./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1126221803 <...> [ 101.951296][ T24] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.141' (ED25519) to the list of known hosts. execve("./syz-executor1126221803", ["./syz-executor1126221803"], 0x7ffedffc0fb0 /* 10 vars */) = 0 brk(NULL) = 0x55556e51b000 brk(0x55556e51be00) = 0x55556e51be00 arch_prctl(ARCH_SET_FS, 0x55556e51b480) = 0 set_tid_address(0x55556e51b750) = 5088 set_robust_list(0x55556e51b760, 24) = 0 rseq(0x55556e51bda0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1126221803", 4096) = 28 getrandom("\x3c\xaf\x61\xd0\xac\x78\x37\xe9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556e51be00 brk(0x55556e53ce00) = 0x55556e53ce00 brk(0x55556e53d000) = 0x55556e53d000 mprotect(0x7f185bdae000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f185bd03940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f185bd0c730}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f185bd03940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f185bd0c730}, NULL, 8) = 0 getrandom("\xc2\x38\x32\x5b\xcd\x5e\xbb\x90", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.8NRdy4", 0700) = 0 chmod("./syzkaller.8NRdy4", 0777) = 0 chdir("./syzkaller.8NRdy4") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5089 attached , child_tidptr=0x55556e51b750) = 5089 [pid 5089] set_robust_list(0x55556e51b760, 24) = 0 [pid 5089] chdir("./0") = 0 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5089] setpgid(0, 0) = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5089] write(3, "1000", 4) = 4 [pid 5089] close(3) = 0 [pid 5089] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5089] memfd_create("syzkaller", 0) = 3 [pid 5089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5089] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5089] munmap(0x7f1853800000, 138412032) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5089] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5089] close(3) = 0 [pid 5089] close(4) = 0 [pid 5089] mkdir("./bus", 0777) = 0 [ 107.591460][ T5089] loop0: detected capacity change from 0 to 512 [pid 5089] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5089] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5089] chdir("./bus") = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5089] mkdir("./bus", 0777) = 0 [pid 5089] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 107.649438][ T5089] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 107.662179][ T5089] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/0/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5089] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5089] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5089] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5089] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5089] dup3(5, 4, 0) = 4 [pid 5089] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5089] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5089] exit_group(0) = ? [pid 5089] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 [ 107.807405][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/bus") = 0 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5093 attached , child_tidptr=0x55556e51b750) = 5093 [pid 5093] set_robust_list(0x55556e51b760, 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) = 0x7f1853800000 [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"..., 262144) = 262144 [pid 5093] munmap(0x7f1853800000, 138412032) = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5093] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5093] close(3) = 0 [pid 5093] close(4) = 0 [pid 5093] mkdir("./bus", 0777) = 0 [ 108.050982][ T5093] loop0: detected capacity change from 0 to 512 [pid 5093] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5093] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5093] chdir("./bus") = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 108.096168][ T5093] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 108.109180][ T5093] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/1/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5093] mkdir("./bus", 0777) = 0 [pid 5093] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5093] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5093] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5093] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5093] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5093] dup3(5, 4, 0) = 4 [pid 5093] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5093] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5093] exit_group(0) = ? [pid 5093] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/bus") = 0 umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./1") = 0 mkdir("./2", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 108.231430][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5096 attached , child_tidptr=0x55556e51b750) = 5096 [pid 5096] set_robust_list(0x55556e51b760, 24) = 0 [pid 5096] chdir("./2") = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] setpgid(0, 0) = 0 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5096] write(3, "1000", 4) = 4 [pid 5096] close(3) = 0 [pid 5096] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5096] memfd_create("syzkaller", 0) = 3 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [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"..., 262144) = 262144 [pid 5096] munmap(0x7f1853800000, 138412032) = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5096] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5096] close(3) = 0 [pid 5096] close(4) = 0 [pid 5096] mkdir("./bus", 0777) = 0 [ 108.459091][ T5096] loop0: detected capacity change from 0 to 512 [pid 5096] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5096] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5096] chdir("./bus") = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5096] mkdir("./bus", 0777) = 0 [pid 5096] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 108.510255][ T5096] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 108.523163][ T5096] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/2/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5096] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5096] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5096] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5096] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5096] dup3(5, 4, 0) = 4 [pid 5096] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5096] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5096] exit_group(0) = ? [pid 5096] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 [ 108.626018][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./2/bus") = 0 umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5099 attached , child_tidptr=0x55556e51b750) = 5099 [pid 5099] set_robust_list(0x55556e51b760, 24) = 0 [pid 5099] chdir("./3") = 0 [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5099] setpgid(0, 0) = 0 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5099] write(3, "1000", 4) = 4 [pid 5099] close(3) = 0 [pid 5099] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5099] memfd_create("syzkaller", 0) = 3 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [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"..., 262144) = 262144 [pid 5099] munmap(0x7f1853800000, 138412032) = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5099] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5099] close(3) = 0 [pid 5099] close(4) = 0 [pid 5099] mkdir("./bus", 0777) = 0 [ 108.861890][ T5099] loop0: detected capacity change from 0 to 512 [pid 5099] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5099] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5099] chdir("./bus") = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5099] mkdir("./bus", 0777) = 0 [pid 5099] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5099] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5099] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5099] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5099] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5099] dup3(5, 4, 0) = 4 [ 108.915919][ T5099] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 108.928941][ T5099] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/3/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5099] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5099] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5099] exit_group(0) = ? [pid 5099] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 [ 109.006307][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./3/bus") = 0 umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5102 attached , child_tidptr=0x55556e51b750) = 5102 [pid 5102] set_robust_list(0x55556e51b760, 24) = 0 [pid 5102] chdir("./4") = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5102] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5102] memfd_create("syzkaller", 0) = 3 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5102] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5102] munmap(0x7f1853800000, 138412032) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5102] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5102] close(3) = 0 [pid 5102] close(4) = 0 [pid 5102] mkdir("./bus", 0777) = 0 [ 109.186037][ T5102] loop0: detected capacity change from 0 to 512 [pid 5102] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5102] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5102] chdir("./bus") = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5102] mkdir("./bus", 0777) = 0 [pid 5102] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 109.244797][ T5102] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 109.257628][ T5102] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/4/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5102] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5102] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5102] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5102] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5102] dup3(5, 4, 0) = 4 [pid 5102] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5102] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5102] exit_group(0) = ? [pid 5102] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/bus") = 0 umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./4") = 0 mkdir("./5", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 109.373295][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5105 attached , child_tidptr=0x55556e51b750) = 5105 [pid 5105] set_robust_list(0x55556e51b760, 24) = 0 [pid 5105] chdir("./5") = 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) = 0x7f1853800000 [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"..., 262144) = 262144 [pid 5105] munmap(0x7f1853800000, 138412032) = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5105] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5105] close(3) = 0 [pid 5105] close(4) = 0 [pid 5105] mkdir("./bus", 0777) = 0 [ 109.600600][ T5105] loop0: detected capacity change from 0 to 512 [pid 5105] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5105] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5105] chdir("./bus") = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 109.664433][ T5105] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 109.677207][ T5105] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/5/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5105] mkdir("./bus", 0777) = 0 [pid 5105] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5105] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5105] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5105] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5105] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5105] dup3(5, 4, 0) = 4 [pid 5105] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5105] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5105] exit_group(0) = ? [pid 5105] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/bus") = 0 [ 109.795783][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5108 attached , child_tidptr=0x55556e51b750) = 5108 [pid 5108] set_robust_list(0x55556e51b760, 24) = 0 [pid 5108] chdir("./6") = 0 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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) = 0x7f1853800000 [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"..., 262144) = 262144 [pid 5108] munmap(0x7f1853800000, 138412032) = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5108] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5108] close(3) = 0 [pid 5108] close(4) = 0 [pid 5108] mkdir("./bus", 0777) = 0 [ 110.076733][ T5108] loop0: detected capacity change from 0 to 512 [pid 5108] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5108] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] chdir("./bus") = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5108] mkdir("./bus", 0777) = 0 [pid 5108] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 110.126383][ T5108] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 110.139323][ T5108] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/6/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5108] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5108] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5108] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5108] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5108] dup3(5, 4, 0) = 4 [pid 5108] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5108] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5108] exit_group(0) = ? [pid 5108] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/bus") = 0 umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 110.249412][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5111 attached , child_tidptr=0x55556e51b750) = 5111 [pid 5111] set_robust_list(0x55556e51b760, 24) = 0 [pid 5111] chdir("./7") = 0 [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5111] setpgid(0, 0) = 0 [pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5111] write(3, "1000", 4) = 4 [pid 5111] close(3) = 0 [pid 5111] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5111] memfd_create("syzkaller", 0) = 3 [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5111] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5111] munmap(0x7f1853800000, 138412032) = 0 [pid 5111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5111] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5111] close(3) = 0 [pid 5111] close(4) = 0 [pid 5111] mkdir("./bus", 0777) = 0 [ 110.382546][ T5111] loop0: detected capacity change from 0 to 512 [pid 5111] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5111] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5111] chdir("./bus") = 0 [pid 5111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5111] mkdir("./bus", 0777) = 0 [pid 5111] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 110.437804][ T5111] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 110.450473][ T5111] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/7/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5111] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5111] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5111] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5111] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5111] dup3(5, 4, 0) = 4 [pid 5111] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5111] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5111] exit_group(0) = ? [pid 5111] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/bus") = 0 umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 110.590822][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5114 attached , child_tidptr=0x55556e51b750) = 5114 [pid 5114] set_robust_list(0x55556e51b760, 24) = 0 [pid 5114] chdir("./8") = 0 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5114] setpgid(0, 0) = 0 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5114] write(3, "1000", 4) = 4 [pid 5114] close(3) = 0 [pid 5114] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5114] memfd_create("syzkaller", 0) = 3 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5114] munmap(0x7f1853800000, 138412032) = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5114] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5114] close(3) = 0 [pid 5114] close(4) = 0 [pid 5114] mkdir("./bus", 0777) = 0 [ 110.786468][ T5114] loop0: detected capacity change from 0 to 512 [pid 5114] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5114] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] chdir("./bus") = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 110.832135][ T5114] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 110.845064][ T5114] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/8/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5114] mkdir("./bus", 0777) = 0 [pid 5114] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5114] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5114] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5114] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5114] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5114] dup3(5, 4, 0) = 4 [pid 5114] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5114] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5114] exit_group(0) = ? [pid 5114] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/bus") = 0 umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/binderfs") = 0 [ 110.966604][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./8") = 0 mkdir("./9", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5117 attached , child_tidptr=0x55556e51b750) = 5117 [pid 5117] set_robust_list(0x55556e51b760, 24) = 0 [pid 5117] chdir("./9") = 0 [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5117] setpgid(0, 0) = 0 [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5117] write(3, "1000", 4) = 4 [pid 5117] close(3) = 0 [pid 5117] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5117] memfd_create("syzkaller", 0) = 3 [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5117] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5117] munmap(0x7f1853800000, 138412032) = 0 [pid 5117] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5117] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5117] close(3) = 0 [pid 5117] close(4) = 0 [pid 5117] mkdir("./bus", 0777) = 0 [ 111.217245][ T5117] loop0: detected capacity change from 0 to 512 [pid 5117] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5117] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5117] chdir("./bus") = 0 [pid 5117] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5117] mkdir("./bus", 0777) = 0 [pid 5117] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5117] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5117] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5117] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 111.283806][ T5117] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 111.296762][ T5117] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/9/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5117] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5117] dup3(5, 4, 0) = 4 [pid 5117] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5117] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5117] exit_group(0) = ? [pid 5117] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 [ 111.427965][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/bus") = 0 umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./9") = 0 mkdir("./10", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5120 attached , child_tidptr=0x55556e51b750) = 5120 [pid 5120] set_robust_list(0x55556e51b760, 24) = 0 [pid 5120] chdir("./10") = 0 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5120] setpgid(0, 0) = 0 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5120] write(3, "1000", 4) = 4 [pid 5120] close(3) = 0 [pid 5120] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5120] memfd_create("syzkaller", 0) = 3 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5120] munmap(0x7f1853800000, 138412032) = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5120] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5120] close(3) = 0 [pid 5120] close(4) = 0 [pid 5120] mkdir("./bus", 0777) = 0 [ 111.661671][ T5120] loop0: detected capacity change from 0 to 512 [pid 5120] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5120] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] chdir("./bus") = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5120] mkdir("./bus", 0777) = 0 [pid 5120] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5120] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5120] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 111.717362][ T5120] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 111.730615][ T5120] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/10/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5120] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5120] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5120] dup3(5, 4, 0) = 4 [pid 5120] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5120] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5120] exit_group(0) = ? [pid 5120] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 [ 111.842652][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/bus") = 0 umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./10") = 0 mkdir("./11", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5123 attached , child_tidptr=0x55556e51b750) = 5123 [pid 5123] set_robust_list(0x55556e51b760, 24) = 0 [pid 5123] chdir("./11") = 0 [pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5123] setpgid(0, 0) = 0 [pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5123] write(3, "1000", 4) = 4 [pid 5123] close(3) = 0 [pid 5123] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5123] memfd_create("syzkaller", 