./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4109118476 <...> Warning: Permanently added '10.128.1.103' (ED25519) to the list of known hosts. execve("./syz-executor4109118476", ["./syz-executor4109118476"], 0x7fff25c9d7a0 /* 10 vars */) = 0 brk(NULL) = 0x555571a72000 brk(0x555571a72d00) = 0x555571a72d00 arch_prctl(ARCH_SET_FS, 0x555571a72380) = 0 set_tid_address(0x555571a72650) = 5085 set_robust_list(0x555571a72660, 24) = 0 rseq(0x555571a72ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4109118476", 4096) = 28 getrandom("\xa7\xf3\x1e\x26\xbc\xa6\x53\x49", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555571a72d00 brk(0x555571a93d00) = 0x555571a93d00 brk(0x555571a94000) = 0x555571a94000 mprotect(0x7fb9974fa000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5086 attached , child_tidptr=0x555571a72650) = 5086 [pid 5086] set_robust_list(0x555571a72660, 24) = 0 [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] mkdir("./syzkaller.MnD9Q1", 0700./strace-static-x86_64: Process 5087 attached ) = 0 [pid 5085] <... clone resumed>, child_tidptr=0x555571a72650) = 5087 [pid 5086] chmod("./syzkaller.MnD9Q1", 0777) = 0 [pid 5086] chdir("./syzkaller.MnD9Q1" [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] set_robust_list(0x555571a72660, 24) = 0 [pid 5086] <... chdir resumed>) = 0 [pid 5086] mkdir("./0", 0777 [pid 5087] getrandom( [pid 5086] <... mkdir resumed>) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5087] <... getrandom resumed>"\x09\x9e\xbc\xa9\xa3\x7b\x7d\xdb", 8, GRND_NONBLOCK) = 8 [pid 5086] <... openat resumed>) = 3 [pid 5086] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5088 attached [pid 5087] mkdir("./syzkaller.zyyuC7", 0700 [pid 5085] <... clone resumed>, child_tidptr=0x555571a72650) = 5088 [pid 5088] set_robust_list(0x555571a72660, 24 [pid 5086] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5086] close(3 [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] <... set_robust_list resumed>) = 0 [pid 5087] <... mkdir resumed>) = 0 [pid 5088] getrandom( [pid 5087] chmod("./syzkaller.zyyuC7", 0777 [pid 5086] <... close resumed>) = 0 [pid 5088] <... getrandom resumed>"\x1c\x07\xbc\x55\x46\x3d\xa6\xe1", 8, GRND_NONBLOCK) = 8 [pid 5088] mkdir("./syzkaller.c9JREw", 0700) = 0 ./strace-static-x86_64: Process 5089 attached [pid 5087] <... chmod resumed>) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5088] chmod("./syzkaller.c9JREw", 0777 [pid 5087] chdir("./syzkaller.zyyuC7" [pid 5085] <... clone resumed>, child_tidptr=0x555571a72650) = 5089 [pid 5089] set_robust_list(0x555571a72660, 24 [pid 5088] <... chmod resumed>) = 0 [pid 5087] <... chdir resumed>) = 0 [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5089] <... set_robust_list resumed>) = 0 [pid 5087] mkdir("./0", 0777 [pid 5089] mkdir("./syzkaller.qAkwSJ", 0700 [pid 5087] <... mkdir resumed>) = 0 [pid 5088] chdir("./syzkaller.c9JREw") = 0 [pid 5088] mkdir("./0", 0777) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 5091 attached ./strace-static-x86_64: Process 5090 attached [pid 5085] <... clone resumed>, child_tidptr=0x555571a72650) = 5090 [pid 5091] set_robust_list(0x555571a72660, 24 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] <... openat resumed>) = 3 [pid 5086] <... clone resumed>, child_tidptr=0x555571a72650) = 5091 [pid 5085] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] set_robust_list(0x555571a72660, 24 [pid 5091] <... set_robust_list resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5091] chdir("./0" [pid 5089] <... mkdir resumed>) = 0 [pid 5090] <... set_robust_list resumed>) = 0 [pid 5091] <... chdir resumed>) = 0 [pid 5089] chmod("./syzkaller.qAkwSJ", 0777 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5087] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5089] <... chmod resumed>) = 0 [pid 5085] <... clone resumed>, child_tidptr=0x555571a72650) = 5092 ./strace-static-x86_64: Process 5092 attached [pid 5090] mkdir("./syzkaller.DLVmoE", 0700 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5089] chdir("./syzkaller.qAkwSJ" [pid 5088] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5087] close(3 [pid 5092] set_robust_list(0x555571a72660, 24 [pid 5090] <... mkdir resumed>) = 0 [pid 5091] <... prctl resumed>) = 0 [pid 5089] <... chdir resumed>) = 0 [pid 5088] close(3 [pid 5092] <... set_robust_list resumed>) = 0 [pid 5092] mkdir("./syzkaller.6P8EEg", 0700 [pid 5088] <... close resumed>) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] chmod("./syzkaller.DLVmoE", 0777 [pid 5087] <... close resumed>) = 0 [pid 5091] setpgid(0, 0 [pid 5092] <... mkdir resumed>) = 0 [pid 5090] <... chmod resumed>) = 0 [pid 5091] <... setpgid resumed>) = 0 [pid 5089] mkdir("./0", 0777 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] chdir("./syzkaller.DLVmoE") = 0 [pid 5090] mkdir("./0", 0777./strace-static-x86_64: Process 5094 attached ./strace-static-x86_64: Process 5093 attached [pid 5092] chmod("./syzkaller.6P8EEg", 0777 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] <... mkdir resumed>) = 0 [pid 5094] set_robust_list(0x555571a72660, 24 [pid 5093] set_robust_list(0x555571a72660, 24 [pid 5092] <... chmod resumed>) = 0 [pid 5090] <... mkdir resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... clone resumed>, child_tidptr=0x555571a72650) = 5093 [pid 5087] <... clone resumed>, child_tidptr=0x555571a72650) = 5094 [pid 5094] <... set_robust_list resumed>) = 0 [pid 5093] <... set_robust_list resumed>) = 0 [pid 5094] chdir("./0" [pid 5093] chdir("./0" [pid 5089] <... openat resumed>) = 3 [pid 5092] chdir("./syzkaller.6P8EEg" [pid 5093] <... chdir resumed>) = 0 [pid 5092] <... chdir resumed>) = 0 [pid 5092] mkdir("./0", 0777 [pid 5094] <... chdir resumed>) = 0 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5092] <... mkdir resumed>) = 0 [pid 5091] write(3, "1000", 4 [pid 5089] ioctl(3, LOOP_CLR_FD [pid 5093] <... prctl resumed>) = 0 [pid 5093] setpgid(0, 