./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1741983915 <...> Warning: Permanently added '10.128.0.4' (ED25519) to the list of known hosts. execve("./syz-executor1741983915", ["./syz-executor1741983915"], 0x7fffbe981bb0 /* 10 vars */) = 0 brk(NULL) = 0x555562322000 brk(0x555562322d00) = 0x555562322d00 arch_prctl(ARCH_SET_FS, 0x555562322380) = 0 set_tid_address(0x555562322650) = 5074 set_robust_list(0x555562322660, 24) = 0 rseq(0x555562322ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1741983915", 4096) = 28 getrandom("\xcc\x27\x51\x14\xe2\x1b\xbe\xc3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555562322d00 brk(0x555562343d00) = 0x555562343d00 brk(0x555562344000) = 0x555562344000 mprotect(0x7f82e75a8000, 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 5075 attached , child_tidptr=0x555562322650) = 5075 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5075] set_robust_list(0x555562322660, 24) = 0 ./strace-static-x86_64: Process 5076 attached [pid 5074] <... clone resumed>, child_tidptr=0x555562322650) = 5076 [pid 5076] set_robust_list(0x555562322660, 24 [pid 5075] mkdir("./syzkaller.8isIrZ", 0700 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5077 attached [pid 5075] <... mkdir resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555562322650) = 5077 [pid 5077] set_robust_list(0x555562322660, 24 [pid 5076] mkdir("./syzkaller.oYGzJi", 0700 [pid 5075] chmod("./syzkaller.8isIrZ", 0777 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] <... set_robust_list resumed>) = 0 [pid 5077] mkdir("./syzkaller.gsxfpF", 0700 [pid 5076] <... mkdir resumed>) = 0 [pid 5075] <... chmod resumed>) = 0 [pid 5076] chmod("./syzkaller.oYGzJi", 0777./strace-static-x86_64: Process 5078 attached ) = 0 [pid 5075] chdir("./syzkaller.8isIrZ" [pid 5074] <... clone resumed>, child_tidptr=0x555562322650) = 5078 [pid 5078] set_robust_list(0x555562322660, 24 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5078] <... set_robust_list resumed>) = 0 [pid 5075] <... chdir resumed>) = 0 [pid 5076] chdir("./syzkaller.oYGzJi" [pid 5075] mkdir("./0", 0777 [pid 5078] mkdir("./syzkaller.HoykoS", 0700 [pid 5076] <... chdir resumed>) = 0 [pid 5077] <... mkdir resumed>) = 0 [pid 5076] mkdir("./0", 0777./strace-static-x86_64: Process 5079 attached [pid 5078] <... mkdir resumed>) = 0 [pid 5077] chmod("./syzkaller.gsxfpF", 0777 [pid 5075] <... mkdir resumed>) = 0 [pid 5079] set_robust_list(0x555562322660, 24 [pid 5078] chmod("./syzkaller.HoykoS", 0777 [pid 5077] <... chmod resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x555562322650) = 5079 [pid 5076] <... mkdir resumed>) = 0 [pid 5079] <... set_robust_list resumed>) = 0 [pid 5078] <... chmod resumed>) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5079] mkdir("./syzkaller.brkG6r", 0700 [pid 5078] chdir("./syzkaller.HoykoS" [pid 5077] chdir("./syzkaller.gsxfpF" [pid 5076] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5075] <... openat resumed>) = 3 [pid 5079] <... mkdir resumed>) = 0 [pid 5078] <... chdir resumed>) = 0 [pid 5077] <... chdir resumed>) = 0 [pid 5075] ioctl(3, LOOP_CLR_FD [pid 5077] mkdir("./0", 0777 [pid 5079] chmod("./syzkaller.brkG6r", 0777 [pid 5078] mkdir("./0", 0777 [pid 5077] <... mkdir resumed>) = 0 [pid 5076] <... openat resumed>) = 3 [pid 5075] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5079] <... chmod resumed>) = 0 ./strace-static-x86_64: Process 5080 attached [pid 5074] <... clone resumed>, child_tidptr=0x555562322650) = 5080 [pid 5078] <... mkdir resumed>) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5075] close(3 [pid 5080] set_robust_list(0x555562322660, 24) = 0 [pid 5079] chdir("./syzkaller.brkG6r" [pid 5078] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5077] <... openat resumed>) = 3 [pid 5076] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5080] mkdir("./syzkaller.PG2sQu", 0700 [pid 5079] <... chdir resumed>) = 0 [pid 5078] <... openat resumed>) = 3 [pid 5075] <... close resumed>) = 0 [pid 5077] ioctl(3, LOOP_CLR_FD [pid 5080] <... mkdir