0) = 3 [pid 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5123] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5123] munmap(0x7f1853800000, 138412032) = 0 [pid 5123] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5123] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5123] close(3) = 0 [pid 5123] close(4) = 0 [pid 5123] mkdir("./bus", 0777) = 0 [ 112.084012][ T5123] loop0: detected capacity change from 0 to 512 [pid 5123] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5123] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5123] chdir("./bus") = 0 [pid 5123] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5123] mkdir("./bus", 0777) = 0 [pid 5123] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5123] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 112.134984][ T5123] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 112.147815][ T5123] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/11/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5123] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5123] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5123] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5123] dup3(5, 4, 0) = 4 [pid 5123] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5123] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5123] exit_group(0) = ? [pid 5123] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/bus") = 0 umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./11") = 0 mkdir("./12", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 112.257147][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5126 attached , child_tidptr=0x55556e51b750) = 5126 [pid 5126] set_robust_list(0x55556e51b760, 24) = 0 [pid 5126] chdir("./12") = 0 [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5126] setpgid(0, 0) = 0 [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5126] write(3, "1000", 4) = 4 [pid 5126] close(3) = 0 [pid 5126] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5126] memfd_create("syzkaller", 0) = 3 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5126] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5126] munmap(0x7f1853800000, 138412032) = 0 [pid 5126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5126] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5126] close(3) = 0 [pid 5126] close(4) = 0 [pid 5126] mkdir("./bus", 0777) = 0 [ 112.430651][ T5126] loop0: detected capacity change from 0 to 512 [pid 5126] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5126] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5126] chdir("./bus") = 0 [pid 5126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 112.484725][ T5126] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 112.497584][ T5126] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/12/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5126] mkdir("./bus", 0777) = 0 [pid 5126] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5126] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5126] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5126] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5126] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5126] dup3(5, 4, 0) = 4 [pid 5126] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5126] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5126] exit_group(0) = ? [pid 5126] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 [ 112.624494][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./12/bus") = 0 umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./12") = 0 mkdir("./13", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5129 attached , child_tidptr=0x55556e51b750) = 5129 [pid 5129] set_robust_list(0x55556e51b760, 24) = 0 [pid 5129] chdir("./13") = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5129] setpgid(0, 0) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5129] write(3, "1000", 4) = 4 [pid 5129] close(3) = 0 [pid 5129] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5129] memfd_create("syzkaller", 0) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5129] munmap(0x7f1853800000, 138412032) = 0 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5129] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5129] close(3) = 0 [pid 5129] close(4) = 0 [pid 5129] mkdir("./bus", 0777) = 0 [ 112.904272][ T5129] loop0: detected capacity change from 0 to 512 [ 112.936046][ T5129] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5129] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5129] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5129] chdir("./bus") = 0 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5129] mkdir("./bus", 0777) = 0 [pid 5129] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5129] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5129] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5129] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5129] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5129] dup3(5, 4, 0) = 4 [pid 5129] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5129] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5129] exit_group(0) = ? [ 112.948655][ T5129] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/13/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5129] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/bus") = 0 umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 113.040150][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./13") = 0 mkdir("./14", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5133 attached , child_tidptr=0x55556e51b750) = 5133 [pid 5133] set_robust_list(0x55556e51b760, 24) = 0 [pid 5133] chdir("./14") = 0 [pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5133] setpgid(0, 0) = 0 [pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5133] write(3, "1000", 4) = 4 [pid 5133] close(3) = 0 [pid 5133] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5133] memfd_create("syzkaller", 0) = 3 [pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5133] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5133] munmap(0x7f1853800000, 138412032) = 0 [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5133] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5133] close(3) = 0 [pid 5133] close(4) = 0 [pid 5133] mkdir("./bus", 0777) = 0 [ 113.273094][ T5133] loop0: detected capacity change from 0 to 512 [pid 5133] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5133] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5133] chdir("./bus") = 0 [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5133] mkdir("./bus", 0777) = 0 [pid 5133] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 113.344259][ T5133] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 113.356996][ T5133] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/14/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5133] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5133] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5133] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5133] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5133] dup3(5, 4, 0) = 4 [pid 5133] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5133] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5133] exit_group(0) = ? [pid 5133] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/bus") = 0 umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./14") = 0 mkdir("./15", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 113.499863][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5136 attached , child_tidptr=0x55556e51b750) = 5136 [pid 5136] set_robust_list(0x55556e51b760, 24) = 0 [pid 5136] chdir("./15") = 0 [pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5136] setpgid(0, 0) = 0 [pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5136] write(3, "1000", 4) = 4 [pid 5136] close(3) = 0 [pid 5136] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5136] memfd_create("syzkaller", 0) = 3 [pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5136] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5136] munmap(0x7f1853800000, 138412032) = 0 [pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5136] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5136] close(3) = 0 [pid 5136] close(4) = 0 [pid 5136] mkdir("./bus", 0777) = 0 [ 113.688224][ T5136] loop0: detected capacity change from 0 to 512 [ 113.718522][ T5136] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5136] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5136] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5136] chdir("./bus") = 0 [ 113.731345][ T5136] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/15/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5136] mkdir("./bus", 0777) = 0 [pid 5136] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5136] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5136] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5136] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5136] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5136] dup3(5, 4, 0) = 4 [pid 5136] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5136] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5136] exit_group(0) = ? [pid 5136] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/bus") = 0 umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 [ 113.911031][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 rmdir("./15") = 0 mkdir("./16", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5139 attached , child_tidptr=0x55556e51b750) = 5139 [pid 5139] set_robust_list(0x55556e51b760, 24) = 0 [pid 5139] chdir("./16") = 0 [pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5139] setpgid(0, 0) = 0 [pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5139] write(3, "1000", 4) = 4 [pid 5139] close(3) = 0 [pid 5139] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5139] memfd_create("syzkaller", 0) = 3 [pid 5139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5139] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5139] munmap(0x7f1853800000, 138412032) = 0 [pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5139] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5139] close(3) = 0 [pid 5139] close(4) = 0 [pid 5139] mkdir("./bus", 0777) = 0 [ 114.138293][ T5139] loop0: detected capacity change from 0 to 512 [pid 5139] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5139] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5139] chdir("./bus") = 0 [pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 114.196202][ T5139] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 114.208971][ T5139] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/16/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5139] mkdir("./bus", 0777) = 0 [pid 5139] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5139] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5139] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5139] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5139] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5139] dup3(5, 4, 0) = 4 [pid 5139] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5139] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5139] exit_group(0) = ? [pid 5139] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5139, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/bus") = 0 umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 114.345991][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. unlink("./16/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./16") = 0 mkdir("./17", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5142 attached , child_tidptr=0x55556e51b750) = 5142 [pid 5142] set_robust_list(0x55556e51b760, 24) = 0 [pid 5142] chdir("./17") = 0 [pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5142] setpgid(0, 0) = 0 [pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5142] write(3, "1000", 4) = 4 [pid 5142] close(3) = 0 [pid 5142] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5142] memfd_create("syzkaller", 0) = 3 [pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5142] munmap(0x7f1853800000, 138412032) = 0 [pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5142] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5142] close(3) = 0 [pid 5142] close(4) = 0 [pid 5142] mkdir("./bus", 0777) = 0 [ 114.577952][ T5142] loop0: detected capacity change from 0 to 512 [pid 5142] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5142] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5142] chdir("./bus") = 0 [pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5142] mkdir("./bus", 0777) = 0 [pid 5142] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5142] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 114.625391][ T5142] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 114.638351][ T5142] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/17/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5142] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5142] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5142] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5142] dup3(5, 4, 0) = 4 [pid 5142] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5142] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5142] exit_group(0) = ? [pid 5142] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 [ 114.795658][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/bus") = 0 umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./17") = 0 mkdir("./18", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5145 attached , child_tidptr=0x55556e51b750) = 5145 [pid 5145] set_robust_list(0x55556e51b760, 24) = 0 [pid 5145] chdir("./18") = 0 [pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5145] setpgid(0, 0) = 0 [pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5145] write(3, "1000", 4) = 4 [pid 5145] close(3) = 0 [pid 5145] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5145] memfd_create("syzkaller", 0) = 3 [pid 5145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5145] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5145] munmap(0x7f1853800000, 138412032) = 0 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5145] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5145] close(3) = 0 [pid 5145] close(4) = 0 [pid 5145] mkdir("./bus", 0777) = 0 [ 115.026067][ T5145] loop0: detected capacity change from 0 to 512 [pid 5145] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5145] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5145] chdir("./bus") = 0 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5145] mkdir("./bus", 0777) = 0 [pid 5145] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 115.068867][ T5145] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 115.081784][ T5145] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/18/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5145] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5145] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5145] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5145] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5145] dup3(5, 4, 0) = 4 [pid 5145] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5145] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5145] exit_group(0) = ? [pid 5145] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5145, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/bus") = 0 umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./18") = 0 mkdir("./19", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 115.216328][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5148 attached , child_tidptr=0x55556e51b750) = 5148 [pid 5148] set_robust_list(0x55556e51b760, 24) = 0 [pid 5148] chdir("./19") = 0 [pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5148] setpgid(0, 0) = 0 [pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5148] write(3, "1000", 4) = 4 [pid 5148] close(3) = 0 [pid 5148] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5148] memfd_create("syzkaller", 0) = 3 [pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5148] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5148] munmap(0x7f1853800000, 138412032) = 0 [pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5148] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5148] close(3) = 0 [pid 5148] close(4) = 0 [pid 5148] mkdir("./bus", 0777) = 0 [ 115.399495][ T5148] loop0: detected capacity change from 0 to 512 [pid 5148] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5148] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5148] chdir("./bus") = 0 [pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 115.455360][ T5148] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 115.468053][ T5148] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/19/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5148] mkdir("./bus", 0777) = 0 [pid 5148] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5148] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5148] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5148] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5148] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5148] dup3(5, 4, 0) = 4 [pid 5148] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5148] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5148] exit_group(0) = ? [pid 5148] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5148, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/bus") = 0 umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 115.607763][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./19") = 0 mkdir("./20", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5151 attached , child_tidptr=0x55556e51b750) = 5151 [pid 5151] set_robust_list(0x55556e51b760, 24) = 0 [pid 5151] chdir("./20") = 0 [pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5151] setpgid(0, 0) = 0 [pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5151] write(3, "1000", 4) = 4 [pid 5151] close(3) = 0 [pid 5151] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5151] memfd_create("syzkaller", 0) = 3 [pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5151] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5151] munmap(0x7f1853800000, 138412032) = 0 [pid 5151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5151] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5151] close(3) = 0 [pid 5151] close(4) = 0 [pid 5151] mkdir("./bus", 0777) = 0 [ 115.822075][ T5151] loop0: detected capacity change from 0 to 512 [pid 5151] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5151] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5151] chdir("./bus") = 0 [pid 5151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5151] mkdir("./bus", 0777) = 0 [pid 5151] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5151] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 115.885314][ T5151] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 115.898542][ T5151] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/20/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5151] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5151] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5151] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5151] dup3(5, 4, 0) = 4 [pid 5151] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5151] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5151] exit_group(0) = ? [pid 5151] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/bus") = 0 [ 116.042225][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5154 attached , child_tidptr=0x55556e51b750) = 5154 [pid 5154] set_robust_list(0x55556e51b760, 24) = 0 [pid 5154] chdir("./21") = 0 [pid 5154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5154] setpgid(0, 0) = 0 [pid 5154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5154] write(3, "1000", 4) = 4 [pid 5154] close(3) = 0 [pid 5154] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5154] memfd_create("syzkaller", 0) = 3 [pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5154] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5154] munmap(0x7f1853800000, 138412032) = 0 [pid 5154] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5154] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5154] close(3) = 0 [pid 5154] close(4) = 0 [pid 5154] mkdir("./bus", 0777) = 0 [ 116.302984][ T5154] loop0: detected capacity change from 0 to 512 [pid 5154] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5154] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5154] chdir("./bus") = 0 [pid 5154] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 116.375511][ T5154] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 116.388723][ T5154] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/21/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5154] mkdir("./bus", 0777) = 0 [pid 5154] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5154] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5154] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5154] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5154] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5154] dup3(5, 4, 0) = 4 [pid 5154] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5154] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5154] exit_group(0) = ? [pid 5154] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5154, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./21", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 [ 116.532220][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./21/bus") = 0 umount2("./21/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./21") = 0 mkdir("./22", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5157 attached , child_tidptr=0x55556e51b750) = 5157 [pid 5157] set_robust_list(0x55556e51b760, 24) = 0 [pid 5157] chdir("./22") = 0 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5157] setpgid(0, 0) = 0 [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5157] write(3, "1000", 4) = 4 [pid 5157] close(3) = 0 [pid 