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5093] <... setpgid resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... write resumed>) = 4 [pid 5089] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5091] close(3) = 0 [pid 5094] <... prctl resumed>) = 0 [pid 5093] <... openat resumed>) = 3 [pid 5092] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5091] symlink("/dev/binderfs", "./binderfs" [pid 5089] close(3 [pid 5094] setpgid(0, 0) = 0 [pid 5093] write(3, "1000", 4) = 4 [pid 5089] <... close resumed>) = 0 [pid 5093] close(3 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5093] <... close resumed>) = 0 [pid 5093] symlink("/dev/binderfs", "./binderfs" [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5093] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 5095 attached [pid 5094] <... openat resumed>) = 3 [pid 5092] <... openat resumed>) = 3 [pid 5090] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5091] <... symlink resumed>) = 0 [pid 5095] set_robust_list(0x555571a72660, 24 [pid 5089] <... clone resumed>, child_tidptr=0x555571a72650) = 5095 [pid 5095] <... set_robust_list resumed>) = 0 [pid 5095] chdir("./0") = 0 [pid 5090] close(3 [pid 5091] memfd_create("syzkaller", 0 [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5090] <... close resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5095] <... prctl resumed>) = 0 [pid 5095] setpgid(0, 0) = 0 [pid 5091] <... memfd_create resumed>) = 3 [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb98f000000 [pid 5094] write(3, "1000", 4 [pid 5093] memfd_create("syzkaller", 0 [pid 5092] ioctl(3, LOOP_CLR_FD [pid 5095] <... openat resumed>) = 3 [pid 5090] <... clone resumed>, child_tidptr=0x555571a72650) = 5096 ./strace-static-x86_64: Process 5096 attached [pid 5094] <... write resumed>) = 4 [pid 5093] <... memfd_create resumed>) = 3 [pid 5092] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5094] close(3 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5092] close(3 [pid 5096] set_robust_list(0x555571a72660, 24 [pid 5094] <... close resumed>) = 0 [pid 5095] write(3, "1000", 4 [pid 5094] symlink("/dev/binderfs", "./binderfs" [pid 5093] <... mmap resumed>) = 0x7fb98f000000 [pid 5096] <... set_robust_list resumed>) = 0 [pid 5092] <... close resumed>) = 0 [pid 5096] chdir("./0" [pid 5095] <... write resumed>) = 4 [pid 5092] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5095] close(3) = 0 [pid 5095] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5094] <... symlink resumed>) = 0 [pid 5095] memfd_create("syzkaller", 0./strace-static-x86_64: Process 5097 attached [pid 5096] <... chdir resumed>) = 0 [pid 5094] memfd_create("syzkaller", 0 [pid 5097] set_robust_list(0x555571a72660, 24 [pid 5092] <... clone resumed>, child_tidptr=0x555571a72650) = 5097 [pid 5097] <... set_robust_list resumed>) = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5094] <... memfd_create resumed>) = 3 [pid 5097] chdir("./0" [pid 5096] <... prctl resumed>) = 0 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5096] setpgid(0, 0 [pid 5094] <... mmap resumed>) = 0x7fb98f000000 [pid 5095] <... memfd_create resumed>) = 3 [pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb98f000000 [pid 5096] <... setpgid resumed>) = 0 [pid 5097] <... chdir resumed>) = 0 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5097] setpgid(0, 0 [pid 5096] <... openat resumed>) = 3 [pid 5097] <... setpgid resumed>) = 0 [pid 5096] write(3, "1000", 4 [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5096] <... write resumed>) = 4 [pid 5096] close(3 [pid 5097] <... openat resumed>) = 3 [pid 5096] <... close resumed>) = 0 [pid 5096] symlink("/dev/binderfs", "./binderfs" [pid 5097] write(3, "1000", 4 [pid 5096] <... symlink resumed>) = 0 [pid 5097] <... write resumed>) = 4 [pid 5096] memfd_create("syzkaller", 0 [pid 5097] close(3) = 0 [pid 5096] <... memfd_create resumed>) = 3 [pid 5097] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5097] memfd_create("syzkaller", 0) = 3 [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 5097] <... mmap resumed>) = 0x7fb98f000000 [pid 5096] <... mmap resumed>) = 0x7fb98f000000 [pid 5091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5094] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5095] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5097] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5093] <... write resumed>) = 16777216 [pid 5094] <... write resumed>) = 16777216 [pid 5093] munmap(0x7fb98f000000, 138412032 [pid 5094] munmap(0x7fb98f000000, 138412032) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5093] <... munmap resumed>) = 0 [pid 5094] <... openat resumed>) = 4 [pid 5093] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5094] ioctl(4, LOOP_SET_FD, 3 [pid 5093] <... openat resumed>) = 4 [pid 5093] ioctl(4, LOOP_SET_FD, 3 [pid 5095] <... write resumed>) = 16777216 [pid 5094] <... ioctl resumed>) = 0 [pid 5093] <... ioctl resumed>) = 0 [ 111.091317][ T5094] loop1: detected capacity change from 0 to 32768 [ 111.100152][ T5093] loop2: detected capacity change from 0 to 32768 [pid 5095] munmap(0x7fb98f000000, 138412032 [pid 5094] close(3 [pid 5093] close(3 [pid 5094] <... close resumed>) = 0 [pid 5093] <... close resumed>) = 0 [pid 5094] close(4 [pid 5093] close(4) = 0 [pid 5093] mkdir("./file0", 0777) = 0 [pid 5094] <... close resumed>) = 0 [pid 5093] mount("/dev/loop2", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"... [pid 5094] mkdir("./file0", 0777) = 0 [pid 5094] mount("/dev/loop1", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"... [pid 5091] <... write resumed>) = 16777216 [pid 5091] munmap(0x7fb98f000000, 138412032 [pid 5095] <... munmap resumed>) = 0 [pid 5094] <... mount resumed>) = 0 [pid 5094] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5093] <... mount resumed>) = 0 [pid 5093] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5094] <... openat resumed>) = 3 [pid 5093] <... openat resumed>) = 3 [pid 5093] chdir("./file0") = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5093] exit_group(0 [pid 5095] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5094] chdir("./file0" [pid 5093] <... exit_group resumed>) = ? [pid 5095] <... openat resumed>) = 4 [pid 5094] <... chdir resumed>) = 0 [pid 5093] +++ exited with 0 +++ [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=40 /* 0.40 s */} --- [pid 5094] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5094] exit_group(0 [pid 5088] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5095] ioctl(4, LOOP_SET_FD, 3 [pid 5094] <... exit_group resumed>) = ? [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5094] +++ exited with 0 +++ [pid 5088] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} --- [pid 5088] newfstatat(3, "", [pid 5087] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] getdents64(3, 0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5087] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5087] <... openat resumed>) = 3 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] newfstatat(3, "", [pid 5088] unlink("./0/binderfs" [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5095] <... ioctl resumed>) = 0 [pid 5091] <... munmap resumed>) = 0 [pid 5088] <... unlink resumed>) = 0 [pid 5095] close(3 [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5087] getdents64(3, [pid 5095] <... close resumed>) = 0 [pid 5091] <... openat resumed>) = 4 [pid 5088] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... getdents64 resumed>0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5095] close(4 [ 111.250515][ T5095] loop3: detected capacity change from 0 to 32768 [pid 5091] ioctl(4, LOOP_SET_FD, 3 [pid 5095] <... close resumed>) = 0 [pid 5091] <... ioctl resumed>) = 0 [pid 5087] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5095] mkdir("./file0", 0777) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5095] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"... [pid 5091] close(3 [pid 5087] unlink("./0/binderfs" [pid 5091] <... close resumed>) = 0 [pid 5091] close(4 [pid 5087] <... unlink resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5087] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] mkdir("./file0", 0777) = 0 [pid 5091] mount("/dev/loop0", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"... [pid 5087] <... umount2 resumed>) = 0 [pid 5087] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] <... mount resumed>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 111.296889][ T5091] loop0: detected capacity change from 0 to 32768 [pid 5091] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5087] newfstatat(AT_FDCWD, "./0/file0", [pid 5091] <... openat resumed>) = 3 [pid 5096] <... write resumed>) = 16777216 [pid 5091] chdir("./file0" [pid 5088] <... umount2 resumed>) = 0 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] <... chdir resumed>) = 0 [pid 5087] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5091] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5097] <... write resumed>) = 16777216 [pid 5091] exit_group(0 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5097] munmap(0x7fb98f000000, 138412032 [pid 5091] <... exit_group resumed>) = ? [pid 5088] newfstatat(AT_FDCWD, "./0/file0", [pid 5087] <... openat resumed>) = 4 [pid 5095] <... mount resumed>) = 0 [pid 5096] munmap(0x7fb98f000000, 138412032 [pid 5095] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5091] +++ exited with 0 +++ [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] newfstatat(4, "", [pid 5095] <... openat resumed>) = 3 [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} --- [pid 5086] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5086] newfstatat(3, "", [pid 5095] chdir("./file0" [pid 5088] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5095] <... chdir resumed>) = 0 [pid 5095] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] getdents64(4, [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5095] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... getdents64 resumed>0x555571a7b730 /* 2 entries */, 32768) = 48 [pid 5086] getdents64(3, [pid 5095] exit_group(0 [pid 5088] <... openat resumed>) = 4 [pid 5087] getdents64(4, [pid 5086] <... getdents64 resumed>0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5095] <... exit_group resumed>) = ? [pid 5088] newfstatat(4, "", [pid 5087] <... getdents64 resumed>0x555571a7b730 /* 0 entries */, 32768) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] close(4 [pid 5086] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] getdents64(4, [pid 5087] <... close resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] rmdir("./0/file0" [pid 5088] <... getdents64 resumed>0x555571a7b730 /* 2 entries */, 32768) = 48 [pid 5086] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] unlink("./0/binderfs" [pid 5088] getdents64(4, [pid 5087] <... rmdir resumed>) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5095] +++ exited with 0 +++ [pid 5088] <... getdents64 resumed>0x555571a7b730 /* 0 entries */, 32768) = 0 [pid 5087] getdents64(3, [pid 5086] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] close(4 [pid 5087] <... getdents64 resumed>0x555571a736f0 /* 0 entries */, 32768) = 0 [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} --- [pid 5088] <... close resumed>) = 0 [pid 5089] restart_syscall(<... resuming interrupted clone ...