resumed>) = 0 [pid 5079] mkdir("./0", 0777 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5076] close(3 [pid 5075] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5078] <... ioctl resumed>) = -1 ENXIO (No such device or address) ./strace-static-x86_64: Process 5081 attached [pid 5080] chmod("./syzkaller.PG2sQu", 0777 [pid 5079] <... mkdir resumed>) = 0 [pid 5077] close(3 [pid 5076] <... close resumed>) = 0 [pid 5077] <... close resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5078] close(3 [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5082 attached [pid 5081] set_robust_list(0x555562322660, 24 [pid 5080] <... chmod resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5078] <... close resumed>) = 0 [pid 5075] <... clone resumed>, child_tidptr=0x555562322650) = 5081 ./strace-static-x86_64: Process 5083 attached [pid 5082] set_robust_list(0x555562322660, 24 [pid 5081] <... set_robust_list resumed>) = 0 [pid 5080] chdir("./syzkaller.PG2sQu" [pid 5079] <... openat resumed>) = 3 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5083] set_robust_list(0x555562322660, 24 [pid 5082] <... set_robust_list resumed>) = 0 [pid 5081] chdir("./0" [pid 5076] <... clone resumed>, child_tidptr=0x555562322650) = 5082 [pid 5082] chdir("./0" [pid 5081] <... chdir resumed>) = 0 [pid 5080] <... chdir resumed>) = 0 [pid 5079] ioctl(3, LOOP_CLR_FD [pid 5083] <... set_robust_list resumed>) = 0 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5080] mkdir("./0", 0777 [pid 5079] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5077] <... clone resumed>, child_tidptr=0x555562322650) = 5083 [pid 5083] chdir("./0" [pid 5082] <... chdir resumed>) = 0 [pid 5081] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5084 attached [pid 5083] <... chdir resumed>) = 0 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5081] setpgid(0, 0 [pid 5080] <... mkdir resumed>) = 0 [pid 5079] close(3 [pid 5084] set_robust_list(0x555562322660, 24 [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5082] <... prctl resumed>) = 0 [pid 5081] <... setpgid resumed>) = 0 [pid 5078] <... clone resumed>, child_tidptr=0x555562322650) = 5084 [pid 5084] <... set_robust_list resumed>) = 0 [pid 5083] <... prctl resumed>) = 0 [pid 5082] setpgid(0, 0 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] <... close resumed>) = 0 [pid 5084] chdir("./0" [pid 5079] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5084] <... chdir resumed>) = 0 [pid 5083] setpgid(0, 0 [pid 5082] <... setpgid resumed>) = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5083] <... setpgid resumed>) = 0 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5081] <... openat resumed>) = 3 [pid 5080] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5082] <... openat resumed>) = 3 [pid 5080] <... openat resumed>) = 3 [pid 5081] write(3, "1000", 4) = 4 [pid 5082] write(3, "1000", 4 [pid 5081] close(3 [pid 5080] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5086 attached [pid 5084] <... prctl resumed>) = 0 [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] <... write resumed>) = 4 [pid 5081] <... close resumed>) = 0 [pid 5080] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5086] set_robust_list(0x555562322660, 24 [pid 5084] setpgid(0, 0 [pid 5082] close(3 [pid 5081] symlink("/dev/binderfs", "./binderfs" [pid 5083] <... openat resumed>) = 3 [pid 5079] <... clone resumed>, child_tidptr=0x555562322650) = 5086 [pid 5086] <... set_robust_list resumed>) = 0 [pid 5084] <... setpgid resumed>) = 0 [pid 5082] <... close resumed>) = 0 [pid 5081] <... symlink resumed>) = 0 [pid 5080] close(3 [pid 5086] chdir("./0" [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5083] write(3, "1000", 4 [pid 5082] symlink("/dev/binderfs", "./binderfs" [pid 5080] <... close resumed>) = 0 [pid 5086] <... chdir resumed>) = 0 [pid 5083] <... write resumed>) = 4 [pid 5082] <... symlink resumed>) = 0 [pid 5080] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5084] <... openat resumed>) = 3 [pid 5083] close(3 [pid 5081] memfd_create("syzkaller", 0 [pid 5086] <... prctl resumed>) = 0 [pid 5084] write(3, "1000", 4 [pid 5083] <... close resumed>) = 0 [pid 5086] setpgid(0, 0 [pid 5081] <... memfd_create resumed>) = 3 [pid 5086] <... setpgid resumed>) = 0 [pid 5084] <... write resumed>) = 4 [pid 5083] symlink("/dev/binderfs", "./binderfs" [pid 5082] memfd_create("syzkaller", 0 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5084] close(3 [pid 5081] <... mmap resumed>) = 0x7f82df000000 [pid 5084] <... close resumed>) = 0 [pid 5083] <... symlink resumed>) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5082] <... memfd_create resumed>) = 3 [pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82df000000 [pid 5080] <... clone resumed>, child_tidptr=0x555562322650) = 5087 [pid 5086] write(3, "1000", 4 [pid 5084] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 5087 attached [pid 5086] <... write resumed>) = 4 [pid 5087] set_robust_list(0x555562322660, 24 [pid 5086] close(3 [pid 5087] <... set_robust_list resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5084] <... symlink resumed>) = 0 [pid 5087] chdir("./0" [pid 5086] symlink("/dev/binderfs", "./binderfs" [pid 5083] memfd_create("syzkaller", 0 [pid 5086] <... symlink resumed>) = 0 [pid 5084] memfd_create("syzkaller", 0 [pid 5083] <... memfd_create resumed>) = 3 [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5087] <... chdir resumed>) = 0 [pid 5084] <... memfd_create resumed>) = 3 [pid 5083] <... mmap resumed>) = 0x7f82df000000 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5087] <... prctl resumed>) = 0 [pid 5086] memfd_create("syzkaller", 0 [pid 5087] setpgid(0, 0 [pid 5086] <... memfd_create resumed>) = 3 [pid 5087] <... setpgid resumed>) = 0 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5084] <... mmap resumed>) = 0x7f82df000000 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5086] <... mmap resumed>) = 0x7f82df000000 [pid 5087] <... openat resumed>) = 3 [pid 5087] write(3, "1000", 4) = 4 [pid 5087] close(3) = 0 [pid 5087] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5087] memfd_create("syzkaller", 0) = 3 [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82df000000 [pid 5084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5081] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5082] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5087] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5084] <... write resumed>) = 16777216 [pid 5084] munmap(0x7f82df000000, 138412032 [pid 5086] <... write resumed>) = 16777216 [pid 5086] munmap(0x7f82df000000, 138412032 [pid 5084] <... munmap resumed>) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5082] <... write resumed>) = 16777216 [pid 5084] ioctl(4, LOOP_SET_FD, 3 [pid 5082] munmap(0x7f82df000000, 138412032 [pid 5084] <... ioctl resumed>) = 0 [pid 5084] close(3) = 0 [pid 5084] close(4) = 0 [ 112.903680][ T5084] loop3: detected capacity change from 0 to 32768 [pid 5084] mkdir("./bus", 0777 [pid 5086] <... munmap resumed>) = 0 [pid 5084] <... mkdir resumed>) = 0 [pid 5081] <... write resumed>) = 16777216 [pid 5081] munmap(0x7f82df000000, 138412032 [pid 5086] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5086] ioctl(4, LOOP_SET_FD, 3 [pid 5084] mount("/dev/loop3", "./bus", "jfs", MS_I_VERSION, "noquota,iocharset=iso8859-13,errors=continue,integrity,integrity,nodiscard,nointegrity" [pid 5082] <... munmap resumed>) = 0 [pid 5082] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] <... ioctl resumed>) = 0 [pid 5086] close(3) = 0 [pid 5086] close(4) = 0 [pid 5086] mkdir("./bus", 0777 [pid 5082] <... openat resumed>) = 4 [pid 5086] <... mkdir resumed>) = 0 [pid 5082] ioctl(4, LOOP_SET_FD, 3 [ 112.959746][ T5086] loop4: detected capacity change from 0 to 32768 [pid 5086] mount("/dev/loop4", "./bus", "jfs", MS_I_VERSION, "noquota,iocharset=iso8859-13,errors=continue,integrity,integrity,nodiscard,nointegrity" [pid 5084] <... mount resumed>) = 0 [pid 5084] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5082] <... ioctl