 5064] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5064] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5064] close(3) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555566c85d0) = 5128 ./strace-static-x86_64: Process 5128 attached [pid 5063] <... umount2 resumed>) = 0 [pid 5063] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5128] chdir("./1" [pid 5063] lstat("./0/file0", [pid 5128] <... chdir resumed>) = 0 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5063] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5128] <... prctl resumed>) = 0 [pid 5065] <... umount2 resumed>) = 0 [pid 5128] setpgid(0, 0 [pid 5063] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5128] <... setpgid resumed>) = 0 [pid 5065] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5063] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5065] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5063] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5128] <... openat resumed>) = 3 [pid 5065] lstat("./0/file0", [pid 5063] <... openat resumed>) = 4 [pid 5128] write(3, "1000", 4 [pid 5065] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5063] fstat(4, [pid 5128] <... write resumed>) = 4 [pid 5065] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5128] close(3 [pid 5063] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5128] <... close resumed>) = 0 [pid 5065] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5128] symlink("/dev/binderfs", "./binderfs" [pid 5065] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5063] getdents64(4, [pid 5128] <... symlink resumed>) = 0 [pid 5065] <... openat resumed>) = 4 [pid 5063] <... getdents64 resumed>0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5128] memfd_create("syzkaller", 0) = 3 [pid 5065] fstat(4, [pid 5063] getdents64(4, [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5065] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5063] <... getdents64 resumed>0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5128] <... mmap resumed>) = 0x7fd745acd000 [pid 5065] getdents64(4, [pid 5063] close(4 [pid 5065] <... getdents64 resumed>0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5063] <... close resumed>) = 0 [pid 5065] getdents64(4, [pid 5063] rmdir("./0/file0" [pid 5065] <... getdents64 resumed>0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5063] <... rmdir resumed>) = 0 [pid 5065] close(4 [pid 5063] getdents64(3, [pid 5065] <... close resumed>) = 0 [pid 5063] <... getdents64 resumed>0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5065] rmdir("./0/file0" [pid 5063] close(3 [pid 5065] <... rmdir resumed>) = 0 [pid 5063] <... close resumed>) = 0 [pid 5065] getdents64(3, [pid 5063] rmdir("./0" [pid 5065] <... getdents64 resumed>0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5065] close(3 [pid 5063] <... rmdir resumed>) = 0 [pid 5065] <... close resumed>) = 0 [pid 5063] mkdir("./1", 0777 [pid 5065] rmdir("./0" [pid 5062] <... umount2 resumed>) = 0 [pid 5063] <... mkdir resumed>) = 0 [pid 5065] <... rmdir resumed>) = 0 [pid 5063] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5065] mkdir("./1", 0777 [pid 5063] <... openat resumed>) = 3 [pid 5062] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5065] <... mkdir resumed>) = 0 [pid 5063] ioctl(3, LOOP_CLR_FD [pid 5065] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5063] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5065] <... openat resumed>) = 3 [pid 5065] ioctl(3, LOOP_CLR_FD [pid 5063] close(3 [pid 5065] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5063] <... close resumed>) = 0 [pid 5065] close(3 [pid 5063] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5065] <... close resumed>) = 0 [pid 5062] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5065] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] lstat("./0/file0", [pid 5063] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5129 [pid 5065] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5130 [pid 5062] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5062] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5062] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5130 attached ) = 4 ./strace-static-x86_64: Process 5129 attached [pid 5130] chdir("./1" [pid 5062] fstat(4, [pid 5130] <... chdir resumed>) = 0 [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5129] chdir("./1" [pid 5062] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5130] setpgid(0, 0 [pid 5129] <... chdir resumed>) = 0 [pid 5062] getdents64(4, [pid 5130] <... setpgid resumed>) = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5062] <... getdents64 