5157] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5157] memfd_create("syzkaller", 0) = 3 [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5157] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5157] munmap(0x7f1853800000, 138412032) = 0 [pid 5157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5157] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5157] close(3) = 0 [pid 5157] close(4) = 0 [pid 5157] mkdir("./bus", 0777) = 0 [ 116.794730][ T5157] loop0: detected capacity change from 0 to 512 [pid 5157] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5157] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5157] chdir("./bus") = 0 [pid 5157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5157] mkdir("./bus", 0777) = 0 [pid 5157] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5157] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5157] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5157] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5157] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5157] dup3(5, 4, 0) = 4 [pid 5157] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [ 116.874635][ T5157] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 116.887339][ T5157] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/22/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5157] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5157] exit_group(0) = ? [pid 5157] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./22", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 [ 116.986102][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/bus") = 0 umount2("./22/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./22") = 0 mkdir("./23", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5160 attached , child_tidptr=0x55556e51b750) = 5160 [pid 5160] set_robust_list(0x55556e51b760, 24) = 0 [pid 5160] chdir("./23") = 0 [pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5160] setpgid(0, 0) = 0 [pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5160] write(3, "1000", 4) = 4 [pid 5160] close(3) = 0 [pid 5160] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5160] memfd_create("syzkaller", 0) = 3 [pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5160] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5160] munmap(0x7f1853800000, 138412032) = 0 [pid 5160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5160] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5160] close(3) = 0 [pid 5160] close(4) = 0 [pid 5160] mkdir("./bus", 0777) = 0 [ 117.233204][ T5160] loop0: detected capacity change from 0 to 512 [pid 5160] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5160] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5160] chdir("./bus") = 0 [pid 5160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 117.286652][ T5160] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 117.299451][ T5160] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/23/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5160] mkdir("./bus", 0777) = 0 [pid 5160] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5160] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5160] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5160] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5160] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5160] dup3(5, 4, 0) = 4 [pid 5160] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5160] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5160] exit_group(0) = ? [pid 5160] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5160, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./23", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/bus") = 0 umount2("./23/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 117.407930][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. unlink("./23/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5164 attached , child_tidptr=0x55556e51b750) = 5164 [pid 5164] set_robust_list(0x55556e51b760, 24) = 0 [pid 5164] chdir("./24") = 0 [pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5164] setpgid(0, 0) = 0 [pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5164] write(3, "1000", 4) = 4 [pid 5164] close(3) = 0 [pid 5164] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5164] memfd_create("syzkaller", 0) = 3 [pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5164] munmap(0x7f1853800000, 138412032) = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5164] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5164] close(3) = 0 [pid 5164] close(4) = 0 [pid 5164] mkdir("./bus", 0777) = 0 [ 117.601310][ T5164] loop0: detected capacity change from 0 to 512 [pid 5164] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5164] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5164] chdir("./bus") = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5164] mkdir("./bus", 0777) = 0 [pid 5164] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5164] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 117.655984][ T5164] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 117.669021][ T5164] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/24/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5164] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5164] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5164] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5164] dup3(5, 4, 0) = 4 [pid 5164] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5164] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5164] exit_group(0) = ? [pid 5164] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5164, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./24", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/bus") = 0 umount2("./24/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 117.792385][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5167 attached , child_tidptr=0x55556e51b750) = 5167 [pid 5167] set_robust_list(0x55556e51b760, 24) = 0 [pid 5167] chdir("./25") = 0 [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5167] setpgid(0, 0) = 0 [pid 5167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5167] write(3, "1000", 4) = 4 [pid 5167] close(3) = 0 [pid 5167] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5167] memfd_create("syzkaller", 0) = 3 [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5167] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5167] munmap(0x7f1853800000, 138412032) = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5167] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5167] close(3) = 0 [pid 5167] close(4) = 0 [pid 5167] mkdir("./bus", 0777) = 0 [ 118.013914][ T5167] loop0: detected capacity change from 0 to 512 [pid 5167] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5167] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5167] chdir("./bus") = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5167] mkdir("./bus", 0777) = 0 [pid 5167] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5167] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 118.065542][ T5167] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 118.078328][ T5167] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/25/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5167] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5167] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5167] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5167] dup3(5, 4, 0) = 4 [pid 5167] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5167] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5167] exit_group(0) = ? [pid 5167] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5167, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./25", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/bus") = 0 umount2("./25/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 118.211928][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5170 attached , child_tidptr=0x55556e51b750) = 5170 [pid 5170] set_robust_list(0x55556e51b760, 24) = 0 [pid 5170] chdir("./26") = 0 [pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5170] setpgid(0, 0) = 0 [pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5170] write(3, "1000", 4) = 4 [pid 5170] close(3) = 0 [pid 5170] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5170] memfd_create("syzkaller", 0) = 3 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5170] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5170] munmap(0x7f1853800000, 138412032) = 0 [pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5170] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5170] close(3) = 0 [pid 5170] close(4) = 0 [pid 5170] mkdir("./bus", 0777) = 0 [ 118.396581][ T5170] loop0: detected capacity change from 0 to 512 [pid 5170] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5170] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5170] chdir("./bus") = 0 [pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5170] mkdir("./bus", 0777) = 0 [pid 5170] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5170] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 118.440357][ T5170] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 118.453050][ T5170] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/26/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5170] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5170] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5170] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5170] dup3(5, 4, 0) = 4 [pid 5170] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5170] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5170] exit_group(0) = ? [pid 5170] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./26", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/bus") = 0 umount2("./26/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./26") = 0 mkdir("./27", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 118.556164][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5173 attached [pid 5173] set_robust_list(0x55556e51b760, 24 [pid 5088] <... clone resumed>, child_tidptr=0x55556e51b750) = 5173 [pid 5173] <... set_robust_list resumed>) = 0 [pid 5173] chdir("./27") = 0 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5173] setpgid(0, 0) = 0 [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5173] write(3, "1000", 4) = 4 [pid 5173] close(3) = 0 [pid 5173] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5173] memfd_create("syzkaller", 0) = 3 [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5173] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5173] munmap(0x7f1853800000, 138412032) = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5173] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5173] close(3) = 0 [pid 5173] close(4) = 0 [pid 5173] mkdir("./bus", 0777) = 0 [ 118.749743][ T5173] loop0: detected capacity change from 0 to 512 [pid 5173] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5173] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5173] chdir("./bus") = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5173] mkdir("./bus", 0777) = 0 [pid 5173] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5173] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 118.804285][ T5173] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 118.816993][ T5173] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/27/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5173] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5173] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5173] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5173] dup3(5, 4, 0) = 4 [pid 5173] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5173] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5173] exit_group(0) = ? [pid 5173] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./27", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/bus") = 0 umount2("./27/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 118.925116][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556e51b750) = 5176 ./strace-static-x86_64: Process 5176 attached [pid 5176] set_robust_list(0x55556e51b760, 24) = 0 [pid 5176] chdir("./28") = 0 [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5176] setpgid(0, 0) = 0 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5176] write(3, "1000", 4) = 4 [pid 5176] close(3) = 0 [pid 5176] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5176] memfd_create("syzkaller", 0) = 3 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5176] munmap(0x7f1853800000, 138412032) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5176] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5176] close(3) = 0 [pid 5176] close(4) = 0 [pid 5176] mkdir("./bus", 0777) = 0 [ 119.135553][ T5176] loop0: detected capacity change from 0 to 512 [pid 5176] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5176] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5176] chdir("./bus") = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5176] mkdir("./bus", 0777) = 0 [pid 5176] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 119.204655][ T5176] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 119.217624][ T5176] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/28/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5176] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5176] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5176] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5176] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5176] dup3(5, 4, 0) = 4 [pid 5176] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5176] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5176] exit_group(0) = ? [pid 5176] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./28", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 [ 119.313438][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/bus") = 0 umount2("./28/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./28") = 0 mkdir("./29", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556e51b750) = 5179 ./strace-static-x86_64: Process 5179 attached [pid 5179] set_robust_list(0x55556e51b760, 24) = 0 [pid 5179] chdir("./29") = 0 [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5179] setpgid(0, 0) = 0 [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5179] write(3, "1000", 4) = 4 [pid 5179] close(3) = 0 [pid 5179] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5179] memfd_create("syzkaller", 0) = 3 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5179] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5179] munmap(0x7f1853800000, 138412032) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5179] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5179] close(3) = 0 [pid 5179] close(4) = 0 [pid 5179] mkdir("./bus", 0777) = 0 [ 119.566405][ T5179] loop0: detected capacity change from 0 to 512 [pid 5179] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5179] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5179] chdir("./bus") = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 119.626475][ T5179] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 119.639445][ T5179] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/29/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5179] mkdir("./bus", 0777) = 0 [pid 5179] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5179] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5179] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5179] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5179] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5179] dup3(5, 4, 0) = 4 [pid 5179] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5179] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5179] exit_group(0) = ? [pid 5179] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./29", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/bus") = 0 umount2("./29/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./29") = 0 mkdir("./30", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 119.795824][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5182 attached , child_tidptr=0x55556e51b750) = 5182 [pid 5182] set_robust_list(0x55556e51b760, 24) = 0 [pid 5182] chdir("./30") = 0 [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5182] setpgid(0, 0) = 0 [pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5182] write(3, "1000", 4) = 4 [pid 5182] close(3) = 0 [pid 5182] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5182] memfd_create("syzkaller", 0) = 3 [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5182] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5182] munmap(0x7f1853800000, 138412032) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5182] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5182] close(3) = 0 [pid 5182] close(4) = 0 [pid 5182] mkdir("./bus", 0777) = 0 [ 119.965941][ T5182] loop0: detected capacity change from 0 to 512 [pid 5182] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5182] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5182] chdir("./bus") = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5182] mkdir("./bus", 0777) = 0 [pid 5182] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5182] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 120.026851][ T5182] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 120.039590][ T5182] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/30/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5182] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5182] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5182] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5182] dup3(5, 4, 0) = 4 [pid 5182] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5182] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5182] exit_group(0) = ? [pid 5182] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./30", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/bus") = 0 umount2("./30/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./30") = 0 mkdir("./31", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 120.158817][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5185 attached , child_tidptr=0x55556e51b750) = 5185 [pid 5185] set_robust_list(0x55556e51b760, 24) = 0 [pid 5185] chdir("./31") = 0 [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5185] setpgid(0, 0) = 0 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5185] write(3, "1000", 4) = 4 [pid 5185] close(3) = 0 [pid 5185] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5185] memfd_create("syzkaller", 0) = 3 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5185] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5185] munmap(0x7f1853800000, 138412032) = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5185] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5185] close(3) = 0 [pid 5185] close(4) = 0 [pid 5185] mkdir("./bus", 0777) = 0 [ 120.355354][ T5185] loop0: detected capacity change from 0 to 512 [pid 5185] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5185] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5185] chdir("./bus") = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5185] mkdir("./bus", 0777) = 0 [pid 5185] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5185] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 120.409126][ T5185] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 120.421936][ T5185] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/31/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5185] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5185] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5185] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5185] dup3(5, 4, 0) = 4 [pid 5185] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5185] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5185] exit_group(0) = ? [pid 5185] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./31", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/bus") = 0 umount2("./31/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 120.552373][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5188 attached , child_tidptr=0x55556e51b750) = 5188 [pid 5188] set_robust_list(0x55556e51b760, 24) = 0 [pid 5188] chdir("./32") = 0 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5188] setpgid(0, 0) = 0 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5188] write(3, "1000", 4) = 4 [pid 5188] close(3) = 0 [pid 5188] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5188] memfd_create("syzkaller", 0) = 3 [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5188] munmap(0x7f1853800000, 138412032) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5188] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5188] close(3) = 0 [pid 5188] close(4) = 0 [pid 5188] mkdir("./bus", 0777) = 0 [ 120.721727][ T5188] loop0: detected capacity change from 0 to 512 [pid 5188] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5188] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5188] chdir("./bus") = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5188] mkdir("./bus", 0777) = 0 [pid 5188] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5188] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 120.784538][ T5188] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/32/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5188] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5188] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5188] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5188] dup3(5, 4, 0) = 4 [pid 5188] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5188] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5188] exit_group(0) = ? [pid 5188] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./32", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/bus") = 0 umount2("./32/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./32") = 0 mkdir("./33", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5191 attached , child_tidptr=0x55556e51b750) = 5191 [pid 5191] set_robust_list(0x55556e51b760, 24) = 