resumed>) = 0 [pid 5082] close(3 [pid 5084] chdir("./bus") = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5084] exit_group(0) = ? [pid 5082] <... close resumed>) = 0 [pid 5082] close(4) = 0 [pid 5082] mkdir("./bus", 0777 [pid 5084] +++ exited with 0 +++ [pid 5082] <... mkdir resumed>) = 0 [pid 5081] <... munmap resumed>) = 0 [pid 5082] mount("/dev/loop1", "./bus", "jfs", MS_I_VERSION, "noquota,iocharset=iso8859-13,errors=continue,integrity,integrity,nodiscard,nointegrity" [pid 5081] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=38 /* 0.38 s */} --- [pid 5086] <... mount resumed>) = 0 [pid 5086] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5081] <... openat resumed>) = 4 [pid 5078] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [ 113.020533][ T5082] loop1: detected capacity change from 0 to 32768 [pid 5081] ioctl(4, LOOP_SET_FD, 3 [pid 5086] <... openat resumed>) = 3 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5086] chdir("./bus" [pid 5078] <... openat resumed>) = 3 [pid 5086] <... chdir resumed>) = 0 [pid 5078] newfstatat(3, "", [pid 5086] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5078] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5086] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5078] getdents64(3, 0x5555623236f0 /* 4 entries */, 32768) = 104 [pid 5086] exit_group(0 [pid 5078] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5086] <... exit_group resumed>) = ? [pid 5086] +++ exited with 0 +++ [pid 5079] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=45 /* 0.45 s */} --- [pid 5081] <... ioctl resumed>) = 0 [pid 5079] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5082] <... mount resumed>) = 0 [pid 5081] close(3 [pid 5079] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5082] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5081] <... close resumed>) = 0 [pid 5079] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5082] <... openat resumed>) = 3 [pid 5081] close(4 [pid 5079] newfstatat(3, "", [pid 5078] <... umount2 resumed>) = 0 [pid 5079] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5079] getdents64(3, [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5083] <... write resumed>) = 16777216 [pid 5079] <... getdents64 resumed>0x5555623236f0 /* 4 entries */, 32768) = 104 [pid 5078] newfstatat(AT_FDCWD, "./0/bus", [pid 5082] chdir("./bus" [pid 5081] <... close resumed>) = 0 [pid 5079] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5078] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 113.084143][ T5081] loop0: detected capacity change from 0 to 32768 [pid 5087] <... write resumed>) = 16777216 [pid 5082] <... chdir resumed>) = 0 [pid 5081] mkdir("./bus", 0777 [pid 5078] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5087] munmap(0x7f82df000000, 138412032 [pid 5083] munmap(0x7f82df000000, 138412032 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5082] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5081] <... mkdir resumed>) = 0 [pid 5078] <... openat resumed>) = 4 [pid 5082] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5078] newfstatat(4, "", [pid 5081] mount("/dev/loop0", "./bus", "jfs", MS_I_VERSION, "noquota,iocharset=iso8859-13,errors=continue,integrity,integrity,nodiscard,nointegrity" [pid 5078] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5082] exit_group(0 [pid 5078] getdents64(4, 0x55556232b730 /* 2 entries */, 32768) = 48 [pid 5078] getdents64(4, 0x55556232b730 /* 0 entries */, 32768) = 0 [pid 5078] close(4) = 0 [pid 5078] rmdir("./0/bus" [pid 5082] <... exit_group resumed>) = ? [pid 5079] <... umount2 resumed>) = 0 [pid 5078] <... rmdir resumed>) = 0 [pid 5079] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5082] +++ exited with 0 +++ [pid 5078] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=36 /* 0.36 s */} --- [pid 5078] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] unlink("./0/binderfs" [pid 5076] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5078] <... unlink resumed>) = 0 [pid 