> [pid 5087] close(3 [pid 5088] rmdir("./0/file0" [pid 5087] <... close resumed>) = 0 [pid 5089] <... restart_syscall resumed>) = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5087] rmdir("./0") = 0 [pid 5088] getdents64(3, [pid 5087] mkdir("./1", 0777 [pid 5089] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5088] <... getdents64 resumed>0x555571a736f0 /* 0 entries */, 32768) = 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] close(3 [pid 5087] <... mkdir resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... close resumed>) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5088] rmdir("./0" [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5089] newfstatat(3, "", [pid 5088] <... rmdir resumed>) = 0 [pid 5087] <... openat resumed>) = 3 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... umount2 resumed>) = 0 [pid 5089] getdents64(3, [pid 5088] mkdir("./1", 0777 [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5086] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... getdents64 resumed>0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... ioctl resumed>) = 0 [pid 5086] newfstatat(AT_FDCWD, "./0/file0", [pid 5089] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5088] <... mkdir resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5087] close(3 [pid 5089] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] <... close resumed>) = 0 [pid 5086] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] unlink("./0/binderfs" [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] <... unlink resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5086] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5099 attached [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5087] <... clone resumed>, child_tidptr=0x555571a72650) = 5099 [pid 5086] <... openat resumed>) = 4 [pid 5099] set_robust_list(0x555571a72660, 24 [pid 5096] <... munmap resumed>) = 0 [pid 5089] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5097] <... munmap resumed>) = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5097] ioctl(4, LOOP_SET_FD, 3 [pid 5099] <... set_robust_list resumed>) = 0 [pid 5086] getdents64(4, [pid 5096] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5086] <... getdents64 resumed>0x555571a7b730 /* 2 entries */, 32768) = 48 [pid 5099] chdir("./1" [pid 5096] <... openat resumed>) = 4 [pid 5099] <... chdir resumed>) = 0 [pid 5097] <... ioctl resumed>) = 0 [pid 5096] ioctl(4, LOOP_SET_FD, 3 [pid 5086] getdents64(4, [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5097] close(3) = 0 [pid 5097] close(4) = 0 [pid 5099] <... prctl resumed>) = 0 [pid 5097] mkdir("./file0", 0777 [pid 5089] <... umount2 resumed>) = 0 [pid 5086] <... getdents64 resumed>0x555571a7b730 /* 0 entries */, 32768) = 0 [pid 5099] setpgid(0, 0 [pid 5097] <... mkdir resumed>) = 0 [pid 5097] mount("/dev/loop5", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"... [pid 5086] close(4 [pid 5099] <... setpgid resumed>) = 0 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5086] <... close resumed>) = 0 [pid 5099] <... openat resumed>) = 3 [pid 5086] rmdir("./0/file0" [pid 5096] <... ioctl resumed>) = 0 [pid 5099] write(3, "1000", 4 [pid 5089] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... rmdir resumed>) = 0 [pid 5099] <... write resumed>) = 4 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5099] close(3 [pid 5086] getdents64(3, [pid 5089] newfstatat(AT_FDCWD, "./0/file0", [pid 5099] <... close resumed>) = 0 [pid 5086] <... getdents64 resumed>0x555571a736f0 /* 0 entries */, 32768) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5099] symlink("/dev/binderfs", "./binderfs" [pid 5086] close(3 [pid 5089] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] <... close resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5099] <... symlink resumed>) = 0 [pid 5089] <... openat resumed>) = 4 [pid 5099] memfd_create("syzkaller", 0 [pid 5089] newfstatat(4, "", [pid 5086] rmdir("./0" [pid 5096] close(3) = 0 [pid 5096] close(4 [pid 5086] <... rmdir resumed>) = 0 [pid 5099] <... memfd_create resumed>) = 3 [pid 5096] <... close resumed>) = 0 [pid 5089] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] mkdir("./1", 0777 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5096] mkdir("./file0", 0777 [pid 5089] getdents64(4, [pid 5099] <... mmap resumed>) = 0x7fb98f000000 [pid 5096] <... mkdir resumed>) = 0 [pid 5089] <... getdents64 resumed>0x555571a7b730 /* 2 entries */, 32768) = 48 [pid 5086] <... mkdir resumed>) = 0 [pid 5089] getdents64(4, [pid 5097] <... mount resumed>) = 0 [pid 5089] <... getdents64 resumed>0x555571a7b730 /* 0 entries */, 32768) = 0 [ 111.485081][ T5097] loop5: detected capacity change from 0 to 32768 [ 111.508218][ T5096] loop4: detected capacity change from 0 to 32768 [pid 5097] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5096] mount("/dev/loop4", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"... [pid 5097] <... openat resumed>) = 3 [pid 5089] close(4 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5097] chdir("./file0") = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5097] exit_group(0) = ? [pid 5097] +++ exited with 0 +++ [pid 5092] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=47 /* 0.47 s */} --- [pid 5092] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... close resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5092] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5092] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5089] rmdir("./0/file0" [pid 5092] <... openat resumed>) = 3 [pid 5089] <... rmdir resumed>) = 0 [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5092] newfstatat(3, "", [pid 5089] getdents64(3, [pid 5092] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5089] <... getdents64 resumed>0x555571a736f0 /* 0 entries */, 32768) = 0 [pid 5086] <... ioctl resumed>) = 0 [pid 5092] getdents64(3, [pid 5089] close(3 [pid 5092] <... getdents64 resumed>0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5086] close(3 [pid 5092] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... close resumed>) = 0 [pid 5092] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5089] rmdir("./0" [pid 5092] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5089] <... rmdir resumed>) = 0 [pid 5092] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5089] mkdir("./1", 0777 [pid 