0 [pid 5191] chdir("./33") = 0 [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5191] setpgid(0, 0) = 0 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5191] write(3, "1000", 4) = 4 [pid 5191] close(3) = 0 [pid 5191] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5191] memfd_create("syzkaller", 0) = 3 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5191] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5191] munmap(0x7f1853800000, 138412032) = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5191] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5191] close(3) = 0 [pid 5191] close(4) = 0 [pid 5191] mkdir("./bus", 0777) = 0 [ 121.166665][ T5191] loop0: detected capacity change from 0 to 512 [pid 5191] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5191] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5191] chdir("./bus") = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5191] mkdir("./bus", 0777) = 0 [pid 5191] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5191] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5191] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5191] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5191] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5191] dup3(5, 4, 0) = 4 [pid 5191] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5191] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [ 121.224425][ T5191] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/33/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5191] exit_group(0) = ? [pid 5191] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./33", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/bus") = 0 umount2("./33/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./33") = 0 mkdir("./34", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5194 attached , child_tidptr=0x55556e51b750) = 5194 [pid 5194] set_robust_list(0x55556e51b760, 24) = 0 [pid 5194] chdir("./34") = 0 [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5194] setpgid(0, 0) = 0 [pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5194] write(3, "1000", 4) = 4 [pid 5194] close(3) = 0 [pid 5194] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5194] memfd_create("syzkaller", 0) = 3 [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5194] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5194] munmap(0x7f1853800000, 138412032) = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5194] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5194] close(3) = 0 [pid 5194] close(4) = 0 [pid 5194] mkdir("./bus", 0777) = 0 [ 121.498754][ T5194] loop0: detected capacity change from 0 to 512 [pid 5194] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5194] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5194] chdir("./bus") = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5194] mkdir("./bus", 0777) = 0 [pid 5194] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5194] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 121.555968][ T5194] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/34/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5194] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5194] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5194] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5194] dup3(5, 4, 0) = 4 [pid 5194] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5194] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5194] exit_group(0) = ? [pid 5194] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./34", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/bus") = 0 umount2("./34/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./34") = 0 mkdir("./35", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556e51b750) = 5197 ./strace-static-x86_64: Process 5197 attached [pid 5197] set_robust_list(0x55556e51b760, 24) = 0 [pid 5197] chdir("./35") = 0 [pid 5197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5197] setpgid(0, 0) = 0 [pid 5197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5197] write(3, "1000", 4) = 4 [pid 5197] close(3) = 0 [pid 5197] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5197] memfd_create("syzkaller", 0) = 3 [pid 5197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5197] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5197] munmap(0x7f1853800000, 138412032) = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5197] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5197] close(3) = 0 [pid 5197] close(4) = 0 [pid 5197] mkdir("./bus", 0777) = 0 [ 122.010529][ T5197] loop0: detected capacity change from 0 to 512 [pid 5197] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5197] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5197] chdir("./bus") = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5197] mkdir("./bus", 0777) = 0 [pid 5197] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5197] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5197] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5197] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 122.056781][ T5197] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/35/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5197] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5197] dup3(5, 4, 0) = 4 [pid 5197] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5197] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5197] exit_group(0) = ? [pid 5197] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5197, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./35", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/bus") = 0 umount2("./35/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./35") = 0 mkdir("./36", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5200 attached , child_tidptr=0x55556e51b750) = 5200 [pid 5200] set_robust_list(0x55556e51b760, 24) = 0 [pid 5200] chdir("./36") = 0 [pid 5200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5200] setpgid(0, 0) = 0 [pid 5200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5200] write(3, "1000", 4) = 4 [pid 5200] close(3) = 0 [pid 5200] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5200] memfd_create("syzkaller", 0) = 3 [pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5200] munmap(0x7f1853800000, 138412032) = 0 [pid 5200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5200] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5200] close(3) = 0 [pid 5200] close(4) = 0 [pid 5200] mkdir("./bus", 0777) = 0 [ 122.318560][ T5200] loop0: detected capacity change from 0 to 512 [pid 5200] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5200] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5200] chdir("./bus") = 0 [pid 5200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5200] mkdir("./bus", 0777) = 0 [pid 5200] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5200] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 122.368745][ T5200] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/36/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5200] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5200] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5200] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5200] dup3(5, 4, 0) = 4 [pid 5200] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5200] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5200] exit_group(0) = ? [pid 5200] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5200, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./36", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/bus") = 0 umount2("./36/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./36") = 0 mkdir("./37", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5203 attached , child_tidptr=0x55556e51b750) = 5203 [pid 5203] set_robust_list(0x55556e51b760, 24) = 0 [pid 5203] chdir("./37") = 0 [pid 5203] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5203] setpgid(0, 0) = 0 [pid 5203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5203] write(3, "1000", 4) = 4 [pid 5203] close(3) = 0 [pid 5203] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5203] memfd_create("syzkaller", 0) = 3 [pid 5203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5203] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5203] munmap(0x7f1853800000, 138412032) = 0 [pid 5203] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5203] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5203] close(3) = 0 [pid 5203] close(4) = 0 [pid 5203] mkdir("./bus", 0777) = 0 [ 122.740690][ T5203] loop0: detected capacity change from 0 to 512 [pid 5203] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5203] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5203] chdir("./bus") = 0 [pid 5203] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5203] mkdir("./bus", 0777) = 0 [pid 5203] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5203] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5203] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5203] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5203] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [ 122.785401][ T5203] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/37/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5203] dup3(5, 4, 0) = 4 [pid 5203] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5203] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5203] exit_group(0) = ? [pid 5203] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5203, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./37", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/bus") = 0 umount2("./37/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./37") = 0 mkdir("./38", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5206 attached , child_tidptr=0x55556e51b750) = 5206 [pid 5206] set_robust_list(0x55556e51b760, 24) = 0 [pid 5206] chdir("./38") = 0 [pid 5206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5206] setpgid(0, 0) = 0 [pid 5206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5206] write(3, "1000", 4) = 4 [pid 5206] close(3) = 0 [pid 5206] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5206] memfd_create("syzkaller", 0) = 3 [pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5206] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5206] munmap(0x7f1853800000, 138412032) = 0 [pid 5206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5206] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5206] close(3) = 0 [pid 5206] close(4) = 0 [pid 5206] mkdir("./bus", 0777) = 0 [ 123.152753][ T5206] loop0: detected capacity change from 0 to 512 [pid 5206] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5206] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5206] chdir("./bus") = 0 [pid 5206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5206] mkdir("./bus", 0777) = 0 [pid 5206] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5206] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 123.225053][ T5206] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/38/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5206] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5206] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5206] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5206] dup3(5, 4, 0) = 4 [pid 5206] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5206] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5206] exit_group(0) = ? [pid 5206] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5206, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./38", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/bus") = 0 umount2("./38/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./38") = 0 mkdir("./39", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5209 attached , child_tidptr=0x55556e51b750) = 5209 [pid 5209] set_robust_list(0x55556e51b760, 24) = 0 [pid 5209] chdir("./39") = 0 [pid 5209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5209] setpgid(0, 0) = 0 [pid 5209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5209] write(3, "1000", 4) = 4 [pid 5209] close(3) = 0 [pid 5209] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5209] memfd_create("syzkaller", 0) = 3 [pid 5209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5209] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5209] munmap(0x7f1853800000, 138412032) = 0 [pid 5209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5209] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5209] close(3) = 0 [pid 5209] close(4) = 0 [pid 5209] mkdir("./bus", 0777) = 0 [ 123.538068][ T5209] loop0: detected capacity change from 0 to 512 [pid 5209] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5209] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5209] chdir("./bus") = 0 [pid 5209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5209] mkdir("./bus", 0777) = 0 [pid 5209] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5209] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 123.586913][ T5209] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/39/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5209] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5209] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5209] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5209] dup3(5, 4, 0) = 4 [pid 5209] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5209] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5209] exit_group(0) = ? [pid 5209] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5209, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./39", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/bus") = 0 umount2("./39/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./39") = 0 mkdir("./40", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5212 attached , child_tidptr=0x55556e51b750) = 5212 [pid 5212] set_robust_list(0x55556e51b760, 24) = 0 [pid 5212] chdir("./40") = 0 [pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5212] setpgid(0, 0) = 0 [pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5212] write(3, "1000", 4) = 4 [pid 5212] close(3) = 0 [pid 5212] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5212] memfd_create("syzkaller", 0) = 3 [pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5212] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5212] munmap(0x7f1853800000, 138412032) = 0 [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5212] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5212] close(3) = 0 [pid 5212] close(4) = 0 [pid 5212] mkdir("./bus", 0777) = 0 [ 123.990116][ T5212] loop0: detected capacity change from 0 to 512 [pid 5212] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5212] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5212] chdir("./bus") = 0 [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5212] mkdir("./bus", 0777) = 0 [pid 5212] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5212] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 124.040620][ T5212] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/40/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5212] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5212] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5212] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5212] dup3(5, 4, 0) = 4 [pid 5212] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5212] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5212] exit_group(0) = ? [pid 5212] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5212, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./40", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/bus") = 0 umount2("./40/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./40") = 0 mkdir("./41", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5216 attached , child_tidptr=0x55556e51b750) = 5216 [pid 5216] set_robust_list(0x55556e51b760, 24) = 0 [pid 5216] chdir("./41") = 0 [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5216] setpgid(0, 0) = 0 [pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5216] write(3, "1000", 4) = 4 [pid 5216] close(3) = 0 [pid 5216] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5216] memfd_create("syzkaller", 0) = 3 [pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5216] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5216] munmap(0x7f1853800000, 138412032) = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5216] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5216] close(3) = 0 [pid 5216] close(4) = 0 [pid 5216] mkdir("./bus", 0777) = 0 [ 124.407709][ T5216] loop0: detected capacity change from 0 to 512 [pid 5216] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5216] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5216] chdir("./bus") = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5216] mkdir("./bus", 0777) = 0 [pid 5216] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5216] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 124.469128][ T5216] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/41/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5216] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5216] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5216] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5216] dup3(5, 4, 0) = 4 [pid 5216] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5216] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5216] exit_group(0) = ? [pid 5216] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./41", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/bus") = 0 umount2("./41/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./41") = 0 mkdir("./42", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5220 attached , child_tidptr=0x55556e51b750) = 5220 [pid 5220] set_robust_list(0x55556e51b760, 24) = 0 [pid 5220] chdir("./42") = 0 [pid 5220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5220] setpgid(0, 0) = 0 [pid 5220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5220] write(3, "1000", 4) = 4 [pid 5220] close(3) = 0 [pid 5220] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5220] memfd_create("syzkaller", 0) = 3 [pid 5220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5220] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5220] munmap(0x7f1853800000, 138412032) = 0 [pid 5220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5220] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5220] close(3) = 0 [pid 5220] close(4) = 0 [pid 5220] mkdir("./bus", 0777) = 0 [ 124.827148][ T5220] loop0: detected capacity change from 0 to 512 [pid 5220] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5220] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5220] chdir("./bus") = 0 [pid 5220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5220] mkdir("./bus", 0777) = 0 [pid 5220] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5220] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5220] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5220] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5220] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5220] dup3(5, 4, 0) = 4 [pid 5220] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5220] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [ 124.878789][ T5220] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/42/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5220] exit_group(0) = ? [pid 5220] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5220, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./42", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/bus") = 0 umount2("./42/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./42") = 0 mkdir("./43", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5223 attached , child_tidptr=0x55556e51b750) = 5223 [pid 5223] set_robust_list(0x55556e51b760, 24) = 0 [pid 5223] chdir("./43") = 0 [pid 5223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5223] setpgid(0, 0) = 0 [pid 5223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5223] write(3, "1000", 4) = 4 [pid 5223] close(3) = 0 [pid 5223] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5223] memfd_create("syzkaller", 0) = 3 [pid 5223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5223] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5223] munmap(0x7f1853800000, 138412032) = 0 [pid 5223] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5223] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5223] close(3) = 0 [pid 5223] close(4) = 0 [pid 5223] mkdir("./bus", 0777) = 0 [ 125.187893][ T5223] loop0: detected capacity change from 0 to 512 [pid 5223] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5223] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5223] chdir("./bus") = 0 [pid 5223] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5223] mkdir("./bus", 0777) = 0 [pid 5223] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 125.245795][ T5223] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/43/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5223] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5223] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5223] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5223] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5223] dup3(5, 4, 0) = 4 [pid 5223] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5223] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5223] exit_group(0) = ? [pid 5223] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5223, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./43", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/bus") = 0 umount2("./43/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./43") = 0 mkdir("./44", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5226 attached , child_tidptr=0x55556e51b750) = 5226 [pid 5226] set_robust_list(0x55556e51b760, 24) = 0 [pid 5226] chdir("./44") = 0 [pid 5226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5226] setpgid(0, 0) = 0 [pid 5226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5226] write(3, "1000", 4) = 4 [pid 5226] close(3) = 0 [pid 