5078] getdents64(3, [pid 5076] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] <... getdents64 resumed>0x5555623236f0 /* 0 entries */, 32768) = 0 [pid 5076] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5076] newfstatat(3, "", [pid 5079] newfstatat(AT_FDCWD, "./0/bus", [pid 5078] close(3 [pid 5076] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5079] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] <... close resumed>) = 0 [pid 5076] getdents64(3, [pid 5079] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5078] rmdir("./0" [pid 5076] <... getdents64 resumed>0x5555623236f0 /* 4 entries */, 32768) = 104 [pid 5076] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5079] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] <... rmdir resumed>) = 0 [pid 5079] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5079] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] mkdir("./1", 0777 [pid 5079] getdents64(4, [pid 5078] <... mkdir resumed>) = 0 [pid 5079] <... getdents64 resumed>0x55556232b730 /* 2 entries */, 32768) = 48 [pid 5081] <... mount resumed>) = 0 [pid 5079] getdents64(4, 0x55556232b730 /* 0 entries */, 32768) = 0 [pid 5079] close(4 [pid 5078] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5081] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5079] <... close resumed>) = 0 [pid 5081] <... openat resumed>) = 3 [pid 5079] rmdir("./0/bus") = 0 [pid 5076] <... umount2 resumed>) = 0 [pid 5076] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5079] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5076] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5081] chdir("./bus" [pid 5079] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5076] newfstatat(AT_FDCWD, "./0/bus", [pid 5079] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5076] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5081] <... chdir resumed>) = 0 [pid 5079] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] <... openat resumed>) = 3 [pid 5076] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5081] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5079] unlink("./0/binderfs" [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5076] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5083] <... munmap resumed>) = 0 [pid 5079] <... unlink resumed>) = 0 [pid 5076] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] <... munmap resumed>) = 0 [pid 5083] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5081] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5079] getdents64(3, [pid 5076] <... openat resumed>) = 4 [pid 5087] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5083] <... openat resumed>) = 4 [pid 5081] exit_group(0 [pid 5079] <... getdents64 resumed>0x5555623236f0 /* 0 entries */, 32768) = 0 [pid 5076] newfstatat(4, "", [pid 5079] close(3 [pid 5076] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5087] <... openat resumed>) = 4 [pid 5083] ioctl(4, LOOP_SET_FD, 3 [pid 5081] <... exit_group resumed>) = ? [pid 5079] <... close resumed>) = 0 [pid 5076] getdents64(4, [pid 5087] ioctl(4, LOOP_SET_FD, 3 [pid 5079] rmdir("./0" [pid 5076] <... getdents64 resumed>0x55556232b730 /* 2 entries */, 32768) = 48 [pid 5081] +++ exited with 0 +++ [pid 5079] <... rmdir resumed>) = 0 [pid 5076] getdents64(4, [pid 5079] mkdir("./1", 0777 [pid 5076] <... getdents64 resumed>0x55556232b730 /* 0 entries */, 32768) = 0 [pid 5076] close(4 [pid 5075] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=48 /* 0.48 s */} --- [pid 5076] <... close resumed>) = 0 [pid 5076] rmdir("./0/bus" [pid 5079] <... mkdir resumed>) = 0 [pid 5076] <... rmdir resumed>) = 0 [pid 5075] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5079] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5079] ioctl(3, LOOP_CLR_FD [pid 5076] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5075] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5079] <... ioctl resumed>) = 0 [pid 5076] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5075] <... openat resumed>) = 3 [pid 