5092] unlink("./0/binderfs" [pid 5089] <... mkdir resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5096] <... mount resumed>) = 0 [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5096] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5092] <... unlink resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5096] <... openat resumed>) = 3 [pid 5089] <... openat resumed>) = 3 [pid 5092] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5101 attached [pid 5096] chdir("./file0" [pid 5101] set_robust_list(0x555571a72660, 24 [pid 5096] <... chdir resumed>) = 0 [pid 5086] <... clone resumed>, child_tidptr=0x555571a72650) = 5101 [pid 5101] <... set_robust_list resumed>) = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5096] exit_group(0) = ? [pid 5101] chdir("./1" [pid 5096] +++ exited with 0 +++ [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=50 /* 0.50 s */} --- [pid 5090] restart_syscall(<... resuming interrupted clone ...> [pid 5101] <... chdir resumed>) = 0 [pid 5090] <... restart_syscall resumed>) = 0 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5101] setpgid(0, 0) = 0 [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] openat(AT_FDCWD, "./0", 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 5101] <... openat resumed>) = 3 [pid 5090] getdents64(3, 0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5090] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5090] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] unlink("./0/binderfs" [pid 5101] write(3, "1000", 4 [pid 5090] <... unlink resumed>) = 0 [pid 5101] <... write resumed>) = 4 [pid 5090] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5101] close(3) = 0 [pid 5101] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5092] <... umount2 resumed>) = 0 [pid 5092] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5092] newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5092] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5092] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5092] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5092] getdents64(4, 0x555571a7b730 /* 2 entries */, 32768) = 48 [pid 5101] memfd_create("syzkaller", 0 [pid 5092] getdents64(4, 0x555571a7b730 /* 0 entries */, 32768) = 0 [pid 5092] close(4) = 0 [pid 5092] rmdir("./0/file0" [pid 5101] <... memfd_create resumed>) = 3 [pid 5092] <... rmdir resumed>) = 0 [pid 5092] getdents64(3, [pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5092] <... getdents64 resumed>0x555571a736f0 /* 0 entries */, 32768) = 0 [pid 5092] close(3) = 0 [pid 5101] <... mmap resumed>) = 0x7fb98f000000 [pid 5092] rmdir("./0") = 0 [pid 5092] mkdir("./1", 0777) = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5092] ioctl(3, LOOP_CLR_FD [pid 5090] <... umount2 resumed>) = 0 [pid 5090] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5090] newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5090] openat(AT_FDCWD, "./0/file0", 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, 0x555571a7b730 /* 2 entries */, 32768) = 48 [pid 5090] getdents64(4, 0x555571a7b730 /* 0 entries */, 32768) = 0 [pid 5090] close(4) = 0 [pid 5090] rmdir("./0/file0") = 0 [pid 5090] getdents64(3, 0x555571a736f0 /* 0 entries */, 32768) = 0 [pid 5090] close(3) = 0 [pid 5090] rmdir("./0") = 0 [pid 5090] mkdir("./1", 0777) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [ 111.836232][ T5102] I/O error, dev loop5, sector 32640 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [pid 5090] ioctl(3, LOOP_CLR_FD [pid 5099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5101] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5088] <... ioctl resumed>) = 0 [pid 5088] close(3) = 0 [pid 5088] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5105 attached , child_tidptr=0x555571a72650) = 5105 [pid 5105] set_robust_list(0x555571a72660, 24) = 0 [pid 5105] chdir("./1") = 0 [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5105] setpgid(0, 0) = 0 [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5105] write(3, "1000", 4) = 4 [pid 5105] close(3) = 0 [pid 5105] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5105] memfd_create("syzkaller", 0) = 3 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb98f000000 [pid 5089] <... ioctl resumed>) = 0 [pid 5089] close(3) = 0 [pid 5089] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5106 attached , child_tidptr=0x555571a72650) = 5106 [pid 5106] set_robust_list(0x555571a72660, 24) = 0 [pid 5106] chdir("./1") = 0 [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5106] setpgid(0, 0) = 0 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5106] write(3, "1000", 4) = 4 [pid 5106] close(3) = 0 [pid 5106] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5092] <... ioctl resumed>) = 0 [pid 5106] memfd_create("syzkaller", 0 [pid 5092] close(3) = 0 [pid 5092] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5106] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 5107 attached [pid 5107] set_robust_list(0x555571a72660, 24 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5092] <... clone resumed>, child_tidptr=0x555571a72650) = 5107 [pid 5107] <... set_robust_list resumed>) = 0 [pid 5106] <... mmap resumed>) = 0x7fb98f000000 [pid 5107] chdir("./1") = 0 [pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5107] setpgid(0, 0) = 0 [pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] <... ioctl resumed>) = 0 [pid 5107] write(3, "1000", 4 [pid 5090] close(3 [pid 5107] <... write resumed>) = 4 [pid 5107] close(3 [pid 5090] <... close resumed>) = 0 [pid 5107] <... close resumed>) = 0 [pid 5090] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5107] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5090] <... clone resumed>, child_tidptr=0x555571a72650) = 5108 ./strace-static-x86_64: Process 5108 attached [pid 5108] set_robust_list(0x555571a72660, 24) = 0 [pid 5107] memfd_create("syzkaller", 0 [pid 5108] chdir("./1" [pid 