resumed>0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5129] <... prctl resumed>) = 0 [pid 5062] getdents64(4, 0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5130] <... openat resumed>) = 3 [pid 5129] setpgid(0, 0 [pid 5062] close(4 [pid 5130] write(3, "1000", 4 [pid 5129] <... setpgid resumed>) = 0 [pid 5062] <... close resumed>) = 0 [pid 5130] <... write resumed>) = 4 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] rmdir("./0/file0" [pid 5130] close(3 [pid 5129] <... openat resumed>) = 3 [pid 5062] <... rmdir resumed>) = 0 [pid 5130] <... close resumed>) = 0 [pid 5129] write(3, "1000", 4 [pid 5062] getdents64(3, [pid 5130] symlink("/dev/binderfs", "./binderfs" [pid 5129] <... write resumed>) = 4 [pid 5062] <... getdents64 resumed>0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5130] <... symlink resumed>) = 0 [pid 5129] close(3 [pid 5062] close(3 [pid 5130] memfd_create("syzkaller", 0 [pid 5129] <... close resumed>) = 0 [pid 5062] <... close resumed>) = 0 [pid 5130] <... memfd_create resumed>) = 3 [pid 5129] symlink("/dev/binderfs", "./binderfs" [pid 5062] rmdir("./0" [pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5129] <... symlink resumed>) = 0 [pid 5062] <... rmdir resumed>) = 0 [pid 5130] <... mmap resumed>) = 0x7fd745acd000 [pid 5062] mkdir("./1", 0777 [pid 5129] memfd_create("syzkaller", 0 [pid 5062] <... mkdir resumed>) = 0 [pid 5062] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5129] <... memfd_create resumed>) = 3 [pid 5062] <... openat resumed>) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5129] <... mmap resumed>) = 0x7fd745acd000 [pid 5062] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5062] close(3) = 0 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555566c85d0) = 5131 ./strace-static-x86_64: Process 5131 attached [pid 5131] chdir("./1") = 0 [pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5131] setpgid(0, 0) = 0 [pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5131] write(3, "1000", 4) = 4 [pid 5131] close(3) = 0 [pid 5131] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5131] memfd_create("syzkaller", 0) = 3 [pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd745acd000 [pid 5066] <... umount2 resumed>) = 0 [pid 5066] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5066] lstat("./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5066] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5066] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5066] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5066] getdents64(4, 0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5066] getdents64(4, 0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5066] close(4) = 0 [pid 5066] rmdir("./0/file0") = 0 [pid 5066] getdents64(3, 0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5066] close(3) = 0 [pid 5066] rmdir("./0") = 0 [pid 5066] mkdir("./1", 0777) = 0 [pid 5066] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5066] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5066] close(3) = 0 [pid 5066] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555566c85d0) = 5132 ./strace-static-x86_64: Process 5132 attached [pid 5132] chdir("./1") = 0 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5132] setpgid(0, 0) = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5132] write(3, "1000", 4) = 4 [pid 5132] close(3) = 0 [pid 5132] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5132] memfd_create("syzkaller", 0) = 3 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd745acd000 [pid 5127] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5128] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5130] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5129] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5131] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5132] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5127] <... write resumed>) = 16777216 [pid 5127] munmap(0x7fd745acd000, 16777216) = 0 [pid 5127] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5127] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5127] close(3) = 0 [pid 5127] mkdir("./file0", 0777) = 0 [pid 5127] mount("/dev/loop5", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5128] <... write resumed>) = 16777216 [ 55.310800][ T5127] loop5: detected capacity change from 0 to 32768 [pid 5128] munmap(0x7fd745acd000, 16777216) = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5128] ioctl(4, LOOP_SET_FD, 3 [pid 5130] <... write resumed>) = 16777216 [pid 5130] munmap(0x7fd745acd000, 16777216 [pid 5128] <... ioctl resumed>) = 0 [pid 5130] <... munmap resumed>) = 0 [pid 5128] close(3) = 0 [pid 5128] mkdir("./file0", 0777) = 0 [pid 5128] mount("/dev/loop2", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5130] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5130] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5130] close(3) = 0 [pid 5130] mkdir("./file0", 0777 [pid 5131] <... write resumed>) = 16777216 [pid 5130] <... mkdir resumed>) = 0 [pid 5129] <... write resumed>) = 16777216 [pid 5131] munmap(0x7fd745acd000, 16777216 [ 55.394131][ T5127] XFS (loop5): DAX unsupported by block device. Turning off DAX. [ 55.418038][ T5128] loop2: detected capacity change from 0 to 32768 [ 55.420884][ T5127] XFS (loop5): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [pid 5130] mount("/dev/loop3", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5129] munmap(0x7fd745acd000, 16777216 [pid 5132] <... write resumed>) = 16777216 [pid 5131] <... munmap resumed>) = 0 [pid 5132] munmap(0x7fd745acd000, 16777216) = 0 [pid 5132] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5132] ioctl(4, LOOP_SET_FD, 3 [pid 5131] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5129] <... munmap resumed>) = 0 [pid 5131] <... openat resumed>) = 4 [pid 5129] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5131] ioctl(4, LOOP_SET_FD, 3 [pid 5129] <... openat resumed>) = 4 [pid 5132] <... ioctl resumed>) = 0 [ 55.461461][ T5130] loop3: detected capacity change from 0 to 32768 [ 55.487607][ T5127] XFS (loop5): Ending clean mount [ 55.490919][ T5128] XFS (loop2): DAX unsupported by block device. Turning off DAX. [pid 5129] ioctl(4, LOOP_SET_FD, 3 [pid 5132] close(3) = 0 [pid 5132] mkdir("./file0", 0777) = 0 [pid 5132] mount("/dev/loop4", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5131] <... ioctl resumed>) = 0 [pid 5131] close(3) = 0 [pid 5131] mkdir("./file0", 0777) = 0 [pid 5131] mount("/dev/loop0", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5129] <... ioctl resumed>) = 0 [pid 5129] close(3) = 0 [pid 5127] <... mount resumed>) = 0 [pid 5129] mkdir("./file0", 0777) = 0 [pid 5129] mount("/dev/loop1", "./file0", "xfs", MS_NOSUID|MS_SYNCHRONOUS|MS_SILENT, "pqnoenforce,qnoenforce,grpquota,dax,,nouuid" [pid 5127] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5127] chdir("./file0") = 0 [pid 5127] ioctl(4, LOOP_CLR_FD) = 0 [pid 5127] close(4) = 0 [pid 5127] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4 [pid 5127] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5 [ 55.508227][ T5127] XFS (loop5): Quotacheck needed: Please wait. [ 55.509279][ T5128] XFS (loop2): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 55.521327][ T5132] loop4: detected capacity change from 0 to 32768 [ 55.528536][ T5131] loop0: detected capacity change from 0 to 32768 [ 55.534837][ T5129] loop1: detected capacity change from 0 to 32768 [ 55.542822][ T5127] XFS (loop5): Quotacheck: Done. [ 55.549934][ T5130] XFS (loop3): DAX unsupported by block device. Turning off DAX. [pid 5127] sendfile(5, 4, [96] => [826], 2160) = 730 [pid 5127] exit_group(0) = ? [pid 5127] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=29 /* 0.29 s */} --- [pid 5067] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5067] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5067] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5067] getdents64(3, 0x5555566c9620 /* 4 entries */, 32768) = 112 [ 55.590874][ T5128] XFS (loop2): Ending clean mount [ 55.592277][ T5127] syz-executor824 (5127): drop_caches: 2 [ 55.597509][ T5130] XFS (loop3): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 55.613709][ T5131] XFS (loop0): DAX unsupported by block device. Turning off DAX. [ 55.615194][ T5127] syz-executor824 (5127): drop_caches: 2 [ 55.622479][ T5132] XFS (loop4): DAX unsupported by block device. Turning off DAX. [ 55.628896][ T5128] XFS (loop2): Quotacheck needed: Please wait. [pid 5067] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5067] lstat("./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5067] unlink("./1/binderfs") = 0 [pid 5067] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5128] <... mount resumed>) = 0 [pid 5128] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5128] chdir("./file0") = 0 [pid 5128] ioctl(4, LOOP_CLR_FD) = 0 [pid 5128] close(4) = 0 [pid 5128] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4 [pid 5128] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5 [ 55.640521][ T5131] XFS (loop0): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 55.655446][ T5129] XFS (loop1): DAX unsupported by block device. Turning off DAX. [ 55.657808][ T5132] XFS (loop4): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 55.665225][ T5128] XFS (loop2): Quotacheck: Done. [ 55.677711][ T5129] XFS (loop1): Mounting V5 Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [pid 5128] sendfile(5, 4, [96] => [826], 2160) = 730 [pid 5128] exit_group(0) = ? [pid 5128] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=31 /* 0.31 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5064] getdents64(3, 0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5064] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] lstat("./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5064] unlink("./1/binderfs") = 0 [ 55.677889][ T5067] XFS (loop5): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 55.704978][ T5128] syz-executor824 (5128): drop_caches: 2 [pid 5064] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5132] <... mount resumed>) = 0 [pid 5132] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5132] chdir("./file0") = 0 [pid 5132] ioctl(4, LOOP_CLR_FD) = 0 [pid 5132] close(4) = 0 [pid 5132] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4 [pid 5132] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5 [ 55.757492][ T5128] syz-executor824 (5128): drop_caches: 2 [ 55.762500][ T5132] XFS (loop4): Ending clean mount [ 55.789752][ T5132] XFS (loop4): Quotacheck needed: Please wait. [ 55.797351][ T5130] XFS (loop3): Ending clean mount [pid 5132] sendfile(5, 4, [96] => [795], 2160) = 699 [pid 5132] exit_group(0) = ? [pid 5132] +++ exited with 0 +++ [pid 5066] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=26 /* 0.26 s */} --- [pid 5066] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5066] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5066] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5066] getdents64(3, 0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5066] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5066] lstat("./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5066] unlink("./1/binderfs") = 0 [ 55.803862][ T5064] XFS (loop2): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 55.813321][ T5129] XFS (loop1): Ending clean mount [ 55.814277][ T5132] XFS (loop4): Quotacheck: Done. [ 55.818804][ T5131] XFS (loop0): Ending clean mount [ 55.834912][ T5132] syz-executor824 (5132): drop_caches: 2 [ 55.841001][ T5132] syz-executor824 (5132): drop_caches: 2 [ 55.846373][ T5130] XFS (loop3): Quotacheck needed: Please wait. [ 55.868868][ T5129] XFS (loop1): Quotacheck needed: Please wait. [ 55.878764][ T5066] XFS (loop4): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 55.881563][ T5131] XFS (loop0): Quotacheck needed: Please wait. [pid 5066] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5129] <... mount resumed>) = 0 [pid 5130] <... mount resumed>) = 0 [pid 5130] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5130] chdir("./file0") = 0 [pid 5130] ioctl(4, LOOP_CLR_FD) = 0 [ 55.910526][ T5130] XFS (loop3): Quotacheck: Done. [pid 5129] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5130] close(4) = 0 [pid 5129] <... openat resumed>) = 3 [pid 5129] chdir("./file0") = 0 [pid 5129] ioctl(4, LOOP_CLR_FD) = 0 [pid 5129] close(4) = 0 [pid 5129] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4 [pid 5129] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5 [pid 5129] sendfile(5, 4, [96] [pid 5130] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4 [pid 5130] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5 [ 55.945085][ T5129] XFS (loop1): Quotacheck: Done. [pid 5130] sendfile(5, 4, [96] [pid 5131] <... mount resumed>) = 0 [ 55.978691][ T5131] XFS (loop0): Quotacheck: Done. [pid 5131] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5131] chdir("./file0") = 0 [pid 5131] ioctl(4, LOOP_CLR_FD) = 0 [pid 5067] <... umount2 resumed>) = 0 [pid 5131] close(4) = 0 [pid 5131] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4 [pid 5131] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5 [pid 5131] sendfile(5, 4, [96] [pid 5067] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5067] lstat("./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 56.005356][ T5129] syz-executor824 (5129): drop_caches: 2 [ 56.005722][ T5130] syz-executor824 (5130): drop_caches: 2 [pid 5067] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5067] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5067] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5067] getdents64(4, 0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5067] getdents64(4, [pid 5129] <... sendfile resumed> => [764], 2160) = 668 [pid 5067] <... getdents64 resumed>0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5129] exit_group(0 [pid 5067] close(4 [pid 5129] <... exit_group resumed>) = ? [pid 5067] <... close resumed>) = 0 [pid 5129] +++ exited with 0 +++ [pid 5067] rmdir("./1/file0" [pid 5130] <... sendfile resumed> => [764], 2160) = 668 [pid 5067] <... rmdir resumed>) = 0 [pid 5067] getdents64(3, [pid 5063] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=27 /* 0.27 s */} --- [pid 5130] exit_group(0 [pid 5067] <... getdents64 resumed>0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5063] restart_syscall(<... resuming interrupted clone ...