5079] close(3 [pid 5076] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5075] newfstatat(3, "", [pid 5079] <... close resumed>) = 0 [pid 5079] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5075] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5076] unlink("./0/binderfs" [pid 5075] getdents64(3, [pid 5076] <... unlink resumed>) = 0 [pid 5075] <... getdents64 resumed>0x5555623236f0 /* 4 entries */, 32768) = 104 [pid 5075] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5087] <... ioctl resumed>) = 0 [pid 5079] <... clone resumed>, child_tidptr=0x555562322650) = 5090 [pid 5076] getdents64(3, [pid 5087] close(3 [pid 5083] <... ioctl resumed>) = 0 [pid 5076] <... getdents64 resumed>0x5555623236f0 /* 0 entries */, 32768) = 0 [pid 5083] close(3 [pid 5076] close(3 [pid 5087] <... close resumed>) = 0 [pid 5083] <... close resumed>) = 0 [pid 5076] <... close resumed>) = 0 [pid 5087] close(4 [pid 5083] close(4 [pid 5076] rmdir("./0" [pid 5087] <... close resumed>) = 0 [pid 5083] <... close resumed>) = 0 [pid 5076] <... rmdir resumed>) = 0 [pid 5087] mkdir("./bus", 0777 [pid 5083] mkdir("./bus", 0777 [pid 5076] mkdir("./1", 0777./strace-static-x86_64: Process 5090 attached [pid 5087] <... mkdir resumed>) = 0 [pid 5083] <... mkdir resumed>) = 0 [pid 5076] <... mkdir resumed>) = 0 [pid 5075] <... umount2 resumed>) = 0 [pid 5090] set_robust_list(0x555562322660, 24 [pid 5075] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5076] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... set_robust_list resumed>) = 0 [ 113.245376][ T5083] loop2: detected capacity change from 0 to 32768 [ 113.255385][ T5087] loop5: detected capacity change from 0 to 32768 [pid 5087] mount("/dev/loop5", "./bus", "jfs", MS_I_VERSION, "noquota,iocharset=iso8859-13,errors=continue,integrity,integrity,nodiscard,nointegrity" [pid 5083] mount("/dev/loop2", "./bus", "jfs", MS_I_VERSION, "noquota,iocharset=iso8859-13,errors=continue,integrity,integrity,nodiscard,nointegrity" [pid 5076] <... openat resumed>) = 3 [pid 5075] newfstatat(AT_FDCWD, "./0/bus", [pid 5090] chdir("./1" [pid 5075] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] <... chdir resumed>) = 0 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5075] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5090] <... prctl resumed>) = 0 [pid 5076] <... ioctl resumed>) = 0 [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5076] close(3 [pid 5075] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5090] setpgid(0, 0 [pid 5076] <... close resumed>) = 0 [pid 5075] <... openat resumed>) = 4 [pid 5090] <... setpgid resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5075] newfstatat(4, "", [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5075] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5075] getdents64(4, [pid 5090] write(3, "1000", 4 [pid 5075] <... getdents64 resumed>0x55556232b730 /* 2 entries */, 32768) = 48 [pid 5090] <... write resumed>) = 4 [pid 5075] getdents64(4, [pid 5090] close(3 [pid 5075] <... getdents64 resumed>0x55556232b730 /* 0 entries */, 32768) = 0 [pid 5090] <... close resumed>) = 0 [pid 5090] symlink("/dev/binderfs", "./binderfs" [pid 5075] close(4 [pid 5090] <... symlink resumed>) = 0 [pid 5087] <... mount resumed>) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x555562322650) = 5091 [pid 5075] <... close resumed>) = 0 [pid 5075] rmdir("./0/bus" [pid 5090] memfd_create("syzkaller", 0 [pid 5087] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5075] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5091 attached [pid 5087] <... openat resumed>) = 3 [pid 5091] set_robust_list(0x555562322660, 24 [pid 5083] <... mount resumed>) = 0 [pid 5091] <... set_robust_list resumed>) = 0 [pid 5087] chdir("./bus" [pid 5083] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5075] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5090] <... memfd_create resumed>) = 3 [pid 5091] chdir("./1" [pid 5087] <... chdir resumed>) = 0 [pid 5083] <... openat resumed>) = 3 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5090] <... mmap resumed>) = 0x7f82df000000 [pid 5087] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5075] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5091] <... chdir resumed>) = 0 [pid 5087] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5075] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5083] chdir("./bus" [pid 5091] <... prctl resumed>) = 0 [pid 5087] exit_group(0 [pid 5083] <... chdir resumed>) = 0 [pid 5075] unlink("./0/binderfs" [pid 5091] setpgid(0, 0 [pid 5087] <... exit_group resumed>) = ? [pid 5083] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5075] <... unlink resumed>) = 0 [pid 5091] <... setpgid resumed>) = 0 [pid 5087] +++ exited with 0 +++ [pid 5083] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5075] getdents64(3, 0x5555623236f0 /* 0 entries */, 32768) = 0 [pid 5075] close(3) = 0 [pid 5083] exit_group(0 [pid 5080] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} --- [pid 5075] rmdir("./0" [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5083] <... exit_group resumed>) = ? [pid 5080] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5075] <... rmdir resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5083] +++ exited with 0 +++ [pid 5080] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5080] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5077] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=43 /* 0.43 s */} --- [pid 5080] newfstatat(3, "", [pid 5077] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5091] write(3, "1000", 4 [pid 5080] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] <... openat resumed>) = 3 [pid 5075] mkdir("./1", 0777 [pid 5077] newfstatat(3, "", [pid 5091] <... write resumed>) = 4 [pid 5080] getdents64(3, [pid 5077] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5075] <... mkdir resumed>) = 0 [pid 5091] close(3 [pid 5080] <... getdents64 resumed>0x5555623236f0 /* 4 entries */, 32768) = 104 [pid 5077] getdents64(3, [pid 5075] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5080] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5091] <... close resumed>) = 0 [pid 5077] <... getdents64 resumed>0x5555623236f0 /* 4 entries */, 32768) = 104 [pid 5075] <... openat resumed>) = 3 [pid 5091] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5077] umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5091] memfd_create("syzkaller", 0 [pid 5075] ioctl(3, LOOP_CLR_FD) = 0 [pid 5075] close(3) = 0 [pid 5075] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5091] <... memfd_create resumed>) = 3 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82df000000 [pid 5075] <... clone resumed>, child_tidptr=0x555562322650) = 5093 ./strace-static-x86_64: Process 5093 attached [ 113.462558][ T5077] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 113.474880][ T5077] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 113.483314][ T5077] CPU: 0 PID: 5077 Comm: syz-executor174 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 [ 113.493415][ T5077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 113.503491][ T5077] RIP: 0010:write_special_inodes+0xa9/0x170 [ 113.509452][ T5077] Code: 2e e8 6b 04 ce 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 33 04 ce 07 48 8d [ 113.529098][ T5077] RSP: 0018:ffffc90003aefbb8 EFLAGS: 00010216 [ 113.535212][ T5077] RAX: 0000000000000006 RBX: ffff888023131a00 RCX: ffffffff81bf2e0e [ 113.543208][ T5077] RDX: 0000000000000000 RSI: ffffffff81bf2dc1 RDI: 0000000000000030 [ 113.551202][ T5077] RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 [ 113.559194][ T5077] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff81bfefc0 [ 113.567187][ T5077] R13: 0000000000000000 R14: ffff888071189000 R15: ffff88802eb8cac0 [ 113.575205][ T5077] FS: 0000555562322380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 113.584162][ T5077] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 113.590791][ T5077] CR2: 00007f82df176000 CR3: 0000000078d1e000 CR4: 0000000000350ef0 [ 113.598788][ T5077] Call Trace: [ 113.602081][ T5077] [ 113.605023][ T5077] ? show_regs+0x8c/0xa0 [ 113.609296][ T5077] ? die_addr+0x4f/0xd0 [ 113.613480][ T5077] ? exc_general_protection+0x155/0x230 [ 113.619081][ T5077] ? asm_exc_general_protection+0x26/0x30 [ 113.624851][ T5077] ? __pfx_filemap_flush+0x10/0x10 [ 113.630004][ T5077] ? filemap_fdatawrite_wbc+0xce/0x1c0 [ 113.636730][ T5077] ? filemap_fdatawrite_wbc+0x81/0x1c0 [ 113.642240][ T5077] ? write_special_inodes+0xa9/0x170 [ 113.647561][ T5077] ? write_special_inodes+0x85/0x170 [ 113.652972][ T5077] lmLogSync+0x4a0/0x820 [ 113.657258][ T5077] ? __pfx_lmLogSync+0x10/0x10 [ 113.662063][ T5077] ? __pfx_dquot_writeback_dquots+0x10/0x10 [ 113.668012][ T5077] jfs_syncpt+0x89/0xa0 [ 113.672208][ T5077] jfs_sync_fs+0x83/0xb0 [ 113.676500][ T5077] ? __pfx_jfs_sync_fs+0x10/0x10 [ 113.681487][ T5077] sync_filesystem+0x110/0x290 [ 113.686307][ T5077] generic_shutdown_super+0x7e/0x3d0 [ 113.691636][ T5077] kill_block_super+0x3b/0x90 [ 113.696366][ T5077] deactivate_locked_super+0xc1/0x1a0 [ 113.701791][ T5077] deactivate_super+0xde/0x100 [ 113.706599][ T5077] cleanup_mnt+0x222/0x450 [ 113.711052][ T5077] task_work_run+0x151/0x250 [ 113.715680][ T5077] ? __pfx_task_work_run+0x10/0x10 [ 113.720837][ T5077] ptrace_notify+0x10e/0x130 [ 113.725477][ T5077] syscall_exit_to_user_mode_prepare+0x126/0x240 [ 113.731846][ T5077] syscall_exit_to_user_mode+0x11/0x2a0 [ 113.737446][ T5077] do_syscall_64+0xe2/0x260 [ 113.741999][ T5077] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 113.747943][ T5077] RIP: 0033:0x7f82e752f5f7 [ 113.752380][ T5077] 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 [ 113.772028][ T5077] RSP: 002b:00007fff69853308 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 113.780474][ T5077] RAX: 0000000000000000 RBX: 000000000001b32b RCX: 00007f82e752f5f7 [ 113.788463][ T5077] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fff698533c0 [ 113.796452][ T5077] RBP: 00007fff698533c0 R08: 0000000000000000 R09: 0000000000000000 [ 113.804443][ T5077] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff69854430 [ 113.812437][ T5077] R13: 00005555623236c0 R14: 431bde82d7b634db R15: 00007fff69854450 [ 113.820446][ T5077] [ 113.823478][ T5077] Modules linked in: [pid 5093] set_robust_list(0x555562322660, 24) = 0 [pid 5093] chdir("./1") = 0 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5093] setpgid(0, 0) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5093] write(3, "1000", 4) = 4 [pid 5093] close(3) = 0 [pid 5093] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5093] memfd_create("syzkaller", 0) = 3 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82df000000 [pid 5090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [ 114.066127][ T5077] ---[ end trace 0000000000000000 ]--- [ 114.093929][ T5077] RIP: 0010:write_special_inodes+0xa9/0x170 [ 114.118682][ T5077] Code: 2e e8 6b 04 ce 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 33 04 ce 07 48 8d [ 114.189163][ T5077] RSP: 0018:ffffc90003aefbb8 EFLAGS: 00010216 [ 114.222921][ T5077] RAX: 0000000000000006 RBX: ffff888023131a00 RCX: ffffffff81bf2e0e [ 114.278749][ T5077] RDX: 0000000000000000 RSI: ffffffff81bf2dc1 RDI: 0000000000000030 [ 114.287935][ T5077] RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 [ 114.341286][ T5077] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff81bfefc0 [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 [ 114.388712][ T5077] R13: 0000000000000000 R14: ffff888071189000 R15: ffff88802eb8cac0 [ 114.396766][ T5077] FS: 0000555562322380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [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 5078] <... ioctl resumed>) = 0 [ 114.447031][ T5077] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 114.499168][ T5077] CR2: 000055cb5f374468 CR3: 0000000078d1e000 CR4: 0000000000350ef0 [ 114.507225][ T5077] Kernel panic - not syncing: Fatal exception [ 114.513543][ T5077] Kernel Offset: disabled [ 114.517880][ T5077] Rebooting in 86400 seconds..