5107] <... memfd_create resumed>) = 3 [pid 5108] <... chdir resumed>) = 0 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5108] <... prctl resumed>) = 0 [pid 5107] <... mmap resumed>) = 0x7fb98f000000 [pid 5108] setpgid(0, 0) = 0 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5108] write(3, "1000", 4) = 4 [pid 5108] close(3) = 0 [pid 5108] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5108] memfd_create("syzkaller", 0) = 3 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb98f000000 [pid 5105] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5099] <... write resumed>) = 16777216 [pid 5099] munmap(0x7fb98f000000, 138412032 [pid 5107] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5106] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5108] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5099] <... munmap resumed>) = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5101] <... write resumed>) = 16777216 [pid 5099] <... openat resumed>) = 4 [pid 5099] ioctl(4, LOOP_SET_FD, 3 [pid 5101] munmap(0x7fb98f000000, 138412032 [pid 5099] <... ioctl resumed>) = 0 [pid 5099] close(3) = 0 [pid 5099] close(4) = 0 [pid 5099] mkdir("./file0", 0777) = 0 [ 113.321598][ T5099] loop1: detected capacity change from 0 to 32768 [pid 5101] <... munmap resumed>) = 0 [pid 5099] mount("/dev/loop1", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"...) = 0 [pid 5099] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5101] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5099] <... openat resumed>) = 3 [pid 5101] <... openat resumed>) = 4 [pid 5099] chdir("./file0" [pid 5101] ioctl(4, LOOP_SET_FD, 3 [pid 5099] <... chdir resumed>) = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5099] exit_group(0) = ? [pid 5099] +++ exited with 0 +++ [pid 5087] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} --- [pid 5087] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5101] <... ioctl resumed>) = 0 [pid 5087] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5101] close(3 [pid 5087] <... openat resumed>) = 3 [pid 5101] <... close resumed>) = 0 [pid 5087] newfstatat(3, "", [pid 5101] close(4 [pid 5087] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5101] <... close resumed>) = 0 [pid 5087] getdents64(3, [pid 5101] mkdir("./file0", 0777 [pid 5087] <... getdents64 resumed>0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5087] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5101] <... mkdir resumed>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5087] unlink("./1/binderfs") = 0 [pid 5087] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [ 113.443073][ T5101] loop0: detected capacity change from 0 to 32768 [pid 5101] mount("/dev/loop0", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"...) = 0 [pid 5101] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5101] chdir("./file0") = 0 [pid 5101] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5101] exit_group(0) = ? [pid 5101] +++ exited with 0 +++ [pid 5087] <... umount2 resumed>) = 0 [pid 5087] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5101, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=36 /* 0.36 s */} --- [pid 5086] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] <... openat resumed>) = 3 [pid 5087] <... openat resumed>) = 4 [pid 5086] newfstatat(3, "", [pid 5087] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] getdents64(4, [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... getdents64 resumed>0x555571a7b730 /* 2 entries */, 32768) = 48 [pid 5086] getdents64(3, [pid 5087] getdents64(4, [pid 5086] <... getdents64 resumed>0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5087] <... getdents64 resumed>0x555571a7b730 /* 0 entries */, 32768) = 0 [pid 5087] close(4 [pid 5086] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... close resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] rmdir("./1/file0" [pid 5086] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5087] <... rmdir resumed>) = 0 [pid 5086] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] unlink("./1/binderfs" [pid 5087] getdents64(3, 0x555571a736f0 /* 0 entries */, 32768) = 0 [pid 5086] <... unlink resumed>) = 0 [pid 5087] close(3) = 0 [pid 5086] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] rmdir("./1") = 0 [pid 5087] mkdir("./2", 0777 [pid 5086] <... umount2 resumed>) = 0 [pid 5086] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... mkdir resumed>) = 0 [pid 5086] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5086] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5086] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] <... openat resumed>) = 4 [pid 5087] <... openat resumed>) = 3 [pid 5086] newfstatat(4, "", [pid 5087] ioctl(3, LOOP_CLR_FD [pid 5086] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... ioctl resumed>) = 0 [pid 5086] getdents64(4, [pid 5087] close(3 [pid 5086] <... getdents64 resumed>0x555571a7b730 /* 2 entries */, 32768) = 48 [pid 5087] <... close resumed>) = 0 [pid 5087] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] getdents64(4, [pid 5087] <... clone resumed>, child_tidptr=0x555571a72650) = 5109 ./strace-static-x86_64: Process 5109 attached [pid 5109] set_robust_list(0x555571a72660, 24) = 0 [pid 5109] chdir("./2" [pid 5086] <... getdents64 resumed>0x555571a7b730 /* 0 entries */, 32768) = 0 [pid 5109] <... chdir resumed>) = 0 [pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5109] setpgid(0, 0) = 0 [pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5109] write(3, "1000", 4) = 4 [pid 5109] close(3) = 0 [pid 5109] symlink("/dev/binderfs", "./binderfs" [pid 5086] close(4 [pid 5109] <... symlink resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5109] memfd_create("syzkaller", 0 [pid 5086] rmdir("./1/file0" [pid 5109] <... memfd_create resumed>) = 3 [pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb98f000000 [pid 5086] <... rmdir resumed>) = 0 [pid 