> [pid 5130] <... exit_group resumed>) = ? [pid 5067] close(3 [pid 5063] <... restart_syscall resumed>) = 0 [pid 5067] <... close resumed>) = 0 [pid 5130] +++ exited with 0 +++ [pid 5067] rmdir("./1") = 0 [pid 5065] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- [pid 5063] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5067] mkdir("./2", 0777 [pid 5063] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5067] <... mkdir resumed>) = 0 [pid 5063] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5067] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5065] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5063] <... openat resumed>) = 3 [pid 5067] <... openat resumed>) = 3 [pid 5065] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5063] fstat(3, [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5065] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5063] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5067] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5065] <... openat resumed>) = 3 [pid 5063] getdents64(3, [pid 5067] close(3 [pid 5065] fstat(3, [pid 5063] <... getdents64 resumed>0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5067] <... close resumed>) = 0 [pid 5065] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5063] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5065] getdents64(3, [pid 5063] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5065] <... getdents64 resumed>0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5063] lstat("./1/binderfs", [pid 5067] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5183 [pid 5065] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5063] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5065] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5063] unlink("./1/binderfs" [pid 5065] lstat("./1/binderfs", [pid 5063] <... unlink resumed>) = 0 [pid 5065] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5063] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5131] <... sendfile resumed> => [733], 2160) = 637 [pid 5065] unlink("./1/binderfs" [pid 5131] exit_group(0 [pid 5065] <... unlink resumed>) = 0 [pid 5131] <... exit_group resumed>) = ? [pid 5065] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5183 attached [pid 5131] +++ exited with 0 +++ [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=28 /* 0.28 s */} --- [pid 5062] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5183] chdir("./2" [pid 5062] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5183] <... chdir resumed>) = 0 [pid 5062] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5062] <... openat resumed>) = 3 [pid 5183] <... prctl resumed>) = 0 [pid 5062] fstat(3, [pid 5183] setpgid(0, 0 [pid 5062] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5183] <... setpgid resumed>) = 0 [pid 5062] getdents64(3, [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] <... getdents64 resumed>0x5555566c9620 /* 4 entries */, 32768) = 112 [pid 5183] <... openat resumed>) = 3 [pid 5062] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5183] write(3, "1000", 4 [pid 5062] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5183] <... write resumed>) = 4 [pid 5062] lstat("./1/binderfs", [pid 5183] close(3 [pid 5062] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 56.049178][ T5130] syz-executor824 (5130): drop_caches: 2 [ 56.054380][ T5129] syz-executor824 (5129): drop_caches: 2 [ 56.075707][ T5131] syz-executor824 (5131): drop_caches: 2 [ 56.082686][ T5131] syz-executor824 (5131): drop_caches: 2 [pid 5183] <... close resumed>) = 0 [pid 5062] unlink("./1/binderfs" [pid 5183] symlink("/dev/binderfs", "./binderfs" [pid 5062] <... unlink resumed>) = 0 [pid 5183] <... symlink resumed>) = 0 [pid 5062] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5183] memfd_create("syzkaller", 0) = 3 [pid 5183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd745acd000 [pid 5064] <... umount2 resumed>) = 0 [pid 5064] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] lstat("./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5064] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 56.126540][ T5063] XFS (loop1): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [ 56.165701][ T5065] XFS (loop3): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [pid 5064] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5066] <... umount2 resumed>) = 0 [pid 5064] <... openat resumed>) = 4 [pid 5066] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5064] fstat(4, [pid 5066] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5066] lstat("./1/file0", [pid 5064] getdents64(4, [pid 5066] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5064] <... getdents64 resumed>0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5066] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5064] getdents64(4, [pid 5066] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] <... getdents64 resumed>0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5066] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5064] close(4 [pid 5066] <... openat resumed>) = 4 [pid 5064] <... close resumed>) = 0 [pid 5066] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5064] rmdir("./1/file0" [pid 5066] getdents64(4, [pid 5064] <... rmdir resumed>) = 0 [pid 5066] <... getdents64 resumed>0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(3, [pid 5066] getdents64(4, [pid 5064] <... getdents64 resumed>0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5066] <... getdents64 resumed>0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5066] close(4 [pid 5064] close(3 [pid 5066] <... close resumed>) = 0 [pid 5064] <... close resumed>) = 0 [pid 5066] rmdir("./1/file0" [pid 5064] rmdir("./1") = 0 [pid 5066] <... rmdir resumed>) = 0 [pid 5064] mkdir("./2", 0777 [pid 5066] getdents64(3, 0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5064] <... mkdir resumed>) = 0 [pid 5066] close(3 [pid 5064] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5066] <... close resumed>) = 0 [pid 5066] rmdir("./1" [pid 5064] <... openat resumed>) = 3 [pid 5066] <... rmdir resumed>) = 0 [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5066] mkdir("./2", 0777 [pid 5064] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5066] <... mkdir resumed>) = 0 [pid 5066] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5064] close(3 [pid 5066] <... openat resumed>) = 3 [pid 5064] <... close resumed>) = 0 [ 56.187256][ T5062] XFS (loop0): Unmounting Filesystem c496e05e-540d-4c72-b591-04d79d8b4eeb [pid 5066] ioctl(3, LOOP_CLR_FD [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5066] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5066] close(3 [pid 5064] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5184 [pid 5066] <... close resumed>) = 0 [pid 5066] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555566c85d0) = 5185 ./strace-static-x86_64: Process 5184 attached [pid 5184] chdir("./2") = 0 [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5185 attached ) = 0 [pid 5184] setpgid(0, 0 [pid 5185] chdir("./2" [pid 5184] <... setpgid resumed>) = 0 [pid 5185] <... chdir resumed>) = 0 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5184] <... openat resumed>) = 3 [pid 5185] <... prctl resumed>) = 0 [pid 5184] write(3, "1000", 4 [pid 5185] setpgid(0, 0 [pid 5184] <... write resumed>) = 4 [pid 5185] <... setpgid resumed>) = 0 [pid 5184] close(3 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5184] <... close resumed>) = 0 [pid 5185] <... openat resumed>) = 3 [pid 5184] symlink("/dev/binderfs", "./binderfs" [pid 5185] write(3, "1000", 4 [pid 5184] <... symlink resumed>) = 0 [pid 5185] <... write resumed>) = 4 [pid 5185] close(3 [pid 5184] memfd_create("syzkaller", 0 [pid 5185] <... close resumed>) = 0 [pid 5184] <... memfd_create resumed>) = 3 [pid 5185] symlink("/dev/binderfs", "./binderfs" [pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5185] <... symlink resumed>) = 0 [pid 5184] <... mmap resumed>) = 0x7fd745acd000 [pid 5185] memfd_create("syzkaller", 0) = 3 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd745acd000 [pid 5063] <... umount2 resumed>) = 0 [pid 5063] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5063] lstat("./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5063] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5063] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5063] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5063] getdents64(4, 0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5063] getdents64(4, 0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5063] close(4) = 0 [pid 5063] rmdir("./1/file0") = 0 [pid 5063] getdents64(3, 0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5063] close(3) = 0 [pid 5063] rmdir("./1") = 0 [pid 5063] mkdir("./2", 0777) = 0 [pid 5063] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5063] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5063] close(3) = 0 [pid 5063] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555566c85d0) = 5186 ./strace-static-x86_64: Process 5186 attached [pid 5186] chdir("./2") = 0 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] setpgid(0, 0) = 0 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5186] write(3, "1000", 4) = 4 [pid 5186] close(3) = 0 [pid 5186] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5186] memfd_create("syzkaller", 0) = 3 [pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd745acd000 [pid 5065] <... umount2 resumed>) = 0 [pid 5065] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5065] lstat("./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5062] <... umount2 resumed>) = 0 [pid 5065] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5062] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5065] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5062] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5065] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5062] lstat("./1/file0", [pid 5065] getdents64(4, 0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5062] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5065] getdents64(4, [pid 5062] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5065] <... getdents64 resumed>0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5062] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5065] close(4 [pid 5062] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5065] <... close resumed>) = 0 [pid 5062] <... openat resumed>) = 4 [pid 5065] rmdir("./1/file0" [pid 5062] fstat(4, [pid 5065] <... rmdir resumed>) = 0 [pid 5062] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5183] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5065] getdents64(3, [pid 5062] getdents64(4, [pid 5065] <... getdents64 resumed>0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5062] <... getdents64 resumed>0x5555566d1660 /* 2 entries */, 32768) = 48 [pid 5065] close(3 [pid 5062] getdents64(4, [pid 5065] <... close resumed>) = 0 [pid 5062] <... getdents64 resumed>0x5555566d1660 /* 0 entries */, 32768) = 0 [pid 5065] rmdir("./1" [pid 5062] close(4 [pid 5065] <... rmdir resumed>) = 0 [pid 5062] <... close resumed>) = 0 [pid 5065] mkdir("./2", 0777 [pid 5062] rmdir("./1/file0" [pid 5065] <... mkdir resumed>) = 0 [pid 5062] <... rmdir resumed>) = 0 [pid 5065] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5062] getdents64(3, [pid 5065] <... openat resumed>) = 3 [pid 5062] <... getdents64 resumed>0x5555566c9620 /* 0 entries */, 32768) = 0 [pid 5185] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5184] write(3, "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc4\x96\xe0\x5e\x54\x0d\x4c\x72\xb5\x91\x04\xd7\x9d\x8b\x4e\xeb\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x11\x40\x00\x00\x00\x00\x00\x00\x11\x41\x00\x00\x00\x00\x00\x00\x11\x42\x00\x00\x00\x01\x00\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x04\x3e"..., 16777216 [pid 5065] ioctl(3, LOOP_CLR_FD [pid 5062] close(3 [pid 5065] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5062] <... close resumed>) = 0 [pid 5065] close(3 [pid 5062] rmdir("./1" [pid 5065] <... close resumed>) = 0 [pid 5062] <... rmdir resumed>) = 0 [pid 5065] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] mkdir("./2", 0777) = 0 [pid 5065] <... clone resumed>, child_tidptr=0x5555566c85d0) = 5187 [pid 5062] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5062] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5062] close(3) = 0 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555566c85d0) = 5188 ./strace-static-x86_64: Process 5187 attached [pid 5187] chdir("./2") = 0 [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5187] setpgid(0, 0) = 0 [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5188 attached ) = 3 [pid 5188] chdir("./2" [pid 5187] write(3, "1000", 4 [pid 5188] <... chdir resumed>) = 0 [pid 5187] <... write resumed>) = 4 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5187] close(3 [pid 5188] <... prctl resumed>) = 0 [pid 5187] <... close resumed>) = 0 [pid 5188] setpgid(0, 0 [pid 5187] symlink("/dev/binderfs", "./binderfs" [pid 5188] <... setpgid resumed>) = 0 [pid 5187] <... symlink resumed>) = 0 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5187] memfd_create("syzkaller", 0