5226] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5226] memfd_create("syzkaller", 0) = 3 [pid 5226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5226] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5226] munmap(0x7f1853800000, 138412032) = 0 [pid 5226] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5226] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5226] close(3) = 0 [pid 5226] close(4) = 0 [pid 5226] mkdir("./bus", 0777) = 0 [ 125.589384][ T5226] loop0: detected capacity change from 0 to 512 [pid 5226] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5226] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5226] chdir("./bus") = 0 [pid 5226] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 125.646621][ T5226] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/44/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5226] mkdir("./bus", 0777) = 0 [pid 5226] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5226] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5226] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5226] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5226] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5226] dup3(5, 4, 0) = 4 [pid 5226] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5226] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5226] exit_group(0) = ? [pid 5226] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5226, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./44", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/bus") = 0 umount2("./44/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./44") = 0 mkdir("./45", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5229 attached , child_tidptr=0x55556e51b750) = 5229 [pid 5229] set_robust_list(0x55556e51b760, 24) = 0 [pid 5229] chdir("./45") = 0 [pid 5229] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5229] setpgid(0, 0) = 0 [pid 5229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5229] write(3, "1000", 4) = 4 [pid 5229] close(3) = 0 [pid 5229] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5229] memfd_create("syzkaller", 0) = 3 [pid 5229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5229] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5229] munmap(0x7f1853800000, 138412032) = 0 [pid 5229] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5229] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5229] close(3) = 0 [pid 5229] close(4) = 0 [pid 5229] mkdir("./bus", 0777) = 0 [ 126.068143][ T5229] loop0: detected capacity change from 0 to 512 [pid 5229] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5229] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5229] chdir("./bus") = 0 [pid 5229] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5229] mkdir("./bus", 0777) = 0 [pid 5229] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5229] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5229] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5229] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5229] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5229] dup3(5, 4, 0) = 4 [pid 5229] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5229] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5229] exit_group(0) = ? [ 126.116082][ T5229] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/45/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5229] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5229, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./45", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/bus") = 0 umount2("./45/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./45") = 0 mkdir("./46", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5232 attached , child_tidptr=0x55556e51b750) = 5232 [pid 5232] set_robust_list(0x55556e51b760, 24) = 0 [pid 5232] chdir("./46") = 0 [pid 5232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5232] setpgid(0, 0) = 0 [pid 5232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5232] write(3, "1000", 4) = 4 [pid 5232] close(3) = 0 [pid 5232] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5232] memfd_create("syzkaller", 0) = 3 [pid 5232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5232] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5232] munmap(0x7f1853800000, 138412032) = 0 [pid 5232] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5232] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5232] close(3) = 0 [pid 5232] close(4) = 0 [pid 5232] mkdir("./bus", 0777) = 0 [ 126.417861][ T5232] loop0: detected capacity change from 0 to 512 [pid 5232] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5232] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5232] chdir("./bus") = 0 [pid 5232] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5232] mkdir("./bus", 0777) = 0 [pid 5232] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 126.474622][ T5232] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/46/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5232] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5232] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5232] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5232] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5232] dup3(5, 4, 0) = 4 [pid 5232] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5232] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5232] exit_group(0) = ? [pid 5232] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5232, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./46", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/bus") = 0 umount2("./46/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./46") = 0 mkdir("./47", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5235 attached , child_tidptr=0x55556e51b750) = 5235 [pid 5235] set_robust_list(0x55556e51b760, 24) = 0 [pid 5235] chdir("./47") = 0 [pid 5235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5235] setpgid(0, 0) = 0 [pid 5235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "1000", 4) = 4 [pid 5235] close(3) = 0 [pid 5235] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5235] memfd_create("syzkaller", 0) = 3 [pid 5235] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5235] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5235] munmap(0x7f1853800000, 138412032) = 0 [pid 5235] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5235] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5235] close(3) = 0 [pid 5235] close(4) = 0 [pid 5235] mkdir("./bus", 0777) = 0 [ 126.794526][ T5235] loop0: detected capacity change from 0 to 512 [pid 5235] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5235] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5235] chdir("./bus") = 0 [pid 5235] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5235] mkdir("./bus", 0777) = 0 [pid 5235] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5235] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5235] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5235] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5235] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [ 126.846641][ T5235] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/47/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5235] dup3(5, 4, 0) = 4 [pid 5235] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5235] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5235] exit_group(0) = ? [pid 5235] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5235, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./47", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/bus") = 0 umount2("./47/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./47") = 0 mkdir("./48", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556e51b750) = 5238 ./strace-static-x86_64: Process 5238 attached [pid 5238] set_robust_list(0x55556e51b760, 24) = 0 [pid 5238] chdir("./48") = 0 [pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5238] setpgid(0, 0) = 0 [pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "1000", 4) = 4 [pid 5238] close(3) = 0 [pid 5238] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5238] memfd_create("syzkaller", 0) = 3 [pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5238] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5238] munmap(0x7f1853800000, 138412032) = 0 [pid 5238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5238] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5238] close(3) = 0 [pid 5238] close(4) = 0 [pid 5238] mkdir("./bus", 0777) = 0 [ 127.143660][ T5238] loop0: detected capacity change from 0 to 512 [pid 5238] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5238] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5238] chdir("./bus") = 0 [pid 5238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5238] mkdir("./bus", 0777) = 0 [pid 5238] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5238] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 127.189398][ T5238] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/48/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5238] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5238] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5238] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5238] dup3(5, 4, 0) = 4 [pid 5238] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5238] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5238] exit_group(0) = ? [pid 5238] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5238, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./48", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/bus") = 0 umount2("./48/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./48") = 0 mkdir("./49", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5241 attached , child_tidptr=0x55556e51b750) = 5241 [pid 5241] set_robust_list(0x55556e51b760, 24) = 0 [pid 5241] chdir("./49") = 0 [pid 5241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5241] setpgid(0, 0) = 0 [pid 5241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5241] write(3, "1000", 4) = 4 [pid 5241] close(3) = 0 [pid 5241] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5241] memfd_create("syzkaller", 0) = 3 [pid 5241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5241] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5241] munmap(0x7f1853800000, 138412032) = 0 [pid 5241] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5241] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5241] close(3) = 0 [pid 5241] close(4) = 0 [pid 5241] mkdir("./bus", 0777) = 0 [ 127.512823][ T5241] loop0: detected capacity change from 0 to 512 [pid 5241] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5241] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5241] chdir("./bus") = 0 [pid 5241] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5241] mkdir("./bus", 0777) = 0 [pid 5241] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5241] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 127.566231][ T5241] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/49/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5241] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5241] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5241] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5241] dup3(5, 4, 0) = 4 [pid 5241] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5241] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5241] exit_group(0) = ? [pid 5241] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5241, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./49", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./49/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./49/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./49/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/bus") = 0 umount2("./49/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./49") = 0 mkdir("./50", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5244 attached , child_tidptr=0x55556e51b750) = 5244 [pid 5244] set_robust_list(0x55556e51b760, 24) = 0 [pid 5244] chdir("./50") = 0 [pid 5244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5244] setpgid(0, 0) = 0 [pid 5244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5244] write(3, "1000", 4) = 4 [pid 5244] close(3) = 0 [pid 5244] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5244] memfd_create("syzkaller", 0) = 3 [pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5244] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5244] munmap(0x7f1853800000, 138412032) = 0 [pid 5244] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5244] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5244] close(3) = 0 [pid 5244] close(4) = 0 [pid 5244] mkdir("./bus", 0777) = 0 [ 127.842888][ T5244] loop0: detected capacity change from 0 to 512 [pid 5244] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5244] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5244] chdir("./bus") = 0 [pid 5244] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5244] mkdir("./bus", 0777) = 0 [pid 5244] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5244] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5244] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 127.889749][ T5244] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/50/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5244] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5244] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5244] dup3(5, 4, 0) = 4 [pid 5244] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5244] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5244] exit_group(0) = ? [pid 5244] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5244, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./50", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./50/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./50/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./50/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/bus") = 0 umount2("./50/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./50") = 0 mkdir("./51", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5247 attached , child_tidptr=0x55556e51b750) = 5247 [pid 5247] set_robust_list(0x55556e51b760, 24) = 0 [pid 5247] chdir("./51") = 0 [pid 5247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5247] setpgid(0, 0) = 0 [pid 5247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5247] write(3, "1000", 4) = 4 [pid 5247] close(3) = 0 [pid 5247] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5247] memfd_create("syzkaller", 0) = 3 [pid 5247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5247] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5247] munmap(0x7f1853800000, 138412032) = 0 [pid 5247] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5247] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5247] close(3) = 0 [pid 5247] close(4) = 0 [pid 5247] mkdir("./bus", 0777) = 0 [ 128.217099][ T5247] loop0: detected capacity change from 0 to 512 [pid 5247] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5247] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5247] chdir("./bus") = 0 [pid 5247] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5247] mkdir("./bus", 0777) = 0 [pid 5247] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5247] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5247] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5247] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5247] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5247] dup3(5, 4, 0) = 4 [pid 5247] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [ 128.266745][ T5247] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/51/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5247] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5247] exit_group(0) = ? [pid 5247] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5247, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./51", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./51/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./51/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./51/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/bus") = 0 umount2("./51/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./51") = 0 mkdir("./52", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5250 attached , child_tidptr=0x55556e51b750) = 5250 [pid 5250] set_robust_list(0x55556e51b760, 24) = 0 [pid 5250] chdir("./52") = 0 [pid 5250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5250] setpgid(0, 0) = 0 [pid 5250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5250] write(3, "1000", 4) = 4 [pid 5250] close(3) = 0 [pid 5250] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5250] memfd_create("syzkaller", 0) = 3 [pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5250] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5250] munmap(0x7f1853800000, 138412032) = 0 [pid 5250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5250] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5250] close(3) = 0 [pid 5250] close(4) = 0 [pid 5250] mkdir("./bus", 0777) = 0 [ 128.639225][ T5250] loop0: detected capacity change from 0 to 512 [pid 5250] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5250] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5250] chdir("./bus") = 0 [pid 5250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5250] mkdir("./bus", 0777) = 0 [pid 5250] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5250] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5250] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5250] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5250] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5250] dup3(5, 4, 0) = 4 [ 128.685775][ T5250] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/52/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5250] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5250] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5250] exit_group(0) = ? [pid 5250] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5250, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./52", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./52/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./52/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./52/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/bus") = 0 umount2("./52/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./52") = 0 mkdir("./53", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5253 attached , child_tidptr=0x55556e51b750) = 5253 [pid 5253] set_robust_list(0x55556e51b760, 24) = 0 [pid 5253] chdir("./53") = 0 [pid 5253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5253] setpgid(0, 0) = 0 [pid 5253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5253] write(3, "1000", 4) = 4 [pid 5253] close(3) = 0 [pid 5253] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5253] memfd_create("syzkaller", 0) = 3 [pid 5253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5253] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5253] munmap(0x7f1853800000, 138412032) = 0 [pid 5253] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5253] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5253] close(3) = 0 [pid 5253] close(4) = 0 [pid 5253] mkdir("./bus", 0777) = 0 [ 129.006872][ T5253] loop0: detected capacity change from 0 to 512 [pid 5253] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5253] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5253] chdir("./bus") = 0 [pid 5253] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5253] mkdir("./bus", 0777) = 0 [pid 5253] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 129.061200][ T5253] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/53/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5253] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5253] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5253] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5253] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5253] dup3(5, 4, 0) = 4 [pid 5253] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5253] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5253] exit_group(0) = ? [pid 5253] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5253, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./53", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./53/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./53/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./53/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/bus") = 0 umount2("./53/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./53") = 0 mkdir("./54", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5256 attached , child_tidptr=0x55556e51b750) = 5256 [pid 5256] set_robust_list(0x55556e51b760, 24) = 0 [pid 5256] chdir("./54") = 0 [pid 5256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5256] setpgid(0, 0) = 0 [pid 5256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5256] write(3, "1000", 4) = 4 [pid 5256] close(3) = 0 [pid 5256] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5256] memfd_create("syzkaller", 0) = 3 [pid 5256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5256] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5256] munmap(0x7f1853800000, 138412032) = 0 [pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5256] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5256] close(3) = 0 [pid 5256] close(4) = 0 [pid 5256] mkdir("./bus", 0777) = 0 [ 129.387213][ T5256] loop0: detected capacity change from 0 to 512 [pid 5256] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5256] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5256] chdir("./bus") = 0 [pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5256] mkdir("./bus", 0777) = 0 [pid 5256] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5256] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 129.454136][ T5256] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/54/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5256] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5256] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5256] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5256] dup3(5, 4, 0) = 4 [pid 5256] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5256] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5256] exit_group(0) = ? [pid 5256] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5256, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./54", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./54/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./54/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./54/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/bus") = 0 umount2("./54/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./54") = 0 mkdir("./55", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5259 attached , child_tidptr=0x55556e51b750) = 5259 [pid 5259] set_robust_list(0x55556e51b760, 24) = 0 [pid 5259] chdir("./55") = 0 [pid 5259] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5259] setpgid(0, 0) = 0 [pid 5259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5259] write(3, "1000", 4) = 4 [pid 5259] close(3) = 0 [pid 5259] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5259] memfd_create("syzkaller", 0) = 3 [pid 5259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5259] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5259] munmap(0x7f1853800000, 138412032) = 0 [pid 5259] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5259] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5259] close(3) = 0 [pid 5259] close(4) = 0 [pid 5259] mkdir("./bus", 0777) = 0 [ 129.793939][ T5259] loop0: detected capacity change from 0 to 512 [pid 5259] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5259] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5259] chdir("./bus") = 0 [pid 5259] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5259] mkdir("./bus", 0777) = 0 [pid 5259] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5259] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5259] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5259] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5259] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [ 129.846721][ T5259] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/55/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5259] dup3(5, 4, 0) = 4 [pid 5259] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5259] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5259] exit_group(0) = ? [pid 5259] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5259, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./55", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./55/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./55/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./55/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/bus") = 0 umount2("./55/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./55/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./55") = 0 mkdir("./56", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5262 attached , child_tidptr=0x55556e51b750) = 5262 [pid 5262] set_robust_list(0x55556e51b760, 24) = 0 [pid 5262] chdir("./56") = 0 [pid 5262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5262] setpgid(0, 0) = 0 [pid 5262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5262] write(3, "1000", 4) = 4 [pid 5262] close(3) = 0 [pid 5262] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5262] memfd_create("syzkaller", 0) = 3 [pid 5262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5262] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5262] munmap(0x7f1853800000, 138412032) = 0 [pid 5262] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5262] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5262] close(3) = 0 [pid 5262] close(4) = 0 [pid 5262] mkdir("./bus", 0777) = 0 [ 130.218913][ T5262] loop0: detected capacity change from 0 to 512 [pid 5262] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5262] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5262] chdir("./bus") = 0 [pid 5262] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5262] mkdir("./bus", 0777) = 0 [pid 5262] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5262] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 130.284197][ T5262] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/56/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5262] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5262] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5262] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5262] dup3(5, 4, 0) = 4 [pid 5262] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5262] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5262] exit_group(0) = ? [pid 5262] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5262, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./56", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./56/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./56/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./56/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/bus") = 0 umount2("./56/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./56/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./56") = 0 mkdir("./57", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5265 attached , child_tidptr=0x55556e51b750) = 5265 [pid 5265] set_robust_list(0x55556e51b760, 24) = 0 [pid 5265] chdir("./57") = 0 [pid 5265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5265] setpgid(0, 0) = 0 [pid 5265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5265] write(3, "1000", 4) = 4 [pid 5265] close(3) = 0 [pid 5265] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5265] memfd_create("syzkaller", 0) = 3 [pid 5265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5265] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5265] munmap(0x7f1853800000, 138412032) = 0 [pid 5265] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5265] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5265] close(3) = 0 [pid 5265] close(4) = 0 [pid 5265] mkdir("./bus", 0777) = 0 [ 130.641282][ T5265] loop0: detected capacity change from 0 to 512 [pid 5265] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5265] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5265] chdir("./bus") = 0 [pid 5265] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5265] mkdir("./bus", 0777) = 0 [pid 5265] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5265] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5265] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 130.704753][ T5265] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/57/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5265] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5265] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5265] dup3(5, 4, 0) = 4 [pid 5265] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5265] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5265] exit_group(0) = ? [pid 5265] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5265, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./57", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./57/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./57/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./57/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/bus") = 0 umount2("./57/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./57/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./57") = 0 mkdir("./58", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5268 attached , child_tidptr=0x55556e51b750) = 5268 [pid 5268] set_robust_list(0x55556e51b760, 24) = 0 [pid 5268] chdir("./58") = 0 [pid 5268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5268] setpgid(0, 0) = 0 [pid 5268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5268] write(3, "1000", 4) = 4 [pid 5268] close(3) = 0 [pid 5268] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5268] memfd_create("syzkaller", 0) = 3 [pid 5268] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5268] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5268] munmap(0x7f1853800000, 138412032) = 0 [pid 5268] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5268] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5268] close(3) = 0 [pid 5268] close(4) = 0 [pid 5268] mkdir("./bus", 0777) = 0 [ 131.070165][ T5268] loop0: detected capacity change from 0 to 512 [pid 5268] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5268] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5268] chdir("./bus") = 0 [pid 5268] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5268] mkdir("./bus", 0777) = 0 [pid 5268] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5268] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5268] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 131.117238][ T5268] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/58/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5268] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5268] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5268] dup3(5, 4, 0) = 4 [pid 5268] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5268] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5268] exit_group(0) = ? [pid 5268] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5268, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./58", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./58/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./58/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./58/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/bus") = 0 umount2("./58/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./58/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./58") = 0 mkdir("./59", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5271 attached , child_tidptr=0x55556e51b750) = 5271 [pid 5271] set_robust_list(0x55556e51b760, 24) = 0 [pid 5271] chdir("./59") = 0 [pid 5271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5271] setpgid(0, 0) = 0 [pid 5271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5271] write(3, "1000", 4) = 4 [pid 5271] close(3) = 0 [pid 5271] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5271] memfd_create("syzkaller", 0) = 3 [pid 5271] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5271] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5271] munmap(0x7f1853800000, 138412032) = 0 [pid 5271] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5271] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5271] close(3) = 0 [pid 5271] close(4) = 0 [pid 5271] mkdir("./bus", 0777) = 0 [ 131.467882][ T5271] loop0: detected capacity change from 0 to 512 [pid 5271] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5271] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5271] chdir("./bus") = 0 [pid 5271] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5271] mkdir("./bus", 0777) = 0 [pid 5271] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 131.506317][ T5271] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/59/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5271] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5271] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5271] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5271] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5271] dup3(5, 4, 0) = 4 [pid 5271] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5271] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5271] exit_group(0) = ? [pid 5271] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5271, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./59", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./59/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./59/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./59/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/bus") = 0 umount2("./59/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./59/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./59") = 0 mkdir("./60", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5274 attached , child_tidptr=0x55556e51b750) = 5274 [pid 5274] set_robust_list(0x55556e51b760, 24) = 0 [pid 5274] chdir("./60") = 0 [pid 5274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5274] setpgid(0, 0) = 0 [pid 5274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5274] write(3, "1000", 4) = 4 [pid 5274] close(3) = 0 [pid 5274] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5274] memfd_create("syzkaller", 0) = 3 [pid 5274] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5274] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5274] munmap(0x7f1853800000, 138412032) = 0 [pid 5274] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5274] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5274] close(3) = 0 [pid 5274] close(4) = 0 [pid 5274] mkdir("./bus", 0777) = 0 [ 131.855870][ T5274] loop0: detected capacity change from 0 to 512 [pid 5274] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5274] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5274] chdir("./bus") = 0 [pid 5274] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5274] mkdir("./bus", 0777) = 0 [pid 5274] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5274] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 131.898564][ T5274] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/60/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5274] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5274] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5274] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5274] dup3(5, 4, 0) = 4 [pid 5274] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5274] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5274] exit_group(0) = ? [pid 5274] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5274, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./60", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./60/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./60/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./60/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/bus") = 0 umount2("./60/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./60/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./60") = 0 mkdir("./61", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5277 attached , child_tidptr=0x55556e51b750) = 5277 [pid 5277] set_robust_list(0x55556e51b760, 24) = 0 [pid 5277] chdir("./61") = 0 [pid 5277] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5277] setpgid(0, 0) = 0 [pid 5277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5277] write(3, "1000", 4) = 4 [pid 5277] close(3) = 0 [pid 5277] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5277] memfd_create("syzkaller", 0) = 3 [pid 5277] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5277] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5277] munmap(0x7f1853800000, 138412032) = 0 [pid 5277] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5277] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5277] close(3) = 0 [pid 5277] close(4) = 0 [pid 5277] mkdir("./bus", 0777) = 0 [ 132.281308][ T5277] loop0: detected capacity change from 0 to 512 [pid 5277] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5277] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5277] chdir("./bus") = 0 [pid 5277] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5277] mkdir("./bus", 0777) = 0 [pid 5277] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5277] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 132.334372][ T5277] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/61/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5277] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5277] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5277] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5277] dup3(5, 4, 0) = 4 [pid 5277] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5277] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5277] exit_group(0) = ? [pid 5277] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5277, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./61", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./61/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./61/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./61/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/bus") = 0 umount2("./61/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./61/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./61") = 0 mkdir("./62", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5280 attached , child_tidptr=0x55556e51b750) = 5280 [pid 5280] set_robust_list(0x55556e51b760, 24) = 0 [pid 5280] chdir("./62") = 0 [pid 5280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5280] setpgid(0, 0) = 0 [pid 5280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5280] write(3, "1000", 4) = 4 [pid 5280] close(3) = 0 [pid 5280] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5280] memfd_create("syzkaller", 0) = 3 [pid 5280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5280] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5280] munmap(0x7f1853800000, 138412032) = 0 [pid 5280] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5280] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5280] close(3) = 0 [pid 5280] close(4) = 0 [pid 5280] mkdir("./bus", 0777) = 0 [ 132.663829][ T5280] loop0: detected capacity change from 0 to 512 [pid 5280] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5280] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5280] chdir("./bus") = 0 [pid 5280] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5280] mkdir("./bus", 0777) = 0 [pid 5280] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5280] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 132.715121][ T5280] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/62/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5280] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5280] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5280] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5280] dup3(5, 4, 0) = 4 [pid 5280] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5280] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5280] exit_group(0) = ? [pid 5280] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5280, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./62", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./62/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./62/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./62/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/bus") = 0 umount2("./62/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./62/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./62") = 0 mkdir("./63", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5283 attached , child_tidptr=0x55556e51b750) = 5283 [pid 5283] set_robust_list(0x55556e51b760, 24) = 0 [pid 5283] chdir("./63") = 0 [pid 5283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5283] setpgid(0, 0) = 0 [pid 5283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5283] write(3, "1000", 4) = 4 [pid 5283] close(3) = 0 [pid 5283] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5283] memfd_create("syzkaller", 0) = 3 [pid 5283] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5283] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5283] munmap(0x7f1853800000, 138412032) = 0 [pid 5283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5283] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5283] close(3) = 0 [pid 5283] close(4) = 0 [pid 5283] mkdir("./bus", 0777) = 0 [pid 5283] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5283] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5283] chdir("./bus") = 0 [pid 5283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 133.045233][ T5283] loop0: detected capacity change from 0 to 512 [ 133.076701][ T5283] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/63/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5283] mkdir("./bus", 0777) = 0 [pid 5283] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5283] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5283] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5283] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5283] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5283] dup3(5, 4, 0) = 4 [pid 5283] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5283] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5283] exit_group(0) = ? [pid 5283] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5283, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./63", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./63/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./63/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./63/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/bus") = 0 umount2("./63/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./63/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./63") = 0 mkdir("./64", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5286 attached , child_tidptr=0x55556e51b750) = 5286 [pid 5286] set_robust_list(0x55556e51b760, 24) = 0 [pid 5286] chdir("./64") = 0 [pid 5286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5286] setpgid(0, 0) = 0 [pid 5286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5286] write(3, "1000", 4) = 4 [pid 5286] close(3) = 0 [pid 5286] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5286] memfd_create("syzkaller", 0) = 3 [pid 5286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5286] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5286] munmap(0x7f1853800000, 138412032) = 0 [pid 5286] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5286] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5286] close(3) = 0 [pid 5286] close(4) = 0 [pid 5286] mkdir("./bus", 0777) = 0 [ 133.469714][ T5286] loop0: detected capacity change from 0 to 512 [pid 5286] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5286] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5286] chdir("./bus") = 0 [pid 5286] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5286] mkdir("./bus", 0777) = 0 [pid 5286] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5286] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 133.524815][ T5286] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/64/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5286] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5286] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5286] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5286] dup3(5, 4, 0) = 4 [pid 5286] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5286] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5286] exit_group(0) = ? [pid 5286] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5286, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./64", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./64/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./64/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./64/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/bus") = 0 umount2("./64/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./64/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./64") = 0 mkdir("./65", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5289 attached , child_tidptr=0x55556e51b750) = 5289 [pid 5289] set_robust_list(0x55556e51b760, 24) = 0 [pid 5289] chdir("./65") = 0 [pid 5289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5289] setpgid(0, 0) = 0 [pid 5289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5289] write(3, "1000", 4) = 4 [pid 5289] close(3) = 0 [pid 5289] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5289] memfd_create("syzkaller", 0) = 3 [pid 5289] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5289] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5289] munmap(0x7f1853800000, 138412032) = 0 [pid 5289] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5289] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5289] close(3) = 0 [pid 5289] close(4) = 0 [pid 5289] mkdir("./bus", 0777) = 0 [ 133.899015][ T5289] loop0: detected capacity change from 0 to 512 [pid 5289] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5289] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5289] chdir("./bus") = 0 [pid 5289] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5289] mkdir("./bus", 0777) = 0 [pid 5289] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5289] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 133.939096][ T5289] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/65/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5289] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5289] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5289] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5289] dup3(5, 4, 0) = 4 [pid 5289] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5289] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5289] exit_group(0) = ? [pid 5289] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5289, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./65", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./65/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./65/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./65/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/bus") = 0 umount2("./65/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./65/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./65") = 0 mkdir("./66", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5293 attached , child_tidptr=0x55556e51b750) = 5293 [pid 5293] set_robust_list(0x55556e51b760, 24) = 0 [pid 5293] chdir("./66") = 0 [pid 5293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5293] setpgid(0, 0) = 0 [pid 5293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5293] write(3, "1000", 4) = 4 [pid 5293] close(3) = 0 [pid 5293] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5293] memfd_create("syzkaller", 0) = 3 [pid 5293] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5293] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5293] munmap(0x7f1853800000, 138412032) = 0 [pid 5293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5293] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5293] close(3) = 0 [pid 5293] close(4) = 0 [pid 5293] mkdir("./bus", 0777) = 0 [pid 5293] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5293] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5293] chdir("./bus") = 0 [pid 5293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5293] mkdir("./bus", 0777) = 0 [pid 5293] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5293] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 134.240666][ T5293] loop0: detected capacity change from 0 to 512 [ 134.278753][ T5293] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/66/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5293] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5293] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5293] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5293] dup3(5, 4, 0) = 4 [pid 5293] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5293] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5293] exit_group(0) = ? [pid 5293] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5293, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./66", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./66/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./66/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./66/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/bus") = 0 umount2("./66/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./66/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./66") = 0 mkdir("./67", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5296 attached , child_tidptr=0x55556e51b750) = 5296 [pid 5296] set_robust_list(0x55556e51b760, 24) = 0 [pid 5296] chdir("./67") = 0 [pid 5296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5296] setpgid(0, 0) = 0 [pid 5296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5296] write(3, "1000", 4) = 4 [pid 5296] close(3) = 0 [pid 5296] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5296] memfd_create("syzkaller", 0) = 3 [pid 5296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5296] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5296] munmap(0x7f1853800000, 138412032) = 0 [pid 5296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5296] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5296] close(3) = 0 [pid 5296] close(4) = 0 [pid 5296] mkdir("./bus", 0777) = 0 [ 134.560209][ T5296] loop0: detected capacity change from 0 to 512 [pid 5296] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5296] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5296] chdir("./bus") = 0 [pid 5296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5296] mkdir("./bus", 0777) = 0 [pid 5296] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5296] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5296] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5296] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5296] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5296] dup3(5, 4, 0) = 4 [ 134.607245][ T5296] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/67/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5296] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5296] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5296] exit_group(0) = ? [pid 5296] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5296, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./67", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./67/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./67/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./67/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/bus") = 0 umount2("./67/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./67/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./67") = 0 mkdir("./68", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5299 attached , child_tidptr=0x55556e51b750) = 5299 [pid 5299] set_robust_list(0x55556e51b760, 24) = 0 [pid 5299] chdir("./68") = 0 [pid 5299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5299] setpgid(0, 0) = 0 [pid 5299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5299] write(3, "1000", 4) = 4 [pid 5299] close(3) = 0 [pid 5299] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5299] memfd_create("syzkaller", 0) = 3 [pid 5299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5299] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5299] munmap(0x7f1853800000, 138412032) = 0 [pid 5299] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5299] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5299] close(3) = 0 [pid 5299] close(4) = 0 [pid 5299] mkdir("./bus", 0777) = 0 [ 134.946777][ T5299] loop0: detected capacity change from 0 to 512 [pid 5299] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5299] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5299] chdir("./bus") = 0 [pid 5299] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5299] mkdir("./bus", 0777) = 0 [pid 5299] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5299] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5299] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5299] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5299] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5299] dup3(5, 4, 0) = 4 [pid 5299] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [ 134.998240][ T5299] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/68/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5299] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5299] exit_group(0) = ? [pid 5299] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5299, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./68", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./68/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./68/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./68/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/bus") = 0 umount2("./68/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./68/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./68") = 0 mkdir("./69", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5302 attached , child_tidptr=0x55556e51b750) = 5302 [pid 5302] set_robust_list(0x55556e51b760, 24) = 0 [pid 5302] chdir("./69") = 0 [pid 5302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5302] setpgid(0, 0) = 0 [pid 5302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5302] write(3, "1000", 4) = 4 [pid 5302] close(3) = 0 [pid 5302] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5302] memfd_create("syzkaller", 0) = 3 [pid 5302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5302] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5302] munmap(0x7f1853800000, 138412032) = 0 [pid 5302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5302] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5302] close(3) = 0 [pid 5302] close(4) = 0 [pid 5302] mkdir("./bus", 0777) = 0 [ 135.287558][ T5302] loop0: detected capacity change from 0 to 512 [pid 5302] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5302] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5302] chdir("./bus") = 0 [pid 5302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5302] mkdir("./bus", 0777) = 0 [pid 5302] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5302] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 135.335934][ T5302] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/69/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5302] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5302] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5302] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5302] dup3(5, 4, 0) = 4 [pid 5302] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5302] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5302] exit_group(0) = ? [pid 5302] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5302, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./69", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./69/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./69/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./69/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/bus") = 0 umount2("./69/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./69/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./69") = 0 mkdir("./70", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5305 attached , child_tidptr=0x55556e51b750) = 5305 [pid 5305] set_robust_list(0x55556e51b760, 24) = 0 [pid 5305] chdir("./70") = 0 [pid 5305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5305] setpgid(0, 0) = 0 [pid 5305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5305] write(3, "1000", 4) = 4 [pid 5305] close(3) = 0 [pid 5305] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5305] memfd_create("syzkaller", 0) = 3 [pid 5305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5305] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5305] munmap(0x7f1853800000, 138412032) = 0 [pid 5305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5305] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5305] close(3) = 0 [pid 5305] close(4) = 0 [pid 5305] mkdir("./bus", 0777) = 0 [ 135.694867][ T5305] loop0: detected capacity change from 0 to 512 [pid 5305] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5305] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5305] chdir("./bus") = 0 [pid 5305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5305] mkdir("./bus", 0777) = 0 [pid 5305] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5305] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 135.754396][ T5305] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/70/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5305] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5305] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5305] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5305] dup3(5, 4, 0) = 4 [pid 5305] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5305] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5305] exit_group(0) = ? [pid 5305] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5305, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./70", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./70/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./70/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./70/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/bus") = 0 umount2("./70/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./70/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./70") = 0 mkdir("./71", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5308 attached , child_tidptr=0x55556e51b750) = 5308 [pid 5308] set_robust_list(0x55556e51b760, 24) = 0 [pid 5308] chdir("./71") = 0 [pid 5308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5308] setpgid(0, 0) = 0 [pid 5308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5308] write(3, "1000", 4) = 4 [pid 5308] close(3) = 0 [pid 5308] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5308] memfd_create("syzkaller", 0) = 3 [pid 5308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5308] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5308] munmap(0x7f1853800000, 138412032) = 0 [pid 5308] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5308] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5308] close(3) = 0 [pid 5308] close(4) = 0 [pid 5308] mkdir("./bus", 0777) = 0 [ 136.115909][ T5308] loop0: detected capacity change from 0 to 512 [pid 5308] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5308] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5308] chdir("./bus") = 0 [pid 5308] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5308] mkdir("./bus", 0777) = 0 [pid 5308] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5308] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 136.165145][ T5308] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/71/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5308] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5308] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5308] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5308] dup3(5, 4, 0) = 4 [pid 5308] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5308] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5308] exit_group(0) = ? [pid 5308] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5308, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./71", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./71/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./71/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./71/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/bus") = 0 umount2("./71/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./71/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./71") = 0 mkdir("./72", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5311 attached , child_tidptr=0x55556e51b750) = 5311 [pid 5311] set_robust_list(0x55556e51b760, 24) = 0 [pid 5311] chdir("./72") = 0 [pid 5311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5311] setpgid(0, 0) = 0 [pid 5311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5311] write(3, "1000", 4) = 4 [pid 5311] close(3) = 0 [pid 5311] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5311] memfd_create("syzkaller", 0) = 3 [pid 5311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5311] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5311] munmap(0x7f1853800000, 138412032) = 0 [pid 5311] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5311] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5311] close(3) = 0 [pid 5311] close(4) = 0 [pid 5311] mkdir("./bus", 0777) = 0 [ 136.546807][ T5311] loop0: detected capacity change from 0 to 512 [pid 5311] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5311] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5311] chdir("./bus") = 0 [pid 5311] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5311] mkdir("./bus", 0777) = 0 [pid 5311] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5311] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5311] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5311] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5311] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5311] dup3(5, 4, 0) = 4 [pid 5311] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5311] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5311] exit_group(0) = ? [pid 5311] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5311, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./72", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 136.614906][ T5311] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/72/bus supports timestamps until 2038-01-19 (0x7fffffff) openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./72/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./72/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./72/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./72/bus") = 0 umount2("./72/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./72/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./72") = 0 mkdir("./73", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5314 attached , child_tidptr=0x55556e51b750) = 5314 [pid 5314] set_robust_list(0x55556e51b760, 24) = 0 [pid 5314] chdir("./73") = 0 [pid 5314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5314] setpgid(0, 0) = 0 [pid 5314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5314] write(3, "1000", 4) = 4 [pid 5314] close(3) = 0 [pid 5314] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5314] memfd_create("syzkaller", 0) = 3 [pid 5314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5314] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5314] munmap(0x7f1853800000, 138412032) = 0 [pid 5314] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5314] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5314] close(3) = 0 [pid 5314] close(4) = 0 [pid 5314] mkdir("./bus", 0777) = 0 [ 136.881379][ T5314] loop0: detected capacity change from 0 to 512 [pid 5314] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5314] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5314] chdir("./bus") = 0 [pid 5314] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5314] mkdir("./bus", 0777) = 0 [pid 5314] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5314] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5314] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 136.955629][ T5314] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/73/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5314] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5314] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5314] dup3(5, 4, 0) = 4 [pid 5314] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5314] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5314] exit_group(0) = ? [pid 5314] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5314, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./73", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./73/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./73/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./73/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/bus") = 0 umount2("./73/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./73/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./73") = 0 mkdir("./74", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5318 attached , child_tidptr=0x55556e51b750) = 5318 [pid 5318] set_robust_list(0x55556e51b760, 24) = 0 [pid 5318] chdir("./74") = 0 [pid 5318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5318] setpgid(0, 0) = 0 [pid 5318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5318] write(3, "1000", 4) = 4 [pid 5318] close(3) = 0 [pid 5318] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5318] memfd_create("syzkaller", 0) = 3 [pid 5318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5318] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5318] munmap(0x7f1853800000, 138412032) = 0 [pid 5318] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5318] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5318] close(3) = 0 [pid 5318] close(4) = 0 [pid 5318] mkdir("./bus", 0777) = 0 [ 137.354213][ T5318] loop0: detected capacity change from 0 to 512 [pid 5318] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5318] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5318] chdir("./bus") = 0 [pid 5318] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5318] mkdir("./bus", 0777) = 0 [pid 5318] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5318] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5318] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5318] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 137.406885][ T5318] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/74/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5318] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5318] dup3(5, 4, 0) = 4 [pid 5318] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5318] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5318] exit_group(0) = ? [pid 5318] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5318, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./74", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./74/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./74/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./74/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/bus") = 0 umount2("./74/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./74/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./74") = 0 mkdir("./75", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5321 attached , child_tidptr=0x55556e51b750) = 5321 [pid 5321] set_robust_list(0x55556e51b760, 24) = 0 [pid 5321] chdir("./75") = 0 [pid 5321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5321] setpgid(0, 0) = 0 [pid 5321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5321] write(3, "1000", 4) = 4 [pid 5321] close(3) = 0 [pid 5321] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5321] memfd_create("syzkaller", 0) = 3 [pid 5321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5321] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5321] munmap(0x7f1853800000, 138412032) = 0 [pid 5321] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5321] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5321] close(3) = 0 [pid 5321] close(4) = 0 [pid 5321] mkdir("./bus", 0777) = 0 [ 137.745993][ T5321] loop0: detected capacity change from 0 to 512 [pid 5321] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5321] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5321] chdir("./bus") = 0 [pid 5321] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5321] mkdir("./bus", 0777) = 0 [pid 5321] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5321] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5321] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 137.805153][ T5321] EXT4-fs mount: 86 callbacks suppressed [ 137.805174][ T5321] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 137.824359][ T5321] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/75/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5321] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5321] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5321] dup3(5, 4, 0) = 4 [pid 5321] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5321] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5321] exit_group(0) = ? [pid 5321] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5321, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./75", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./75/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./75/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./75/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 137.927606][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/bus") = 0 umount2("./75/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./75/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./75") = 0 mkdir("./76", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5324 attached , child_tidptr=0x55556e51b750) = 5324 [pid 5324] set_robust_list(0x55556e51b760, 24) = 0 [pid 5324] chdir("./76") = 0 [pid 5324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5324] setpgid(0, 0) = 0 [pid 5324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5324] write(3, "1000", 4) = 4 [pid 5324] close(3) = 0 [pid 5324] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5324] memfd_create("syzkaller", 0) = 3 [pid 5324] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5324] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5324] munmap(0x7f1853800000, 138412032) = 0 [pid 5324] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5324] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5324] close(3) = 0 [pid 5324] close(4) = 0 [pid 5324] mkdir("./bus", 0777) = 0 [ 138.187228][ T5324] loop0: detected capacity change from 0 to 512 [pid 5324] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5324] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5324] chdir("./bus") = 0 [pid 5324] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5324] mkdir("./bus", 0777) = 0 [pid 5324] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5324] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 138.244627][ T5324] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 138.257624][ T5324] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/76/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5324] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5324] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5324] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5324] dup3(5, 4, 0) = 4 [pid 5324] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5324] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5324] exit_group(0) = ? [pid 5324] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5324, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./76", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./76/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./76/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./76/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./76/bus") = 0 umount2("./76/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./76/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 138.400013][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./76") = 0 mkdir("./77", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5329 attached , child_tidptr=0x55556e51b750) = 5329 [pid 5329] set_robust_list(0x55556e51b760, 24) = 0 [pid 5329] chdir("./77") = 0 [pid 5329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5329] setpgid(0, 0) = 0 [pid 5329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5329] write(3, "1000", 4) = 4 [pid 5329] close(3) = 0 [pid 5329] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5329] memfd_create("syzkaller", 0) = 3 [pid 5329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5329] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5329] munmap(0x7f1853800000, 138412032) = 0 [pid 5329] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5329] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5329] close(3) = 0 [pid 5329] close(4) = 0 [pid 5329] mkdir("./bus", 0777) = 0 [ 138.589432][ T5329] loop0: detected capacity change from 0 to 512 [pid 5329] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5329] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5329] chdir("./bus") = 0 [pid 5329] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 138.635640][ T5329] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 138.648333][ T5329] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/77/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5329] mkdir("./bus", 0777) = 0 [pid 5329] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5329] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5329] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5329] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5329] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5329] dup3(5, 4, 0) = 4 [pid 5329] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5329] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5329] exit_group(0) = ? [pid 5329] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5329, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./77", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556e51c7f0 /* 4 entries */, 32768) = 104 umount2("./77/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./77/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./77/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556e524830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55556e524830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/bus") = 0 umount2("./77/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./77/binderfs") = 0 getdents64(3, 0x55556e51c7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./77") = 0 mkdir("./78", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 138.787970][ T5088] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5333 attached , child_tidptr=0x55556e51b750) = 5333 [pid 5333] set_robust_list(0x55556e51b760, 24) = 0 [pid 5333] chdir("./78") = 0 [pid 5333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5333] setpgid(0, 0) = 0 [pid 5333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5333] write(3, "1000", 4) = 4 [pid 5333] close(3) = 0 [pid 5333] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5333] memfd_create("syzkaller", 0) = 3 [pid 5333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1853800000 [pid 5333] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5333] munmap(0x7f1853800000, 138412032) = 0 [pid 5333] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5333] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5333] close(3) = 0 [pid 5333] close(4) = 0 [pid 5333] mkdir("./bus", 0777) = 0 [ 138.971411][ T5333] loop0: detected capacity change from 0 to 512 [pid 5333] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5333] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5333] chdir("./bus") = 0 [pid 5333] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5333] mkdir("./bus", 0777) = 0 [pid 5333] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5333] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 139.026284][ T5333] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 139.039222][ T5333] ext4 filesystem being mounted at /root/syzkaller.8NRdy4/78/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5333] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5333] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5333] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5333] dup3(5, 4, 0) = 4 [pid 5333] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [ 139.108765][ T5333] ------------[ cut here ]------------ [ 139.114269][ T5333] Looking for class "&ei->i_data_sem" with key __key.0, but found a different class "&ei->i_data_sem" with the same key [ 139.126992][ T5333] WARNING: CPU: 0 PID: 5333 at kernel/locking/lockdep.c:932 look_up_lock_class+0x133/0x140 [ 139.137033][ T5333] Modules linked in: [ 139.140935][ T5333] CPU: 0 PID: 5333 Comm: syz-executor112 Not tainted 6.9.0-rc5-syzkaller-00355-g2c8159388952 #0 [ 139.151364][ T5333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 139.161430][ T5333] RIP: 0010:look_up_lock_class+0x133/0x140 [ 139.167280][ T5333] Code: c7 c7 20 be 2c 8b e8 bc 08 75 f6 90 0f 0b 90 90 90 31 db eb be c6 05 d1 4b cd 04 01 90 48 c7 c7 40 c1 2c 8b e8 9e 08 75 f6 90 <0f> 0b 90 90 e9 62 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 [ 139.186952][ T5333] RSP: 0018:ffffc90003ebf638 EFLAGS: 00010086 [ 139.193040][ T5333] RAX: 0000000000000000 RBX: ffffffff94049ac8 RCX: ffffffff815174a9 [ 139.201026][ T5333] RDX: ffff888027f43c00 RSI: ffffffff815174b6 RDI: 0000000000000001 [ 139.209014][ T5333] RBP: ffffffff949a36a1 R08: 0000000000000001 R09: 0000000000000000 [ 139.216999][ T5333] R10: 0000000000000000 R11: 20676e696b6f6f4c R12: ffff88807735b488 [ 139.224982][ T5333] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff948d7aa0 [ 139.232987][ T5333] FS: 000055556e51b480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 139.241970][ T5333] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 139.248572][ T5333] CR2: 00007f185bdb2120 CR3: 000000001829e000 CR4: 0000000000350ef0 [ 139.256557][ T5333] Call Trace: [ 139.259846][ T5333] [ 139.262783][ T5333] ? show_regs+0x8c/0xa0 [ 139.267044][ T5333] ? __warn+0xe5/0x3c0 [ 139.271155][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.276817][ T5333] ? look_up_lock_class+0x133/0x140 [ 139.282079][ T5333] ? report_bug+0x3c0/0x580 [ 139.286628][ T5333] ? handle_bug+0x3d/0x70 [ 139.290998][ T5333] ? exc_invalid_op+0x17/0x50 [ 139.295954][ T5333] ? asm_exc_invalid_op+0x1a/0x20 [ 139.301113][ T5333] ? __warn_printk+0x199/0x350 [ 139.305905][ T5333] ? __warn_printk+0x1a6/0x350 [ 139.310699][ T5333] ? look_up_lock_class+0x133/0x140 [ 139.315943][ T5333] ? look_up_lock_class+0x132/0x140 [ 139.321216][ T5333] register_lock_class+0xb1/0x1230 [ 139.326356][ T5333] ? find_held_lock+0x2d/0x110 [ 139.331161][ T5333] ? __pfx_register_lock_class+0x10/0x10 [ 139.336824][ T5333] ? __pfx_register_lock_class+0x10/0x10 [ 139.342485][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.348153][ T5333] ? find_held_lock+0x2d/0x110 [ 139.352961][ T5333] __lock_acquire+0x111/0x3b30 [ 139.357758][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.363420][ T5333] ? __pfx___lock_acquire+0x10/0x10 [ 139.368656][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.374319][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.380000][ T5333] ? __down_write_common+0x15e/0x13f0 [ 139.385408][ T5333] lock_acquire+0x1b1/0x560 [ 139.389936][ T5333] ? ext4_move_extents+0x9d8/0x3590 [ 139.395188][ T5333] ? __pfx_lock_acquire+0x10/0x10 [ 139.400326][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.406008][ T5333] ? __pfx___might_resched+0x10/0x10 [ 139.411331][ T5333] ? __pfx___might_resched+0x10/0x10 [ 139.416652][ T5333] ? __pfx___might_resched+0x10/0x10 [ 139.421978][ T5333] down_write_nested+0x3d/0x50 [ 139.426783][ T5333] ? ext4_move_extents+0x9d8/0x3590 [ 139.432020][ T5333] ext4_move_extents+0x9d8/0x3590 [ 139.437092][ T5333] ? __pfx_mark_lock+0x10/0x10 [ 139.441884][ T5333] ? __pfx___lock_acquire+0x10/0x10 [ 139.447111][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.452777][ T5333] ? __pfx_ext4_move_extents+0x10/0x10 [ 139.458272][ T5333] ? __pfx_lock_acquire+0x10/0x10 [ 139.463331][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.468998][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.474663][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.480326][ T5333] __ext4_ioctl+0x3ae4/0x4570 [ 139.485155][ T5333] ? __pfx_tomoyo_path_number_perm+0x10/0x10 [ 139.491168][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.496828][ T5333] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 139.502744][ T5333] ? __pfx___ext4_ioctl+0x10/0x10 [ 139.507808][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.513815][ T5333] ? do_vfs_ioctl+0x515/0x1ad0 [ 139.518618][ T5333] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 139.523690][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.529372][ T5333] ? find_held_lock+0x2d/0x110 [ 139.534175][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.539850][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.545510][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.551180][ T5333] ? __pfx_ext4_ioctl+0x10/0x10 [ 139.556071][ T5333] __x64_sys_ioctl+0x196/0x220 [ 139.560897][ T5333] do_syscall_64+0xcf/0x260 [ 139.565423][ T5333] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 139.571363][ T5333] RIP: 0033:0x7f185bd39b69 [ 139.575790][ T5333] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 139.595421][ T5333] RSP: 002b:00007ffc0cf93988 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 139.603858][ T5333] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f185bd39b69 [ 139.611863][ T5333] RDX: 00000000200000c0 RSI: 00000000c028660f RDI: 0000000000000004 [ 139.620196][ T5333] RBP: 0000000000000000 R08: 00007ffc0cf939bc R09: 00007ffc0cf939bc [ 139.628179][ T5333] R10: 00007ffc0cf939bc R11: 0000000000000246 R12: 00007ffc0cf939bc [ 139.636186][ T5333] R13: 000000000000004e R14: 431bde82d7b634db R15: 00007ffc0cf939f0 [ 139.644277][ T5333] [ 139.647314][ T5333] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 139.654596][ T5333] CPU: 0 PID: 5333 Comm: syz-executor112 Not tainted 6.9.0-rc5-syzkaller-00355-g2c8159388952 #0 [ 139.665026][ T5333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 139.675089][ T5333] Call Trace: [ 139.678377][ T5333] [ 139.681315][ T5333] dump_stack_lvl+0x3d/0x1f0 [ 139.685977][ T5333] panic+0x6f5/0x7a0 [ 139.689919][ T5333] ? __pfx_panic+0x10/0x10 [ 139.694365][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.700027][ T5333] ? show_trace_log_lvl+0x363/0x500 [ 139.705317][ T5333] ? check_panic_on_warn+0x1f/0xb0 [ 139.710518][ T5333] ? look_up_lock_class+0x133/0x140 [ 139.715779][ T5333] check_panic_on_warn+0xab/0xb0 [ 139.720782][ T5333] __warn+0xf1/0x3c0 [ 139.724714][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.730384][ T5333] ? look_up_lock_class+0x133/0x140 [ 139.735637][ T5333] report_bug+0x3c0/0x580 [ 139.740032][ T5333] handle_bug+0x3d/0x70 [ 139.744213][ T5333] exc_invalid_op+0x17/0x50 [ 139.748750][ T5333] asm_exc_invalid_op+0x1a/0x20 [ 139.753628][ T5333] RIP: 0010:look_up_lock_class+0x133/0x140 [ 139.759479][ T5333] Code: c7 c7 20 be 2c 8b e8 bc 08 75 f6 90 0f 0b 90 90 90 31 db eb be c6 05 d1 4b cd 04 01 90 48 c7 c7 40 c1 2c 8b e8 9e 08 75 f6 90 <0f> 0b 90 90 e9 62 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 [ 139.779131][ T5333] RSP: 0018:ffffc90003ebf638 EFLAGS: 00010086 [ 139.785216][ T5333] RAX: 0000000000000000 RBX: ffffffff94049ac8 RCX: ffffffff815174a9 [ 139.793200][ T5333] RDX: ffff888027f43c00 RSI: ffffffff815174b6 RDI: 0000000000000001 [ 139.801185][ T5333] RBP: ffffffff949a36a1 R08: 0000000000000001 R09: 0000000000000000 [ 139.809172][ T5333] R10: 0000000000000000 R11: 20676e696b6f6f4c R12: ffff88807735b488 [ 139.817158][ T5333] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff948d7aa0 [ 139.825150][ T5333] ? __warn_printk+0x199/0x350 [ 139.829946][ T5333] ? __warn_printk+0x1a6/0x350 [ 139.834740][ T5333] ? look_up_lock_class+0x132/0x140 [ 139.839986][ T5333] register_lock_class+0xb1/0x1230 [ 139.845124][ T5333] ? find_held_lock+0x2d/0x110 [ 139.849931][ T5333] ? __pfx_register_lock_class+0x10/0x10 [ 139.855590][ T5333] ? __pfx_register_lock_class+0x10/0x10 [ 139.861248][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.866913][ T5333] ? find_held_lock+0x2d/0x110 [ 139.871726][ T5333] __lock_acquire+0x111/0x3b30 [ 139.876531][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.882192][ T5333] ? __pfx___lock_acquire+0x10/0x10 [ 139.887414][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.893077][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.898736][ T5333] ? __down_write_common+0x15e/0x13f0 [ 139.904142][ T5333] lock_acquire+0x1b1/0x560 [ 139.908670][ T5333] ? ext4_move_extents+0x9d8/0x3590 [ 139.913905][ T5333] ? __pfx_lock_acquire+0x10/0x10 [ 139.918955][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.924736][ T5333] ? __pfx___might_resched+0x10/0x10 [ 139.930080][ T5333] ? __pfx___might_resched+0x10/0x10 [ 139.935398][ T5333] ? __pfx___might_resched+0x10/0x10 [ 139.940720][ T5333] down_write_nested+0x3d/0x50 [ 139.945514][ T5333] ? ext4_move_extents+0x9d8/0x3590 [ 139.950751][ T5333] ext4_move_extents+0x9d8/0x3590 [ 139.955825][ T5333] ? __pfx_mark_lock+0x10/0x10 [ 139.960618][ T5333] ? __pfx___lock_acquire+0x10/0x10 [ 139.965845][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.971507][ T5333] ? __pfx_ext4_move_extents+0x10/0x10 [ 139.976999][ T5333] ? __pfx_lock_acquire+0x10/0x10 [ 139.982049][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.987712][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.993383][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 139.999059][ T5333] __ext4_ioctl+0x3ae4/0x4570 [ 140.003782][ T5333] ? __pfx_tomoyo_path_number_perm+0x10/0x10 [ 140.009794][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 140.015458][ T5333] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 140.021379][ T5333] ? __pfx___ext4_ioctl+0x10/0x10 [ 140.026440][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 140.032098][ T5333] ? do_vfs_ioctl+0x515/0x1ad0 [ 140.036902][ T5333] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 140.041979][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 140.047637][ T5333] ? find_held_lock+0x2d/0x110 [ 140.052442][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 140.058115][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 140.063773][ T5333] ? srso_alias_return_thunk+0x5/0xfbef5 [ 140.069432][ T5333] ? __pfx_ext4_ioctl+0x10/0x10 [ 140.074331][ T5333] __x64_sys_ioctl+0x196/0x220 [ 140.079141][ T5333] do_syscall_64+0xcf/0x260 [ 140.083666][ T5333] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 140.089613][ T5333] RIP: 0033:0x7f185bd39b69 [ 140.094049][ T5333] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 140.113681][ T5333] RSP: 002b:00007ffc0cf93988 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 140.122144][ T5333] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f185bd39b69 [ 140.130131][ T5333] RDX: 00000000200000c0 RSI: 00000000c028660f RDI: 0000000000000004 [ 140.138116][ T5333] RBP: 0000000000000000 R08: 00007ffc0cf939bc R09: 00007ffc0cf939bc [ 140.146121][ T5333] R10: 00007ffc0cf939bc R11: 0000000000000246 R12: 00007ffc0cf939bc [ 140.154125][ T5333] R13: 000000000000004e R14: 431bde82d7b634db R15: 00007ffc0cf939f0 [ 140.162125][ T5333] [ 140.165374][ T5333] Kernel Offset: disabled [ 140.169703][ T5333] Rebooting in 86400 seconds..