5086] getdents64(3, 0x555571a736f0 /* 0 entries */, 32768) = 0 [pid 5086] close(3) = 0 [pid 5086] rmdir("./1") = 0 [pid 5086] mkdir("./2", 0777) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5086] ioctl(3, LOOP_CLR_FD [pid 5105] <... write resumed>) = 16777216 [pid 5105] munmap(0x7fb98f000000, 138412032 [pid 5109] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5105] <... munmap resumed>) = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5105] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5105] close(3) = 0 [ 114.189671][ T5105] loop2: detected capacity change from 0 to 32768 [pid 5105] close(4) = 0 [pid 5105] mkdir("./file0", 0777) = 0 [pid 5105] mount("/dev/loop2", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"...) = 0 [pid 5105] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5105] chdir("./file0") = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5105] exit_group(0) = ? [pid 5105] +++ exited with 0 +++ [pid 5088] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=43 /* 0.43 s */} --- [pid 5088] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "./1", 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, 0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5106] <... write resumed>) = 16777216 [pid 5088] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5088] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5106] munmap(0x7fb98f000000, 138412032 [pid 5088] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] unlink("./1/binderfs") = 0 [pid 5088] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5107] <... write resumed>) = 16777216 [pid 5107] munmap(0x7fb98f000000, 138412032 [pid 5108] <... write resumed>) = 16777216 [pid 5108] munmap(0x7fb98f000000, 138412032 [pid 5106] <... munmap resumed>) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] <... umount2 resumed>) = 0 [pid 5088] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5106] <... openat resumed>) = 4 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5106] ioctl(4, LOOP_SET_FD, 3 [pid 5088] newfstatat(AT_FDCWD, "./1/file0", [pid 5108] <... munmap resumed>) = 0 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5106] <... ioctl resumed>) = 0 [pid 5088] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5106] close(3 [pid 5088] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5106] <... close resumed>) = 0 [pid 5088] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5106] close(4 [pid 5088] <... openat resumed>) = 4 [pid 5088] newfstatat(4, "", [pid 5107] <... munmap resumed>) = 0 [pid 5107] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5088] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5107] ioctl(4, LOOP_SET_FD, 3 [pid 5088] getdents64(4, [pid 5106] <... close resumed>) = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5088] <... getdents64 resumed>0x555571a7b730 /* 2 entries */, 32768) = 48 [pid 5108] <... openat resumed>) = 4 [ 114.487827][ T5106] loop3: detected capacity change from 0 to 32768 [ 114.527180][ T5107] loop5: detected capacity change from 0 to 32768 [pid 5088] getdents64(4, [pid 5108] ioctl(4, LOOP_SET_FD, 3 [pid 5106] mkdir("./file0", 0777 [pid 5088] <... getdents64 resumed>0x555571a7b730 /* 0 entries */, 32768) = 0 [pid 5088] close(4) = 0 [pid 5107] <... ioctl resumed>) = 0 [pid 5088] rmdir("./1/file0" [pid 5107] close(3) = 0 [pid 5107] close(4) = 0 [pid 5107] mkdir("./file0", 0777 [pid 5088] <... rmdir resumed>) = 0 [pid 5106] <... mkdir resumed>) = 0 [pid 5088] getdents64(3, 0x555571a736f0 /* 0 entries */, 32768) = 0 [pid 5088] close(3) = 0 [pid 5088] rmdir("./1" [pid 5107] <... mkdir resumed>) = 0 [pid 5088] <... rmdir resumed>) = 0 [pid 5108] <... ioctl resumed>) = 0 [pid 5108] close(3 [pid 5088] mkdir("./2", 0777 [pid 5108] <... close resumed>) = 0 [pid 5106] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"... [pid 5088] <... mkdir resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5108] close(4 [pid 5088] <... openat resumed>) = 3 [pid 5108] <... close resumed>) = 0 [pid 5088] ioctl(3, LOOP_CLR_FD [pid 5108] mkdir("./file0", 0777 [pid 5107] mount("/dev/loop5", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"... [pid 5108] <... mkdir resumed>) = 0 [pid 5106] <... mount resumed>) = 0 [ 114.537768][ T5108] loop4: detected capacity change from 0 to 32768 [pid 5108] mount("/dev/loop4", "./file0", "jfs", MS_NOSUID, "quota,iocharset=cp1250,nodiscard,gid=0x000000000000ee00,discard=0x0000000000000009,nointegrity,quota"... [pid 5106] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5086] <... ioctl resumed>) = 0 [pid 5086] close(3 [pid 5107] <... mount resumed>) = 0 [pid 5106] chdir("./file0" [pid 5108] <... mount resumed>) = 0 [pid 5107] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5107] chdir("./file0" [pid 5106] <... chdir resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5106] exit_group(0 [pid 5107] <... chdir resumed>) = 0 [pid 5107] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5108] <... openat resumed>) = 3 [pid 5107] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5108] chdir("./file0" [pid 5107] exit_group(0 [pid 5086] <... clone resumed>, child_tidptr=0x555571a72650) = 5110 [pid 5108] <... chdir resumed>) = 0 [pid 5107] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5110 attached [pid 5108] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5106] <... exit_group resumed>) = ? [pid 5108] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5108] exit_group(0) = ? [pid 5107] +++ exited with 0 +++ [pid 5108] +++ exited with 0 +++ [pid 5092] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5107, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=37 /* 0.37 s */} --- [pid 5090] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=45 /* 0.45 s */} --- [pid 5110] set_robust_list(0x555571a72660, 24 [pid 5092] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5092] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5092] <... openat resumed>) = 3 [pid 5092] newfstatat(3, "", [pid 5090] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5092] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5090] newfstatat(3, "", [pid 5092] getdents64(3, [pid 5090] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] getdents64(3, [pid 5092] <... getdents64 resumed>0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5090] <... getdents64 resumed>0x555571a736f0 /* 4 entries */, 32768) = 112 [pid 5110] <... set_robust_list resumed>) = 0 [pid 5092] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5090] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5092] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [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 5092] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5090] <... unlink resumed>) = 0 [pid 5092] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5110] chdir("./2" [pid 5106] +++ exited with 0 +++ [pid 5092] unlink("./1/binderfs" [pid 5090] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=37 /* 0.37 s */} --- [pid 5092] <... unlink resumed>) = 0 [pid 5110] <... chdir resumed>) = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5089] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5110] setpgid(0, 0 [pid 5089] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5110] <... setpgid resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5092] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5089] <... openat resumed>) = 3 [pid 5089] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 114.708996][ T5092] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 114.721317][ T5092] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 114.729755][ T5092] CPU: 1 PID: 5092 Comm: syz-executor410 Not tainted 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #0 [ 114.740208][ T5092] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 114.750290][ T5092] RIP: 0010:write_special_inodes+0xa9/0x170 [ 114.756259][ T5092] Code: 2e e8 1b bc d3 07 48 8d 7b 28 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 b1 00 00 00 4c 8b 6b 28 49 8d 7d 30 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 8e 00 00 00 49 8b 7d 30 2e e8 e3 bb d3 07 48 8d [ 114.775894][ T5092] RSP: 0018:ffffc900045a7bb8 EFLAGS: 00010216 [ 114.781986][ T5092] RAX: 0000000000000006 RBX: ffff8880204f3000 RCX: ffffffff81c02f1e [ 114.789977][ T5092] RDX: 0000000000000000 RSI: ffffffff81c02ed1 RDI: 0000000000000030 [ 114.797970][ T5092] RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 [ 114.805964][ T5092] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff81c0f1a0 [ 114.813954][ T5092] R13: 0000000000000000 R14: ffff88802af7d800 R15: ffff888029651000 [ 114.821947][ T5092] FS: 0000555571a72380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 114.830906][ T5092] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 114.837510][ T5092] CR2: 00007ffd5eb67fe8 CR3: 0000000079de4000 CR4: 0000000000350ef0 [ 114.845505][ T5092] Call Trace: [ 114.848798][ T5092] [ 114.851740][ T5092] ? show_regs+0x8c/0xa0 [ 114.856009][ T5092] ? die_addr+0x4f/0xd0 [ 114.860193][ T5092] ? exc_general_protection+0x155/0x230 [ 114.865794][ T5092] ? asm_exc_general_protection+0x26/0x30 [ 114.871545][ T5092] ? __pfx_filemap_flush+0x10/0x10 [ 114.876696][ T5092] ? filemap_fdatawrite_wbc+0xce/0x1c0 [ 114.882181][ T5092] ? filemap_fdatawrite_wbc+0x81/0x1c0 [ 114.887666][ T5092] ? write_special_inodes+0xa9/0x170 [ 114.892986][ T5092] ? write_special_inodes+0x85/0x170 [ 114.898308][ T5092] lmLogSync+0x4a0/0x820 [ 114.902590][ T5092] ? __pfx_lmLogSync+0x10/0x10 [ 114.907395][ T5092] ? __pfx_dquot_writeback_dquots+0x10/0x10 [ 114.913330][ T5092] jfs_syncpt+0x89/0xa0 [ 114.917525][ T5092] jfs_sync_fs+0x83/0xb0 [ 114.921795][ T5092] ? __pfx_jfs_sync_fs+0x10/0x10 [ 114.926759][ T5092] sync_filesystem+0x110/0x290 [ 114.931571][ T5092] generic_shutdown_super+0x7e/0x3d0 [ 114.936944][ T5092] kill_block_super+0x3b/0x90 [ 114.941665][ T5092] deactivate_locked_super+0xc1/0x1a0 [ 114.947064][ T5092] deactivate_super+0xde/0x100 [ 114.951855][ T5092] cleanup_mnt+0x222/0x450 [ 114.956314][ T5092] task_work_run+0x151/0x250 [ 114.960941][ T5092] ? __pfx_task_work_run+0x10/0x10 [ 114.966095][ T5092] ptrace_notify+0x10e/0x130 [ 114.970727][ T5092] syscall_exit_to_user_mode_prepare+0x126/0x260 [ 114.977280][ T5092] syscall_exit_to_user_mode+0x11/0x2a0 [ 114.982864][ T5092] do_syscall_64+0xdc/0x260 [ 114.987400][ T5092] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 114.993322][ T5092] RIP: 0033:0x7fb997481537 [ 114.997756][ T5092] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 115.017389][ T5092] RSP: 002b:00007ffd5eb681b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 115.025827][ T5092] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb997481537 [ 115.033813][ T5092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd5eb68270 [ 115.041801][ T5092] RBP: 00007ffd5eb68270 R08: 0000000000000000 R09: 0000000000000000 [ 115.049788][ T5092] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffd5eb692e0 [pid 5089] getdents64(3, [ 115.068801][ T5092] Modules linked in: [ 115.092023][ T5092] ---[ end trace 0000000000000000 ]--- [ 115.097825][ T5092] RIP: 0010:write_special_inodes+0xa9/0x170 [ 115.103790][ T5092] Code: 2e e8 1b bc d3 07 48 8d 7b 28 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 b1 00 00 00 4c 8b 6b 28 49 8d 7d 30 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 8e 00 00 00 49 8b 7d 30 2e e8 e3 bb d3 07 48 8d [ 115.124932][ T5092] RSP: 0018:ffffc900045a7bb8 EFLAGS: 00010216 [ 115.131045][ T5092] RAX: 0000000000000006 RBX: ffff8880204f3000 RCX: ffffffff81c02f1e [ 115.165532][ T5092] RDX: 0000000000000000 RSI: ffffffff81c02ed1 RDI: 0000000000000030 [ 115.173575][ T5092] RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 [pid 5110] write(3, "1000", 4 [pid 5089] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW