./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3776141459 <...> Warning: Permanently added '10.128.0.101' (ED25519) to the list of known hosts. execve("./syz-executor3776141459", ["./syz-executor3776141459"], 0x7ffdfc012df0 /* 10 vars */) = 0 brk(NULL) = 0x55555720b000 brk(0x55555720bd40) = 0x55555720bd40 arch_prctl(ARCH_SET_FS, 0x55555720b3c0) = 0 set_tid_address(0x55555720b690) = 5062 set_robust_list(0x55555720b6a0, 24) = 0 rseq(0x55555720bce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3776141459", 4096) = 28 getrandom("\x3a\xd6\x05\x6a\xb9\x94\xd3\x29", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555720bd40 brk(0x55555722cd40) = 0x55555722cd40 brk(0x55555722d000) = 0x55555722d000 mprotect(0x7f50e625d000, 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 mkdir("./syzkaller.Q6oKgg", 0700) = 0 chmod("./syzkaller.Q6oKgg", 0777) = 0 chdir("./syzkaller.Q6oKgg") = 0 mkdir("./0", 0777) = 0 [ 71.389848][ T27] audit: type=1400 audit(1701154766.606:83): avc: denied { execmem } for pid=5062 comm="syz-executor377" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 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 5063 attached [pid 5063] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5063 [pid 5063] <... set_robust_list resumed>) = 0 [pid 5063] chdir("./0") = 0 [pid 5063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5063] setpgid(0, 0) = 0 [pid 5063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "1000", 4) = 4 [pid 5063] close(3) = 0 [pid 5063] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5063] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5063] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5063] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5063] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [ 71.436355][ T27] audit: type=1400 audit(1701154766.656:84): avc: denied { read write } for pid=5062 comm="syz-executor377" name="loop0" dev="devtmpfs" ino=648 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 71.460751][ T27] audit: type=1400 audit(1701154766.656:85): avc: denied { open } for pid=5062 comm="syz-executor377" path="/dev/loop0" dev="devtmpfs" ino=648 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 5063] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5063] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0} => {parent_tid=[5064]}, 88) = 5064 [pid 5063] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5063] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5064 attached [pid 5064] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5064] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5064] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5064] memfd_create("syzkaller", 0) = 3 [pid 5064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5064] 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"..., 1048576) = 1048576 [ 71.485862][ T27] audit: type=1400 audit(1701154766.656:86): avc: denied { ioctl } for pid=5062 comm="syz-executor377" path="/dev/loop0" dev="devtmpfs" ino=648 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 5064] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5064] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5064] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5064] close(3) = 0 [pid 5064] mkdir("./file0", 0777) = 0 [ 71.554021][ T5064] loop0: detected capacity change from 0 to 2048 [ 71.568087][ T5064] ======================================================= [ 71.568087][ T5064] WARNING: The mand mount option has been deprecated and [ 71.568087][ T5064] and is ignored by this kernel. Remove the mand [ 71.568087][ T5064] option from the mount to silence this warning. [ 71.568087][ T5064] ======================================================= [pid 5064] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [ 71.568116][ T27] audit: type=1400 audit(1701154766.786:87): avc: denied { mounton } for pid=5063 comm="syz-executor377" path="/root/syzkaller.Q6oKgg/0/file0" dev="sda1" ino=1930 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 71.630173][ T5064] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 71.642321][ T5064] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5064] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5064] chdir("./file0") = 0 [pid 5064] ioctl(4, LOOP_CLR_FD) = 0 [pid 5064] close(4) = 0 [pid 5064] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5063] <... futex resumed>) = 0 [pid 5063] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5064] <... futex resumed>) = 1 [pid 5064] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5064] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5063] <... futex resumed>) = 0 [pid 5063] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5064] <... futex resumed>) = 1 [pid 5063] <... futex resumed>) = 0 [pid 5064] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5063] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5064] <... open resumed>) = 5 [pid 5064] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5063] <... futex resumed>) = 0 [pid 5063] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5064] ftruncate(5, 33587199 [pid 5063] <... futex resumed>) = 0 [pid 5063] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5064] <... ftruncate resumed>) = 0 [pid 5064] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5064] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5063] <... futex resumed>) = 0 [pid 5063] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 71.655990][ T27] audit: type=1400 audit(1701154766.876:88): avc: denied { mount } for pid=5063 comm="syz-executor377" name="/" dev="loop0" ino=1376 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:iso9660_t tclass=filesystem permissive=1 [pid 5063] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5064] <... futex resumed>) = 0 [pid 5064] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5063] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5063] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5063] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5064] <... mmap resumed>) = 0x20000000 [pid 5064] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5063] <... mprotect resumed>) = 0 [pid 5064] <... futex resumed>) = 0 [pid 5064] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5063] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5063] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} => {parent_tid=[5066]}, 88) = 5066 ./strace-static-x86_64: Process 5066 attached [pid 5066] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5063] rt_sigprocmask(SIG_SETMASK, [], [pid 5066] <... rseq resumed>) = 0 [pid 5063] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5066] set_robust_list(0x7f50e61579a0, 24 [pid 5063] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5066] <... set_robust_list resumed>) = 0 [pid 5066] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5066] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5066] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5063] <... futex resumed>) = 0 [pid 5066] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5063] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5064] <... futex resumed>) = 0 [pid 5063] <... futex resumed>) = 1 [pid 5064] read(6, [pid 5063] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5063] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5063] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5066] <... futex resumed>) = 0 [pid 5066] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5064] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5066] +++ killed by SIGBUS +++ [pid 5063] <... futex resumed>) = ? [pid 5064] +++ killed by SIGBUS +++ [pid 5063] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5063, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./0", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_DETACH|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 [ 72.113367][ T27] audit: type=1400 audit(1701154767.336:89): avc: denied { unmount } for pid=5062 comm="syz-executor377" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:iso9660_t tclass=filesystem permissive=1 umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 72.144115][ T27] audit: type=1400 audit(1701154767.366:90): avc: denied { append } for pid=4494 comm="syslogd" name="messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 72.166342][ T27] audit: type=1400 audit(1701154767.366:91): avc: denied { open } for pid=4494 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 72.188851][ T27] audit: type=1400 audit(1701154767.366:92): avc: denied { getattr } for pid=4494 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5067 attached , child_tidptr=0x55555720b690) = 5067 [pid 5067] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5067] chdir("./1") = 0 [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] setpgid(0, 0) = 0 [pid 5067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1000", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5067] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5067] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5067] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5067] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5067] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5067] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5067] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5068 attached [pid 5068] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5067] <... clone3 resumed> => {parent_tid=[5068]}, 88) = 5068 [pid 5068] set_robust_list(0x7f50e61789a0, 24 [pid 5067] rt_sigprocmask(SIG_SETMASK, [], [pid 5068] <... set_robust_list resumed>) = 0 [pid 5068] rt_sigprocmask(SIG_SETMASK, [], [pid 5067] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5068] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5067] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5068] memfd_create("syzkaller", 0 [pid 5067] <... futex resumed>) = 0 [pid 5067] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5068] <... memfd_create resumed>) = 3 [pid 5068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5068] 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"..., 1048576) = 1048576 [pid 5068] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5068] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5068] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5068] close(3) = 0 [pid 5068] mkdir("./file0", 0777) = 0 [pid 5068] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5068] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5068] chdir("./file0") = 0 [pid 5068] ioctl(4, LOOP_CLR_FD) = 0 [pid 5068] close(4) = 0 [pid 5068] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5067] <... futex resumed>) = 0 [pid 5068] <... futex resumed>) = 1 [pid 5067] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5068] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5067] <... futex resumed>) = 0 [pid 5067] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5068] <... open resumed>) = 4 [pid 5068] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5067] <... futex resumed>) = 0 [pid 5068] <... futex resumed>) = 1 [pid 5067] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5068] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5067] <... futex resumed>) = 0 [pid 5068] <... open resumed>) = 5 [pid 5067] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 72.464902][ T5068] loop0: detected capacity change from 0 to 2048 [ 72.487544][ T5068] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 72.499759][ T5068] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5068] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5067] <... futex resumed>) = 0 [pid 5068] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5067] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5067] <... futex resumed>) = 0 [pid 5068] ftruncate(5, 33587199 [pid 5067] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5068] <... ftruncate resumed>) = 0 [pid 5068] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5067] <... futex resumed>) = 0 [pid 5068] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5067] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5067] <... futex resumed>) = 0 [pid 5068] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5067] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5067] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5067] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5067] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5067] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5067] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5069 attached [pid 5068] <... mmap resumed>) = 0x20000000 [pid 5069] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5068] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5069] <... rseq resumed>) = 0 [pid 5068] <... futex resumed>) = 0 [pid 5069] set_robust_list(0x7f50e61579a0, 24 [pid 5068] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5069] <... set_robust_list resumed>) = 0 [pid 5069] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5067] <... clone3 resumed> => {parent_tid=[5069]}, 88) = 5069 [pid 5069] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5067] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5067] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5069] <... futex resumed>) = 0 [pid 5067] <... futex resumed>) = 1 [pid 5067] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5069] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5069] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5069] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5067] <... futex resumed>) = 0 [pid 5067] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5068] <... futex resumed>) = 0 [pid 5068] read(6, [pid 5067] <... futex resumed>) = 1 [pid 5067] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5067] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5069] <... futex resumed>) = 0 [pid 5067] <... futex resumed>) = 1 [pid 5067] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5069] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5068] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5067] <... futex resumed>) = ? [pid 5068] +++ killed by SIGBUS +++ [pid 5069] +++ killed by SIGBUS +++ [pid 5067] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5067, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./1", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./1/binderfs", MNT_DETACH|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 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./1") = 0 mkdir("./2", 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, child_tidptr=0x55555720b690) = 5070 ./strace-static-x86_64: Process 5070 attached [pid 5070] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5070] chdir("./2") = 0 [pid 5070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5070] setpgid(0, 0) = 0 [pid 5070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1000", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5070] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5070] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5070] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5070] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5070] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5070] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5071 attached => {parent_tid=[5071]}, 88) = 5071 [pid 5070] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5071] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5070] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5071] set_robust_list(0x7f50e61789a0, 24 [pid 5070] <... futex resumed>) = 0 [pid 5071] <... set_robust_list resumed>) = 0 [pid 5070] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5071] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5071] memfd_create("syzkaller", 0) = 3 [pid 5071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5071] 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"..., 1048576) = 1048576 [pid 5071] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5071] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5071] close(3) = 0 [pid 5071] mkdir("./file0", 0777) = 0 [ 73.261784][ T5071] loop0: detected capacity change from 0 to 2048 [ 73.294460][ T5071] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [pid 5071] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5071] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5071] chdir("./file0") = 0 [pid 5071] ioctl(4, LOOP_CLR_FD) = 0 [pid 5071] close(4) = 0 [ 73.306601][ T5071] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5071] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5070] <... futex resumed>) = 0 [pid 5071] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5070] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5070] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5071] <... open resumed>) = 4 [pid 5071] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5070] <... futex resumed>) = 0 [pid 5071] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5070] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5071] <... open resumed>) = 5 [pid 5070] <... futex resumed>) = 0 [pid 5070] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5071] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5071] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5070] <... futex resumed>) = 0 [pid 5070] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5070] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5071] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5071] ftruncate(5, 33587199) = 0 [pid 5071] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5070] <... futex resumed>) = 0 [pid 5070] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5071] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5070] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5070] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5070] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5071] <... mmap resumed>) = 0x20000000 [pid 5070] <... mprotect resumed>) = 0 [pid 5070] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5071] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5070] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5070] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5072 attached [pid 5072] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5071] <... futex resumed>) = 0 [pid 5070] <... clone3 resumed> => {parent_tid=[5072]}, 88) = 5072 [pid 5071] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5072] <... rseq resumed>) = 0 [pid 5070] rt_sigprocmask(SIG_SETMASK, [], [pid 5072] set_robust_list(0x7f50e61579a0, 24 [pid 5070] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5072] <... set_robust_list resumed>) = 0 [pid 5070] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5072] rt_sigprocmask(SIG_SETMASK, [], [pid 5070] <... futex resumed>) = 0 [pid 5072] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5070] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5072] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5072] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5070] <... futex resumed>) = 0 [pid 5072] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5070] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5071] <... futex resumed>) = 0 [pid 5071] read(6, [pid 5070] <... futex resumed>) = 1 [pid 5070] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5070] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5070] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5070] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5072] <... futex resumed>) = 0 [pid 5072] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5071] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 241536 [pid 5070] <... futex resumed>) = ? [pid 5072] +++ killed by SIGBUS +++ [pid 5071] +++ killed by SIGBUS +++ [pid 5070] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5070, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./2", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./2/binderfs", MNT_DETACH|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 umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5073 attached , child_tidptr=0x55555720b690) = 5073 [pid 5073] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5073] chdir("./3") = 0 [pid 5073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5073] setpgid(0, 0) = 0 [pid 5073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1000", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5073] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5073] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5073] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5073] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5073] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5073] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5073] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5074 attached => {parent_tid=[5074]}, 88) = 5074 [pid 5073] rt_sigprocmask(SIG_SETMASK, [], [pid 5074] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5073] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5074] <... rseq resumed>) = 0 [pid 5074] set_robust_list(0x7f50e61789a0, 24 [pid 5073] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5073] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5074] <... set_robust_list resumed>) = 0 [pid 5074] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5074] memfd_create("syzkaller", 0) = 3 [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5074] 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"..., 1048576) = 1048576 [pid 5074] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5074] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5074] close(3) = 0 [pid 5074] mkdir("./file0", 0777) = 0 [pid 5074] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5074] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5074] chdir("./file0") = 0 [pid 5074] ioctl(4, LOOP_CLR_FD) = 0 [pid 5074] close(4) = 0 [pid 5074] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5074] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5073] <... futex resumed>) = 0 [pid 5073] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5073] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5074] <... futex resumed>) = 0 [pid 5074] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5074] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 74.030332][ T5074] loop0: detected capacity change from 0 to 2048 [ 74.046968][ T5074] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 74.059249][ T5074] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5073] <... futex resumed>) = 0 [pid 5074] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5073] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5074] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5073] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5074] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5074] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5074] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5073] <... futex resumed>) = 0 [pid 5074] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5073] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5074] ftruncate(5, 33587199 [pid 5073] <... futex resumed>) = 0 [pid 5073] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5074] <... ftruncate resumed>) = 0 [pid 5074] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5074] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5073] <... futex resumed>) = 0 [pid 5073] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5074] <... futex resumed>) = 0 [pid 5073] <... futex resumed>) = 1 [pid 5074] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5073] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5074] <... mmap resumed>) = 0x20000000 [pid 5073] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5074] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5073] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5074] <... futex resumed>) = 0 [pid 5073] <... futex resumed>) = 0 [pid 5074] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5073] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5073] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5073] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5073] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} => {parent_tid=[5075]}, 88) = 5075 [pid 5073] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5073] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5073] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5075 attached [pid 5075] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5075] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5075] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5075] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5075] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5073] <... futex resumed>) = 0 [pid 5073] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5074] <... futex resumed>) = 0 [pid 5073] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5075] <... futex resumed>) = 1 [pid 5074] read(6, [pid 5075] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5073] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5073] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5075] <... futex resumed>) = 0 [pid 5073] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5075] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5074] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 241536 [pid 5073] <... futex resumed>) = ? [pid 5074] +++ killed by SIGBUS +++ [pid 5075] +++ killed by SIGBUS +++ [pid 5073] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5073, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./3", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./3/binderfs", MNT_DETACH|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 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555720b690) = 5076 ./strace-static-x86_64: Process 5076 attached [pid 5076] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5076] chdir("./4") = 0 [pid 5076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5076] setpgid(0, 0) = 0 [pid 5076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5076] write(3, "1000", 4) = 4 [pid 5076] close(3) = 0 [pid 5076] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5076] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5076] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5076] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5076] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5076] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5076] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5077 attached [pid 5077] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5076] <... clone3 resumed> => {parent_tid=[5077]}, 88) = 5077 [pid 5077] <... rseq resumed>) = 0 [pid 5077] set_robust_list(0x7f50e61789a0, 24 [pid 5076] rt_sigprocmask(SIG_SETMASK, [], [pid 5077] <... set_robust_list resumed>) = 0 [pid 5076] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5077] rt_sigprocmask(SIG_SETMASK, [], [pid 5076] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5077] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5076] <... futex resumed>) = 0 [pid 5077] memfd_create("syzkaller", 0 [pid 5076] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5077] <... memfd_create resumed>) = 3 [pid 5077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5077] 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"..., 1048576) = 1048576 [pid 5077] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5077] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5077] close(3) = 0 [pid 5077] mkdir("./file0", 0777) = 0 [pid 5077] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5077] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5077] chdir("./file0") = 0 [pid 5077] ioctl(4, LOOP_CLR_FD) = 0 [pid 5077] close(4) = 0 [pid 5077] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] <... futex resumed>) = 0 [pid 5077] <... futex resumed>) = 1 [pid 5076] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5077] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5076] <... futex resumed>) = 0 [ 74.630817][ T5077] loop0: detected capacity change from 0 to 2048 [ 74.648764][ T5077] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 74.660443][ T5077] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5076] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5077] <... open resumed>) = 4 [pid 5077] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5076] <... futex resumed>) = 0 [pid 5077] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5076] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5077] <... open resumed>) = 5 [pid 5076] <... futex resumed>) = 0 [pid 5076] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5077] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] <... futex resumed>) = 0 [pid 5077] <... futex resumed>) = 1 [pid 5076] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5077] ftruncate(5, 33587199 [pid 5076] <... futex resumed>) = 0 [pid 5076] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5077] <... ftruncate resumed>) = 0 [pid 5077] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5077] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5076] <... futex resumed>) = 0 [pid 5077] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5076] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5077] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5076] <... futex resumed>) = 0 [pid 5076] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5076] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5076] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5077] <... mmap resumed>) = 0x20000000 [pid 5076] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5077] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5076] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5078 attached [pid 5077] <... futex resumed>) = 0 [pid 5078] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5076] <... clone3 resumed> => {parent_tid=[5078]}, 88) = 5078 [pid 5078] <... rseq resumed>) = 0 [pid 5076] rt_sigprocmask(SIG_SETMASK, [], [pid 5078] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5076] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5078] rt_sigprocmask(SIG_SETMASK, [], [pid 5077] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5076] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5076] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5078] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5078] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5078] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5076] <... futex resumed>) = 0 [pid 5078] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5076] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5077] <... futex resumed>) = 0 [pid 5076] <... futex resumed>) = 1 [pid 5077] read(6, [pid 5076] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5076] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5078] <... futex resumed>) = 0 [pid 5076] <... futex resumed>) = 1 [pid 5076] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5078] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5077] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5076] <... futex resumed>) = ? [pid 5078] +++ killed by SIGBUS +++ [pid 5077] +++ killed by SIGBUS +++ [pid 5076] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5076, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=25 /* 0.25 s */} --- umount2("./4", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./4/binderfs", MNT_DETACH|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 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./4") = 0 mkdir("./5", 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 5079 attached , child_tidptr=0x55555720b690) = 5079 [pid 5079] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5079] chdir("./5") = 0 [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5079] setpgid(0, 0) = 0 [pid 5079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "1000", 4) = 4 [pid 5079] close(3) = 0 [pid 5079] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5079] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5079] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5079] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5079] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5079] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5079] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5080 attached [pid 5080] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5079] <... clone3 resumed> => {parent_tid=[5080]}, 88) = 5080 [pid 5080] <... rseq resumed>) = 0 [pid 5079] rt_sigprocmask(SIG_SETMASK, [], [pid 5080] set_robust_list(0x7f50e61789a0, 24 [pid 5079] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5080] <... set_robust_list resumed>) = 0 [pid 5079] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5080] rt_sigprocmask(SIG_SETMASK, [], [pid 5079] <... futex resumed>) = 0 [pid 5080] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5080] memfd_create("syzkaller", 0 [pid 5079] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5080] <... memfd_create resumed>) = 3 [pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5080] 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"..., 1048576) = 1048576 [pid 5080] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5080] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5080] close(3) = 0 [pid 5080] mkdir("./file0", 0777) = 0 [pid 5080] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5080] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5080] chdir("./file0") = 0 [pid 5080] ioctl(4, LOOP_CLR_FD) = 0 [pid 5080] close(4) = 0 [pid 5080] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5079] <... futex resumed>) = 0 [pid 5080] <... futex resumed>) = 1 [pid 5079] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5080] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5079] <... futex resumed>) = 0 [pid 5079] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5080] <... open resumed>) = 4 [pid 5080] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5079] <... futex resumed>) = 0 [pid 5079] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5080] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5079] <... futex resumed>) = 0 [pid 5079] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5080] <... open resumed>) = 5 [pid 5080] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5079] <... futex resumed>) = 0 [pid 5080] ftruncate(5, 33587199 [pid 5079] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5080] <... ftruncate resumed>) = 0 [pid 5080] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5079] <... futex resumed>) = 0 [pid 5080] <... futex resumed>) = 1 [pid 5079] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [ 75.286339][ T5080] loop0: detected capacity change from 0 to 2048 [ 75.296490][ T5080] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 75.309244][ T5080] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5080] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5079] <... futex resumed>) = 0 [pid 5079] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5079] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5079] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5079] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5079] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5081 attached => {parent_tid=[5081]}, 88) = 5081 [pid 5079] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5081] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5079] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] <... rseq resumed>) = 0 [pid 5079] <... futex resumed>) = 0 [pid 5081] set_robust_list(0x7f50e61579a0, 24 [pid 5079] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] <... set_robust_list resumed>) = 0 [pid 5081] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5080] <... mmap resumed>) = 0x20000000 [pid 5080] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5080] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5081] <... openat resumed>) = 6 [pid 5081] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5079] <... futex resumed>) = 0 [pid 5081] <... futex resumed>) = 1 [pid 5079] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5079] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5080] <... futex resumed>) = 0 [pid 5080] read(6, [pid 5079] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5079] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5081] <... futex resumed>) = 0 [pid 5079] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5081] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5080] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5081] +++ killed by SIGBUS +++ [pid 5079] <... futex resumed>) = ? [pid 5080] +++ killed by SIGBUS +++ [pid 5079] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5079, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=25 /* 0.25 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./5", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./5/binderfs", MNT_DETACH|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 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5082 attached , child_tidptr=0x55555720b690) = 5082 [pid 5082] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5082] chdir("./6") = 0 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5082] setpgid(0, 0) = 0 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1000", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5082] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5082] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5082] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5082] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5082] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5082] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5083 attached [pid 5083] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5083] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5082] <... clone3 resumed> => {parent_tid=[5083]}, 88) = 5083 [pid 5083] rt_sigprocmask(SIG_SETMASK, [], [pid 5082] rt_sigprocmask(SIG_SETMASK, [], [pid 5083] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5082] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5083] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5082] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5082] <... futex resumed>) = 0 [pid 5083] memfd_create("syzkaller", 0 [pid 5082] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5083] <... memfd_create resumed>) = 3 [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5083] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5083] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5083] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5083] close(3) = 0 [pid 5083] mkdir("./file0", 0777) = 0 [pid 5083] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5083] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5083] chdir("./file0") = 0 [pid 5083] ioctl(4, LOOP_CLR_FD) = 0 [ 76.043730][ T5083] loop0: detected capacity change from 0 to 2048 [ 76.068281][ T5083] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 76.080360][ T5083] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5083] close(4) = 0 [pid 5083] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] <... futex resumed>) = 0 [pid 5082] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = 1 [pid 5082] <... futex resumed>) = 0 [pid 5083] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5082] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5083] <... open resumed>) = 4 [pid 5083] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] <... futex resumed>) = 0 [pid 5083] <... futex resumed>) = 1 [pid 5082] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5082] <... futex resumed>) = 0 [pid 5083] <... open resumed>) = 5 [pid 5082] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5083] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5082] <... futex resumed>) = 0 [pid 5082] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] ftruncate(5, 33587199 [pid 5082] <... futex resumed>) = 0 [pid 5082] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5083] <... ftruncate resumed>) = 0 [pid 5083] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5082] <... futex resumed>) = 0 [pid 5082] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5083] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5082] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5082] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5082] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5082] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5083] <... mmap resumed>) = 0x20000000 [pid 5082] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5082] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5084 attached [pid 5084] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5082] <... clone3 resumed> => {parent_tid=[5084]}, 88) = 5084 [pid 5084] set_robust_list(0x7f50e61579a0, 24 [pid 5083] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] rt_sigprocmask(SIG_SETMASK, [], [pid 5084] <... set_robust_list resumed>) = 0 [pid 5082] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5084] rt_sigprocmask(SIG_SETMASK, [], [pid 5082] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5084] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5082] <... futex resumed>) = 0 [pid 5083] <... futex resumed>) = 0 [pid 5082] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5084] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5083] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5084] <... openat resumed>) = 6 [pid 5084] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5082] <... futex resumed>) = 0 [pid 5084] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5082] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = 0 [pid 5082] <... futex resumed>) = 1 [pid 5082] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5083] read(6, [pid 5082] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5082] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5084] <... futex resumed>) = 0 [pid 5082] <... futex resumed>) = 1 [pid 5082] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5084] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5083] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5084] +++ killed by SIGBUS +++ [pid 5083] +++ killed by SIGBUS +++ [pid 5082] <... futex resumed>) = ? [pid 5082] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5082, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=15 /* 0.15 s */} --- umount2("./6", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./6/binderfs", MNT_DETACH|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 umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 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 5085 attached [pid 5085] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5085 [pid 5085] <... set_robust_list resumed>) = 0 [pid 5085] chdir("./7") = 0 [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5085] setpgid(0, 0) = 0 [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5085] write(3, "1000", 4) = 4 [pid 5085] close(3) = 0 [pid 5085] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5085] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5085] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5085] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5085] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5085] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5085] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5086 attached [pid 5086] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5086] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5086] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5085] <... clone3 resumed> => {parent_tid=[5086]}, 88) = 5086 [pid 5086] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5085] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5085] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] <... futex resumed>) = 0 [pid 5085] <... futex resumed>) = 1 [pid 5086] memfd_create("syzkaller", 0 [pid 5085] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5086] <... memfd_create resumed>) = 3 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5086] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5086] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5086] close(3) = 0 [pid 5086] mkdir("./file0", 0777) = 0 [ 76.868534][ T5086] loop0: detected capacity change from 0 to 2048 [ 76.904958][ T5086] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [pid 5086] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5086] chdir("./file0") = 0 [pid 5086] ioctl(4, LOOP_CLR_FD) = 0 [pid 5086] close(4) = 0 [pid 5086] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5085] <... futex resumed>) = 0 [pid 5085] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5085] <... futex resumed>) = 0 [pid 5085] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5086] <... open resumed>) = 4 [pid 5086] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5085] <... futex resumed>) = 0 [pid 5086] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5085] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] <... open resumed>) = 5 [pid 5085] <... futex resumed>) = 0 [ 76.918755][ T5086] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5086] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5085] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5086] <... futex resumed>) = 0 [pid 5085] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5086] ftruncate(5, 33587199 [pid 5085] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] <... ftruncate resumed>) = 0 [pid 5085] <... futex resumed>) = 0 [pid 5085] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5086] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5085] <... futex resumed>) = 0 [pid 5086] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5085] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5085] <... futex resumed>) = 0 [pid 5086] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5085] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5085] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5085] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5085] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5085] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} => {parent_tid=[5087]}, 88) = 5087 [pid 5085] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ./strace-static-x86_64: Process 5087 attached [pid 5085] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5087] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5085] <... futex resumed>) = 0 [pid 5087] <... rseq resumed>) = 0 [pid 5087] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5087] rt_sigprocmask(SIG_SETMASK, [], [pid 5085] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5087] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5087] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5087] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5085] <... futex resumed>) = 0 [pid 5087] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5085] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5087] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5085] <... futex resumed>) = 0 [pid 5087] read(6, [pid 5085] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5085] futex(0x7f50e62636ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6116000 [pid 5085] mprotect(0x7f50e6117000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5085] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5085] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6136990, parent_tid=0x7f50e6136990, exit_signal=0, stack=0x7f50e6116000, stack_size=0x20300, tls=0x7f50e61366c0}./strace-static-x86_64: Process 5088 attached [pid 5088] rseq(0x7f50e6136fe0, 0x20, 0, 0x53053053 [pid 5085] <... clone3 resumed> => {parent_tid=[5088]}, 88) = 5088 [pid 5088] <... rseq resumed>) = 0 [pid 5085] rt_sigprocmask(SIG_SETMASK, [], [pid 5088] set_robust_list(0x7f50e61369a0, 24 [pid 5085] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5088] <... set_robust_list resumed>) = 0 [pid 5085] futex(0x7f50e62636e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] rt_sigprocmask(SIG_SETMASK, [], [pid 5085] <... futex resumed>) = 0 [pid 5088] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5085] futex(0x7f50e62636ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5088] memfd_create("syzkaller", 0) = 7 [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd16000 [pid 5088] write(7, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5086] <... mmap resumed>) = 0x20000000 [pid 5088] munmap(0x7f50ddd16000, 138412032 [pid 5086] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5086] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5088] <... munmap resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 8 [pid 5088] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 5088] ioctl(8, LOOP_CLR_FD) = 0 [pid 5088] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 5088] close(8) = 0 [pid 5088] close(7) = 0 [pid 5088] futex(0x7f50e62636ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5085] <... futex resumed>) = 0 [pid 5088] futex(0x7f50e62636e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5085] exit_group(0 [pid 5088] <... futex resumed>) = ? [pid 5086] <... futex resumed>) = ? [pid 5085] <... exit_group resumed>) = ? [pid 5086] +++ exited with 0 +++ [pid 5088] +++ exited with 0 +++ [pid 5087] <... read resumed> ) = ? [pid 5087] +++ exited with 0 +++ [pid 5085] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5085, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=60 /* 0.60 s */} --- umount2("./7", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./7/binderfs", MNT_DETACH|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 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 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 [pid 5089] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5089] chdir("./8") = 0 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5089] setpgid(0, 0 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5089 [pid 5089] <... setpgid resumed>) = 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] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5089] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5089] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5089] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5089] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5089] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5090 attached [pid 5090] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5089] <... clone3 resumed> => {parent_tid=[5090]}, 88) = 5090 [pid 5090] set_robust_list(0x7f50e61789a0, 24 [pid 5089] rt_sigprocmask(SIG_SETMASK, [], [pid 5090] <... set_robust_list resumed>) = 0 [pid 5089] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5090] rt_sigprocmask(SIG_SETMASK, [], [pid 5089] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5089] <... futex resumed>) = 0 [pid 5090] memfd_create("syzkaller", 0 [pid 5089] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5090] <... memfd_create resumed>) = 3 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5090] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5090] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5090] close(3) = 0 [pid 5090] mkdir("./file0", 0777) = 0 [pid 5090] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5090] chdir("./file0") = 0 [pid 5090] ioctl(4, LOOP_CLR_FD) = 0 [pid 5090] close(4) = 0 [pid 5090] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5089] <... futex resumed>) = 0 [pid 5090] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5089] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5090] <... open resumed>) = 4 [pid 5089] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5090] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5089] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5090] <... futex resumed>) = 0 [pid 5089] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5089] <... futex resumed>) = 0 [pid 5089] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5090] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5089] <... futex resumed>) = 0 [pid 5089] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] ftruncate(5, 33587199 [pid 5089] <... futex resumed>) = 0 [ 78.144842][ T5090] loop0: detected capacity change from 0 to 2048 [ 78.170816][ T5090] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 78.183022][ T5090] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5089] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5090] <... ftruncate resumed>) = 0 [pid 5090] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5089] <... futex resumed>) = 0 [pid 5090] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5089] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5089] <... futex resumed>) = 0 [pid 5090] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5089] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5089] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5089] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5090] <... mmap resumed>) = 0x20000000 [pid 5089] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5090] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5089] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5089] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5091 attached [pid 5091] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5090] <... futex resumed>) = 0 [pid 5089] <... clone3 resumed> => {parent_tid=[5091]}, 88) = 5091 [pid 5091] <... rseq resumed>) = 0 [pid 5090] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5089] rt_sigprocmask(SIG_SETMASK, [], [pid 5091] set_robust_list(0x7f50e61579a0, 24 [pid 5089] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5091] <... set_robust_list resumed>) = 0 [pid 5089] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5091] rt_sigprocmask(SIG_SETMASK, [], [pid 5089] <... futex resumed>) = 0 [pid 5091] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5089] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5091] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5089] <... futex resumed>) = 0 [pid 5089] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] <... futex resumed>) = 0 [pid 5089] <... futex resumed>) = 1 [pid 5090] read(6, [pid 5089] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5089] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5089] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5089] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5091] <... futex resumed>) = 0 [pid 5091] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5089] <... futex resumed>) = ? [pid 5091] +++ killed by SIGBUS +++ [pid 5090] <... read resumed> ) = ? [pid 5090] +++ killed by SIGBUS +++ [pid 5089] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5089, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=25 /* 0.25 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./8", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./8/binderfs", MNT_DETACH|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 umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5092 attached , child_tidptr=0x55555720b690) = 5092 [pid 5092] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5092] chdir("./9") = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5092] setpgid(0, 0) = 0 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5092] write(3, "1000", 4) = 4 [pid 5092] close(3) = 0 [pid 5092] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5092] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5092] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5092] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5092] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5092] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5093 attached [pid 5093] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5092] <... clone3 resumed> => {parent_tid=[5093]}, 88) = 5093 [pid 5093] <... rseq resumed>) = 0 [pid 5092] rt_sigprocmask(SIG_SETMASK, [], [pid 5093] set_robust_list(0x7f50e61789a0, 24 [pid 5092] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5093] <... set_robust_list resumed>) = 0 [pid 5092] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5093] rt_sigprocmask(SIG_SETMASK, [], [pid 5092] <... futex resumed>) = 0 [pid 5093] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5092] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5093] memfd_create("syzkaller", 0) = 3 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5093] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5093] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5093] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5093] chdir("./file0") = 0 [pid 5093] ioctl(4, LOOP_CLR_FD) = 0 [pid 5093] close(4) = 0 [pid 5093] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5092] <... futex resumed>) = 0 [pid 5092] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5093] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5092] <... futex resumed>) = 0 [pid 5092] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] <... open resumed>) = 4 [pid 5093] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5093] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5092] <... futex resumed>) = 0 [pid 5092] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5093] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [ 78.828601][ T5093] loop0: detected capacity change from 0 to 2048 [ 78.855579][ T5093] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 78.867951][ T5093] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5093] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5093] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5092] <... futex resumed>) = 0 [pid 5092] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5093] <... futex resumed>) = 0 [pid 5093] ftruncate(5, 33587199 [pid 5092] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] <... ftruncate resumed>) = 0 [pid 5093] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5092] <... futex resumed>) = 0 [pid 5093] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5092] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5093] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5092] <... futex resumed>) = 0 [pid 5093] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5092] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5092] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5092] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5092] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5092] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5094 attached [pid 5094] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5092] <... clone3 resumed> => {parent_tid=[5094]}, 88) = 5094 [pid 5094] <... rseq resumed>) = 0 [pid 5092] rt_sigprocmask(SIG_SETMASK, [], [pid 5094] set_robust_list(0x7f50e61579a0, 24 [pid 5092] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5094] <... set_robust_list resumed>) = 0 [pid 5093] <... mmap resumed>) = 0x20000000 [pid 5092] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5094] rt_sigprocmask(SIG_SETMASK, [], [pid 5092] <... futex resumed>) = 0 [pid 5094] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5092] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5093] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5094] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5094] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... futex resumed>) = 0 [pid 5094] <... futex resumed>) = 1 [pid 5092] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5094] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5092] <... futex resumed>) = 1 [pid 5093] <... futex resumed>) = 0 [pid 5092] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] read(6, [pid 5092] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5092] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5092] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5094] <... futex resumed>) = 0 [pid 5092] <... futex resumed>) = 1 [pid 5092] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5094] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5093] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5094] +++ killed by SIGBUS +++ [pid 5093] +++ killed by SIGBUS +++ [pid 5092] <... futex resumed>) = ? [pid 5092] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5092, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=20 /* 0.20 s */} --- umount2("./9", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./9/binderfs", MNT_DETACH|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 umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5095 attached , child_tidptr=0x55555720b690) = 5095 [pid 5095] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5095] chdir("./10") = 0 [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5095] setpgid(0, 0) = 0 [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5095] write(3, "1000", 4) = 4 [pid 5095] close(3) = 0 [pid 5095] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5095] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5095] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5095] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5095] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5095] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5095] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5095] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5096 attached => {parent_tid=[5096]}, 88) = 5096 [pid 5096] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5096] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5096] rt_sigprocmask(SIG_SETMASK, [], [pid 5095] rt_sigprocmask(SIG_SETMASK, [], [pid 5096] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5095] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5096] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5095] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5095] <... futex resumed>) = 0 [pid 5095] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5096] memfd_create("syzkaller", 0) = 3 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5096] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5096] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5096] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5096] chdir("./file0") = 0 [pid 5096] ioctl(4, LOOP_CLR_FD) = 0 [pid 5096] close(4) = 0 [pid 5096] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5095] <... futex resumed>) = 0 [pid 5096] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5095] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5095] <... futex resumed>) = 0 [pid 5096] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5095] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5096] <... open resumed>) = 4 [pid 5096] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5095] <... futex resumed>) = 0 [pid 5096] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5095] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... open resumed>) = 5 [pid 5095] <... futex resumed>) = 0 [pid 5095] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5096] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5095] <... futex resumed>) = 0 [pid 5096] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5095] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5095] <... futex resumed>) = 0 [pid 5096] ftruncate(5, 33587199 [pid 5095] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5096] <... ftruncate resumed>) = 0 [pid 5096] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 79.499740][ T5096] loop0: detected capacity change from 0 to 2048 [ 79.510372][ T5096] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 79.522880][ T5096] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5096] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5095] <... futex resumed>) = 0 [pid 5095] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... futex resumed>) = 0 [pid 5095] <... futex resumed>) = 1 [pid 5096] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5095] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5095] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5095] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5095] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5095] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5096] <... mmap resumed>) = 0x20000000 [pid 5095] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5097 attached [pid 5096] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5097] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5095] <... clone3 resumed> => {parent_tid=[5097]}, 88) = 5097 [pid 5097] <... rseq resumed>) = 0 [pid 5095] rt_sigprocmask(SIG_SETMASK, [], [pid 5097] set_robust_list(0x7f50e61579a0, 24 [pid 5095] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5097] <... set_robust_list resumed>) = 0 [pid 5095] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5097] rt_sigprocmask(SIG_SETMASK, [], [pid 5095] <... futex resumed>) = 0 [pid 5097] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5095] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5096] <... futex resumed>) = 0 [pid 5096] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5097] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5097] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5095] <... futex resumed>) = 0 [pid 5097] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5095] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... futex resumed>) = 0 [pid 5096] read(6, [pid 5095] <... futex resumed>) = 1 [pid 5095] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5095] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5097] <... futex resumed>) = 0 [pid 5095] <... futex resumed>) = 1 [pid 5095] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5097] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5096] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5096] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5096] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5095] <... futex resumed>) = ? [pid 5097] +++ killed by SIGBUS +++ [pid 5096] +++ killed by SIGBUS +++ [pid 5095] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5095, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=30 /* 0.30 s */} --- umount2("./10", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./10/binderfs", MNT_DETACH|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 umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5098 attached , child_tidptr=0x55555720b690) = 5098 [pid 5098] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5098] chdir("./11") = 0 [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5098] setpgid(0, 0) = 0 [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5098] write(3, "1000", 4) = 4 [pid 5098] close(3) = 0 [pid 5098] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5098] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5098] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5098] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5098] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5098] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5098] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5099 attached => {parent_tid=[5099]}, 88) = 5099 [pid 5099] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5098] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5099] <... rseq resumed>) = 0 [pid 5098] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5099] set_robust_list(0x7f50e61789a0, 24 [pid 5098] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5099] <... set_robust_list resumed>) = 0 [pid 5099] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5099] memfd_create("syzkaller", 0) = 3 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5099] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [ 80.278708][ T5099] loop0: detected capacity change from 0 to 2048 [ 80.311479][ T5099] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [pid 5099] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5099] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5099] chdir("./file0") = 0 [pid 5099] ioctl(4, LOOP_CLR_FD) = 0 [pid 5099] close(4) = 0 [pid 5099] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5098] <... futex resumed>) = 0 [pid 5098] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [ 80.323537][ T5099] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5099] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5098] <... futex resumed>) = 0 [pid 5099] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5098] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5099] <... futex resumed>) = 0 [pid 5098] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5099] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5099] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5098] <... futex resumed>) = 0 [pid 5099] <... open resumed>) = 5 [pid 5098] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5099] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5098] <... futex resumed>) = 0 [pid 5099] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5099] ftruncate(5, 33587199 [pid 5098] <... futex resumed>) = 0 [pid 5098] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5099] <... ftruncate resumed>) = 0 [pid 5099] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5099] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] <... futex resumed>) = 0 [pid 5098] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5099] <... futex resumed>) = 0 [pid 5098] <... futex resumed>) = 1 [pid 5099] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5098] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5098] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5098] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5099] <... mmap resumed>) = 0x20000000 [pid 5098] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5099] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5098] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5099] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5100 attached [pid 5100] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5100] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5100] rt_sigprocmask(SIG_SETMASK, [], [pid 5098] <... clone3 resumed> => {parent_tid=[5100]}, 88) = 5100 [pid 5100] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5098] rt_sigprocmask(SIG_SETMASK, [], [pid 5100] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5098] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5100] <... futex resumed>) = 0 [pid 5098] <... futex resumed>) = 1 [pid 5098] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5100] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5100] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5098] <... futex resumed>) = 0 [pid 5100] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5099] <... futex resumed>) = 0 [pid 5099] read(6, [pid 5098] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5098] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5100] <... futex resumed>) = 0 [pid 5098] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5100] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5099] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5098] <... futex resumed>) = ? [pid 5099] +++ killed by SIGBUS +++ [pid 5100] +++ killed by SIGBUS +++ [pid 5098] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5098, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./11", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./11/binderfs", MNT_DETACH|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 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./11") = 0 mkdir("./12", 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 5101 attached [pid 5101] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5101 [pid 5101] <... set_robust_list resumed>) = 0 [pid 5101] chdir("./12") = 0 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5101] setpgid(0, 0) = 0 [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5101] write(3, "1000", 4) = 4 [pid 5101] close(3) = 0 [pid 5101] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5101] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5101] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5101] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5101] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5101] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5101] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5102 attached => {parent_tid=[5102]}, 88) = 5102 [pid 5102] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5101] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5101] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5102] <... rseq resumed>) = 0 [pid 5102] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5102] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5102] memfd_create("syzkaller", 0) = 3 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5102] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5102] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5102] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5102] chdir("./file0") = 0 [pid 5102] ioctl(4, LOOP_CLR_FD) = 0 [pid 5102] close(4) = 0 [pid 5102] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5101] <... futex resumed>) = 0 [pid 5102] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5101] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5102] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5101] <... futex resumed>) = 0 [pid 5102] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5101] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5102] <... open resumed>) = 4 [pid 5102] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 81.026590][ T5102] loop0: detected capacity change from 0 to 2048 [ 81.043058][ T5102] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 81.055410][ T5102] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5101] <... futex resumed>) = 0 [pid 5102] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5101] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5102] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5101] <... futex resumed>) = 0 [pid 5102] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5101] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5102] <... open resumed>) = 5 [pid 5102] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5102] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5101] <... futex resumed>) = 0 [pid 5101] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5102] <... futex resumed>) = 0 [pid 5101] <... futex resumed>) = 1 [pid 5102] ftruncate(5, 33587199 [pid 5101] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5102] <... ftruncate resumed>) = 0 [pid 5102] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5102] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5101] <... futex resumed>) = 0 [pid 5101] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5102] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5101] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5102] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5101] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5101] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5101] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5102] <... mmap resumed>) = 0x20000000 [pid 5101] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5101] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5102] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5103 attached ) = 0 [pid 5103] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5102] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5103] <... rseq resumed>) = 0 [pid 5103] set_robust_list(0x7f50e61579a0, 24 [pid 5101] <... clone3 resumed> => {parent_tid=[5103]}, 88) = 5103 [pid 5103] <... set_robust_list resumed>) = 0 [pid 5101] rt_sigprocmask(SIG_SETMASK, [], [pid 5103] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5101] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5103] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5101] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5103] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5101] <... futex resumed>) = 0 [pid 5101] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5103] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5103] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5101] <... futex resumed>) = 0 [pid 5103] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5101] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5102] <... futex resumed>) = 0 [pid 5101] <... futex resumed>) = 1 [pid 5102] read(6, [pid 5101] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5101] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5101] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5103] <... futex resumed>) = 0 [pid 5103] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5102] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5102] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5102] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5101] <... futex resumed>) = ? [pid 5103] +++ killed by SIGBUS +++ [pid 5102] +++ killed by SIGBUS +++ [pid 5101] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5101, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./12", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./12/binderfs", MNT_DETACH|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 umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5104 attached [pid 5104] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5104] chdir("./13" [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5104 [pid 5104] <... chdir resumed>) = 0 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5104] setpgid(0, 0) = 0 [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5104] write(3, "1000", 4) = 4 [pid 5104] close(3) = 0 [pid 5104] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5104] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5104] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5104] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5104] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5104] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5105 attached => {parent_tid=[5105]}, 88) = 5105 [pid 5105] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5105] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5105] rt_sigprocmask(SIG_SETMASK, [], [pid 5104] rt_sigprocmask(SIG_SETMASK, [], [pid 5105] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5105] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5104] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5104] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5105] <... futex resumed>) = 0 [pid 5104] <... futex resumed>) = 1 [pid 5105] memfd_create("syzkaller", 0 [pid 5104] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5105] <... memfd_create resumed>) = 3 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5105] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5105] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5105] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5105] chdir("./file0") = 0 [pid 5105] ioctl(4, LOOP_CLR_FD) = 0 [pid 5105] close(4) = 0 [pid 5105] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5105] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5104] <... futex resumed>) = 0 [pid 5104] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5105] <... futex resumed>) = 0 [pid 5105] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5104] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5105] <... open resumed>) = 4 [pid 5105] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5104] <... futex resumed>) = 0 [pid 5105] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5104] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5105] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5104] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5105] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5105] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5104] <... futex resumed>) = 0 [pid 5104] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5105] ftruncate(5, 33587199 [pid 5104] <... futex resumed>) = 0 [pid 5105] <... ftruncate resumed>) = 0 [pid 5104] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5105] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5104] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5104] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5105] <... futex resumed>) = 1 [pid 5104] <... futex resumed>) = 0 [pid 5105] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [ 81.745543][ T5105] loop0: detected capacity change from 0 to 2048 [ 81.756433][ T5105] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 81.768191][ T5105] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5104] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5104] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5104] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5104] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5105] <... mmap resumed>) = 0x20000000 [pid 5104] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5105] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5104] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5106 attached [pid 5106] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5105] <... futex resumed>) = 0 [pid 5104] <... clone3 resumed> => {parent_tid=[5106]}, 88) = 5106 [pid 5106] <... rseq resumed>) = 0 [pid 5105] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5104] rt_sigprocmask(SIG_SETMASK, [], [pid 5106] set_robust_list(0x7f50e61579a0, 24 [pid 5104] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5106] <... set_robust_list resumed>) = 0 [pid 5104] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5106] rt_sigprocmask(SIG_SETMASK, [], [pid 5104] <... futex resumed>) = 0 [pid 5106] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5104] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5106] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5106] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5104] <... futex resumed>) = 0 [pid 5106] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5104] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5105] <... futex resumed>) = 0 [pid 5105] read(6, [pid 5104] <... futex resumed>) = 1 [pid 5104] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5104] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5104] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5106] <... futex resumed>) = 0 [pid 5104] <... futex resumed>) = 1 [pid 5104] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5106] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5105] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5104] <... futex resumed>) = ? [pid 5105] +++ killed by SIGBUS +++ [pid 5106] +++ killed by SIGBUS +++ [pid 5104] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5104, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./13", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./13/binderfs", MNT_DETACH|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 umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./13") = 0 mkdir("./14", 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 5107 attached , child_tidptr=0x55555720b690) = 5107 [pid 5107] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5107] chdir("./14") = 0 [pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5107] setpgid(0, 0) = 0 [pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5107] write(3, "1000", 4) = 4 [pid 5107] close(3) = 0 [pid 5107] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5107] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5107] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5107] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5107] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5107] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5107] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5108 attached [pid 5108] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5107] <... clone3 resumed> => {parent_tid=[5108]}, 88) = 5108 [pid 5108] <... rseq resumed>) = 0 [pid 5108] set_robust_list(0x7f50e61789a0, 24 [pid 5107] rt_sigprocmask(SIG_SETMASK, [], [pid 5108] <... set_robust_list resumed>) = 0 [pid 5107] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5108] rt_sigprocmask(SIG_SETMASK, [], [pid 5107] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5108] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5107] <... futex resumed>) = 0 [pid 5108] memfd_create("syzkaller", 0 [pid 5107] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5108] <... memfd_create resumed>) = 3 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5108] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5108] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5108] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] chdir("./file0") = 0 [pid 5108] ioctl(4, LOOP_CLR_FD) = 0 [ 82.486118][ T5108] loop0: detected capacity change from 0 to 2048 [ 82.513923][ T5108] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 82.526053][ T5108] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5108] close(4) = 0 [pid 5108] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5107] <... futex resumed>) = 0 [pid 5107] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5108] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5107] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5108] <... open resumed>) = 4 [pid 5108] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5107] <... futex resumed>) = 0 [pid 5107] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5108] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5107] <... futex resumed>) = 0 [pid 5107] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5108] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5107] <... futex resumed>) = 0 [pid 5108] <... futex resumed>) = 1 [pid 5108] ftruncate(5, 33587199 [pid 5107] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5107] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5108] <... ftruncate resumed>) = 0 [pid 5108] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5107] <... futex resumed>) = 0 [pid 5108] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5107] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5107] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5107] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5107] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5108] <... mmap resumed>) = 0x20000000 [pid 5108] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5107] <... mprotect resumed>) = 0 [pid 5107] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5108] <... futex resumed>) = 0 [pid 5108] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5107] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5107] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5109 attached => {parent_tid=[5109]}, 88) = 5109 [pid 5107] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5109] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5107] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5109] set_robust_list(0x7f50e61579a0, 24 [pid 5107] <... futex resumed>) = 0 [pid 5109] <... set_robust_list resumed>) = 0 [pid 5107] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5109] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5109] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5109] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5107] <... futex resumed>) = 0 [pid 5109] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5107] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5108] <... futex resumed>) = 0 [pid 5107] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5108] read(6, [pid 5107] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5107] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5109] <... futex resumed>) = 0 [pid 5107] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5109] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5107] <... futex resumed>) = ? [pid 5108] <... read resumed> ) = ? [pid 5109] +++ killed by SIGBUS +++ [pid 5108] +++ killed by SIGBUS +++ [pid 5107] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5107, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- umount2("./14", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./14/binderfs", MNT_DETACH|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 umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./14") = 0 mkdir("./15", 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 5110 attached , child_tidptr=0x55555720b690) = 5110 [pid 5110] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5110] chdir("./15") = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5110] setpgid(0, 0) = 0 [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5110] write(3, "1000", 4) = 4 [pid 5110] close(3) = 0 [pid 5110] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5110] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5110] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5110] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5110] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5111 attached [pid 5111] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5110] <... clone3 resumed> => {parent_tid=[5111]}, 88) = 5111 [pid 5111] set_robust_list(0x7f50e61789a0, 24 [pid 5110] rt_sigprocmask(SIG_SETMASK, [], [pid 5111] <... set_robust_list resumed>) = 0 [pid 5110] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5111] rt_sigprocmask(SIG_SETMASK, [], [pid 5110] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5111] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5110] <... futex resumed>) = 0 [pid 5111] memfd_create("syzkaller", 0 [pid 5110] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5111] <... memfd_create resumed>) = 3 [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5111] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5111] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5111] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5111] chdir("./file0") = 0 [pid 5111] ioctl(4, LOOP_CLR_FD) = 0 [pid 5111] close(4) = 0 [pid 5111] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5110] <... futex resumed>) = 0 [pid 5111] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5110] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5110] <... futex resumed>) = 0 [pid 5111] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5110] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5111] <... open resumed>) = 4 [pid 5111] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5110] <... futex resumed>) = 0 [pid 5111] <... futex resumed>) = 1 [pid 5110] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5111] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5110] <... futex resumed>) = 0 [pid 5111] <... open resumed>) = 5 [pid 5110] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 83.282605][ T5111] loop0: detected capacity change from 0 to 2048 [ 83.293482][ T5111] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 83.306077][ T5111] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5111] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5110] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5111] ftruncate(5, 33587199 [pid 5110] <... futex resumed>) = 0 [pid 5111] <... ftruncate resumed>) = 0 [pid 5110] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5111] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5111] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5110] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5110] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5111] <... futex resumed>) = 0 [pid 5110] <... futex resumed>) = 1 [pid 5111] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5110] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5110] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5110] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5110] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5111] <... mmap resumed>) = 0x20000000 [pid 5111] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5112 attached [pid 5111] <... futex resumed>) = 0 [pid 5112] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5111] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5110] <... clone3 resumed> => {parent_tid=[5112]}, 88) = 5112 [pid 5112] <... rseq resumed>) = 0 [pid 5112] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5112] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5110] rt_sigprocmask(SIG_SETMASK, [], [pid 5112] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5110] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5110] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5112] <... futex resumed>) = 0 [pid 5110] <... futex resumed>) = 1 [pid 5110] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5112] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5112] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5110] <... futex resumed>) = 0 [pid 5112] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5110] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5110] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5111] <... futex resumed>) = 0 [pid 5111] read(6, [pid 5110] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5110] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5112] <... futex resumed>) = 0 [pid 5110] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5112] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5111] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5111] +++ killed by SIGBUS +++ [pid 5110] <... futex resumed>) = ? [pid 5112] +++ killed by SIGBUS +++ [pid 5110] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5110, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./15", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./15/binderfs", MNT_DETACH|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 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./15") = 0 mkdir("./16", 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 5113 attached , child_tidptr=0x55555720b690) = 5113 [pid 5113] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5113] chdir("./16") = 0 [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5113] setpgid(0, 0) = 0 [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5113] write(3, "1000", 4) = 4 [pid 5113] close(3) = 0 [pid 5113] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5113] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5113] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5113] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5113] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5113] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5113] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5113] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5114 attached [pid 5114] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5114] set_robust_list(0x7f50e61789a0, 24 [pid 5113] <... clone3 resumed> => {parent_tid=[5114]}, 88) = 5114 [pid 5113] rt_sigprocmask(SIG_SETMASK, [], [pid 5114] <... set_robust_list resumed>) = 0 [pid 5113] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5114] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5113] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5113] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5114] memfd_create("syzkaller", 0) = 3 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5114] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5114] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5114] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] chdir("./file0") = 0 [pid 5114] ioctl(4, LOOP_CLR_FD) = 0 [pid 5114] close(4) = 0 [pid 5114] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5114] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5113] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5114] <... futex resumed>) = 0 [pid 5113] <... futex resumed>) = 1 [pid 5114] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [ 83.964515][ T5114] loop0: detected capacity change from 0 to 2048 [ 83.983720][ T5114] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 83.995938][ T5114] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5113] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5114] <... open resumed>) = 4 [pid 5114] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5114] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5113] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5114] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5113] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5114] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5114] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5114] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5113] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5114] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5114] ftruncate(5, 33587199 [pid 5113] <... futex resumed>) = 0 [pid 5113] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5114] <... ftruncate resumed>) = 0 [pid 5114] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5114] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5113] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5113] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5113] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5113] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5113] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5113] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5113] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5114] <... mmap resumed>) = 0x20000000 [pid 5114] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5113] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5113] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5114] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5115 attached [pid 5114] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5113] <... clone3 resumed> => {parent_tid=[5115]}, 88) = 5115 [pid 5113] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5113] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5115] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5113] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5115] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5115] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5115] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5115] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5115] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5113] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5114] <... futex resumed>) = 0 [pid 5114] read(6, [pid 5113] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5113] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5115] <... futex resumed>) = 0 [pid 5113] <... futex resumed>) = 1 [pid 5113] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5115] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5114] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5113] <... futex resumed>) = ? [pid 5114] +++ killed by SIGBUS +++ [pid 5115] +++ killed by SIGBUS +++ [pid 5113] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5113, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./16", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/binderfs") = 0 umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5116 attached , child_tidptr=0x55555720b690) = 5116 [pid 5116] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5116] chdir("./17") = 0 [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5116] setpgid(0, 0) = 0 [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5116] write(3, "1000", 4) = 4 [pid 5116] close(3) = 0 [pid 5116] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5116] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5116] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5116] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5116] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5116] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5117 attached => {parent_tid=[5117]}, 88) = 5117 [pid 5116] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5117] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5116] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5117] set_robust_list(0x7f50e61789a0, 24 [pid 5116] <... futex resumed>) = 0 [pid 5117] <... set_robust_list resumed>) = 0 [pid 5116] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5117] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5117] memfd_create("syzkaller", 0) = 3 [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5117] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5117] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5117] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5117] chdir("./file0") = 0 [pid 5117] ioctl(4, LOOP_CLR_FD) = 0 [pid 5117] close(4) = 0 [pid 5117] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5116] <... futex resumed>) = 0 [pid 5117] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5116] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5117] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5117] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5116] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5117] <... open resumed>) = 4 [pid 5117] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 84.695615][ T5117] loop0: detected capacity change from 0 to 2048 [ 84.722849][ T5117] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 84.734984][ T5117] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5117] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5116] <... futex resumed>) = 0 [pid 5116] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5116] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5117] <... futex resumed>) = 0 [pid 5117] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5117] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5116] <... futex resumed>) = 0 [pid 5117] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5116] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5117] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5116] <... futex resumed>) = 0 [pid 5117] ftruncate(5, 33587199 [pid 5116] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5117] <... ftruncate resumed>) = 0 [pid 5117] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5116] <... futex resumed>) = 0 [pid 5117] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5116] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5117] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5116] <... futex resumed>) = 0 [pid 5117] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5116] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5116] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5116] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5117] <... mmap resumed>) = 0x20000000 [pid 5116] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5117] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5117] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5116] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5116] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} => {parent_tid=[5118]}, 88) = 5118 [pid 5116] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 5118 attached [pid 5118] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5116] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5118] <... rseq resumed>) = 0 [pid 5116] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5118] set_robust_list(0x7f50e61579a0, 24 [pid 5116] <... futex resumed>) = 0 [pid 5118] <... set_robust_list resumed>) = 0 [pid 5116] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5118] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5118] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5118] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5118] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5116] <... futex resumed>) = 0 [pid 5116] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5117] <... futex resumed>) = 0 [pid 5116] <... futex resumed>) = 1 [pid 5117] read(6, [pid 5116] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5116] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5118] <... futex resumed>) = 0 [pid 5116] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5118] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5117] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 241536 [pid 5116] <... futex resumed>) = ? [pid 5118] +++ killed by SIGBUS +++ [pid 5117] +++ killed by SIGBUS +++ [pid 5116] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5116, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./17", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./17/binderfs", MNT_DETACH|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 umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5119 attached , child_tidptr=0x55555720b690) = 5119 [pid 5119] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5119] chdir("./18") = 0 [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5119] setpgid(0, 0) = 0 [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5119] write(3, "1000", 4) = 4 [pid 5119] close(3) = 0 [pid 5119] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5119] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5119] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5119] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5119] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5119] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5119] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5120 attached [pid 5120] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5119] <... clone3 resumed> => {parent_tid=[5120]}, 88) = 5120 [pid 5120] set_robust_list(0x7f50e61789a0, 24 [pid 5119] rt_sigprocmask(SIG_SETMASK, [], [pid 5120] <... set_robust_list resumed>) = 0 [pid 5119] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5120] rt_sigprocmask(SIG_SETMASK, [], [pid 5119] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5119] <... futex resumed>) = 0 [pid 5120] memfd_create("syzkaller", 0 [pid 5119] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5120] <... memfd_create resumed>) = 3 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5120] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5120] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5120] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] chdir("./file0") = 0 [pid 5120] ioctl(4, LOOP_CLR_FD) = 0 [pid 5120] close(4) = 0 [ 85.514208][ T5120] loop0: detected capacity change from 0 to 2048 [ 85.540016][ T5120] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 85.552129][ T5120] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5120] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5120] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5119] <... futex resumed>) = 0 [pid 5119] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5119] <... futex resumed>) = 0 [pid 5120] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5119] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5120] <... open resumed>) = 4 [pid 5120] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5120] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5119] <... futex resumed>) = 0 [pid 5119] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5119] <... futex resumed>) = 0 [pid 5120] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5119] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5120] <... open resumed>) = 5 [pid 5120] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5120] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5119] <... futex resumed>) = 0 [pid 5119] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5120] <... futex resumed>) = 0 [pid 5119] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5120] ftruncate(5, 33587199) = 0 [pid 5120] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5119] <... futex resumed>) = 0 [pid 5119] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5119] <... futex resumed>) = 0 [pid 5119] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5119] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5119] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5119] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5120] <... mmap resumed>) = 0x20000000 [pid 5120] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5119] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5119] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5120] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5121 attached [pid 5120] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5121] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5121] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5121] rt_sigprocmask(SIG_SETMASK, [], [pid 5119] <... clone3 resumed> => {parent_tid=[5121]}, 88) = 5121 [pid 5121] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5119] rt_sigprocmask(SIG_SETMASK, [], [pid 5121] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5119] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5119] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5121] <... futex resumed>) = 0 [pid 5119] <... futex resumed>) = 1 [pid 5119] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5121] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5121] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5119] <... futex resumed>) = 0 [pid 5121] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5119] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] <... futex resumed>) = 0 [pid 5119] <... futex resumed>) = 1 [pid 5120] read(6, [pid 5119] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5119] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5121] <... futex resumed>) = 0 [pid 5119] <... futex resumed>) = 1 [pid 5119] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5121] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5120] <... read resumed>) = ? [pid 5121] +++ killed by SIGBUS +++ [pid 5120] +++ killed by SIGBUS +++ [pid 5119] <... futex resumed>) = ? [pid 5119] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5119, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./18", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./18/binderfs", MNT_DETACH|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 umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./18") = 0 mkdir("./19", 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 5122 attached [pid 5122] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5122 [pid 5122] <... set_robust_list resumed>) = 0 [pid 5122] chdir("./19") = 0 [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5122] setpgid(0, 0) = 0 [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5122] write(3, "1000", 4) = 4 [pid 5122] close(3) = 0 [pid 5122] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5122] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5122] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5122] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5122] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5122] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5122] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5123 attached [pid 5123] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5122] <... clone3 resumed> => {parent_tid=[5123]}, 88) = 5123 [pid 5123] <... rseq resumed>) = 0 [pid 5123] set_robust_list(0x7f50e61789a0, 24 [pid 5122] rt_sigprocmask(SIG_SETMASK, [], [pid 5123] <... set_robust_list resumed>) = 0 [pid 5122] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5123] rt_sigprocmask(SIG_SETMASK, [], [pid 5122] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5123] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5122] <... futex resumed>) = 0 [pid 5123] memfd_create("syzkaller", 0 [pid 5122] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5123] <... memfd_create resumed>) = 3 [pid 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5123] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5123] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5123] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5123] chdir("./file0") = 0 [pid 5123] ioctl(4, LOOP_CLR_FD) = 0 [pid 5123] close(4) = 0 [pid 5123] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5122] <... futex resumed>) = 0 [pid 5123] <... futex resumed>) = 1 [pid 5122] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5123] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5122] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5123] <... open resumed>) = 4 [pid 5123] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5122] <... futex resumed>) = 0 [pid 5123] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5122] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5123] <... open resumed>) = 5 [pid 5122] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5123] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5122] <... futex resumed>) = 0 [pid 5123] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5122] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5123] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5122] <... futex resumed>) = 0 [pid 5122] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5123] ftruncate(5, 33587199) = 0 [pid 5123] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5122] <... futex resumed>) = 0 [ 86.298582][ T5123] loop0: detected capacity change from 0 to 2048 [ 86.314113][ T5123] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 86.326232][ T5123] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5122] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5123] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5122] <... futex resumed>) = 0 [pid 5122] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5122] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5122] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5123] <... mmap resumed>) = 0x20000000 [pid 5122] <... mprotect resumed>) = 0 [pid 5123] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5122] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5123] <... futex resumed>) = 0 [pid 5123] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5122] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5122] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5124 attached => {parent_tid=[5124]}, 88) = 5124 [pid 5124] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5122] rt_sigprocmask(SIG_SETMASK, [], [pid 5124] set_robust_list(0x7f50e61579a0, 24 [pid 5122] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5124] <... set_robust_list resumed>) = 0 [pid 5122] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5124] rt_sigprocmask(SIG_SETMASK, [], [pid 5122] <... futex resumed>) = 0 [pid 5124] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5122] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5124] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5124] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5124] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5122] <... futex resumed>) = 0 [pid 5122] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5123] <... futex resumed>) = 0 [pid 5122] <... futex resumed>) = 1 [pid 5122] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5123] read(6, [pid 5122] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5122] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5124] <... futex resumed>) = 0 [pid 5122] <... futex resumed>) = 1 [pid 5122] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5124] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5123] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5122] <... futex resumed>) = ? [pid 5124] +++ killed by SIGBUS +++ [pid 5123] +++ killed by SIGBUS +++ [pid 5122] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5122, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=27 /* 0.27 s */} --- umount2("./19", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./19/binderfs", MNT_DETACH|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 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./19") = 0 mkdir("./20", 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 5125 attached , child_tidptr=0x55555720b690) = 5125 [pid 5125] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5125] chdir("./20") = 0 [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5125] setpgid(0, 0) = 0 [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5125] write(3, "1000", 4) = 4 [pid 5125] close(3) = 0 [pid 5125] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5125] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5125] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5125] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5125] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5125] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5125] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5126 attached => {parent_tid=[5126]}, 88) = 5126 [pid 5125] rt_sigprocmask(SIG_SETMASK, [], [pid 5126] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5125] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5125] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5125] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5126] <... rseq resumed>) = 0 [pid 5126] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5126] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5126] memfd_create("syzkaller", 0) = 3 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5126] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5126] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5126] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5126] chdir("./file0") = 0 [pid 5126] ioctl(4, LOOP_CLR_FD) = 0 [pid 5126] close(4) = 0 [pid 5126] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5126] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5125] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5126] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5125] <... futex resumed>) = 0 [ 86.955527][ T5126] loop0: detected capacity change from 0 to 2048 [ 86.972029][ T5126] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 86.984316][ T5126] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 86.995008][ T925] cfg80211: failed to load regulatory.db [pid 5125] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5126] <... open resumed>) = 4 [pid 5126] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5126] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5125] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... open resumed>) = 5 [pid 5125] <... futex resumed>) = 0 [pid 5125] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5126] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5125] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5126] ftruncate(5, 33587199 [pid 5125] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5126] <... ftruncate resumed>) = 0 [pid 5126] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5126] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5125] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5125] <... futex resumed>) = 0 [pid 5126] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5125] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5125] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5125] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5126] <... mmap resumed>) = 0x20000000 [pid 5126] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5125] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5126] <... futex resumed>) = 0 [pid 5126] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5125] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5125] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5127 attached [pid 5127] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5125] <... clone3 resumed> => {parent_tid=[5127]}, 88) = 5127 [pid 5127] <... rseq resumed>) = 0 [pid 5125] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5125] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5125] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5127] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5127] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5127] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5127] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5127] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5125] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... futex resumed>) = 0 [pid 5126] read(6, [pid 5125] <... futex resumed>) = 1 [pid 5125] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5125] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5127] <... futex resumed>) = 0 [pid 5125] <... futex resumed>) = 1 [pid 5125] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5127] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5126] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5126] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5126] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5125] <... futex resumed>) = ? [pid 5126] +++ killed by SIGBUS +++ [pid 5127] +++ killed by SIGBUS +++ [pid 5125] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5125, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=18 /* 0.18 s */} --- umount2("./20", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./20/binderfs", MNT_DETACH|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 umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5128 attached [pid 5128] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5128 [pid 5128] <... set_robust_list resumed>) = 0 [pid 5128] chdir("./21") = 0 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5128] setpgid(0, 0) = 0 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5128] write(3, "1000", 4) = 4 [pid 5128] close(3) = 0 [pid 5128] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5128] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5128] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5128] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5128] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5128] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5128] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5129 attached [pid 5129] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5128] <... clone3 resumed> => {parent_tid=[5129]}, 88) = 5129 [pid 5129] set_robust_list(0x7f50e61789a0, 24 [pid 5128] rt_sigprocmask(SIG_SETMASK, [], [pid 5129] <... set_robust_list resumed>) = 0 [pid 5129] rt_sigprocmask(SIG_SETMASK, [], [pid 5128] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5129] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5128] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] memfd_create("syzkaller", 0 [pid 5128] <... futex resumed>) = 0 [pid 5128] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5129] <... memfd_create resumed>) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5129] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5129] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5129] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5129] chdir("./file0") = 0 [pid 5129] ioctl(4, LOOP_CLR_FD) = 0 [pid 5129] close(4) = 0 [pid 5129] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5129] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5128] <... futex resumed>) = 0 [pid 5128] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] <... futex resumed>) = 0 [pid 5128] <... futex resumed>) = 1 [pid 5129] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5128] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5129] <... open resumed>) = 4 [pid 5129] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5128] <... futex resumed>) = 0 [pid 5128] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5128] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5129] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5129] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5128] <... futex resumed>) = 0 [pid 5128] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 87.729588][ T5129] loop0: detected capacity change from 0 to 2048 [ 87.745585][ T5129] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 87.758103][ T5129] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5128] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5129] <... futex resumed>) = 1 [pid 5129] ftruncate(5, 33587199) = 0 [pid 5129] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5128] <... futex resumed>) = 0 [pid 5129] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5128] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5128] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5128] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5128] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5128] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5128] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5130 attached [pid 5130] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5128] <... clone3 resumed> => {parent_tid=[5130]}, 88) = 5130 [pid 5130] <... rseq resumed>) = 0 [pid 5128] rt_sigprocmask(SIG_SETMASK, [], [pid 5130] set_robust_list(0x7f50e61579a0, 24 [pid 5128] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5130] <... set_robust_list resumed>) = 0 [pid 5128] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5130] rt_sigprocmask(SIG_SETMASK, [], [pid 5128] <... futex resumed>) = 0 [pid 5130] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5128] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5130] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5129] <... mmap resumed>) = 0x20000000 [pid 5130] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5130] <... futex resumed>) = 1 [pid 5129] <... futex resumed>) = 0 [pid 5128] <... futex resumed>) = 0 [pid 5129] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5128] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5128] <... futex resumed>) = 0 [pid 5129] read(6, [pid 5128] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5130] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5128] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5128] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5128] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5130] <... futex resumed>) = 0 [pid 5128] <... futex resumed>) = 1 [pid 5128] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5130] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20079000} --- [pid 5129] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 208768 [pid 5129] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5128] <... futex resumed>) = ? [pid 5130] +++ killed by SIGBUS +++ [pid 5129] +++ killed by SIGBUS +++ [pid 5128] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5128, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./21", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./21/binderfs", MNT_DETACH|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 umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5131 attached , child_tidptr=0x55555720b690) = 5131 [pid 5131] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5131] chdir("./22") = 0 [pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5131] setpgid(0, 0) = 0 [pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5131] write(3, "1000", 4) = 4 [pid 5131] close(3) = 0 [pid 5131] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5131] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5131] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5131] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5131] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5131] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5131] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5131] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5132 attached [pid 5132] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5131] <... clone3 resumed> => {parent_tid=[5132]}, 88) = 5132 [pid 5132] set_robust_list(0x7f50e61789a0, 24 [pid 5131] rt_sigprocmask(SIG_SETMASK, [], [pid 5132] <... set_robust_list resumed>) = 0 [pid 5131] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5132] rt_sigprocmask(SIG_SETMASK, [], [pid 5131] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5132] memfd_create("syzkaller", 0 [pid 5131] <... futex resumed>) = 0 [pid 5131] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5132] <... memfd_create resumed>) = 3 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5132] 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"..., 1048576) = 1048576 [pid 5132] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5132] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5132] close(3) = 0 [pid 5132] mkdir("./file0", 0777) = 0 [pid 5132] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5132] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5132] chdir("./file0") = 0 [pid 5132] ioctl(4, LOOP_CLR_FD) = 0 [pid 5132] close(4) = 0 [pid 5132] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5131] <... futex resumed>) = 0 [pid 5131] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5131] <... futex resumed>) = 0 [ 88.452922][ T5132] loop0: detected capacity change from 0 to 2048 [ 88.478315][ T5132] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 88.490067][ T5132] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5131] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5132] <... open resumed>) = 4 [pid 5132] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5131] <... futex resumed>) = 0 [pid 5131] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] <... futex resumed>) = 1 [pid 5131] <... futex resumed>) = 0 [pid 5132] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5131] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5132] <... open resumed>) = 5 [pid 5132] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5132] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] <... futex resumed>) = 0 [pid 5132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5131] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] ftruncate(5, 33587199 [pid 5131] <... futex resumed>) = 0 [pid 5131] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5132] <... ftruncate resumed>) = 0 [pid 5132] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5131] <... futex resumed>) = 0 [pid 5132] <... futex resumed>) = 1 [pid 5131] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5131] <... futex resumed>) = 0 [pid 5131] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5131] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5131] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5131] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5132] <... mmap resumed>) = 0x20000000 [pid 5131] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5132] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5131] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5132] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5133 attached => {parent_tid=[5133]}, 88) = 5133 [pid 5131] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5131] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5133] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5131] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5133] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5133] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5133] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5133] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5131] <... futex resumed>) = 0 [pid 5133] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5131] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5132] <... futex resumed>) = 0 [pid 5132] read(6, [pid 5131] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5131] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5133] <... futex resumed>) = 0 [pid 5131] <... futex resumed>) = 1 [pid 5131] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5133] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5132] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5131] <... futex resumed>) = ? [pid 5133] +++ killed by SIGBUS +++ [pid 5132] +++ killed by SIGBUS +++ [pid 5131] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5131, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./22", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./22/binderfs", MNT_DETACH|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 umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5134 attached [pid 5134] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5134 [pid 5134] <... set_robust_list resumed>) = 0 [pid 5134] chdir("./23") = 0 [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5134] setpgid(0, 0) = 0 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5134] write(3, "1000", 4) = 4 [pid 5134] close(3) = 0 [pid 5134] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5134] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5134] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5134] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5134] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5134] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5134] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5135 attached [pid 5135] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5134] <... clone3 resumed> => {parent_tid=[5135]}, 88) = 5135 [pid 5135] <... rseq resumed>) = 0 [pid 5134] rt_sigprocmask(SIG_SETMASK, [], [pid 5135] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5134] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5135] rt_sigprocmask(SIG_SETMASK, [], [pid 5134] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5135] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5134] <... futex resumed>) = 0 [pid 5135] memfd_create("syzkaller", 0 [pid 5134] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5135] <... memfd_create resumed>) = 3 [pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5135] 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"..., 1048576) = 1048576 [pid 5135] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5135] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5135] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5135] close(3) = 0 [pid 5135] mkdir("./file0", 0777) = 0 [pid 5135] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5135] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5135] chdir("./file0") = 0 [pid 5135] ioctl(4, LOOP_CLR_FD) = 0 [pid 5135] close(4) = 0 [ 89.137219][ T5135] loop0: detected capacity change from 0 to 2048 [ 89.153193][ T5135] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 89.165555][ T5135] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5135] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5134] <... futex resumed>) = 0 [pid 5135] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5134] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5135] <... futex resumed>) = 0 [pid 5134] <... futex resumed>) = 1 [pid 5135] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5134] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5135] <... open resumed>) = 4 [pid 5135] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5134] <... futex resumed>) = 0 [pid 5135] <... futex resumed>) = 1 [pid 5134] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5135] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5134] <... futex resumed>) = 0 [pid 5135] <... open resumed>) = 5 [pid 5134] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5135] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5134] <... futex resumed>) = 0 [pid 5135] ftruncate(5, 33587199 [pid 5134] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5135] <... ftruncate resumed>) = 0 [pid 5134] <... futex resumed>) = 0 [pid 5135] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5134] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5135] <... futex resumed>) = 0 [pid 5134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5135] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5134] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5135] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5134] <... futex resumed>) = 0 [pid 5135] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5134] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5134] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5134] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5134] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5135] <... mmap resumed>) = 0x20000000 [pid 5134] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5135] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5134] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5135] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5136 attached [pid 5134] <... clone3 resumed> => {parent_tid=[5136]}, 88) = 5136 [pid 5136] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5135] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5136] <... rseq resumed>) = 0 [pid 5134] rt_sigprocmask(SIG_SETMASK, [], [pid 5136] set_robust_list(0x7f50e61579a0, 24 [pid 5134] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5136] <... set_robust_list resumed>) = 0 [pid 5134] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5136] rt_sigprocmask(SIG_SETMASK, [], [pid 5134] <... futex resumed>) = 0 [pid 5136] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5134] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5136] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5136] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5134] <... futex resumed>) = 0 [pid 5136] <... futex resumed>) = 1 [pid 5136] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5134] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5135] <... futex resumed>) = 0 [pid 5135] read(6, [pid 5134] <... futex resumed>) = 1 [pid 5134] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5134] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5136] <... futex resumed>) = 0 [pid 5134] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5136] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5135] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5134] <... futex resumed>) = ? [pid 5136] +++ killed by SIGBUS +++ [pid 5135] +++ killed by SIGBUS +++ [pid 5134] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5134, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./23", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/binderfs") = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5137 attached , child_tidptr=0x55555720b690) = 5137 [pid 5137] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5137] chdir("./24") = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5137] setpgid(0, 0) = 0 [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5137] write(3, "1000", 4) = 4 [pid 5137] close(3) = 0 [pid 5137] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5137] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5137] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5137] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5137] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5137] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5137] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5137] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5138 attached => {parent_tid=[5138]}, 88) = 5138 [pid 5137] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5138] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5137] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] set_robust_list(0x7f50e61789a0, 24 [pid 5137] <... futex resumed>) = 0 [pid 5138] <... set_robust_list resumed>) = 0 [pid 5137] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5138] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5138] memfd_create("syzkaller", 0) = 3 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5138] 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"..., 1048576) = 1048576 [pid 5138] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5138] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5138] close(3) = 0 [pid 5138] mkdir("./file0", 0777) = 0 [pid 5138] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5138] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5138] chdir("./file0") = 0 [pid 5138] ioctl(4, LOOP_CLR_FD) = 0 [pid 5138] close(4) = 0 [ 89.934190][ T5138] loop0: detected capacity change from 0 to 2048 [ 89.949211][ T5138] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 89.961695][ T5138] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5138] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5138] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5138] <... futex resumed>) = 0 [pid 5137] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5138] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5138] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5138] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5138] <... futex resumed>) = 0 [pid 5138] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5138] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5138] ftruncate(5, 33587199 [pid 5137] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5137] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5138] <... ftruncate resumed>) = 0 [pid 5138] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5138] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5137] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5137] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5137] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5137] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5137] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5137] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5138] <... mmap resumed>) = 0x20000000 [pid 5138] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5137] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5137] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5139 attached [pid 5138] <... futex resumed>) = 0 [pid 5137] <... clone3 resumed> => {parent_tid=[5139]}, 88) = 5139 [pid 5139] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5138] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] rt_sigprocmask(SIG_SETMASK, [], [pid 5139] <... rseq resumed>) = 0 [pid 5137] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5139] set_robust_list(0x7f50e61579a0, 24 [pid 5137] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5139] <... set_robust_list resumed>) = 0 [pid 5137] <... futex resumed>) = 0 [pid 5139] rt_sigprocmask(SIG_SETMASK, [], [pid 5137] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5139] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5139] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5139] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5139] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] <... futex resumed>) = 0 [pid 5138] read(6, [pid 5137] <... futex resumed>) = 1 [pid 5137] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5137] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5137] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5139] <... futex resumed>) = 0 [pid 5137] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5139] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5138] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5138] ???( [pid 5137] <... futex resumed>) = ? [pid 5138] <... ??? resumed>) = ? [pid 5138] +++ killed by SIGBUS +++ [pid 5139] +++ killed by SIGBUS +++ [pid 5137] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5137, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./24", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./24/binderfs", MNT_DETACH|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 umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 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 5140 attached [pid 5140] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5140 [pid 5140] chdir("./25") = 0 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5140] setpgid(0, 0) = 0 [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5140] write(3, "1000", 4) = 4 [pid 5140] close(3) = 0 [pid 5140] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5140] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5140] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5140] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5140] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5140] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5140] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5141 attached [pid 5141] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5140] <... clone3 resumed> => {parent_tid=[5141]}, 88) = 5141 [pid 5141] <... rseq resumed>) = 0 [pid 5140] rt_sigprocmask(SIG_SETMASK, [], [pid 5141] set_robust_list(0x7f50e61789a0, 24 [pid 5140] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5141] <... set_robust_list resumed>) = 0 [pid 5140] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5141] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5140] <... futex resumed>) = 0 [pid 5141] memfd_create("syzkaller", 0 [pid 5140] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5141] <... memfd_create resumed>) = 3 [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5141] 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"..., 1048576) = 1048576 [pid 5141] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5141] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5141] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5141] close(3) = 0 [pid 5141] mkdir("./file0", 0777) = 0 [pid 5141] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5141] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5141] chdir("./file0") = 0 [pid 5141] ioctl(4, LOOP_CLR_FD) = 0 [pid 5141] close(4) = 0 [pid 5141] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 90.645248][ T5141] loop0: detected capacity change from 0 to 2048 [ 90.666600][ T5141] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 90.678722][ T5141] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5141] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5141] <... futex resumed>) = 0 [pid 5140] <... futex resumed>) = 1 [pid 5140] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5141] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5141] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5141] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5141] <... open resumed>) = 5 [pid 5141] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5140] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5141] <... futex resumed>) = 0 [pid 5140] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5141] ftruncate(5, 33587199 [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5141] <... ftruncate resumed>) = 0 [pid 5141] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5141] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5141] <... futex resumed>) = 0 [pid 5140] <... futex resumed>) = 1 [pid 5141] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5140] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5140] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5140] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5140] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5140] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5141] <... mmap resumed>) = 0x20000000 ./strace-static-x86_64: Process 5142 attached [pid 5141] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5142] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5141] <... futex resumed>) = 0 [pid 5140] <... clone3 resumed> => {parent_tid=[5142]}, 88) = 5142 [pid 5142] <... rseq resumed>) = 0 [pid 5141] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5140] rt_sigprocmask(SIG_SETMASK, [], [pid 5142] set_robust_list(0x7f50e61579a0, 24 [pid 5140] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5142] <... set_robust_list resumed>) = 0 [pid 5140] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5142] rt_sigprocmask(SIG_SETMASK, [], [pid 5140] <... futex resumed>) = 0 [pid 5142] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5140] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5142] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5142] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5142] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5141] <... futex resumed>) = 0 [pid 5140] <... futex resumed>) = 1 [pid 5140] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5141] read(6, [pid 5140] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5140] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5140] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5142] <... futex resumed>) = 0 [pid 5140] <... futex resumed>) = 1 [pid 5140] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5142] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5141] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5141] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5141] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5140] <... futex resumed>) = ? [pid 5142] +++ killed by SIGBUS +++ [pid 5141] <... futex resumed>) = ? [pid 5141] +++ killed by SIGBUS +++ [pid 5140] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5140, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./25", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./25/binderfs", MNT_DETACH|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 umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 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 5143 attached , child_tidptr=0x55555720b690) = 5143 [pid 5143] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5143] chdir("./26") = 0 [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5143] setpgid(0, 0) = 0 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5143] write(3, "1000", 4) = 4 [pid 5143] close(3) = 0 [pid 5143] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5143] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5143] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5143] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5143] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5143] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5143] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5143] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5144 attached => {parent_tid=[5144]}, 88) = 5144 [pid 5143] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5144] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5143] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] set_robust_list(0x7f50e61789a0, 24 [pid 5143] <... futex resumed>) = 0 [pid 5144] <... set_robust_list resumed>) = 0 [pid 5143] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5144] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5144] memfd_create("syzkaller", 0) = 3 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5144] 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"..., 1048576) = 1048576 [pid 5144] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5144] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5144] close(3) = 0 [pid 5144] mkdir("./file0", 0777) = 0 [pid 5144] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5144] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5144] chdir("./file0") = 0 [pid 5144] ioctl(4, LOOP_CLR_FD) = 0 [pid 5144] close(4) = 0 [ 91.393402][ T5144] loop0: detected capacity change from 0 to 2048 [ 91.409110][ T5144] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 91.421382][ T5144] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5144] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5143] <... futex resumed>) = 0 [pid 5144] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5143] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5144] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5143] <... futex resumed>) = 0 [pid 5143] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5144] <... open resumed>) = 4 [pid 5144] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5143] <... futex resumed>) = 0 [pid 5144] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5143] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] <... open resumed>) = 5 [pid 5143] <... futex resumed>) = 0 [pid 5144] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5143] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5144] <... futex resumed>) = 0 [pid 5143] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5144] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5143] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5143] <... futex resumed>) = 0 [pid 5144] ftruncate(5, 33587199 [pid 5143] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5144] <... ftruncate resumed>) = 0 [pid 5144] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5143] <... futex resumed>) = 0 [pid 5144] <... futex resumed>) = 1 [pid 5143] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5143] <... futex resumed>) = 0 [pid 5143] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5143] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5143] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5143] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5143] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5144] <... mmap resumed>) = 0x20000000 [pid 5143] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5145 attached [pid 5145] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5143] <... clone3 resumed> => {parent_tid=[5145]}, 88) = 5145 [pid 5145] <... rseq resumed>) = 0 [pid 5143] rt_sigprocmask(SIG_SETMASK, [], [pid 5145] set_robust_list(0x7f50e61579a0, 24 [pid 5143] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5145] <... set_robust_list resumed>) = 0 [pid 5143] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5145] rt_sigprocmask(SIG_SETMASK, [], [pid 5144] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5145] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5144] <... futex resumed>) = 0 [pid 5143] <... futex resumed>) = 0 [pid 5144] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5143] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5145] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5145] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5143] <... futex resumed>) = 0 [pid 5143] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5145] <... futex resumed>) = 1 [pid 5144] <... futex resumed>) = 0 [pid 5143] <... futex resumed>) = 1 [pid 5145] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5144] read(6, [pid 5143] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5143] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5143] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5145] <... futex resumed>) = 0 [pid 5145] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5144] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5144] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5144] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5143] <... futex resumed>) = ? [pid 5145] +++ killed by SIGBUS +++ [pid 5144] +++ killed by SIGBUS +++ [pid 5143] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5143, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=27 /* 0.27 s */} --- umount2("./26", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./26/binderfs", MNT_DETACH|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 umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./26") = 0 mkdir("./27", 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 5146 attached , child_tidptr=0x55555720b690) = 5146 [pid 5146] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5146] chdir("./27") = 0 [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5146] setpgid(0, 0) = 0 [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5146] write(3, "1000", 4) = 4 [pid 5146] close(3) = 0 [pid 5146] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5146] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5146] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5146] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5146] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5146] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5147 attached [pid 5147] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5146] <... clone3 resumed> => {parent_tid=[5147]}, 88) = 5147 [pid 5147] set_robust_list(0x7f50e61789a0, 24 [pid 5146] rt_sigprocmask(SIG_SETMASK, [], [pid 5147] <... set_robust_list resumed>) = 0 [pid 5146] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5147] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5146] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] memfd_create("syzkaller", 0 [pid 5146] <... futex resumed>) = 0 [pid 5147] <... memfd_create resumed>) = 3 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5146] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5147] 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"..., 1048576) = 1048576 [pid 5147] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5147] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5147] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5147] close(3) = 0 [pid 5147] mkdir("./file0", 0777) = 0 [pid 5147] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5147] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5147] chdir("./file0") = 0 [pid 5147] ioctl(4, LOOP_CLR_FD) = 0 [pid 5147] close(4) = 0 [pid 5147] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5146] <... futex resumed>) = 0 [pid 5147] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5146] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] <... futex resumed>) = 0 [pid 5146] <... futex resumed>) = 1 [pid 5147] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5146] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5147] <... open resumed>) = 4 [ 92.037089][ T5147] loop0: detected capacity change from 0 to 2048 [ 92.052632][ T5147] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 92.064922][ T5147] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5147] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5146] <... futex resumed>) = 0 [pid 5147] <... futex resumed>) = 1 [pid 5146] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5146] <... futex resumed>) = 0 [pid 5147] <... open resumed>) = 5 [pid 5146] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5147] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5146] <... futex resumed>) = 0 [pid 5147] <... futex resumed>) = 1 [pid 5146] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] ftruncate(5, 33587199 [pid 5146] <... futex resumed>) = 0 [pid 5146] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5147] <... ftruncate resumed>) = 0 [pid 5147] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5146] <... futex resumed>) = 0 [pid 5147] <... futex resumed>) = 1 [pid 5146] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5146] <... futex resumed>) = 0 [pid 5146] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5146] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5146] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5147] <... mmap resumed>) = 0x20000000 [pid 5146] <... mprotect resumed>) = 0 [pid 5146] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5147] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5147] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5146] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5148 attached [pid 5148] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5146] <... clone3 resumed> => {parent_tid=[5148]}, 88) = 5148 [pid 5148] set_robust_list(0x7f50e61579a0, 24 [pid 5146] rt_sigprocmask(SIG_SETMASK, [], [pid 5148] <... set_robust_list resumed>) = 0 [pid 5146] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5148] rt_sigprocmask(SIG_SETMASK, [], [pid 5146] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5148] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5146] <... futex resumed>) = 0 [pid 5146] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5148] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5148] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5146] <... futex resumed>) = 0 [pid 5148] <... futex resumed>) = 1 [pid 5146] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5148] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5147] <... futex resumed>) = 0 [pid 5146] <... futex resumed>) = 1 [pid 5147] read(6, [pid 5146] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5146] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5148] <... futex resumed>) = 0 [pid 5146] <... futex resumed>) = 1 [pid 5146] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5148] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20077000} --- [pid 5147] <... read resumed>) = ? [pid 5146] <... futex resumed>) = ? [pid 5148] +++ killed by SIGBUS +++ [pid 5147] +++ killed by SIGBUS +++ [pid 5146] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5146, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=29 /* 0.29 s */} --- umount2("./27", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./27/binderfs", MNT_DETACH|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 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 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 5149 attached [pid 5149] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5149 [pid 5149] <... set_robust_list resumed>) = 0 [pid 5149] chdir("./28") = 0 [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5149] setpgid(0, 0) = 0 [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5149] write(3, "1000", 4) = 4 [pid 5149] close(3) = 0 [pid 5149] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5149] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5149] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5149] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5149] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5149] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5149] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5149] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5150 attached [pid 5150] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5149] <... clone3 resumed> => {parent_tid=[5150]}, 88) = 5150 [pid 5150] <... rseq resumed>) = 0 [pid 5150] set_robust_list(0x7f50e61789a0, 24 [pid 5149] rt_sigprocmask(SIG_SETMASK, [], [pid 5150] <... set_robust_list resumed>) = 0 [pid 5149] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5150] rt_sigprocmask(SIG_SETMASK, [], [pid 5149] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5150] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5149] <... futex resumed>) = 0 [pid 5150] memfd_create("syzkaller", 0 [pid 5149] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5150] <... memfd_create resumed>) = 3 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5150] 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"..., 1048576) = 1048576 [pid 5150] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5150] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5150] close(3) = 0 [pid 5150] mkdir("./file0", 0777) = 0 [pid 5150] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5150] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5150] chdir("./file0") = 0 [pid 5150] ioctl(4, LOOP_CLR_FD) = 0 [pid 5150] close(4) = 0 [pid 5150] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5150] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5149] <... futex resumed>) = 0 [pid 5149] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5150] <... futex resumed>) = 0 [pid 5149] <... futex resumed>) = 1 [pid 5149] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5150] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [ 92.774316][ T5150] loop0: detected capacity change from 0 to 2048 [ 92.790799][ T5150] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 92.803394][ T5150] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5150] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5149] <... futex resumed>) = 0 [pid 5150] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5149] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5150] <... futex resumed>) = 0 [pid 5149] <... futex resumed>) = 1 [pid 5150] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5149] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5150] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5149] <... futex resumed>) = 0 [pid 5150] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5149] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5150] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5149] <... futex resumed>) = 0 [pid 5150] ftruncate(5, 33587199 [pid 5149] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5150] <... ftruncate resumed>) = 0 [pid 5150] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5149] <... futex resumed>) = 0 [pid 5150] <... futex resumed>) = 1 [pid 5149] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5150] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5149] <... futex resumed>) = 0 [pid 5149] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5149] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5149] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5149] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5149] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5150] <... mmap resumed>) = 0x20000000 [pid 5150] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5149] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5150] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5151 attached [pid 5150] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5151] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5149] <... clone3 resumed> => {parent_tid=[5151]}, 88) = 5151 [pid 5151] <... rseq resumed>) = 0 [pid 5149] rt_sigprocmask(SIG_SETMASK, [], [pid 5151] set_robust_list(0x7f50e61579a0, 24 [pid 5149] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5151] <... set_robust_list resumed>) = 0 [pid 5149] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5151] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5149] <... futex resumed>) = 0 [pid 5149] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5151] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5151] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5149] <... futex resumed>) = 0 [pid 5151] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5149] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5150] <... futex resumed>) = 0 [pid 5149] <... futex resumed>) = 1 [pid 5150] read(6, [pid 5149] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5149] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5151] <... futex resumed>) = 0 [pid 5149] <... futex resumed>) = 1 [pid 5149] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5150] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5151] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5149] <... futex resumed>) = ? [pid 5150] +++ killed by SIGBUS +++ [pid 5151] +++ killed by SIGBUS +++ [pid 5149] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5149, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./28", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./28/binderfs", MNT_DETACH|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 umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5153 attached , child_tidptr=0x55555720b690) = 5153 [pid 5153] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5153] chdir("./29") = 0 [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5153] setpgid(0, 0) = 0 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5153] write(3, "1000", 4) = 4 [pid 5153] close(3) = 0 [pid 5153] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5153] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5153] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5153] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5153] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5153] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5153] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5153] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5154 attached [pid 5154] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5154] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5154] rt_sigprocmask(SIG_SETMASK, [], [pid 5153] <... clone3 resumed> => {parent_tid=[5154]}, 88) = 5154 [pid 5154] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5153] rt_sigprocmask(SIG_SETMASK, [], [pid 5154] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5153] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5154] <... futex resumed>) = 0 [pid 5153] <... futex resumed>) = 1 [pid 5154] memfd_create("syzkaller", 0 [pid 5153] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5154] <... memfd_create resumed>) = 3 [pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5154] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [ 93.551333][ T5154] loop0: detected capacity change from 0 to 2048 [ 93.580696][ T5154] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 93.592920][ T5154] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5154] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5154] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5154] chdir("./file0") = 0 [pid 5154] ioctl(4, LOOP_CLR_FD) = 0 [pid 5154] close(4) = 0 [pid 5154] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5153] <... futex resumed>) = 0 [pid 5154] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5153] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5153] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5154] <... open resumed>) = 4 [pid 5154] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5154] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] <... futex resumed>) = 0 [pid 5153] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5154] <... futex resumed>) = 0 [pid 5153] <... futex resumed>) = 1 [pid 5154] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5153] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5154] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5153] <... futex resumed>) = 0 [pid 5153] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5154] ftruncate(5, 33587199 [pid 5153] <... futex resumed>) = 0 [pid 5153] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5154] <... ftruncate resumed>) = 0 [pid 5154] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5153] <... futex resumed>) = 0 [pid 5154] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5153] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5153] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5153] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5153] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5154] <... mmap resumed>) = 0x20000000 [pid 5153] <... mmap resumed>) = 0x7f50e6137000 [pid 5154] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5154] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5153] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5153] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5155 attached => {parent_tid=[5155]}, 88) = 5155 [pid 5155] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5153] rt_sigprocmask(SIG_SETMASK, [], [pid 5155] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5153] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5155] rt_sigprocmask(SIG_SETMASK, [], [pid 5153] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5155] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5153] <... futex resumed>) = 0 [pid 5153] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5155] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5155] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5153] <... futex resumed>) = 0 [pid 5155] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5154] <... futex resumed>) = 0 [pid 5153] <... futex resumed>) = 1 [pid 5154] read(6, [pid 5153] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5153] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5155] <... futex resumed>) = 0 [pid 5153] <... futex resumed>) = 1 [pid 5153] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5155] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5154] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5153] <... futex resumed>) = ? [pid 5155] +++ killed by SIGBUS +++ [pid 5154] +++ killed by SIGBUS +++ [pid 5153] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5153, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./29", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./29/binderfs", MNT_DETACH|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 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./29") = 0 mkdir("./30", 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 5156 attached , child_tidptr=0x55555720b690) = 5156 [pid 5156] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5156] chdir("./30") = 0 [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5156] setpgid(0, 0) = 0 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5156] write(3, "1000", 4) = 4 [pid 5156] close(3) = 0 [pid 5156] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5156] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5156] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5156] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5156] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5156] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5156] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5157 attached [pid 5157] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5156] <... clone3 resumed> => {parent_tid=[5157]}, 88) = 5157 [pid 5157] set_robust_list(0x7f50e61789a0, 24 [pid 5156] rt_sigprocmask(SIG_SETMASK, [], [pid 5157] <... set_robust_list resumed>) = 0 [pid 5157] rt_sigprocmask(SIG_SETMASK, [], [pid 5156] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5157] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5156] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5157] memfd_create("syzkaller", 0 [pid 5156] <... futex resumed>) = 0 [pid 5156] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5157] <... memfd_create resumed>) = 3 [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5157] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5157] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5157] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5157] chdir("./file0") = 0 [pid 5157] ioctl(4, LOOP_CLR_FD) = 0 [pid 5157] close(4) = 0 [ 94.354077][ T5157] loop0: detected capacity change from 0 to 2048 [ 94.379442][ T5157] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 94.392448][ T5157] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5157] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5156] <... futex resumed>) = 0 [pid 5156] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5157] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5156] <... futex resumed>) = 0 [pid 5157] <... open resumed>) = 4 [pid 5156] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5157] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5157] <... futex resumed>) = 0 [pid 5156] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5157] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5156] <... futex resumed>) = 0 [pid 5156] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5157] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5157] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5156] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5157] ftruncate(5, 33587199 [pid 5156] <... futex resumed>) = 0 [pid 5156] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5157] <... ftruncate resumed>) = 0 [pid 5157] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5156] <... futex resumed>) = 0 [pid 5157] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5156] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5157] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5156] <... futex resumed>) = 0 [pid 5156] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5156] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5156] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5157] <... mmap resumed>) = 0x20000000 [pid 5156] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5157] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5156] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5157] <... futex resumed>) = 0 [pid 5157] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5156] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5158 attached [pid 5158] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5156] <... clone3 resumed> => {parent_tid=[5158]}, 88) = 5158 [pid 5158] set_robust_list(0x7f50e61579a0, 24 [pid 5156] rt_sigprocmask(SIG_SETMASK, [], [pid 5158] <... set_robust_list resumed>) = 0 [pid 5158] rt_sigprocmask(SIG_SETMASK, [], [pid 5156] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5158] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5156] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5156] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5158] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5158] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5156] <... futex resumed>) = 0 [pid 5158] <... futex resumed>) = 1 [pid 5156] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5158] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5157] <... futex resumed>) = 0 [pid 5157] read(6, [pid 5156] <... futex resumed>) = 1 [pid 5156] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5156] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5158] <... futex resumed>) = 0 [pid 5156] <... futex resumed>) = 1 [pid 5156] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5158] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5157] <... read resumed>) = ? [pid 5156] <... futex resumed>) = ? [pid 5158] +++ killed by SIGBUS +++ [pid 5157] +++ killed by SIGBUS +++ [pid 5156] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5156, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- umount2("./30", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./30/binderfs", MNT_DETACH|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 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./30") = 0 mkdir("./31", 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 5159 attached , child_tidptr=0x55555720b690) = 5159 [pid 5159] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5159] chdir("./31") = 0 [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5159] setpgid(0, 0) = 0 [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5159] write(3, "1000", 4) = 4 [pid 5159] close(3) = 0 [pid 5159] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5159] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5159] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5159] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5159] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5159] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5159] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5160 attached [pid 5160] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5160] set_robust_list(0x7f50e61789a0, 24 [pid 5159] <... clone3 resumed> => {parent_tid=[5160]}, 88) = 5160 [pid 5160] <... set_robust_list resumed>) = 0 [pid 5159] rt_sigprocmask(SIG_SETMASK, [], [pid 5160] rt_sigprocmask(SIG_SETMASK, [], [pid 5159] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5160] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5160] memfd_create("syzkaller", 0 [pid 5159] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5160] <... memfd_create resumed>) = 3 [pid 5159] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5160] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5160] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5160] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5160] chdir("./file0") = 0 [pid 5160] ioctl(4, LOOP_CLR_FD) = 0 [pid 5160] close(4) = 0 [pid 5160] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5159] <... futex resumed>) = 0 [pid 5160] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5159] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5160] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5160] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [ 95.038560][ T5160] loop0: detected capacity change from 0 to 2048 [ 95.056582][ T5160] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 95.069108][ T5160] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5159] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5160] <... open resumed>) = 4 [pid 5160] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5160] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5159] <... futex resumed>) = 0 [pid 5160] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5159] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5160] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5159] <... futex resumed>) = 0 [pid 5160] <... open resumed>) = 5 [pid 5159] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5160] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5159] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5160] <... futex resumed>) = 0 [pid 5159] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5160] ftruncate(5, 33587199 [pid 5159] <... futex resumed>) = 0 [pid 5159] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5160] <... ftruncate resumed>) = 0 [pid 5160] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5160] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5159] <... futex resumed>) = 0 [pid 5160] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5159] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5160] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5159] <... futex resumed>) = 0 [pid 5159] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5159] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5159] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5159] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5159] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5161 attached [pid 5160] <... mmap resumed>) = 0x20000000 [pid 5161] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5160] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5161] <... rseq resumed>) = 0 [pid 5160] <... futex resumed>) = 0 [pid 5161] set_robust_list(0x7f50e61579a0, 24 [pid 5160] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5161] <... set_robust_list resumed>) = 0 [pid 5159] <... clone3 resumed> => {parent_tid=[5161]}, 88) = 5161 [pid 5159] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5159] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5161] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5159] <... futex resumed>) = 0 [pid 5159] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5161] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5161] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5159] <... futex resumed>) = 0 [pid 5161] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5159] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5159] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5160] <... futex resumed>) = 0 [pid 5160] read(6, [pid 5159] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5159] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5161] <... futex resumed>) = 0 [pid 5159] <... futex resumed>) = 1 [pid 5159] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5161] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20077000} --- [pid 5160] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 216960 [pid 5159] <... futex resumed>) = ? [pid 5160] +++ killed by SIGBUS +++ [pid 5161] +++ killed by SIGBUS +++ [pid 5159] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5159, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./31", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./31/binderfs", MNT_DETACH|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 umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 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 5162 attached , child_tidptr=0x55555720b690) = 5162 [pid 5162] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5162] chdir("./32") = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5162] setpgid(0, 0) = 0 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5162] write(3, "1000", 4) = 4 [pid 5162] close(3) = 0 [pid 5162] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5162] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5162] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5162] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5162] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5162] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5162] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5163 attached [pid 5163] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5162] <... clone3 resumed> => {parent_tid=[5163]}, 88) = 5163 [pid 5163] <... rseq resumed>) = 0 [pid 5162] rt_sigprocmask(SIG_SETMASK, [], [pid 5163] set_robust_list(0x7f50e61789a0, 24 [pid 5162] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5163] <... set_robust_list resumed>) = 0 [pid 5162] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5163] rt_sigprocmask(SIG_SETMASK, [], [pid 5162] <... futex resumed>) = 0 [pid 5163] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5162] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5163] memfd_create("syzkaller", 0) = 3 [pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5163] 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"..., 1048576) = 1048576 [pid 5163] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5163] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5163] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5163] close(3) = 0 [pid 5163] mkdir("./file0", 0777) = 0 [pid 5163] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5163] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5163] chdir("./file0") = 0 [pid 5163] ioctl(4, LOOP_CLR_FD) = 0 [pid 5163] close(4) = 0 [pid 5163] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5162] <... futex resumed>) = 0 [pid 5162] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5163] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5162] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5163] <... open resumed>) = 4 [ 95.824331][ T5163] loop0: detected capacity change from 0 to 2048 [ 95.840147][ T5163] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 95.852636][ T5163] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5163] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5162] <... futex resumed>) = 0 [pid 5162] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5163] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5162] <... futex resumed>) = 0 [pid 5163] <... open resumed>) = 5 [pid 5162] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5163] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5163] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5162] <... futex resumed>) = 0 [pid 5162] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5163] <... futex resumed>) = 0 [pid 5162] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5163] ftruncate(5, 33587199) = 0 [pid 5163] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5162] <... futex resumed>) = 0 [pid 5163] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5162] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5163] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5162] <... futex resumed>) = 0 [pid 5163] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5162] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5162] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5162] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5163] <... mmap resumed>) = 0x20000000 [pid 5163] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5162] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5163] <... futex resumed>) = 0 [pid 5163] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5162] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5162] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5164 attached [pid 5164] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5162] <... clone3 resumed> => {parent_tid=[5164]}, 88) = 5164 [pid 5164] <... rseq resumed>) = 0 [pid 5162] rt_sigprocmask(SIG_SETMASK, [], [pid 5164] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5164] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5164] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5162] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5162] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5164] <... futex resumed>) = 0 [pid 5162] <... futex resumed>) = 1 [pid 5162] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5164] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5164] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5162] <... futex resumed>) = 0 [pid 5164] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5162] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5162] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5163] <... futex resumed>) = 0 [pid 5163] read(6, [pid 5162] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5162] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5164] <... futex resumed>) = 0 [pid 5162] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5164] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5163] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5163] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5163] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5163] +++ killed by SIGBUS +++ [pid 5162] <... futex resumed>) = ? [pid 5164] +++ killed by SIGBUS +++ [pid 5162] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5162, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=25 /* 0.25 s */} --- umount2("./32", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./32/binderfs", MNT_DETACH|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 umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5165 attached , child_tidptr=0x55555720b690) = 5165 [pid 5165] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5165] chdir("./33") = 0 [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5165] setpgid(0, 0) = 0 [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5165] write(3, "1000", 4) = 4 [pid 5165] close(3) = 0 [pid 5165] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5165] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5165] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5165] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5165] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5165] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5165] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5166 attached => {parent_tid=[5166]}, 88) = 5166 [pid 5166] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5165] rt_sigprocmask(SIG_SETMASK, [], [pid 5166] set_robust_list(0x7f50e61789a0, 24 [pid 5165] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5166] <... set_robust_list resumed>) = 0 [pid 5166] rt_sigprocmask(SIG_SETMASK, [], [pid 5165] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5166] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5165] <... futex resumed>) = 0 [pid 5166] memfd_create("syzkaller", 0 [pid 5165] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5166] <... memfd_create resumed>) = 3 [pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5166] 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"..., 1048576) = 1048576 [pid 5166] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5166] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5166] close(3) = 0 [pid 5166] mkdir("./file0", 0777) = 0 [pid 5166] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5166] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5166] chdir("./file0") = 0 [pid 5166] ioctl(4, LOOP_CLR_FD) = 0 [pid 5166] close(4) = 0 [pid 5166] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5166] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5165] <... futex resumed>) = 0 [pid 5165] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5166] <... futex resumed>) = 0 [pid 5165] <... futex resumed>) = 1 [pid 5166] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [ 96.467188][ T5166] loop0: detected capacity change from 0 to 2048 [ 96.480761][ T5166] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 96.492893][ T5166] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5165] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5166] <... open resumed>) = 4 [pid 5166] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5165] <... futex resumed>) = 0 [pid 5166] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5165] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5166] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5165] <... futex resumed>) = 0 [pid 5165] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5166] <... open resumed>) = 5 [pid 5166] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5165] <... futex resumed>) = 0 [pid 5165] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5166] <... futex resumed>) = 1 [pid 5165] <... futex resumed>) = 0 [pid 5166] ftruncate(5, 33587199 [pid 5165] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5166] <... ftruncate resumed>) = 0 [pid 5166] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5165] <... futex resumed>) = 0 [pid 5166] <... futex resumed>) = 1 [pid 5165] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5166] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5165] <... futex resumed>) = 0 [pid 5165] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5165] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5165] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5165] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5166] <... mmap resumed>) = 0x20000000 [pid 5166] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5165] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5165] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5167 attached [pid 5167] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5165] <... clone3 resumed> => {parent_tid=[5167]}, 88) = 5167 [pid 5167] <... rseq resumed>) = 0 [pid 5167] set_robust_list(0x7f50e61579a0, 24 [pid 5165] rt_sigprocmask(SIG_SETMASK, [], [pid 5167] <... set_robust_list resumed>) = 0 [pid 5165] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5167] rt_sigprocmask(SIG_SETMASK, [], [pid 5165] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5167] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5165] <... futex resumed>) = 0 [pid 5166] <... futex resumed>) = 0 [pid 5165] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5166] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5167] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5167] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5167] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5165] <... futex resumed>) = 0 [pid 5165] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5166] <... futex resumed>) = 0 [pid 5165] <... futex resumed>) = 1 [pid 5166] read(6, [pid 5165] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5165] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5167] <... futex resumed>) = 0 [pid 5165] <... futex resumed>) = 1 [pid 5165] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5166] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5167] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5165] <... futex resumed>) = ? [pid 5167] +++ killed by SIGBUS +++ [pid 5166] +++ killed by SIGBUS +++ [pid 5165] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5165, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=27 /* 0.27 s */} --- umount2("./33", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./33/binderfs", MNT_DETACH|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 umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5168 attached , child_tidptr=0x55555720b690) = 5168 [pid 5168] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5168] chdir("./34") = 0 [pid 5168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5168] setpgid(0, 0) = 0 [pid 5168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5168] write(3, "1000", 4) = 4 [pid 5168] close(3) = 0 [pid 5168] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5168] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5168] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5168] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5168] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5168] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5168] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5169 attached [pid 5169] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5168] <... clone3 resumed> => {parent_tid=[5169]}, 88) = 5169 [pid 5169] set_robust_list(0x7f50e61789a0, 24 [pid 5168] rt_sigprocmask(SIG_SETMASK, [], [pid 5169] <... set_robust_list resumed>) = 0 [pid 5168] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5169] rt_sigprocmask(SIG_SETMASK, [], [pid 5168] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5169] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5168] <... futex resumed>) = 0 [pid 5169] memfd_create("syzkaller", 0 [pid 5168] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5169] <... memfd_create resumed>) = 3 [pid 5169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5169] 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"..., 1048576) = 1048576 [pid 5169] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5169] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5169] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5169] close(3) = 0 [pid 5169] mkdir("./file0", 0777) = 0 [pid 5169] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5169] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5169] chdir("./file0") = 0 [pid 5169] ioctl(4, LOOP_CLR_FD) = 0 [pid 5169] close(4) = 0 [pid 5169] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5168] <... futex resumed>) = 0 [pid 5169] <... futex resumed>) = 1 [pid 5168] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5169] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [ 97.295820][ T5169] loop0: detected capacity change from 0 to 2048 [ 97.320815][ T5169] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 97.333225][ T5169] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5168] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5169] <... open resumed>) = 4 [pid 5169] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5168] <... futex resumed>) = 0 [pid 5169] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5169] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5168] <... futex resumed>) = 0 [pid 5169] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5168] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5169] <... open resumed>) = 5 [pid 5169] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5168] <... futex resumed>) = 0 [pid 5169] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5169] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5168] <... futex resumed>) = 0 [pid 5168] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5169] ftruncate(5, 33587199) = 0 [pid 5169] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5168] <... futex resumed>) = 0 [pid 5169] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5169] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5168] <... futex resumed>) = 0 [pid 5169] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5168] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5168] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5169] <... mmap resumed>) = 0x20000000 [pid 5169] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5168] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5169] <... futex resumed>) = 0 [pid 5169] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] <... mprotect resumed>) = 0 [pid 5168] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5168] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5170 attached [pid 5170] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5168] <... clone3 resumed> => {parent_tid=[5170]}, 88) = 5170 [pid 5170] <... rseq resumed>) = 0 [pid 5170] set_robust_list(0x7f50e61579a0, 24 [pid 5168] rt_sigprocmask(SIG_SETMASK, [], [pid 5170] <... set_robust_list resumed>) = 0 [pid 5168] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5168] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5170] rt_sigprocmask(SIG_SETMASK, [], [pid 5168] <... futex resumed>) = 0 [pid 5170] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5168] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5170] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5170] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5170] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] <... futex resumed>) = 0 [pid 5168] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5169] <... futex resumed>) = 0 [pid 5168] <... futex resumed>) = 1 [pid 5169] read(6, [pid 5168] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5168] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5170] <... futex resumed>) = 0 [pid 5168] <... futex resumed>) = 1 [pid 5168] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5170] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5169] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5168] <... futex resumed>) = ? [pid 5170] +++ killed by SIGBUS +++ [pid 5169] +++ killed by SIGBUS +++ [pid 5168] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5168, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./34", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./34/binderfs", MNT_DETACH|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 umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5171 attached , child_tidptr=0x55555720b690) = 5171 [pid 5171] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5171] chdir("./35") = 0 [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5171] setpgid(0, 0) = 0 [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5171] write(3, "1000", 4) = 4 [pid 5171] close(3) = 0 [pid 5171] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5171] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5171] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5171] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5171] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5171] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5171] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5171] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5172 attached [pid 5172] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5171] <... clone3 resumed> => {parent_tid=[5172]}, 88) = 5172 [pid 5172] set_robust_list(0x7f50e61789a0, 24 [pid 5171] rt_sigprocmask(SIG_SETMASK, [], [pid 5172] <... set_robust_list resumed>) = 0 [pid 5171] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5172] rt_sigprocmask(SIG_SETMASK, [], [pid 5171] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5172] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5172] memfd_create("syzkaller", 0 [pid 5171] <... futex resumed>) = 0 [pid 5171] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5172] <... memfd_create resumed>) = 3 [pid 5172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5172] 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"..., 1048576) = 1048576 [pid 5172] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5172] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5172] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5172] close(3) = 0 [pid 5172] mkdir("./file0", 0777) = 0 [pid 5172] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5172] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5172] chdir("./file0") = 0 [pid 5172] ioctl(4, LOOP_CLR_FD) = 0 [pid 5172] close(4) = 0 [pid 5172] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5172] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5171] <... futex resumed>) = 0 [pid 5171] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5171] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5172] <... futex resumed>) = 0 [pid 5172] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5172] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5171] <... futex resumed>) = 0 [pid 5171] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5172] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5171] <... futex resumed>) = 0 [pid 5172] <... open resumed>) = 5 [pid 5171] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5172] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5172] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5171] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5172] <... futex resumed>) = 0 [pid 5171] <... futex resumed>) = 1 [pid 5172] ftruncate(5, 33587199 [pid 5171] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5172] <... ftruncate resumed>) = 0 [pid 5172] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5171] <... futex resumed>) = 0 [ 98.090281][ T5172] loop0: detected capacity change from 0 to 2048 [ 98.101372][ T5172] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 98.113365][ T5172] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5172] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5171] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5172] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5171] <... futex resumed>) = 0 [pid 5172] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5171] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5171] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5171] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5171] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5172] <... mmap resumed>) = 0x20000000 [pid 5172] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5171] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5172] <... futex resumed>) = 0 [pid 5171] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5172] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5171] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} => {parent_tid=[5173]}, 88) = 5173 ./strace-static-x86_64: Process 5173 attached [pid 5173] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5171] rt_sigprocmask(SIG_SETMASK, [], [pid 5173] <... rseq resumed>) = 0 [pid 5171] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5173] set_robust_list(0x7f50e61579a0, 24 [pid 5171] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5173] <... set_robust_list resumed>) = 0 [pid 5171] <... futex resumed>) = 0 [pid 5173] rt_sigprocmask(SIG_SETMASK, [], [pid 5171] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5173] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5173] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5173] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5171] <... futex resumed>) = 0 [pid 5173] <... futex resumed>) = 1 [pid 5171] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5173] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5172] <... futex resumed>) = 0 [pid 5171] <... futex resumed>) = 1 [pid 5171] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5172] read(6, [pid 5171] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5171] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5173] <... futex resumed>) = 0 [pid 5171] <... futex resumed>) = 1 [pid 5171] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5173] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5172] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5171] <... futex resumed>) = ? [pid 5173] +++ killed by SIGBUS +++ [pid 5172] +++ killed by SIGBUS +++ [pid 5171] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5171, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./35", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./35/binderfs", MNT_DETACH|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 umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5174 attached , child_tidptr=0x55555720b690) = 5174 [pid 5174] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5174] chdir("./36") = 0 [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5174] setpgid(0, 0) = 0 [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5174] write(3, "1000", 4) = 4 [pid 5174] close(3) = 0 [pid 5174] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5174] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5174] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5174] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5174] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5174] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5174] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5175 attached [pid 5175] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5174] <... clone3 resumed> => {parent_tid=[5175]}, 88) = 5175 [pid 5175] set_robust_list(0x7f50e61789a0, 24 [pid 5174] rt_sigprocmask(SIG_SETMASK, [], [pid 5175] <... set_robust_list resumed>) = 0 [pid 5174] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5175] rt_sigprocmask(SIG_SETMASK, [], [pid 5174] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5175] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5175] memfd_create("syzkaller", 0 [pid 5174] <... futex resumed>) = 0 [pid 5174] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5175] <... memfd_create resumed>) = 3 [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5175] 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"..., 1048576) = 1048576 [pid 5175] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5175] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5175] close(3) = 0 [pid 5175] mkdir("./file0", 0777) = 0 [pid 5175] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5175] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5175] chdir("./file0") = 0 [pid 5175] ioctl(4, LOOP_CLR_FD) = 0 [pid 5175] close(4) = 0 [pid 5175] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 98.769944][ T5175] loop0: detected capacity change from 0 to 2048 [ 98.795769][ T5175] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 98.807758][ T5175] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5175] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5174] <... futex resumed>) = 0 [pid 5174] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5174] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5175] <... futex resumed>) = 0 [pid 5175] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5175] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5174] <... futex resumed>) = 0 [pid 5174] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5175] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5174] <... futex resumed>) = 0 [pid 5174] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5175] <... open resumed>) = 5 [pid 5175] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5174] <... futex resumed>) = 0 [pid 5175] <... futex resumed>) = 1 [pid 5174] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5175] ftruncate(5, 33587199 [pid 5174] <... futex resumed>) = 0 [pid 5175] <... ftruncate resumed>) = 0 [pid 5174] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5175] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5174] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5174] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5174] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = 0 [pid 5175] <... futex resumed>) = 1 [pid 5174] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} [pid 5175] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5174] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5174] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5174] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5174] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5175] <... mmap resumed>) = 0x20000000 [pid 5174] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5175] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5176 attached [pid 5176] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5176] set_robust_list(0x7f50e61579a0, 24 [pid 5174] <... clone3 resumed> => {parent_tid=[5176]}, 88) = 5176 [pid 5176] <... set_robust_list resumed>) = 0 [pid 5174] rt_sigprocmask(SIG_SETMASK, [], [pid 5176] rt_sigprocmask(SIG_SETMASK, [], [pid 5174] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5176] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5174] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5174] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5176] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5176] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5176] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5174] <... futex resumed>) = 0 [pid 5174] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5174] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5175] <... futex resumed>) = 0 [pid 5175] read(6, [pid 5174] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5174] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5176] <... futex resumed>) = 0 [pid 5174] <... futex resumed>) = 1 [pid 5174] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5176] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5175] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5175] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5174] <... futex resumed>) = ? [pid 5176] +++ killed by SIGBUS +++ [pid 5175] +++ killed by SIGBUS +++ [pid 5174] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5174, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./36", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./36/binderfs", MNT_DETACH|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 umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5177 attached [pid 5177] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5177] chdir("./37" [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5177 [pid 5177] <... chdir resumed>) = 0 [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5177] setpgid(0, 0) = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5177] write(3, "1000", 4) = 4 [pid 5177] close(3) = 0 [pid 5177] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5177] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5177] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5177] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5177] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5177] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5177] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5178 attached [pid 5178] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5177] <... clone3 resumed> => {parent_tid=[5178]}, 88) = 5178 [pid 5178] set_robust_list(0x7f50e61789a0, 24 [pid 5177] rt_sigprocmask(SIG_SETMASK, [], [pid 5178] <... set_robust_list resumed>) = 0 [pid 5177] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5178] rt_sigprocmask(SIG_SETMASK, [], [pid 5177] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5178] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5177] <... futex resumed>) = 0 [pid 5178] memfd_create("syzkaller", 0 [pid 5177] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5178] <... memfd_create resumed>) = 3 [pid 5178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5178] 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"..., 1048576) = 1048576 [pid 5178] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5178] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5178] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5178] close(3) = 0 [pid 5178] mkdir("./file0", 0777) = 0 [pid 5178] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5178] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5178] chdir("./file0") = 0 [pid 5178] ioctl(4, LOOP_CLR_FD) = 0 [pid 5178] close(4) = 0 [pid 5178] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5177] <... futex resumed>) = 0 [pid 5178] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5177] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5177] <... futex resumed>) = 0 [pid 5178] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5177] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5178] <... open resumed>) = 4 [pid 5178] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5177] <... futex resumed>) = 0 [pid 5178] <... futex resumed>) = 1 [pid 5177] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5178] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5177] <... futex resumed>) = 0 [pid 5178] <... open resumed>) = 5 [pid 5177] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5178] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5177] <... futex resumed>) = 0 [pid 5177] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5178] <... futex resumed>) = 1 [ 99.627967][ T5178] loop0: detected capacity change from 0 to 2048 [ 99.645841][ T5178] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 99.657990][ T5178] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5178] ftruncate(5, 33587199) = 0 [pid 5178] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5177] <... futex resumed>) = 0 [pid 5177] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5178] <... futex resumed>) = 1 [pid 5178] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5177] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5177] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5177] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5177] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5177] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5179 attached [pid 5179] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5177] <... clone3 resumed> => {parent_tid=[5179]}, 88) = 5179 [pid 5179] <... rseq resumed>) = 0 [pid 5177] rt_sigprocmask(SIG_SETMASK, [], [pid 5179] set_robust_list(0x7f50e61579a0, 24 [pid 5177] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5179] <... set_robust_list resumed>) = 0 [pid 5177] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5179] rt_sigprocmask(SIG_SETMASK, [], [pid 5177] <... futex resumed>) = 0 [pid 5179] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5177] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5179] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5179] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5178] <... mmap resumed>) = 0x20000000 [pid 5179] <... futex resumed>) = 1 [pid 5178] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5177] <... futex resumed>) = 0 [pid 5177] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5179] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5177] <... futex resumed>) = 0 [pid 5177] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5178] <... futex resumed>) = 1 [pid 5178] read(6, [pid 5177] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5177] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5179] <... futex resumed>) = 0 [pid 5177] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5178] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 200576 [pid 5179] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x2007b000} --- [pid 5178] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5178] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5177] <... futex resumed>) = ? [pid 5179] +++ killed by SIGBUS +++ [pid 5178] +++ killed by SIGBUS +++ [pid 5177] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5177, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./37", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./37/binderfs", MNT_DETACH|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 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5180 attached , child_tidptr=0x55555720b690) = 5180 [pid 5180] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5180] chdir("./38") = 0 [pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5180] setpgid(0, 0) = 0 [pid 5180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5180] write(3, "1000", 4) = 4 [pid 5180] close(3) = 0 [pid 5180] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5180] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5180] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5180] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5180] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5180] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5180] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5181 attached [pid 5181] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5180] <... clone3 resumed> => {parent_tid=[5181]}, 88) = 5181 [pid 5181] set_robust_list(0x7f50e61789a0, 24 [pid 5180] rt_sigprocmask(SIG_SETMASK, [], [pid 5181] <... set_robust_list resumed>) = 0 [pid 5180] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5181] rt_sigprocmask(SIG_SETMASK, [], [pid 5180] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5181] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5180] <... futex resumed>) = 0 [pid 5181] memfd_create("syzkaller", 0 [pid 5180] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5181] <... memfd_create resumed>) = 3 [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5181] 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"..., 1048576) = 1048576 [pid 5181] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5181] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5181] close(3) = 0 [pid 5181] mkdir("./file0", 0777) = 0 [pid 5181] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5181] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5181] chdir("./file0") = 0 [pid 5181] ioctl(4, LOOP_CLR_FD) = 0 [pid 5181] close(4) = 0 [pid 5181] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5181] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5180] <... futex resumed>) = 0 [pid 5180] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5180] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5181] <... futex resumed>) = 0 [ 100.293135][ T5181] loop0: detected capacity change from 0 to 2048 [ 100.309216][ T5181] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 100.321878][ T5181] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5181] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5181] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5180] <... futex resumed>) = 0 [pid 5180] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5181] <... futex resumed>) = 1 [pid 5180] <... futex resumed>) = 0 [pid 5181] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5180] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5181] <... open resumed>) = 5 [pid 5181] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5180] <... futex resumed>) = 0 [pid 5181] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5180] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5181] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5180] <... futex resumed>) = 0 [pid 5181] ftruncate(5, 33587199 [pid 5180] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5181] <... ftruncate resumed>) = 0 [pid 5181] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5180] <... futex resumed>) = 0 [pid 5181] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5180] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5181] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5180] <... futex resumed>) = 0 [pid 5180] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5180] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5180] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5180] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5181] <... mmap resumed>) = 0x20000000 [pid 5181] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5180] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5180] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5182 attached [pid 5182] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5182] set_robust_list(0x7f50e61579a0, 24 [pid 5180] <... clone3 resumed> => {parent_tid=[5182]}, 88) = 5182 [pid 5182] <... set_robust_list resumed>) = 0 [pid 5180] rt_sigprocmask(SIG_SETMASK, [], [pid 5182] rt_sigprocmask(SIG_SETMASK, [], [pid 5180] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5182] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5180] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5180] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5181] <... futex resumed>) = 0 [pid 5181] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5182] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5182] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5180] <... futex resumed>) = 0 [pid 5182] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5180] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5180] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5181] <... futex resumed>) = 0 [pid 5181] read(6, [pid 5180] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5180] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5182] <... futex resumed>) = 0 [pid 5180] <... futex resumed>) = 1 [pid 5180] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5182] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20077000} --- [pid 5181] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 216960 [pid 5182] +++ killed by SIGBUS +++ [pid 5181] +++ killed by SIGBUS +++ [pid 5180] <... futex resumed>) = ? [pid 5180] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5180, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- umount2("./38", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./38/binderfs", MNT_DETACH|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 umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5183 attached [pid 5183] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5183] chdir("./39" [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5183 [pid 5183] <... chdir resumed>) = 0 [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5183] setpgid(0, 0) = 0 [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5183] write(3, "1000", 4) = 4 [pid 5183] close(3) = 0 [pid 5183] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5183] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5183] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5183] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5183] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5183] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5183] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5183] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5184 attached [pid 5184] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5183] <... clone3 resumed> => {parent_tid=[5184]}, 88) = 5184 [pid 5184] <... rseq resumed>) = 0 [pid 5183] rt_sigprocmask(SIG_SETMASK, [], [pid 5184] set_robust_list(0x7f50e61789a0, 24 [pid 5183] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5184] <... set_robust_list resumed>) = 0 [pid 5183] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] rt_sigprocmask(SIG_SETMASK, [], [pid 5183] <... futex resumed>) = 0 [pid 5184] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5183] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5184] memfd_create("syzkaller", 0) = 3 [pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5184] 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"..., 1048576) = 1048576 [pid 5184] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5184] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5184] close(3) = 0 [pid 5184] mkdir("./file0", 0777) = 0 [pid 5184] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5184] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5184] chdir("./file0") = 0 [pid 5184] ioctl(4, LOOP_CLR_FD) = 0 [pid 5184] close(4) = 0 [pid 5184] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5183] <... futex resumed>) = 0 [pid 5184] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5183] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5183] <... futex resumed>) = 0 [pid 5184] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5183] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5184] <... open resumed>) = 4 [pid 5184] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5183] <... futex resumed>) = 0 [pid 5184] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5183] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5183] <... futex resumed>) = 0 [pid 5184] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5183] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5184] <... open resumed>) = 5 [pid 5184] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5183] <... futex resumed>) = 0 [pid 5184] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5183] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5183] <... futex resumed>) = 0 [pid 5184] ftruncate(5, 33587199 [ 101.011055][ T5184] loop0: detected capacity change from 0 to 2048 [ 101.026639][ T5184] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 101.038867][ T5184] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5183] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5184] <... ftruncate resumed>) = 0 [pid 5184] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5183] <... futex resumed>) = 0 [pid 5184] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5183] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5183] <... futex resumed>) = 0 [pid 5183] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5183] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5183] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5183] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5184] <... mmap resumed>) = 0x20000000 [pid 5183] <... mprotect resumed>) = 0 [pid 5184] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5184] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5183] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5183] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5185 attached => {parent_tid=[5185]}, 88) = 5185 [pid 5185] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5183] rt_sigprocmask(SIG_SETMASK, [], [pid 5185] <... rseq resumed>) = 0 [pid 5183] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5185] set_robust_list(0x7f50e61579a0, 24 [pid 5183] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5185] <... set_robust_list resumed>) = 0 [pid 5185] rt_sigprocmask(SIG_SETMASK, [], [pid 5183] <... futex resumed>) = 0 [pid 5185] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5183] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5185] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5185] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5183] <... futex resumed>) = 0 [pid 5185] <... futex resumed>) = 1 [pid 5183] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5185] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5184] <... futex resumed>) = 0 [pid 5183] <... futex resumed>) = 1 [pid 5184] read(6, [pid 5183] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5183] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5185] <... futex resumed>) = 0 [pid 5183] <... futex resumed>) = 1 [pid 5183] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5185] memfd_create("syzkaller", 0) = 7 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd37000 [pid 5185] write(7, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5185] munmap(0x7f50ddd37000, 138412032) = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 8 [pid 5185] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 5185] ioctl(8, LOOP_CLR_FD) = 0 [pid 5185] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 5185] close(8) = 0 [pid 5185] close(7) = 0 [pid 5185] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5185] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5183] <... futex resumed>) = 0 [pid 5183] exit_group(0 [pid 5185] <... futex resumed>) = ? [pid 5183] <... exit_group resumed>) = ? [pid 5185] +++ exited with 0 +++ [pid 5184] <... read resumed> ) = ? [pid 5184] +++ exited with 0 +++ [pid 5183] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5183, si_uid=0, si_status=0, si_utime=0, si_stime=67 /* 0.67 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./39", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./39/binderfs", MNT_DETACH|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 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5186 attached , child_tidptr=0x55555720b690) = 5186 [pid 5186] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5186] chdir("./40") = 0 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] setpgid(0, 0) = 0 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5186] write(3, "1000", 4) = 4 [pid 5186] close(3) = 0 [pid 5186] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5186] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5186] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5186] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5186] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5186] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5186] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5187 attached [pid 5187] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5187] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5187] rt_sigprocmask(SIG_SETMASK, [], [pid 5186] <... clone3 resumed> => {parent_tid=[5187]}, 88) = 5187 [pid 5187] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5186] rt_sigprocmask(SIG_SETMASK, [], [pid 5187] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5186] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] <... futex resumed>) = 0 [pid 5186] <... futex resumed>) = 1 [pid 5186] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5187] memfd_create("syzkaller", 0) = 3 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5187] 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"..., 1048576) = 1048576 [pid 5187] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5187] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5187] close(3) = 0 [pid 5187] mkdir("./file0", 0777) = 0 [pid 5187] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5187] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5187] chdir("./file0") = 0 [pid 5187] ioctl(4, LOOP_CLR_FD) = 0 [pid 5187] close(4) = 0 [pid 5187] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5186] <... futex resumed>) = 0 [ 102.297420][ T5187] loop0: detected capacity change from 0 to 2048 [ 102.313558][ T5187] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 102.325881][ T5187] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5186] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5186] <... futex resumed>) = 0 [pid 5186] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5187] <... open resumed>) = 4 [pid 5187] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5186] <... futex resumed>) = 0 [pid 5187] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5187] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5186] <... futex resumed>) = 0 [pid 5187] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5186] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5187] <... futex resumed>) = 0 [pid 5186] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5187] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] <... futex resumed>) = 0 [pid 5186] <... futex resumed>) = 1 [pid 5187] ftruncate(5, 33587199 [pid 5186] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5187] <... ftruncate resumed>) = 0 [pid 5187] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5186] <... futex resumed>) = 0 [pid 5187] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5186] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5186] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5186] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5187] <... mmap resumed>) = 0x20000000 [pid 5186] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5187] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5187] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] <... mprotect resumed>) = 0 [pid 5186] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5186] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5188 attached [pid 5188] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5186] <... clone3 resumed> => {parent_tid=[5188]}, 88) = 5188 [pid 5188] <... rseq resumed>) = 0 [pid 5186] rt_sigprocmask(SIG_SETMASK, [], [pid 5188] set_robust_list(0x7f50e61579a0, 24 [pid 5186] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5188] <... set_robust_list resumed>) = 0 [pid 5186] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5188] rt_sigprocmask(SIG_SETMASK, [], [pid 5186] <... futex resumed>) = 0 [pid 5188] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5186] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5188] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5188] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5186] <... futex resumed>) = 0 [pid 5188] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] <... futex resumed>) = 0 [pid 5186] <... futex resumed>) = 1 [pid 5187] read(6, [pid 5186] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5186] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5188] <... futex resumed>) = 0 [pid 5186] <... futex resumed>) = 1 [pid 5186] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5188] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20070000} --- [pid 5187] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 245632 [pid 5186] <... futex resumed>) = ? [pid 5188] +++ killed by SIGBUS +++ [pid 5187] +++ killed by SIGBUS +++ [pid 5186] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5186, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./40", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./40/binderfs", MNT_DETACH|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 umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5189 attached , child_tidptr=0x55555720b690) = 5189 [pid 5189] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5189] chdir("./41") = 0 [pid 5189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5189] setpgid(0, 0) = 0 [pid 5189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5189] write(3, "1000", 4) = 4 [pid 5189] close(3) = 0 [pid 5189] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5189] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5189] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5189] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5189] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5189] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5189] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5189] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5190 attached [pid 5190] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5189] <... clone3 resumed> => {parent_tid=[5190]}, 88) = 5190 [pid 5190] <... rseq resumed>) = 0 [pid 5190] set_robust_list(0x7f50e61789a0, 24 [pid 5189] rt_sigprocmask(SIG_SETMASK, [], [pid 5190] <... set_robust_list resumed>) = 0 [pid 5189] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5190] rt_sigprocmask(SIG_SETMASK, [], [pid 5189] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5190] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5189] <... futex resumed>) = 0 [pid 5190] memfd_create("syzkaller", 0 [pid 5189] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5190] <... memfd_create resumed>) = 3 [pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5190] 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"..., 1048576) = 1048576 [pid 5190] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5190] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5190] close(3) = 0 [pid 5190] mkdir("./file0", 0777) = 0 [pid 5190] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5190] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5190] chdir("./file0") = 0 [pid 5190] ioctl(4, LOOP_CLR_FD) = 0 [pid 5190] close(4) = 0 [pid 5190] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5189] <... futex resumed>) = 0 [pid 5190] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5189] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5189] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5190] <... open resumed>) = 4 [pid 5190] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5190] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5189] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5190] <... futex resumed>) = 0 [pid 5189] <... futex resumed>) = 1 [pid 5190] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5189] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5190] <... open resumed>) = 5 [ 103.063417][ T5190] loop0: detected capacity change from 0 to 2048 [ 103.079385][ T5190] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 103.091439][ T5190] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5190] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5189] <... futex resumed>) = 0 [pid 5190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5189] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5190] ftruncate(5, 33587199 [pid 5189] <... futex resumed>) = 0 [pid 5189] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5190] <... ftruncate resumed>) = 0 [pid 5190] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5189] <... futex resumed>) = 0 [pid 5189] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5190] <... futex resumed>) = 1 [pid 5189] <... futex resumed>) = 0 [pid 5190] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5189] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5189] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5189] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5189] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5189] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5190] <... mmap resumed>) = 0x20000000 [pid 5189] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5190] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5189] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5190] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5191 attached [pid 5190] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5189] <... clone3 resumed> => {parent_tid=[5191]}, 88) = 5191 [pid 5191] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5189] rt_sigprocmask(SIG_SETMASK, [], [pid 5191] set_robust_list(0x7f50e61579a0, 24 [pid 5189] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5191] <... set_robust_list resumed>) = 0 [pid 5189] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5191] rt_sigprocmask(SIG_SETMASK, [], [pid 5189] <... futex resumed>) = 0 [pid 5191] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5189] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5191] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5191] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5189] <... futex resumed>) = 0 [pid 5191] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5189] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5190] <... futex resumed>) = 0 [pid 5189] <... futex resumed>) = 1 [pid 5190] read(6, [pid 5189] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5189] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5191] <... futex resumed>) = 0 [pid 5189] <... futex resumed>) = 1 [pid 5189] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5191] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5190] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5189] <... futex resumed>) = ? [pid 5191] +++ killed by SIGBUS +++ [pid 5190] +++ killed by SIGBUS +++ [pid 5189] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5189, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- umount2("./41", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./41/binderfs", MNT_DETACH|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 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5192 attached , child_tidptr=0x55555720b690) = 5192 [pid 5192] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5192] chdir("./42") = 0 [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5192] setpgid(0, 0) = 0 [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5192] write(3, "1000", 4) = 4 [pid 5192] close(3) = 0 [pid 5192] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5192] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5192] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5192] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5192] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5192] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5192] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5193 attached [pid 5193] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5192] <... clone3 resumed> => {parent_tid=[5193]}, 88) = 5193 [pid 5193] set_robust_list(0x7f50e61789a0, 24 [pid 5192] rt_sigprocmask(SIG_SETMASK, [], [pid 5193] <... set_robust_list resumed>) = 0 [pid 5192] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5193] rt_sigprocmask(SIG_SETMASK, [], [pid 5192] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5193] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5193] memfd_create("syzkaller", 0 [pid 5192] <... futex resumed>) = 0 [pid 5192] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5193] <... memfd_create resumed>) = 3 [pid 5193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5193] 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"..., 1048576) = 1048576 [pid 5193] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5193] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5193] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5193] close(3) = 0 [pid 5193] mkdir("./file0", 0777) = 0 [ 103.779171][ T5193] loop0: detected capacity change from 0 to 2048 [ 103.815292][ T5193] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [pid 5193] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5193] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5193] chdir("./file0") = 0 [pid 5193] ioctl(4, LOOP_CLR_FD) = 0 [pid 5193] close(4) = 0 [pid 5193] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5192] <... futex resumed>) = 0 [pid 5192] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] <... futex resumed>) = 0 [pid 5192] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5193] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5193] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5192] <... futex resumed>) = 0 [pid 5192] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5193] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5192] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5193] <... open resumed>) = 5 [pid 5193] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5192] <... futex resumed>) = 0 [pid 5193] <... futex resumed>) = 1 [pid 5192] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5193] ftruncate(5, 33587199 [pid 5192] <... futex resumed>) = 0 [pid 5192] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5193] <... ftruncate resumed>) = 0 [ 103.827422][ T5193] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5193] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5192] <... futex resumed>) = 0 [pid 5192] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5193] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5192] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5192] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5192] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5193] <... mmap resumed>) = 0x20000000 [pid 5193] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5192] <... mprotect resumed>) = 0 [pid 5193] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5192] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5192] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5194 attached [pid 5194] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5192] <... clone3 resumed> => {parent_tid=[5194]}, 88) = 5194 [pid 5194] set_robust_list(0x7f50e61579a0, 24 [pid 5192] rt_sigprocmask(SIG_SETMASK, [], [pid 5194] <... set_robust_list resumed>) = 0 [pid 5192] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5194] rt_sigprocmask(SIG_SETMASK, [], [pid 5192] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5194] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5192] <... futex resumed>) = 0 [pid 5192] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5194] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5194] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5192] <... futex resumed>) = 0 [pid 5194] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5192] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5193] <... futex resumed>) = 0 [pid 5193] read(6, [pid 5192] <... futex resumed>) = 1 [pid 5192] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5192] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5194] <... futex resumed>) = 0 [pid 5192] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5194] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5193] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5193] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5193] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5192] <... futex resumed>) = ? [pid 5193] +++ killed by SIGBUS +++ [pid 5194] +++ killed by SIGBUS +++ [pid 5192] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5192, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=27 /* 0.27 s */} --- umount2("./42", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./42/binderfs", MNT_DETACH|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 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5195 attached , child_tidptr=0x55555720b690) = 5195 [pid 5195] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5195] chdir("./43") = 0 [pid 5195] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5195] setpgid(0, 0) = 0 [pid 5195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5195] write(3, "1000", 4) = 4 [pid 5195] close(3) = 0 [pid 5195] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5195] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5195] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5195] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5195] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5195] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5195] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5195] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5196 attached [pid 5196] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5196] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5196] rt_sigprocmask(SIG_SETMASK, [], [pid 5195] <... clone3 resumed> => {parent_tid=[5196]}, 88) = 5196 [pid 5196] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5195] rt_sigprocmask(SIG_SETMASK, [], [pid 5196] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5195] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5195] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] <... futex resumed>) = 0 [pid 5195] <... futex resumed>) = 1 [pid 5196] memfd_create("syzkaller", 0 [pid 5195] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5196] <... memfd_create resumed>) = 3 [pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5196] 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"..., 1048576) = 1048576 [pid 5196] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5196] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5196] close(3) = 0 [pid 5196] mkdir("./file0", 0777) = 0 [pid 5196] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5196] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5196] chdir("./file0") = 0 [pid 5196] ioctl(4, LOOP_CLR_FD) = 0 [ 104.474040][ T5196] loop0: detected capacity change from 0 to 2048 [ 104.484662][ T5196] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 104.496876][ T5196] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5196] close(4) = 0 [pid 5196] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5195] <... futex resumed>) = 0 [pid 5195] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5195] <... futex resumed>) = 0 [pid 5196] <... open resumed>) = 4 [pid 5196] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5195] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5196] <... futex resumed>) = 0 [pid 5196] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5195] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] <... futex resumed>) = 0 [pid 5196] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5195] <... futex resumed>) = 1 [pid 5196] <... open resumed>) = 5 [pid 5196] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5195] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5196] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5195] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] <... futex resumed>) = 0 [pid 5196] ftruncate(5, 33587199) = 0 [pid 5196] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5196] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5195] <... futex resumed>) = 1 [pid 5195] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5195] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] <... futex resumed>) = 0 [pid 5195] <... futex resumed>) = 1 [pid 5196] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5195] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5195] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5195] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5195] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5195] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5196] <... mmap resumed>) = 0x20000000 [pid 5196] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5195] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5196] <... futex resumed>) = 0 [pid 5195] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5196] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5195] <... clone3 resumed> => {parent_tid=[5197]}, 88) = 5197 ./strace-static-x86_64: Process 5197 attached [pid 5197] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5195] rt_sigprocmask(SIG_SETMASK, [], [pid 5197] <... rseq resumed>) = 0 [pid 5195] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5197] set_robust_list(0x7f50e61579a0, 24 [pid 5195] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5197] <... set_robust_list resumed>) = 0 [pid 5195] <... futex resumed>) = 0 [pid 5197] rt_sigprocmask(SIG_SETMASK, [], [pid 5195] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5197] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5197] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5197] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5195] <... futex resumed>) = 0 [pid 5197] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5195] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] <... futex resumed>) = 0 [pid 5195] <... futex resumed>) = 1 [pid 5196] read(6, [pid 5195] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5195] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5197] <... futex resumed>) = 0 [pid 5195] <... futex resumed>) = 1 [pid 5195] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5197] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5196] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5195] <... futex resumed>) = ? [pid 5196] +++ killed by SIGBUS +++ [pid 5197] +++ killed by SIGBUS +++ [pid 5195] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5195, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./43", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./43/binderfs", MNT_DETACH|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 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5198 attached , child_tidptr=0x55555720b690) = 5198 [pid 5198] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5198] chdir("./44") = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5198] setpgid(0, 0) = 0 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5198] write(3, "1000", 4) = 4 [pid 5198] close(3) = 0 [pid 5198] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5198] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5198] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5198] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5198] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5198] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5198] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5199 attached => {parent_tid=[5199]}, 88) = 5199 [pid 5199] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5199] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5199] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5199] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5198] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5198] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5199] <... futex resumed>) = 0 [pid 5199] memfd_create("syzkaller", 0 [pid 5198] <... futex resumed>) = 1 [pid 5198] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5199] <... memfd_create resumed>) = 3 [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5199] 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"..., 1048576) = 1048576 [pid 5199] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5199] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5199] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5199] close(3) = 0 [pid 5199] mkdir("./file0", 0777) = 0 [pid 5199] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5199] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5199] chdir("./file0") = 0 [pid 5199] ioctl(4, LOOP_CLR_FD) = 0 [pid 5199] close(4) = 0 [pid 5199] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5198] <... futex resumed>) = 0 [pid 5199] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5198] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5199] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5198] <... futex resumed>) = 0 [pid 5199] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5198] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5199] <... open resumed>) = 4 [pid 5199] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5198] <... futex resumed>) = 0 [pid 5199] <... futex resumed>) = 1 [pid 5198] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [ 105.241540][ T5199] loop0: detected capacity change from 0 to 2048 [ 105.259991][ T5199] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 105.272352][ T5199] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5199] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5198] <... futex resumed>) = 0 [pid 5198] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5199] <... open resumed>) = 5 [pid 5199] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5198] <... futex resumed>) = 0 [pid 5199] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5198] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5199] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5198] <... futex resumed>) = 0 [pid 5199] ftruncate(5, 33587199 [pid 5198] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5199] <... ftruncate resumed>) = 0 [pid 5199] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5198] <... futex resumed>) = 0 [pid 5198] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5198] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5199] <... futex resumed>) = 1 [pid 5199] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5198] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5198] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5198] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5198] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5198] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5199] <... mmap resumed>) = 0x20000000 [pid 5198] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5198] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5199] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5199] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5200 attached [pid 5200] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5200] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5198] <... clone3 resumed> => {parent_tid=[5200]}, 88) = 5200 [pid 5200] rt_sigprocmask(SIG_SETMASK, [], [pid 5198] rt_sigprocmask(SIG_SETMASK, [], [pid 5200] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5198] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5200] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5198] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5200] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5198] <... futex resumed>) = 0 [pid 5198] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5200] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5200] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5198] <... futex resumed>) = 0 [pid 5200] <... futex resumed>) = 1 [pid 5198] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5200] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5198] <... futex resumed>) = 1 [pid 5199] <... futex resumed>) = 0 [pid 5198] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5199] read(6, [pid 5198] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5198] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5200] <... futex resumed>) = 0 [pid 5198] <... futex resumed>) = 1 [pid 5198] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5200] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5199] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5198] <... futex resumed>) = ? [pid 5200] +++ killed by SIGBUS +++ [pid 5199] +++ killed by SIGBUS +++ [pid 5198] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5198, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./44", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./44/binderfs", MNT_DETACH|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 umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5201 attached , child_tidptr=0x55555720b690) = 5201 [pid 5201] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5201] chdir("./45") = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5201] setpgid(0, 0) = 0 [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5201] write(3, "1000", 4) = 4 [pid 5201] close(3) = 0 [pid 5201] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5201] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5201] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5201] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5201] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5201] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5201] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5201] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5202 attached => {parent_tid=[5202]}, 88) = 5202 [pid 5202] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5201] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5201] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5202] <... rseq resumed>) = 0 [pid 5201] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5202] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5202] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5202] memfd_create("syzkaller", 0) = 3 [pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5202] 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"..., 1048576) = 1048576 [pid 5202] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5202] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5202] close(3) = 0 [pid 5202] mkdir("./file0", 0777) = 0 [pid 5202] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5202] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5202] chdir("./file0") = 0 [pid 5202] ioctl(4, LOOP_CLR_FD) = 0 [pid 5202] close(4) = 0 [pid 5202] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5201] <... futex resumed>) = 0 [pid 5201] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5202] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5201] <... futex resumed>) = 0 [ 105.939529][ T5202] loop0: detected capacity change from 0 to 2048 [ 105.960515][ T5202] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 105.973386][ T5202] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5201] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5202] <... open resumed>) = 4 [pid 5202] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5201] <... futex resumed>) = 0 [pid 5202] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5201] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5201] <... futex resumed>) = 0 [pid 5202] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5201] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5202] <... open resumed>) = 5 [pid 5202] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5202] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5201] <... futex resumed>) = 0 [pid 5201] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5201] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5202] <... futex resumed>) = 0 [pid 5202] ftruncate(5, 33587199) = 0 [pid 5202] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5202] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5201] <... futex resumed>) = 0 [pid 5201] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5202] <... futex resumed>) = 0 [pid 5201] <... futex resumed>) = 1 [pid 5202] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5201] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5201] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5201] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5201] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5202] <... mmap resumed>) = 0x20000000 [pid 5201] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5202] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5201] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5201] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5203 attached [pid 5202] <... futex resumed>) = 0 [pid 5203] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5202] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5203] set_robust_list(0x7f50e61579a0, 24 [pid 5201] <... clone3 resumed> => {parent_tid=[5203]}, 88) = 5203 [pid 5203] <... set_robust_list resumed>) = 0 [pid 5201] rt_sigprocmask(SIG_SETMASK, [], [pid 5203] rt_sigprocmask(SIG_SETMASK, [], [pid 5201] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5203] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5201] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5201] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5203] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5203] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5203] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5201] <... futex resumed>) = 0 [pid 5201] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5202] <... futex resumed>) = 0 [pid 5201] <... futex resumed>) = 1 [pid 5202] read(6, [pid 5201] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5201] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5203] <... futex resumed>) = 0 [pid 5201] <... futex resumed>) = 1 [pid 5201] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5203] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5202] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5202] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = ? [pid 5201] <... futex resumed>) = ? [pid 5202] +++ killed by SIGBUS +++ [pid 5203] +++ killed by SIGBUS +++ [pid 5201] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5201, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./45", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./45/binderfs", MNT_DETACH|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 umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5204 attached , child_tidptr=0x55555720b690) = 5204 [pid 5204] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5204] chdir("./46") = 0 [pid 5204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5204] setpgid(0, 0) = 0 [pid 5204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5204] write(3, "1000", 4) = 4 [pid 5204] close(3) = 0 [pid 5204] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5204] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5204] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5204] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5204] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5204] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5205 attached [pid 5205] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5204] <... clone3 resumed> => {parent_tid=[5205]}, 88) = 5205 [pid 5205] <... rseq resumed>) = 0 [pid 5204] rt_sigprocmask(SIG_SETMASK, [], [pid 5205] set_robust_list(0x7f50e61789a0, 24 [pid 5204] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5205] <... set_robust_list resumed>) = 0 [pid 5204] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5205] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5204] <... futex resumed>) = 0 [pid 5205] memfd_create("syzkaller", 0 [pid 5204] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5205] <... memfd_create resumed>) = 3 [pid 5205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5205] 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"..., 1048576) = 1048576 [pid 5205] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5205] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5205] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5205] close(3) = 0 [pid 5205] mkdir("./file0", 0777) = 0 [pid 5205] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5205] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5205] chdir("./file0") = 0 [pid 5205] ioctl(4, LOOP_CLR_FD) = 0 [pid 5205] close(4) = 0 [pid 5205] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5204] <... futex resumed>) = 0 [pid 5205] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5204] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5205] <... open resumed>) = 4 [pid 5205] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5204] <... futex resumed>) = 0 [pid 5205] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5204] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5205] <... futex resumed>) = 0 [pid 5204] <... futex resumed>) = 1 [pid 5205] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5204] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5205] <... open resumed>) = 5 [ 106.636080][ T5205] loop0: detected capacity change from 0 to 2048 [ 106.651402][ T5205] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 106.663450][ T5205] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5205] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5204] <... futex resumed>) = 0 [pid 5205] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5204] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5205] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5204] <... futex resumed>) = 0 [pid 5205] ftruncate(5, 33587199 [pid 5204] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5205] <... ftruncate resumed>) = 0 [pid 5205] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5204] <... futex resumed>) = 0 [pid 5205] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5204] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5204] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5204] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5204] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5204] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5206 attached [pid 5206] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5206] set_robust_list(0x7f50e61579a0, 24 [pid 5205] <... mmap resumed>) = 0x20000000 [pid 5204] <... clone3 resumed> => {parent_tid=[5206]}, 88) = 5206 [pid 5206] <... set_robust_list resumed>) = 0 [pid 5204] rt_sigprocmask(SIG_SETMASK, [], [pid 5206] rt_sigprocmask(SIG_SETMASK, [], [pid 5204] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5206] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5204] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5206] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5205] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5204] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5206] <... openat resumed>) = 6 [pid 5206] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5205] <... futex resumed>) = 0 [pid 5206] <... futex resumed>) = 1 [pid 5205] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5204] <... futex resumed>) = 0 [pid 5206] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5204] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5205] <... futex resumed>) = 0 [pid 5204] <... futex resumed>) = 1 [pid 5205] read(6, [pid 5204] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5204] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5206] <... futex resumed>) = 0 [pid 5204] <... futex resumed>) = 1 [pid 5204] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5206] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5205] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5204] <... futex resumed>) = ? [pid 5205] +++ killed by SIGBUS +++ [pid 5206] +++ killed by SIGBUS +++ [pid 5204] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5204, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=25 /* 0.25 s */} --- umount2("./46", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./46/binderfs", MNT_DETACH|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 umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5207 attached , child_tidptr=0x55555720b690) = 5207 [pid 5207] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5207] chdir("./47") = 0 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5207] setpgid(0, 0) = 0 [pid 5207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5207] write(3, "1000", 4) = 4 [pid 5207] close(3) = 0 [pid 5207] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5207] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5207] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5207] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5207] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5207] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5207] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5207] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5208 attached [pid 5208] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5207] <... clone3 resumed> => {parent_tid=[5208]}, 88) = 5208 [pid 5208] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5207] rt_sigprocmask(SIG_SETMASK, [], [pid 5208] rt_sigprocmask(SIG_SETMASK, [], [pid 5207] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5208] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5207] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] memfd_create("syzkaller", 0 [pid 5207] <... futex resumed>) = 0 [pid 5207] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5208] <... memfd_create resumed>) = 3 [pid 5208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5208] 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"..., 1048576) = 1048576 [pid 5208] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5208] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5208] close(3) = 0 [pid 5208] mkdir("./file0", 0777) = 0 [pid 5208] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5208] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5208] chdir("./file0") = 0 [ 107.475910][ T5208] loop0: detected capacity change from 0 to 2048 [ 107.502156][ T5208] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 107.514319][ T5208] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5208] ioctl(4, LOOP_CLR_FD) = 0 [pid 5208] close(4) = 0 [pid 5208] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5207] <... futex resumed>) = 0 [pid 5208] <... futex resumed>) = 1 [pid 5207] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5207] <... futex resumed>) = 0 [pid 5207] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5208] <... open resumed>) = 4 [pid 5208] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5207] <... futex resumed>) = 0 [pid 5208] <... futex resumed>) = 1 [pid 5207] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5207] <... futex resumed>) = 0 [pid 5208] <... open resumed>) = 5 [pid 5207] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5208] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5207] <... futex resumed>) = 0 [pid 5207] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] <... futex resumed>) = 1 [pid 5207] <... futex resumed>) = 0 [pid 5207] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5208] ftruncate(5, 33587199) = 0 [pid 5208] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5207] <... futex resumed>) = 0 [pid 5208] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5207] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5207] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5208] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5207] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5207] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5207] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5207] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5208] <... mmap resumed>) = 0x20000000 [pid 5207] <... mprotect resumed>) = 0 [pid 5208] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5207] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5208] <... futex resumed>) = 0 [pid 5207] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5207] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5209 attached [pid 5208] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5207] <... clone3 resumed> => {parent_tid=[5209]}, 88) = 5209 [pid 5209] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5207] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5207] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5207] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5209] <... rseq resumed>) = 0 [pid 5209] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5209] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5209] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5209] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5207] <... futex resumed>) = 0 [pid 5209] <... futex resumed>) = 1 [pid 5207] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5209] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5208] <... futex resumed>) = 0 [pid 5207] <... futex resumed>) = 1 [pid 5208] read(6, [pid 5207] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5207] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5209] <... futex resumed>) = 0 [pid 5207] <... futex resumed>) = 1 [pid 5207] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5209] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20070000} --- [pid 5208] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 245632 [pid 5208] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5208] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5208] +++ killed by SIGBUS +++ [pid 5207] <... futex resumed>) = ? [pid 5209] +++ killed by SIGBUS +++ [pid 5207] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5207, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./47", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./47/binderfs", MNT_DETACH|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 umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5210 attached [pid 5210] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5210 [pid 5210] <... set_robust_list resumed>) = 0 [pid 5210] chdir("./48") = 0 [pid 5210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5210] setpgid(0, 0) = 0 [pid 5210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5210] write(3, "1000", 4) = 4 [pid 5210] close(3) = 0 [pid 5210] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5210] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5210] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5210] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5210] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5210] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5210] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5211 attached => {parent_tid=[5211]}, 88) = 5211 [pid 5210] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5210] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5211] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5210] <... futex resumed>) = 0 [pid 5211] <... rseq resumed>) = 0 [pid 5210] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5211] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5211] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5211] memfd_create("syzkaller", 0) = 3 [pid 5211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5211] 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"..., 1048576) = 1048576 [pid 5211] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5211] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5211] close(3) = 0 [pid 5211] mkdir("./file0", 0777) = 0 [pid 5211] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5211] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5211] chdir("./file0") = 0 [pid 5211] ioctl(4, LOOP_CLR_FD) = 0 [pid 5211] close(4) = 0 [pid 5211] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5210] <... futex resumed>) = 0 [pid 5211] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5210] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5211] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5211] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5210] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5211] <... open resumed>) = 4 [ 108.194274][ T5211] loop0: detected capacity change from 0 to 2048 [ 108.210515][ T5211] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 108.222985][ T5211] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5211] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5210] <... futex resumed>) = 0 [pid 5211] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5210] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5211] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5210] <... futex resumed>) = 0 [pid 5210] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5211] <... open resumed>) = 5 [pid 5211] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5211] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5210] <... futex resumed>) = 0 [pid 5210] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5211] <... futex resumed>) = 0 [pid 5210] <... futex resumed>) = 1 [pid 5211] ftruncate(5, 33587199 [pid 5210] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5211] <... ftruncate resumed>) = 0 [pid 5211] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5211] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5210] <... futex resumed>) = 0 [pid 5210] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5211] <... futex resumed>) = 0 [pid 5210] <... futex resumed>) = 1 [pid 5211] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5210] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5210] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5210] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5210] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5211] <... mmap resumed>) = 0x20000000 [pid 5210] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5211] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5212 attached [pid 5212] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5210] <... clone3 resumed> => {parent_tid=[5212]}, 88) = 5212 [pid 5212] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5210] rt_sigprocmask(SIG_SETMASK, [], [pid 5212] rt_sigprocmask(SIG_SETMASK, [], [pid 5210] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5212] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5210] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5210] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5211] <... futex resumed>) = 0 [pid 5211] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5212] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5212] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5212] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5210] <... futex resumed>) = 0 [pid 5210] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5210] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5211] <... futex resumed>) = 0 [pid 5211] read(6, [pid 5210] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5210] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5212] <... futex resumed>) = 0 [pid 5210] <... futex resumed>) = 1 [pid 5210] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5212] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5211] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5211] ???( [pid 5210] <... futex resumed>) = ? [pid 5211] <... ??? resumed>) = ? [pid 5211] +++ killed by SIGBUS +++ [pid 5212] +++ killed by SIGBUS +++ [pid 5210] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5210, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./48", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./48/binderfs", MNT_DETACH|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 umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5213 attached , child_tidptr=0x55555720b690) = 5213 [pid 5213] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5213] chdir("./49") = 0 [pid 5213] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5213] setpgid(0, 0) = 0 [pid 5213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5213] write(3, "1000", 4) = 4 [pid 5213] close(3) = 0 [pid 5213] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5213] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5213] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5213] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5213] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5213] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5213] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5213] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5214 attached => {parent_tid=[5214]}, 88) = 5214 [pid 5213] rt_sigprocmask(SIG_SETMASK, [], [pid 5214] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5213] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5214] <... rseq resumed>) = 0 [pid 5214] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5214] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5214] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5213] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5214] <... futex resumed>) = 0 [pid 5214] memfd_create("syzkaller", 0 [pid 5213] <... futex resumed>) = 1 [pid 5213] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5214] <... memfd_create resumed>) = 3 [pid 5214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5214] 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"..., 1048576) = 1048576 [pid 5214] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5214] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5214] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5214] close(3) = 0 [pid 5214] mkdir("./file0", 0777) = 0 [pid 5214] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5214] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5214] chdir("./file0") = 0 [pid 5214] ioctl(4, LOOP_CLR_FD) = 0 [pid 5214] close(4) = 0 [pid 5214] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5213] <... futex resumed>) = 0 [pid 5214] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5213] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5214] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5213] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5214] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5214] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5213] <... futex resumed>) = 0 [pid 5214] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5213] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5214] <... open resumed>) = 5 [pid 5213] <... futex resumed>) = 0 [pid 5213] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5214] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5213] <... futex resumed>) = 0 [pid 5214] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5213] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5214] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5213] <... futex resumed>) = 0 [pid 5214] ftruncate(5, 33587199 [pid 5213] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5214] <... ftruncate resumed>) = 0 [ 108.975430][ T5214] loop0: detected capacity change from 0 to 2048 [ 108.990056][ T5214] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 109.002396][ T5214] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5214] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5213] <... futex resumed>) = 0 [pid 5214] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5213] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5214] <... futex resumed>) = 0 [pid 5213] <... futex resumed>) = 1 [pid 5214] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5213] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5213] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5213] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5213] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5214] <... mmap resumed>) = 0x20000000 [pid 5213] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5214] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5213] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5215 attached [pid 5214] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5215] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5213] <... clone3 resumed> => {parent_tid=[5215]}, 88) = 5215 [pid 5213] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5213] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5215] <... rseq resumed>) = 0 [pid 5215] set_robust_list(0x7f50e61579a0, 24 [pid 5213] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5215] <... set_robust_list resumed>) = 0 [pid 5215] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5215] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5215] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5213] <... futex resumed>) = 0 [pid 5215] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5213] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5214] <... futex resumed>) = 0 [pid 5213] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5214] read(6, [pid 5213] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5213] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5215] <... futex resumed>) = 0 [pid 5213] <... futex resumed>) = 1 [pid 5213] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5215] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5214] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5214] +++ killed by SIGBUS +++ [pid 5213] <... futex resumed>) = ? [pid 5215] +++ killed by SIGBUS +++ [pid 5213] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5213, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=28 /* 0.28 s */} --- umount2("./49", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./49/binderfs", MNT_DETACH|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 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5216 attached , child_tidptr=0x55555720b690) = 5216 [pid 5216] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5216] chdir("./50") = 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] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5216] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5216] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5216] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5216] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5216] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5217 attached => {parent_tid=[5217]}, 88) = 5217 [pid 5217] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5217] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5217] rt_sigprocmask(SIG_SETMASK, [], [pid 5216] rt_sigprocmask(SIG_SETMASK, [], [pid 5217] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5216] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5217] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5216] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5216] <... futex resumed>) = 0 [pid 5216] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5217] memfd_create("syzkaller", 0) = 3 [pid 5217] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5217] 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"..., 1048576) = 1048576 [pid 5217] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5217] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5217] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5217] close(3) = 0 [pid 5217] mkdir("./file0", 0777) = 0 [pid 5217] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5217] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5217] chdir("./file0") = 0 [pid 5217] ioctl(4, LOOP_CLR_FD) = 0 [pid 5217] close(4) = 0 [pid 5217] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5216] <... futex resumed>) = 0 [pid 5217] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5216] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 109.673569][ T5217] loop0: detected capacity change from 0 to 2048 [ 109.689476][ T5217] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 109.701466][ T5217] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5216] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5217] <... open resumed>) = 4 [pid 5217] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5216] <... futex resumed>) = 0 [pid 5216] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5217] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5216] <... futex resumed>) = 0 [pid 5217] <... open resumed>) = 5 [pid 5217] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5216] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5217] <... futex resumed>) = 0 [pid 5217] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5216] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5216] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5217] <... futex resumed>) = 0 [pid 5216] <... futex resumed>) = 1 [pid 5217] ftruncate(5, 33587199 [pid 5216] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5217] <... ftruncate resumed>) = 0 [pid 5217] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5216] <... futex resumed>) = 0 [pid 5217] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5216] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5217] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5216] <... futex resumed>) = 0 [pid 5216] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5216] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5216] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5216] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5217] <... mmap resumed>) = 0x20000000 [pid 5217] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5216] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5217] <... futex resumed>) = 0 [pid 5216] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5217] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5219 attached [pid 5216] <... clone3 resumed> => {parent_tid=[5219]}, 88) = 5219 [pid 5216] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5219] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5216] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5219] <... rseq resumed>) = 0 [pid 5219] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5219] rt_sigprocmask(SIG_SETMASK, [], [pid 5216] <... futex resumed>) = 0 [pid 5219] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5216] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5219] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5219] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5216] <... futex resumed>) = 0 [pid 5219] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5216] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5217] <... futex resumed>) = 0 [pid 5216] <... futex resumed>) = 1 [pid 5217] read(6, [pid 5216] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5216] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5219] <... futex resumed>) = 0 [pid 5216] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5219] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20077000} --- [pid 5217] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 216960 [pid 5217] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5217] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5216] <... futex resumed>) = ? [pid 5219] +++ killed by SIGBUS +++ [pid 5217] +++ killed by SIGBUS +++ [pid 5216] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5216, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./50", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./50/binderfs", MNT_DETACH|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 umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5222 attached , child_tidptr=0x55555720b690) = 5222 [pid 5222] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5222] chdir("./51") = 0 [pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5222] setpgid(0, 0) = 0 [pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5222] write(3, "1000", 4) = 4 [pid 5222] close(3) = 0 [pid 5222] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5222] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5222] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5222] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5222] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5222] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5222] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5222] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5223 attached [pid 5223] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5222] <... clone3 resumed> => {parent_tid=[5223]}, 88) = 5223 [pid 5223] <... rseq resumed>) = 0 [pid 5223] set_robust_list(0x7f50e61789a0, 24 [pid 5222] rt_sigprocmask(SIG_SETMASK, [], [pid 5223] <... set_robust_list resumed>) = 0 [pid 5222] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5223] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5222] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] memfd_create("syzkaller", 0 [pid 5222] <... futex resumed>) = 0 [pid 5222] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5223] <... memfd_create resumed>) = 3 [pid 5223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5223] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5223] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5223] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5223] chdir("./file0") = 0 [pid 5223] ioctl(4, LOOP_CLR_FD) = 0 [pid 5223] close(4) = 0 [ 110.478854][ T5223] loop0: detected capacity change from 0 to 2048 [ 110.505828][ T5223] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 110.517739][ T5223] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5223] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5222] <... futex resumed>) = 0 [pid 5222] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5222] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5223] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5223] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5223] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5222] <... futex resumed>) = 0 [pid 5222] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] <... futex resumed>) = 0 [pid 5222] <... futex resumed>) = 1 [pid 5223] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5222] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5223] <... open resumed>) = 5 [pid 5223] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5222] <... futex resumed>) = 0 [pid 5223] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5222] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5222] <... futex resumed>) = 0 [pid 5223] ftruncate(5, 33587199 [pid 5222] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5223] <... ftruncate resumed>) = 0 [pid 5223] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5222] <... futex resumed>) = 0 [pid 5223] <... futex resumed>) = 1 [pid 5222] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5222] <... futex resumed>) = 0 [pid 5222] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5222] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5222] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5223] <... mmap resumed>) = 0x20000000 [pid 5222] <... mmap resumed>) = 0x7f50e6137000 [pid 5223] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5222] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5223] <... futex resumed>) = 0 [pid 5222] <... mprotect resumed>) = 0 [pid 5223] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5222] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5222] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5224 attached [pid 5224] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5222] <... clone3 resumed> => {parent_tid=[5224]}, 88) = 5224 [pid 5224] set_robust_list(0x7f50e61579a0, 24 [pid 5222] rt_sigprocmask(SIG_SETMASK, [], [pid 5224] <... set_robust_list resumed>) = 0 [pid 5224] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5224] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5222] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5222] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5224] <... futex resumed>) = 0 [pid 5222] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5224] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5224] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5222] <... futex resumed>) = 0 [pid 5224] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5222] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] <... futex resumed>) = 0 [pid 5222] <... futex resumed>) = 1 [pid 5223] read(6, [pid 5222] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5222] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5222] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5224] <... futex resumed>) = 0 [pid 5224] memfd_create("syzkaller", 0) = 7 [pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd37000 [pid 5224] write(7, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5224] munmap(0x7f50ddd37000, 138412032) = 0 [pid 5224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 8 [pid 5224] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 5224] ioctl(8, LOOP_CLR_FD) = 0 [pid 5224] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 5224] close(8) = 0 [pid 5224] close(7) = 0 [pid 5224] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5224] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5222] <... futex resumed>) = 0 [pid 5222] exit_group(0) = ? [pid 5224] <... futex resumed>) = ? [pid 5224] +++ exited with 0 +++ [pid 5223] <... read resumed> ) = ? [pid 5223] +++ exited with 0 +++ [pid 5222] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5222, si_uid=0, si_status=0, si_utime=0, si_stime=53 /* 0.53 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./51", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./51/binderfs", MNT_DETACH|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 [ 111.454863][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.454863][ T2805] loop0: rw=1, sector=2053, nr_sectors = 1 limit=2048 [ 111.468788][ T2805] Buffer I/O error on dev loop0, logical block 2053, lost async page write [ 111.478099][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.478099][ T2805] loop0: rw=1, sector=2054, nr_sectors = 1 limit=2048 [ 111.491820][ T2805] Buffer I/O error on dev loop0, logical block 2054, lost async page write [ 111.500429][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.500429][ T2805] loop0: rw=1, sector=2055, nr_sectors = 1 limit=2048 [ 111.514172][ T2805] Buffer I/O error on dev loop0, logical block 2055, lost async page write [ 111.522854][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.522854][ T2805] loop0: rw=1, sector=2064, nr_sectors = 1 limit=2048 [ 111.536451][ T2805] Buffer I/O error on dev loop0, logical block 2064, lost async page write [ 111.545201][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.545201][ T2805] loop0: rw=1, sector=2065, nr_sectors = 1 limit=2048 [ 111.558791][ T2805] Buffer I/O error on dev loop0, logical block 2065, lost async page write [ 111.567478][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.567478][ T2805] loop0: rw=1, sector=2066, nr_sectors = 1 limit=2048 [ 111.581110][ T2805] Buffer I/O error on dev loop0, logical block 2066, lost async page write [ 111.590744][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.590744][ T2805] loop0: rw=1, sector=2067, nr_sectors = 1 limit=2048 [ 111.604384][ T2805] Buffer I/O error on dev loop0, logical block 2067, lost async page write [ 111.613104][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.613104][ T2805] loop0: rw=1, sector=2076, nr_sectors = 8 limit=2048 [ 111.626901][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.626901][ T2805] loop0: rw=1, sector=2092, nr_sectors = 1 limit=2048 [ 111.640520][ T2805] Buffer I/O error on dev loop0, logical block 2092, lost async page write [ 111.649205][ T2805] kworker/u4:10: attempt to access beyond end of device [ 111.649205][ T2805] loop0: rw=1, sector=2101, nr_sectors = 1 limit=2048 [ 111.662813][ T2805] Buffer I/O error on dev loop0, logical block 2101, lost async page write [ 111.671489][ T2805] Buffer I/O error on dev loop0, logical block 2102, lost async page write umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5228 attached [pid 5228] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5228 [pid 5228] <... set_robust_list resumed>) = 0 [pid 5228] chdir("./52") = 0 [pid 5228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5228] setpgid(0, 0) = 0 [pid 5228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5228] write(3, "1000", 4) = 4 [pid 5228] close(3) = 0 [pid 5228] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5228] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5228] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5228] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5228] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5228] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5228] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5229 attached [pid 5229] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5228] <... clone3 resumed> => {parent_tid=[5229]}, 88) = 5229 [pid 5229] <... rseq resumed>) = 0 [pid 5229] set_robust_list(0x7f50e61789a0, 24 [pid 5228] rt_sigprocmask(SIG_SETMASK, [], [pid 5229] <... set_robust_list resumed>) = 0 [pid 5228] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5229] rt_sigprocmask(SIG_SETMASK, [], [pid 5228] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5229] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5228] <... futex resumed>) = 0 [pid 5228] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5229] memfd_create("syzkaller", 0) = 3 [pid 5229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5229] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5229] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5229] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5229] chdir("./file0") = 0 [pid 5229] ioctl(4, LOOP_CLR_FD) = 0 [pid 5229] close(4) = 0 [pid 5229] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5228] <... futex resumed>) = 0 [pid 5228] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5229] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5228] <... futex resumed>) = 0 [pid 5228] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5229] <... open resumed>) = 4 [pid 5229] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5228] <... futex resumed>) = 0 [pid 5228] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5228] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5229] <... futex resumed>) = 1 [pid 5229] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5229] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5228] <... futex resumed>) = 0 [pid 5228] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5229] <... futex resumed>) = 1 [pid 5228] <... futex resumed>) = 0 [ 111.960151][ T5229] loop0: detected capacity change from 0 to 2048 [ 111.975208][ T5229] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 111.987278][ T5229] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5229] ftruncate(5, 33587199 [pid 5228] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5229] <... ftruncate resumed>) = 0 [pid 5229] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5229] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5228] <... futex resumed>) = 0 [pid 5228] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5229] <... futex resumed>) = 0 [pid 5228] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5229] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5228] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5228] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5229] <... mmap resumed>) = 0x20000000 [pid 5229] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5228] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5229] <... futex resumed>) = 0 [pid 5229] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5228] <... mprotect resumed>) = 0 [pid 5228] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5228] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5230 attached [pid 5230] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5228] <... clone3 resumed> => {parent_tid=[5230]}, 88) = 5230 [pid 5230] <... rseq resumed>) = 0 [pid 5228] rt_sigprocmask(SIG_SETMASK, [], [pid 5230] set_robust_list(0x7f50e61579a0, 24 [pid 5228] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5230] <... set_robust_list resumed>) = 0 [pid 5228] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5230] rt_sigprocmask(SIG_SETMASK, [], [pid 5228] <... futex resumed>) = 0 [pid 5230] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5228] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5230] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5230] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5228] <... futex resumed>) = 0 [pid 5230] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5228] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5229] <... futex resumed>) = 0 [pid 5229] read(6, [pid 5228] <... futex resumed>) = 1 [pid 5228] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5228] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5230] <... futex resumed>) = 0 [pid 5228] <... futex resumed>) = 1 [pid 5228] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5230] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5229] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5229] ???( [pid 5228] <... futex resumed>) = ? [pid 5229] <... ??? resumed>) = ? [pid 5229] +++ killed by SIGBUS +++ [pid 5230] +++ killed by SIGBUS +++ [pid 5228] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5228, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./52", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./52/binderfs", MNT_DETACH|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 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5231 attached , child_tidptr=0x55555720b690) = 5231 [pid 5231] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5231] chdir("./53") = 0 [pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5231] setpgid(0, 0) = 0 [pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5231] write(3, "1000", 4) = 4 [pid 5231] close(3) = 0 [pid 5231] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5231] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5231] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5231] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5231] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5231] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5231] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5231] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5232 attached [pid 5232] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5231] <... clone3 resumed> => {parent_tid=[5232]}, 88) = 5232 [pid 5232] set_robust_list(0x7f50e61789a0, 24 [pid 5231] rt_sigprocmask(SIG_SETMASK, [], [pid 5232] <... set_robust_list resumed>) = 0 [pid 5231] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5232] rt_sigprocmask(SIG_SETMASK, [], [pid 5231] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5232] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5231] <... futex resumed>) = 0 [pid 5232] memfd_create("syzkaller", 0 [pid 5231] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5232] <... memfd_create resumed>) = 3 [pid 5232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5232] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5232] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5232] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5232] chdir("./file0") = 0 [pid 5232] ioctl(4, LOOP_CLR_FD) = 0 [pid 5232] close(4) = 0 [pid 5232] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5231] <... futex resumed>) = 0 [pid 5232] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5231] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5231] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5232] <... open resumed>) = 4 [pid 5232] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5231] <... futex resumed>) = 0 [pid 5232] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5231] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5232] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5231] <... futex resumed>) = 0 [pid 5232] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5231] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5232] <... open resumed>) = 5 [pid 5232] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5231] <... futex resumed>) = 0 [ 112.739328][ T5232] loop0: detected capacity change from 0 to 2048 [ 112.750487][ T5232] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 112.762876][ T5232] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5232] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5231] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5232] ftruncate(5, 33587199 [pid 5231] <... futex resumed>) = 0 [pid 5231] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5232] <... ftruncate resumed>) = 0 [pid 5232] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5232] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5231] <... futex resumed>) = 0 [pid 5231] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5232] <... futex resumed>) = 0 [pid 5231] <... futex resumed>) = 1 [pid 5232] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5231] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5231] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5231] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5231] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5232] <... mmap resumed>) = 0x20000000 [pid 5231] <... mprotect resumed>) = 0 [pid 5231] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5232] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5231] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5232] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5231] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5233 attached [pid 5233] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5233] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5231] <... clone3 resumed> => {parent_tid=[5233]}, 88) = 5233 [pid 5233] rt_sigprocmask(SIG_SETMASK, [], [pid 5231] rt_sigprocmask(SIG_SETMASK, [], [pid 5233] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5231] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5233] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5231] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5231] <... futex resumed>) = 0 [pid 5231] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5233] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5233] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5231] <... futex resumed>) = 0 [pid 5233] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5231] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5232] <... futex resumed>) = 0 [pid 5231] <... futex resumed>) = 1 [pid 5232] read(6, [pid 5231] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5231] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5231] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5233] <... futex resumed>) = 0 [pid 5233] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5232] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5231] <... futex resumed>) = ? [pid 5233] +++ killed by SIGBUS +++ [pid 5232] +++ killed by SIGBUS +++ [pid 5231] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5231, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./53", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./53/binderfs", MNT_DETACH|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 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5234 attached , child_tidptr=0x55555720b690) = 5234 [pid 5234] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5234] chdir("./54") = 0 [pid 5234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5234] setpgid(0, 0) = 0 [pid 5234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "1000", 4) = 4 [pid 5234] close(3) = 0 [pid 5234] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5234] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5234] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5234] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5234] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5234] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5234] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5235 attached [pid 5235] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5234] <... clone3 resumed> => {parent_tid=[5235]}, 88) = 5235 [pid 5235] set_robust_list(0x7f50e61789a0, 24 [pid 5234] rt_sigprocmask(SIG_SETMASK, [], [pid 5235] <... set_robust_list resumed>) = 0 [pid 5235] rt_sigprocmask(SIG_SETMASK, [], [pid 5234] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5235] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5234] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] memfd_create("syzkaller", 0 [pid 5234] <... futex resumed>) = 0 [pid 5234] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5235] <... memfd_create resumed>) = 3 [pid 5235] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5235] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5235] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5235] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5235] chdir("./file0") = 0 [pid 5235] ioctl(4, LOOP_CLR_FD) = 0 [pid 5235] close(4) = 0 [ 113.531260][ T5235] loop0: detected capacity change from 0 to 2048 [ 113.560109][ T5235] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 113.572493][ T5235] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5235] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5234] <... futex resumed>) = 0 [pid 5235] <... futex resumed>) = 1 [pid 5234] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5234] <... futex resumed>) = 0 [pid 5234] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5235] <... open resumed>) = 4 [pid 5235] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5234] <... futex resumed>) = 0 [pid 5235] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] <... futex resumed>) = 0 [pid 5235] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5234] <... futex resumed>) = 1 [pid 5235] <... open resumed>) = 5 [pid 5234] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5235] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5234] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5235] <... futex resumed>) = 0 [pid 5234] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] ftruncate(5, 33587199 [pid 5234] <... futex resumed>) = 0 [pid 5234] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5235] <... ftruncate resumed>) = 0 [pid 5235] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5235] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5234] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] <... futex resumed>) = 0 [pid 5234] <... futex resumed>) = 1 [pid 5235] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5234] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5234] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5234] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5235] <... mmap resumed>) = 0x20000000 [pid 5234] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5235] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5234] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5234] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5236 attached [pid 5236] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5236] set_robust_list(0x7f50e61579a0, 24 [pid 5234] <... clone3 resumed> => {parent_tid=[5236]}, 88) = 5236 [pid 5236] <... set_robust_list resumed>) = 0 [pid 5236] rt_sigprocmask(SIG_SETMASK, [], [pid 5234] rt_sigprocmask(SIG_SETMASK, [], [pid 5236] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5234] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5236] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5236] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5234] <... futex resumed>) = 0 [pid 5234] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5235] <... futex resumed>) = 0 [pid 5235] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5236] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5236] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5234] <... futex resumed>) = 0 [pid 5236] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] <... futex resumed>) = 0 [pid 5235] read(6, [pid 5234] <... futex resumed>) = 1 [pid 5234] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5234] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5236] <... futex resumed>) = 0 [pid 5234] <... futex resumed>) = 1 [pid 5234] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5236] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5235] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 241536 [pid 5235] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5235] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5234] <... futex resumed>) = ? [pid 5236] +++ killed by SIGBUS +++ [pid 5235] +++ killed by SIGBUS +++ [pid 5234] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5234, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./54", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./54/binderfs", MNT_DETACH|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 umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5237 attached , child_tidptr=0x55555720b690) = 5237 [pid 5237] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5237] chdir("./55") = 0 [pid 5237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5237] setpgid(0, 0) = 0 [pid 5237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5237] write(3, "1000", 4) = 4 [pid 5237] close(3) = 0 [pid 5237] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5237] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5237] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5237] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5237] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5237] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5237] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5237] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5238 attached => {parent_tid=[5238]}, 88) = 5238 [pid 5238] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5237] rt_sigprocmask(SIG_SETMASK, [], [pid 5238] set_robust_list(0x7f50e61789a0, 24 [pid 5237] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5238] <... set_robust_list resumed>) = 0 [pid 5238] rt_sigprocmask(SIG_SETMASK, [], [pid 5237] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5238] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5237] <... futex resumed>) = 0 [pid 5238] memfd_create("syzkaller", 0 [pid 5237] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5238] <... memfd_create resumed>) = 3 [pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5238] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5238] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5238] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5238] chdir("./file0") = 0 [pid 5238] ioctl(4, LOOP_CLR_FD) = 0 [pid 5238] close(4) = 0 [pid 5238] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5237] <... futex resumed>) = 0 [pid 5238] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5237] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5238] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5237] <... futex resumed>) = 0 [pid 5237] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 114.279432][ T5238] loop0: detected capacity change from 0 to 2048 [ 114.304639][ T5238] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 114.316564][ T5238] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5238] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5238] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5238] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5237] <... futex resumed>) = 0 [pid 5238] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5237] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5238] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5237] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5238] <... open resumed>) = 5 [pid 5238] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5237] <... futex resumed>) = 0 [pid 5238] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5237] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5238] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5237] <... futex resumed>) = 0 [pid 5238] ftruncate(5, 33587199 [pid 5237] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5238] <... ftruncate resumed>) = 0 [pid 5238] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5237] <... futex resumed>) = 0 [pid 5238] <... futex resumed>) = 1 [pid 5237] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5238] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5237] <... futex resumed>) = 0 [pid 5237] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5237] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5237] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5237] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5238] <... mmap resumed>) = 0x20000000 [pid 5237] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5238] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5237] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5237] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5239 attached [pid 5239] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5237] <... clone3 resumed> => {parent_tid=[5239]}, 88) = 5239 [pid 5239] set_robust_list(0x7f50e61579a0, 24 [pid 5237] rt_sigprocmask(SIG_SETMASK, [], [pid 5239] <... set_robust_list resumed>) = 0 [pid 5237] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5239] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5237] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5237] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5238] <... futex resumed>) = 0 [pid 5238] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5239] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5239] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5237] <... futex resumed>) = 0 [pid 5239] <... futex resumed>) = 1 [pid 5237] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5239] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5237] <... futex resumed>) = 1 [pid 5237] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5238] <... futex resumed>) = 0 [pid 5238] read(6, [pid 5237] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5237] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5239] <... futex resumed>) = 0 [pid 5237] <... futex resumed>) = 1 [pid 5237] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5239] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5238] <... read resumed>) = ? [pid 5237] <... futex resumed>) = ? [pid 5239] +++ killed by SIGBUS +++ [pid 5238] +++ killed by SIGBUS +++ [pid 5237] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5237, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=29 /* 0.29 s */} --- umount2("./55", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./55/binderfs", MNT_DETACH|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 umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5240 attached , child_tidptr=0x55555720b690) = 5240 [pid 5240] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5240] chdir("./56") = 0 [pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5240] setpgid(0, 0) = 0 [pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5240] write(3, "1000", 4) = 4 [pid 5240] close(3) = 0 [pid 5240] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5240] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5240] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5240] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5240] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5240] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5240] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5241 attached [pid 5241] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5240] <... clone3 resumed> => {parent_tid=[5241]}, 88) = 5241 [pid 5241] <... rseq resumed>) = 0 [pid 5240] rt_sigprocmask(SIG_SETMASK, [], [pid 5241] set_robust_list(0x7f50e61789a0, 24 [pid 5240] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5241] <... set_robust_list resumed>) = 0 [pid 5240] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] rt_sigprocmask(SIG_SETMASK, [], [pid 5240] <... futex resumed>) = 0 [pid 5241] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5240] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5241] memfd_create("syzkaller", 0) = 3 [pid 5241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5241] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5241] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5241] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5241] chdir("./file0") = 0 [pid 5241] ioctl(4, LOOP_CLR_FD) = 0 [pid 5241] close(4) = 0 [pid 5241] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5240] <... futex resumed>) = 0 [pid 5241] <... futex resumed>) = 1 [pid 5240] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5240] <... futex resumed>) = 0 [pid 5240] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5241] <... open resumed>) = 4 [pid 5241] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5240] <... futex resumed>) = 0 [pid 5240] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... futex resumed>) = 1 [pid 5240] <... futex resumed>) = 0 [pid 5241] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5240] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5241] <... open resumed>) = 5 [pid 5241] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5240] <... futex resumed>) = 0 [pid 5241] <... futex resumed>) = 1 [pid 5241] ftruncate(5, 33587199 [ 114.913353][ T5241] loop0: detected capacity change from 0 to 2048 [ 114.940977][ T5241] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 114.952997][ T5241] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5240] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... ftruncate resumed>) = 0 [pid 5240] <... futex resumed>) = 0 [pid 5240] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5241] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5240] <... futex resumed>) = 0 [pid 5241] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5240] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5240] <... futex resumed>) = 0 [pid 5241] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5240] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5240] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5240] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5240] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5241] <... mmap resumed>) = 0x20000000 [pid 5240] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5241] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5240] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5242 attached [pid 5241] <... futex resumed>) = 0 [pid 5240] <... clone3 resumed> => {parent_tid=[5242]}, 88) = 5242 [pid 5242] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5241] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5242] <... rseq resumed>) = 0 [pid 5240] rt_sigprocmask(SIG_SETMASK, [], [pid 5242] set_robust_list(0x7f50e61579a0, 24 [pid 5240] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5242] <... set_robust_list resumed>) = 0 [pid 5240] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5242] rt_sigprocmask(SIG_SETMASK, [], [pid 5240] <... futex resumed>) = 0 [pid 5242] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5240] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5242] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5242] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5242] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5240] <... futex resumed>) = 0 [pid 5240] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... futex resumed>) = 0 [pid 5240] <... futex resumed>) = 1 [pid 5241] read(6, [pid 5240] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5240] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5242] <... futex resumed>) = 0 [pid 5240] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5242] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5241] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5241] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5241] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5240] <... futex resumed>) = ? [pid 5242] +++ killed by SIGBUS +++ [pid 5241] +++ killed by SIGBUS +++ [pid 5240] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5240, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=25 /* 0.25 s */} --- umount2("./56", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./56/binderfs", MNT_DETACH|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 umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5243 attached , child_tidptr=0x55555720b690) = 5243 [pid 5243] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5243] chdir("./57") = 0 [pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5243] setpgid(0, 0) = 0 [pid 5243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5243] write(3, "1000", 4) = 4 [pid 5243] close(3) = 0 [pid 5243] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5243] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5243] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5243] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5243] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5243] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5243] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5243] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5244 attached [pid 5244] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5243] <... clone3 resumed> => {parent_tid=[5244]}, 88) = 5244 [pid 5244] set_robust_list(0x7f50e61789a0, 24 [pid 5243] rt_sigprocmask(SIG_SETMASK, [], [pid 5244] <... set_robust_list resumed>) = 0 [pid 5243] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5244] rt_sigprocmask(SIG_SETMASK, [], [pid 5243] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5244] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5243] <... futex resumed>) = 0 [pid 5243] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5244] memfd_create("syzkaller", 0) = 3 [pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5244] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5244] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5244] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5244] chdir("./file0") = 0 [pid 5244] ioctl(4, LOOP_CLR_FD) = 0 [pid 5244] close(4) = 0 [pid 5244] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5244] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] <... futex resumed>) = 0 [pid 5244] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5243] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5244] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5243] <... futex resumed>) = 0 [ 115.605111][ T5244] loop0: detected capacity change from 0 to 2048 [ 115.621274][ T5244] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 115.633622][ T5244] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5243] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5244] <... open resumed>) = 4 [pid 5244] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5244] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5243] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5244] <... futex resumed>) = 0 [pid 5244] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5244] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5244] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] <... futex resumed>) = 1 [pid 5243] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5243] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5244] <... futex resumed>) = 0 [pid 5244] ftruncate(5, 33587199) = 0 [pid 5244] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5243] <... futex resumed>) = 1 [pid 5244] <... futex resumed>) = 0 [pid 5244] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5243] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5244] <... futex resumed>) = 0 [pid 5243] <... futex resumed>) = 1 [pid 5244] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5243] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5243] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5243] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5243] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5244] <... mmap resumed>) = 0x20000000 [pid 5243] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5244] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5243] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5244] <... futex resumed>) = 0 [pid 5243] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5244] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5245 attached [pid 5245] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5245] set_robust_list(0x7f50e61579a0, 24 [pid 5243] <... clone3 resumed> => {parent_tid=[5245]}, 88) = 5245 [pid 5245] <... set_robust_list resumed>) = 0 [pid 5243] rt_sigprocmask(SIG_SETMASK, [], [pid 5245] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5245] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5243] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5245] <... futex resumed>) = 0 [pid 5243] <... futex resumed>) = 1 [pid 5243] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5245] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5245] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5243] <... futex resumed>) = 0 [pid 5245] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5244] <... futex resumed>) = 0 [pid 5244] read(6, [pid 5243] <... futex resumed>) = 1 [pid 5243] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5243] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5245] <... futex resumed>) = 0 [pid 5243] <... futex resumed>) = 1 [pid 5243] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5245] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5244] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5244] +++ killed by SIGBUS +++ [pid 5243] <... futex resumed>) = ? [pid 5245] +++ killed by SIGBUS +++ [pid 5243] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5243, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./57", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./57/binderfs", MNT_DETACH|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 umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5246 attached , child_tidptr=0x55555720b690) = 5246 [pid 5246] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5246] chdir("./58") = 0 [pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5246] setpgid(0, 0) = 0 [pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5246] write(3, "1000", 4) = 4 [pid 5246] close(3) = 0 [pid 5246] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5246] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5246] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5246] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5246] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5246] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5246] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5247 attached [pid 5247] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5246] <... clone3 resumed> => {parent_tid=[5247]}, 88) = 5247 [pid 5247] set_robust_list(0x7f50e61789a0, 24 [pid 5246] rt_sigprocmask(SIG_SETMASK, [], [pid 5247] <... set_robust_list resumed>) = 0 [pid 5246] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5247] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5246] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5247] memfd_create("syzkaller", 0 [pid 5246] <... futex resumed>) = 0 [pid 5246] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5247] <... memfd_create resumed>) = 3 [pid 5247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5247] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5247] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5247] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5247] chdir("./file0") = 0 [pid 5247] ioctl(4, LOOP_CLR_FD) = 0 [pid 5247] close(4) = 0 [pid 5247] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5246] <... futex resumed>) = 0 [pid 5247] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5246] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5247] <... open resumed>) = 4 [pid 5246] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5247] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5246] <... futex resumed>) = 0 [pid 5247] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [ 116.392500][ T5247] loop0: detected capacity change from 0 to 2048 [ 116.419417][ T5247] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 116.431682][ T5247] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5246] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5246] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5247] <... futex resumed>) = 0 [pid 5247] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5247] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5246] <... futex resumed>) = 0 [pid 5246] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5246] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5247] <... futex resumed>) = 1 [pid 5247] ftruncate(5, 33587199) = 0 [pid 5247] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5246] <... futex resumed>) = 0 [pid 5246] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5246] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5247] <... futex resumed>) = 1 [pid 5247] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5246] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5246] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5246] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5246] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5246] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5248 attached [pid 5248] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5246] <... clone3 resumed> => {parent_tid=[5248]}, 88) = 5248 [pid 5248] <... rseq resumed>) = 0 [pid 5246] rt_sigprocmask(SIG_SETMASK, [], [pid 5247] <... mmap resumed>) = 0x20000000 [pid 5248] set_robust_list(0x7f50e61579a0, 24 [pid 5246] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5248] <... set_robust_list resumed>) = 0 [pid 5246] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5248] rt_sigprocmask(SIG_SETMASK, [], [pid 5246] <... futex resumed>) = 0 [pid 5248] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5246] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5247] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5248] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5247] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5248] <... openat resumed>) = 6 [pid 5248] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5248] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5246] <... futex resumed>) = 0 [pid 5246] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5247] <... futex resumed>) = 0 [pid 5246] <... futex resumed>) = 1 [pid 5247] read(6, [pid 5246] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5246] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5248] <... futex resumed>) = 0 [pid 5246] <... futex resumed>) = 1 [pid 5246] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5248] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5247] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5246] <... futex resumed>) = ? [pid 5248] +++ killed by SIGBUS +++ [pid 5247] +++ killed by SIGBUS +++ [pid 5246] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5246, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- umount2("./58", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./58/binderfs", MNT_DETACH|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 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5249 attached , child_tidptr=0x55555720b690) = 5249 [pid 5249] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5249] chdir("./59") = 0 [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5249] setpgid(0, 0) = 0 [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5249] write(3, "1000", 4) = 4 [pid 5249] close(3) = 0 [pid 5249] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5249] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5249] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5249] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5249] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5249] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5249] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5250 attached [pid 5250] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5249] <... clone3 resumed> => {parent_tid=[5250]}, 88) = 5250 [pid 5250] set_robust_list(0x7f50e61789a0, 24 [pid 5249] rt_sigprocmask(SIG_SETMASK, [], [pid 5250] <... set_robust_list resumed>) = 0 [pid 5249] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5250] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5249] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5250] memfd_create("syzkaller", 0 [pid 5249] <... futex resumed>) = 0 [pid 5249] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5250] <... memfd_create resumed>) = 3 [pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5250] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5250] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5250] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5250] chdir("./file0") = 0 [pid 5250] ioctl(4, LOOP_CLR_FD) = 0 [pid 5250] close(4) = 0 [pid 5250] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] <... futex resumed>) = 0 [pid 5249] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5249] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5250] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5250] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5250] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5249] <... futex resumed>) = 0 [pid 5249] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5249] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5250] <... futex resumed>) = 1 [pid 5250] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [ 117.232190][ T5250] loop0: detected capacity change from 0 to 2048 [ 117.247884][ T5250] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 117.259967][ T5250] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5250] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5249] <... futex resumed>) = 0 [pid 5250] ftruncate(5, 33587199 [pid 5249] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5249] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5250] <... ftruncate resumed>) = 0 [pid 5250] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] <... futex resumed>) = 0 [pid 5249] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5250] <... futex resumed>) = 0 [pid 5250] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5249] <... futex resumed>) = 1 [pid 5249] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5249] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5250] <... mmap resumed>) = 0x20000000 [pid 5250] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5249] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5250] <... futex resumed>) = 0 [pid 5250] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] <... mprotect resumed>) = 0 [pid 5249] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5249] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5251 attached [pid 5251] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5251] set_robust_list(0x7f50e61579a0, 24 [pid 5249] <... clone3 resumed> => {parent_tid=[5251]}, 88) = 5251 [pid 5251] <... set_robust_list resumed>) = 0 [pid 5249] rt_sigprocmask(SIG_SETMASK, [], [pid 5251] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5249] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5251] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5251] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5249] <... futex resumed>) = 0 [pid 5249] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5251] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5251] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5249] <... futex resumed>) = 0 [pid 5251] <... futex resumed>) = 1 [pid 5249] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5251] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5250] <... futex resumed>) = 0 [pid 5249] <... futex resumed>) = 1 [pid 5250] read(6, [pid 5249] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5249] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5249] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5251] <... futex resumed>) = 0 [pid 5251] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5250] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5250] +++ killed by SIGBUS +++ [pid 5249] <... futex resumed>) = ? [pid 5251] +++ killed by SIGBUS +++ [pid 5249] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5249, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=19 /* 0.19 s */} --- umount2("./59", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./59/binderfs", MNT_DETACH|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 umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5252 attached , child_tidptr=0x55555720b690) = 5252 [pid 5252] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5252] chdir("./60") = 0 [pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5252] setpgid(0, 0) = 0 [pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5252] write(3, "1000", 4) = 4 [pid 5252] close(3) = 0 [pid 5252] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5252] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5252] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5252] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5252] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5252] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5253 attached [pid 5253] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5252] <... clone3 resumed> => {parent_tid=[5253]}, 88) = 5253 [pid 5253] set_robust_list(0x7f50e61789a0, 24 [pid 5252] rt_sigprocmask(SIG_SETMASK, [], [pid 5253] <... set_robust_list resumed>) = 0 [pid 5252] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5253] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5252] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5253] memfd_create("syzkaller", 0 [pid 5252] <... futex resumed>) = 0 [pid 5253] <... memfd_create resumed>) = 3 [pid 5252] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5253] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5253] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5253] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5253] chdir("./file0") = 0 [pid 5253] ioctl(4, LOOP_CLR_FD) = 0 [pid 5253] close(4) = 0 [pid 5253] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5253] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5252] <... futex resumed>) = 0 [ 117.882287][ T5253] loop0: detected capacity change from 0 to 2048 [ 117.897880][ T5253] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 117.910146][ T5253] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5252] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5253] <... futex resumed>) = 0 [pid 5252] <... futex resumed>) = 1 [pid 5253] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5252] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5253] <... open resumed>) = 4 [pid 5253] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5252] <... futex resumed>) = 0 [pid 5252] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5253] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5253] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5252] <... futex resumed>) = 0 [pid 5253] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5252] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5253] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5252] <... futex resumed>) = 0 [pid 5253] ftruncate(5, 33587199 [pid 5252] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5253] <... ftruncate resumed>) = 0 [pid 5253] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5252] <... futex resumed>) = 0 [pid 5253] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5252] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5253] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5253] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5252] <... futex resumed>) = 0 [pid 5252] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5252] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5252] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5252] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5252] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5254 attached [pid 5254] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5254] set_robust_list(0x7f50e61579a0, 24 [pid 5252] <... clone3 resumed> => {parent_tid=[5254]}, 88) = 5254 [pid 5254] <... set_robust_list resumed>) = 0 [pid 5252] rt_sigprocmask(SIG_SETMASK, [], [pid 5254] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5252] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5254] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5252] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5252] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5254] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5253] <... mmap resumed>) = 0x20000000 [pid 5254] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5253] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5254] <... futex resumed>) = 1 [pid 5252] <... futex resumed>) = 0 [pid 5254] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5252] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5253] <... futex resumed>) = 1 [pid 5252] <... futex resumed>) = 0 [pid 5253] read(6, [pid 5252] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5252] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5254] <... futex resumed>) = 0 [pid 5252] <... futex resumed>) = 1 [pid 5252] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5254] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5253] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5253] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] <... futex resumed>) = ? [pid 5253] +++ killed by SIGBUS +++ [pid 5254] +++ killed by SIGBUS +++ [pid 5252] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5252, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./60", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./60/binderfs", MNT_DETACH|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 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5255 attached , child_tidptr=0x55555720b690) = 5255 [pid 5255] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5255] chdir("./61") = 0 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5255] setpgid(0, 0) = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5255] write(3, "1000", 4) = 4 [pid 5255] close(3) = 0 [pid 5255] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5255] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5255] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5255] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5255] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5255] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5255] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5256 attached [pid 5256] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5255] <... clone3 resumed> => {parent_tid=[5256]}, 88) = 5256 [pid 5256] <... rseq resumed>) = 0 [pid 5255] rt_sigprocmask(SIG_SETMASK, [], [pid 5256] set_robust_list(0x7f50e61789a0, 24 [pid 5255] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5256] <... set_robust_list resumed>) = 0 [pid 5255] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5256] rt_sigprocmask(SIG_SETMASK, [], [pid 5255] <... futex resumed>) = 0 [pid 5256] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5255] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5256] memfd_create("syzkaller", 0) = 3 [pid 5256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5256] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5256] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5256] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5256] chdir("./file0") = 0 [pid 5256] ioctl(4, LOOP_CLR_FD) = 0 [pid 5256] close(4) = 0 [pid 5256] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5256] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5255] <... futex resumed>) = 0 [pid 5255] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5256] <... futex resumed>) = 0 [pid 5255] <... futex resumed>) = 1 [pid 5256] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5255] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5256] <... open resumed>) = 4 [ 118.582819][ T5256] loop0: detected capacity change from 0 to 2048 [ 118.598768][ T5256] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 118.610422][ T5256] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5256] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5255] <... futex resumed>) = 0 [pid 5256] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5255] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5256] <... open resumed>) = 5 [pid 5255] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5256] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5256] <... futex resumed>) = 0 [pid 5256] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5255] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5256] <... futex resumed>) = 0 [pid 5255] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5256] ftruncate(5, 33587199) = 0 [pid 5256] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5256] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5255] <... futex resumed>) = 0 [pid 5255] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5256] <... futex resumed>) = 0 [pid 5256] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5255] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5255] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5255] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5255] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5256] <... mmap resumed>) = 0x20000000 [pid 5256] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5255] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5256] <... futex resumed>) = 0 [pid 5256] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5255] <... clone3 resumed> => {parent_tid=[5257]}, 88) = 5257 ./strace-static-x86_64: Process 5257 attached [pid 5257] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5255] rt_sigprocmask(SIG_SETMASK, [], [pid 5257] <... rseq resumed>) = 0 [pid 5255] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5257] set_robust_list(0x7f50e61579a0, 24 [pid 5255] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5257] <... set_robust_list resumed>) = 0 [pid 5255] <... futex resumed>) = 0 [pid 5257] rt_sigprocmask(SIG_SETMASK, [], [pid 5255] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5257] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5257] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5257] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5255] <... futex resumed>) = 0 [pid 5257] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5255] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5256] <... futex resumed>) = 0 [pid 5255] <... futex resumed>) = 1 [pid 5256] read(6, [pid 5255] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5255] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5257] <... futex resumed>) = 0 [pid 5255] <... futex resumed>) = 1 [pid 5255] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5257] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5256] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5256] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = ? [pid 5255] <... futex resumed>) = ? [pid 5257] +++ killed by SIGBUS +++ [pid 5256] +++ killed by SIGBUS +++ [pid 5255] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5255, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./61", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./61/binderfs", MNT_DETACH|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 umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5258 attached , child_tidptr=0x55555720b690) = 5258 [pid 5258] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5258] chdir("./62") = 0 [pid 5258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5258] setpgid(0, 0) = 0 [pid 5258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5258] write(3, "1000", 4) = 4 [pid 5258] close(3) = 0 [pid 5258] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5258] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5258] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5258] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5258] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5258] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5258] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5259 attached [pid 5259] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5258] <... clone3 resumed> => {parent_tid=[5259]}, 88) = 5259 [pid 5259] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5259] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5259] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5258] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5258] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] <... futex resumed>) = 0 [pid 5258] <... futex resumed>) = 1 [pid 5259] memfd_create("syzkaller", 0 [pid 5258] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5259] <... memfd_create resumed>) = 3 [pid 5259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5259] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5259] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5259] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5259] chdir("./file0") = 0 [pid 5259] ioctl(4, LOOP_CLR_FD) = 0 [pid 5259] close(4) = 0 [pid 5259] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5258] <... futex resumed>) = 0 [pid 5259] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5258] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] <... futex resumed>) = 0 [pid 5258] <... futex resumed>) = 1 [pid 5259] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [ 119.309424][ T5259] loop0: detected capacity change from 0 to 2048 [ 119.320026][ T5259] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 119.332123][ T5259] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5258] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5259] <... open resumed>) = 4 [pid 5259] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5259] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5258] <... futex resumed>) = 0 [pid 5258] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] <... futex resumed>) = 0 [pid 5259] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5258] <... futex resumed>) = 1 [pid 5259] <... open resumed>) = 5 [pid 5258] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5259] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5258] <... futex resumed>) = 0 [pid 5259] ftruncate(5, 33587199 [pid 5258] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5258] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5259] <... ftruncate resumed>) = 0 [pid 5259] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5258] <... futex resumed>) = 0 [pid 5259] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5258] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5258] <... futex resumed>) = 0 [pid 5259] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5258] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5258] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5258] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5258] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5259] <... mmap resumed>) = 0x20000000 [pid 5259] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5258] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5259] <... futex resumed>) = 0 [pid 5258] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5259] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5258] <... clone3 resumed> => {parent_tid=[5260]}, 88) = 5260 ./strace-static-x86_64: Process 5260 attached [pid 5260] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5258] rt_sigprocmask(SIG_SETMASK, [], [pid 5260] <... rseq resumed>) = 0 [pid 5258] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5260] set_robust_list(0x7f50e61579a0, 24 [pid 5258] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5260] <... set_robust_list resumed>) = 0 [pid 5258] <... futex resumed>) = 0 [pid 5260] rt_sigprocmask(SIG_SETMASK, [], [pid 5258] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5260] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5260] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5260] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5258] <... futex resumed>) = 0 [pid 5260] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5258] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] <... futex resumed>) = 0 [pid 5259] read(6, [pid 5258] <... futex resumed>) = 1 [pid 5258] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5258] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5260] <... futex resumed>) = 0 [pid 5258] <... futex resumed>) = 1 [pid 5258] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5260] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5259] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5259] +++ killed by SIGBUS +++ [pid 5258] <... futex resumed>) = ? [pid 5260] +++ killed by SIGBUS +++ [pid 5258] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5258, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=20 /* 0.20 s */} --- umount2("./62", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./62/binderfs", MNT_DETACH|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 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5261 attached [pid 5261] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5261 [pid 5261] <... set_robust_list resumed>) = 0 [pid 5261] chdir("./63") = 0 [pid 5261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5261] setpgid(0, 0) = 0 [pid 5261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5261] write(3, "1000", 4) = 4 [pid 5261] close(3) = 0 [pid 5261] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5261] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5261] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5261] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5261] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5261] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5261] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5262 attached [pid 5262] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5262] set_robust_list(0x7f50e61789a0, 24 [pid 5261] <... clone3 resumed> => {parent_tid=[5262]}, 88) = 5262 [pid 5262] <... set_robust_list resumed>) = 0 [pid 5262] rt_sigprocmask(SIG_SETMASK, [], [pid 5261] rt_sigprocmask(SIG_SETMASK, [], [pid 5262] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5261] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5262] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5261] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] memfd_create("syzkaller", 0 [pid 5261] <... futex resumed>) = 0 [pid 5261] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5262] <... memfd_create resumed>) = 3 [pid 5262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5262] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5262] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5262] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5262] chdir("./file0") = 0 [pid 5262] ioctl(4, LOOP_CLR_FD) = 0 [pid 5262] close(4) = 0 [pid 5262] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5261] <... futex resumed>) = 0 [pid 5261] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5261] <... futex resumed>) = 0 [ 120.106987][ T5262] loop0: detected capacity change from 0 to 2048 [ 120.125949][ T5262] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 120.137970][ T5262] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5261] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5262] <... open resumed>) = 4 [pid 5262] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5261] <... futex resumed>) = 0 [pid 5261] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5261] <... futex resumed>) = 0 [pid 5262] <... open resumed>) = 5 [pid 5261] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5262] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5261] <... futex resumed>) = 0 [pid 5261] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] <... futex resumed>) = 1 [pid 5261] <... futex resumed>) = 0 [pid 5262] ftruncate(5, 33587199 [pid 5261] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5262] <... ftruncate resumed>) = 0 [pid 5262] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5261] <... futex resumed>) = 0 [pid 5262] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5261] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5261] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5261] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5261] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5261] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5262] <... mmap resumed>) = 0x20000000 [pid 5261] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5262] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5261] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5262] <... futex resumed>) = 0 [pid 5262] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5263 attached [pid 5263] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5261] <... clone3 resumed> => {parent_tid=[5263]}, 88) = 5263 [pid 5263] <... rseq resumed>) = 0 [pid 5263] set_robust_list(0x7f50e61579a0, 24 [pid 5261] rt_sigprocmask(SIG_SETMASK, [], [pid 5263] <... set_robust_list resumed>) = 0 [pid 5261] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5263] rt_sigprocmask(SIG_SETMASK, [], [pid 5261] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5263] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5261] <... futex resumed>) = 0 [pid 5261] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5263] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5263] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5261] <... futex resumed>) = 0 [pid 5263] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5261] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5262] <... futex resumed>) = 0 [pid 5261] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5262] read(6, [pid 5261] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5261] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5261] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5263] <... futex resumed>) = 0 [pid 5261] <... futex resumed>) = 1 [pid 5261] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5263] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5262] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5263] +++ killed by SIGBUS +++ [pid 5261] <... futex resumed>) = ? [pid 5262] +++ killed by SIGBUS +++ [pid 5261] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5261, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./63", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./63/binderfs", MNT_DETACH|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 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5264 attached [pid 5264] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5264 [pid 5264] chdir("./64") = 0 [pid 5264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5264] setpgid(0, 0) = 0 [pid 5264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5264] write(3, "1000", 4) = 4 [pid 5264] close(3) = 0 [pid 5264] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5264] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5264] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5264] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5264] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5264] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5264] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5265 attached [pid 5265] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5264] <... clone3 resumed> => {parent_tid=[5265]}, 88) = 5265 [pid 5265] set_robust_list(0x7f50e61789a0, 24 [pid 5264] rt_sigprocmask(SIG_SETMASK, [], [pid 5265] <... set_robust_list resumed>) = 0 [pid 5265] rt_sigprocmask(SIG_SETMASK, [], [pid 5264] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5265] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5264] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5265] memfd_create("syzkaller", 0 [pid 5264] <... futex resumed>) = 0 [pid 5264] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5265] <... memfd_create resumed>) = 3 [pid 5265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5265] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5265] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5265] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5265] chdir("./file0") = 0 [pid 5265] ioctl(4, LOOP_CLR_FD) = 0 [pid 5265] close(4) = 0 [pid 5265] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5264] <... futex resumed>) = 0 [pid 5265] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5264] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5264] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5265] <... open resumed>) = 4 [pid 5265] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5264] <... futex resumed>) = 0 [pid 5265] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5264] <... futex resumed>) = 0 [pid 5265] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5264] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5265] <... open resumed>) = 5 [pid 5265] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] <... futex resumed>) = 0 [pid 5264] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5265] <... futex resumed>) = 0 [pid 5264] <... futex resumed>) = 1 [ 120.943986][ T5265] loop0: detected capacity change from 0 to 2048 [ 120.959385][ T5265] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 120.971491][ T5265] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5265] ftruncate(5, 33587199 [pid 5264] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5265] <... ftruncate resumed>) = 0 [pid 5265] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5264] <... futex resumed>) = 0 [pid 5265] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5264] <... futex resumed>) = 0 [pid 5265] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5264] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5264] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5264] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5264] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5264] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5266 attached [pid 5266] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5266] set_robust_list(0x7f50e61579a0, 24 [pid 5264] <... clone3 resumed> => {parent_tid=[5266]}, 88) = 5266 [pid 5266] <... set_robust_list resumed>) = 0 [pid 5266] rt_sigprocmask(SIG_SETMASK, [], [pid 5264] rt_sigprocmask(SIG_SETMASK, [], [pid 5266] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5266] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5264] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5264] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5266] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5266] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5264] <... futex resumed>) = 0 [pid 5266] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5264] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5266] read(6, [pid 5264] <... futex resumed>) = 0 [pid 5264] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5265] <... mmap resumed>) = 0x20000000 [pid 5265] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5265] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5264] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5265] <... futex resumed>) = 0 [pid 5264] <... futex resumed>) = 1 [pid 5264] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5266] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 216960 [pid 5265] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20077000} --- [pid 5266] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = ? [pid 5266] +++ killed by SIGBUS +++ [pid 5264] <... futex resumed>) = ? [pid 5265] +++ killed by SIGBUS +++ [pid 5264] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5264, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=28 /* 0.28 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./64", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./64/binderfs", MNT_DETACH|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 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5267 attached , child_tidptr=0x55555720b690) = 5267 [pid 5267] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5267] chdir("./65") = 0 [pid 5267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5267] setpgid(0, 0) = 0 [pid 5267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5267] write(3, "1000", 4) = 4 [pid 5267] close(3) = 0 [pid 5267] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5267] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5267] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5267] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5267] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5267] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5267] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5268 attached [pid 5268] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5268] set_robust_list(0x7f50e61789a0, 24 [pid 5267] <... clone3 resumed> => {parent_tid=[5268]}, 88) = 5268 [pid 5268] <... set_robust_list resumed>) = 0 [pid 5267] rt_sigprocmask(SIG_SETMASK, [], [pid 5268] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5267] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5268] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5267] <... futex resumed>) = 0 [pid 5268] memfd_create("syzkaller", 0 [pid 5267] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5268] <... memfd_create resumed>) = 3 [pid 5268] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5268] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5268] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5268] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5268] chdir("./file0") = 0 [pid 5268] ioctl(4, LOOP_CLR_FD) = 0 [pid 5268] close(4) = 0 [pid 5268] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5267] <... futex resumed>) = 0 [pid 5268] <... futex resumed>) = 1 [pid 5267] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5268] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5267] <... futex resumed>) = 0 [pid 5267] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5268] <... open resumed>) = 4 [pid 5268] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5267] <... futex resumed>) = 0 [ 121.539646][ T5268] loop0: detected capacity change from 0 to 2048 [ 121.556597][ T5268] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 121.568747][ T5268] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5268] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5267] <... futex resumed>) = 0 [pid 5268] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5267] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5268] <... open resumed>) = 5 [pid 5268] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5267] <... futex resumed>) = 0 [pid 5268] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5267] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5268] ftruncate(5, 33587199 [pid 5267] <... futex resumed>) = 0 [pid 5268] <... ftruncate resumed>) = 0 [pid 5267] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5268] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5268] <... futex resumed>) = 0 [pid 5268] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5267] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5267] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5268] <... mmap resumed>) = 0x20000000 [pid 5267] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5268] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5268] <... futex resumed>) = 0 [pid 5267] <... futex resumed>) = 1 [pid 5267] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5268] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5268] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5267] <... futex resumed>) = 0 [pid 5267] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5268] read(6, [pid 5267] <... futex resumed>) = 0 [pid 5267] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5267] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5267] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5267] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5267] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5269 attached [pid 5269] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5267] <... clone3 resumed> => {parent_tid=[5269]}, 88) = 5269 [pid 5267] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5269] set_robust_list(0x7f50e61579a0, 24 [pid 5267] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5269] <... set_robust_list resumed>) = 0 [pid 5267] <... futex resumed>) = 0 [pid 5269] rt_sigprocmask(SIG_SETMASK, [], [pid 5267] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5269] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5269] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x2006b000} --- [pid 5267] <... futex resumed>) = ? [pid 5268] <... read resumed> ) = ? [pid 5269] +++ killed by SIGBUS +++ [pid 5268] +++ killed by SIGBUS +++ [pid 5267] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5267, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./65", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./65/binderfs", MNT_DETACH|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 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5270 attached , child_tidptr=0x55555720b690) = 5270 [pid 5270] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5270] chdir("./66") = 0 [pid 5270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5270] setpgid(0, 0) = 0 [pid 5270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5270] write(3, "1000", 4) = 4 [pid 5270] close(3) = 0 [pid 5270] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5270] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5270] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5270] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5270] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5270] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5270] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5271 attached [pid 5271] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5270] <... clone3 resumed> => {parent_tid=[5271]}, 88) = 5271 [pid 5271] <... rseq resumed>) = 0 [pid 5270] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5270] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5270] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5271] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5271] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5271] memfd_create("syzkaller", 0) = 3 [pid 5271] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5271] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5271] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5271] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5271] chdir("./file0") = 0 [pid 5271] ioctl(4, LOOP_CLR_FD) = 0 [pid 5271] close(4) = 0 [pid 5271] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5270] <... futex resumed>) = 0 [ 122.163736][ T5271] loop0: detected capacity change from 0 to 2048 [ 122.191899][ T5271] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 122.203897][ T5271] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5271] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5270] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5271] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5270] <... futex resumed>) = 0 [pid 5271] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5270] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5271] <... open resumed>) = 4 [pid 5271] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5270] <... futex resumed>) = 0 [pid 5270] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5270] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5271] <... futex resumed>) = 1 [pid 5271] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5271] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5270] <... futex resumed>) = 0 [pid 5271] <... futex resumed>) = 1 [pid 5270] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5271] ftruncate(5, 33587199 [pid 5270] <... futex resumed>) = 0 [pid 5270] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5271] <... ftruncate resumed>) = 0 [pid 5271] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5270] <... futex resumed>) = 0 [pid 5271] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5270] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5270] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5270] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5270] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5270] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5271] <... mmap resumed>) = 0x20000000 [pid 5271] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5270] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5271] <... futex resumed>) = 0 [pid 5271] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5270] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5272 attached => {parent_tid=[5272]}, 88) = 5272 [pid 5272] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5272] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5272] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5270] rt_sigprocmask(SIG_SETMASK, [], [pid 5272] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5270] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5270] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5272] <... futex resumed>) = 0 [pid 5270] <... futex resumed>) = 1 [pid 5270] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5272] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5272] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5270] <... futex resumed>) = 0 [pid 5272] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5270] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5271] <... futex resumed>) = 0 [pid 5270] <... futex resumed>) = 1 [pid 5271] read(6, [pid 5270] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5270] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5272] <... futex resumed>) = 0 [pid 5270] <... futex resumed>) = 1 [pid 5270] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5272] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5271] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5271] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = ? [pid 5270] <... futex resumed>) = ? [pid 5272] +++ killed by SIGBUS +++ [pid 5271] +++ killed by SIGBUS +++ [pid 5270] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5270, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- umount2("./66", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./66/binderfs", MNT_DETACH|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 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5273 attached [pid 5273] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5273 [pid 5273] <... set_robust_list resumed>) = 0 [pid 5273] chdir("./67") = 0 [pid 5273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5273] setpgid(0, 0) = 0 [pid 5273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5273] write(3, "1000", 4) = 4 [pid 5273] close(3) = 0 [pid 5273] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5273] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5273] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5273] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5273] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5273] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5273] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5274 attached => {parent_tid=[5274]}, 88) = 5274 [pid 5274] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5273] rt_sigprocmask(SIG_SETMASK, [], [pid 5274] set_robust_list(0x7f50e61789a0, 24 [pid 5273] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5274] <... set_robust_list resumed>) = 0 [pid 5274] rt_sigprocmask(SIG_SETMASK, [], [pid 5273] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5274] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5274] memfd_create("syzkaller", 0) = 3 [pid 5274] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5274] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5274] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5274] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5274] chdir("./file0") = 0 [pid 5274] ioctl(4, LOOP_CLR_FD) = 0 [pid 5274] close(4) = 0 [pid 5274] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 122.961637][ T5274] loop0: detected capacity change from 0 to 2048 [ 122.986274][ T5274] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 122.998440][ T5274] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5274] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5274] <... futex resumed>) = 0 [pid 5273] <... futex resumed>) = 1 [pid 5274] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5273] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5274] <... open resumed>) = 4 [pid 5274] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5274] <... futex resumed>) = 1 [pid 5274] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5274] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5274] <... futex resumed>) = 1 [pid 5274] ftruncate(5, 33587199) = 0 [pid 5274] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5274] <... futex resumed>) = 1 [pid 5274] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5273] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5273] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5273] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5273] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5273] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5275 attached => {parent_tid=[5275]}, 88) = 5275 [pid 5275] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5273] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5273] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5275] <... rseq resumed>) = 0 [pid 5275] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5275] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5275] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5275] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5275] read(6, [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5273] futex(0x7f50e62636ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6116000 [pid 5273] mprotect(0x7f50e6117000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5273] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5273] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6136990, parent_tid=0x7f50e6136990, exit_signal=0, stack=0x7f50e6116000, stack_size=0x20300, tls=0x7f50e61366c0}./strace-static-x86_64: Process 5276 attached [pid 5276] rseq(0x7f50e6136fe0, 0x20, 0, 0x53053053 [pid 5274] <... mmap resumed>) = 0x20000000 [pid 5276] <... rseq resumed>) = 0 [pid 5273] <... clone3 resumed> => {parent_tid=[5276]}, 88) = 5276 [pid 5276] set_robust_list(0x7f50e61369a0, 24 [pid 5274] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5276] <... set_robust_list resumed>) = 0 [pid 5274] <... futex resumed>) = 0 [pid 5276] rt_sigprocmask(SIG_SETMASK, [], [pid 5274] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5276] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5276] futex(0x7f50e62636e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5273] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5273] futex(0x7f50e62636e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5273] futex(0x7f50e62636ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5276] <... futex resumed>) = 0 [pid 5276] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5275] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5274] <... futex resumed>) = ? [pid 5273] <... futex resumed>) = ? [pid 5276] +++ killed by SIGBUS +++ [pid 5275] +++ killed by SIGBUS +++ [pid 5274] +++ killed by SIGBUS +++ [pid 5273] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5273, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=27 /* 0.27 s */} --- umount2("./67", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./67/binderfs", MNT_DETACH|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 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5277 attached , child_tidptr=0x55555720b690) = 5277 [pid 5277] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5277] chdir("./68") = 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] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5277] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5277] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5277] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5277] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5277] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5278 attached [pid 5278] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5277] <... clone3 resumed> => {parent_tid=[5278]}, 88) = 5278 [pid 5278] <... rseq resumed>) = 0 [pid 5278] set_robust_list(0x7f50e61789a0, 24 [pid 5277] rt_sigprocmask(SIG_SETMASK, [], [pid 5278] <... set_robust_list resumed>) = 0 [pid 5277] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5278] rt_sigprocmask(SIG_SETMASK, [], [pid 5277] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5277] <... futex resumed>) = 0 [pid 5278] memfd_create("syzkaller", 0 [pid 5277] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5278] <... memfd_create resumed>) = 3 [pid 5278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5278] 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"..., 1048576) = 1048576 [pid 5278] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5278] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5278] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5278] close(3) = 0 [pid 5278] mkdir("./file0", 0777) = 0 [pid 5278] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5278] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5278] chdir("./file0") = 0 [pid 5278] ioctl(4, LOOP_CLR_FD) = 0 [pid 5278] close(4) = 0 [pid 5278] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 123.702579][ T5278] loop0: detected capacity change from 0 to 2048 [ 123.727957][ T5278] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 123.739625][ T5278] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5278] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5277] <... futex resumed>) = 0 [pid 5277] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5277] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5278] <... futex resumed>) = 0 [pid 5278] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5278] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5278] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5277] <... futex resumed>) = 0 [pid 5277] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] <... futex resumed>) = 0 [pid 5277] <... futex resumed>) = 1 [pid 5278] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5277] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5278] <... open resumed>) = 5 [pid 5278] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5277] <... futex resumed>) = 0 [pid 5278] <... futex resumed>) = 1 [pid 5277] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] ftruncate(5, 33587199 [pid 5277] <... futex resumed>) = 0 [pid 5277] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5278] <... ftruncate resumed>) = 0 [pid 5278] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5277] <... futex resumed>) = 0 [pid 5278] <... futex resumed>) = 1 [pid 5277] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5277] <... futex resumed>) = 0 [pid 5277] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5277] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5278] <... mmap resumed>) = 0x20000000 [pid 5277] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5278] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5278] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5277] <... mprotect resumed>) = 0 [pid 5277] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5277] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5279 attached [pid 5279] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5277] <... clone3 resumed> => {parent_tid=[5279]}, 88) = 5279 [pid 5279] <... rseq resumed>) = 0 [pid 5279] set_robust_list(0x7f50e61579a0, 24 [pid 5277] rt_sigprocmask(SIG_SETMASK, [], [pid 5279] <... set_robust_list resumed>) = 0 [pid 5277] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5279] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5277] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5279] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5279] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5277] <... futex resumed>) = 0 [pid 5279] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5277] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] <... futex resumed>) = 0 [pid 5278] read(6, [pid 5277] <... futex resumed>) = 1 [pid 5277] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5277] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5279] <... futex resumed>) = 0 [pid 5277] <... futex resumed>) = 1 [pid 5277] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5279] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5278] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 241536 [pid 5278] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5278] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5279] +++ killed by SIGBUS +++ [pid 5278] +++ killed by SIGBUS +++ [pid 5277] <... futex resumed>) = ? [pid 5277] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5277, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=27 /* 0.27 s */} --- umount2("./68", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./68/binderfs", MNT_DETACH|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 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5280 attached , child_tidptr=0x55555720b690) = 5280 [pid 5280] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5280] chdir("./69") = 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] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5280] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5280] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5280] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5280] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5280] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5280] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5281 attached [pid 5281] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5281] set_robust_list(0x7f50e61789a0, 24 [pid 5280] <... clone3 resumed> => {parent_tid=[5281]}, 88) = 5281 [pid 5281] <... set_robust_list resumed>) = 0 [pid 5281] rt_sigprocmask(SIG_SETMASK, [], [pid 5280] rt_sigprocmask(SIG_SETMASK, [], [pid 5281] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5280] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5281] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5280] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] memfd_create("syzkaller", 0 [pid 5280] <... futex resumed>) = 0 [pid 5280] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5281] <... memfd_create resumed>) = 3 [pid 5281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5281] 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"..., 1048576) = 1048576 [pid 5281] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5281] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5281] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5281] close(3) = 0 [pid 5281] mkdir("./file0", 0777) = 0 [pid 5281] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5281] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5281] chdir("./file0") = 0 [pid 5281] ioctl(4, LOOP_CLR_FD) = 0 [pid 5281] close(4) = 0 [pid 5281] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5280] <... futex resumed>) = 0 [pid 5281] <... futex resumed>) = 1 [pid 5281] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5280] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5280] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5281] <... open resumed>) = 4 [pid 5281] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5281] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] <... futex resumed>) = 0 [pid 5280] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] <... futex resumed>) = 0 [pid 5280] <... futex resumed>) = 1 [pid 5281] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5281] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5280] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5281] <... futex resumed>) = 0 [pid 5280] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5281] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5280] <... futex resumed>) = 0 [pid 5281] ftruncate(5, 33587199 [pid 5280] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5281] <... ftruncate resumed>) = 0 [pid 5281] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5280] <... futex resumed>) = 0 [pid 5281] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5280] <... futex resumed>) = 0 [pid 5281] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [ 124.461440][ T5281] loop0: detected capacity change from 0 to 2048 [ 124.487159][ T5281] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 124.499120][ T5281] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5280] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5280] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5280] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5280] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5280] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5281] <... mmap resumed>) = 0x20000000 [pid 5281] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5280] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5281] <... futex resumed>) = 0 [pid 5280] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5281] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] <... clone3 resumed> => {parent_tid=[5282]}, 88) = 5282 [pid 5280] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ./strace-static-x86_64: Process 5282 attached [pid 5282] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5280] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5282] <... rseq resumed>) = 0 [pid 5280] <... futex resumed>) = 0 [pid 5282] set_robust_list(0x7f50e61579a0, 24 [pid 5280] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5282] <... set_robust_list resumed>) = 0 [pid 5282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5282] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5282] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5280] <... futex resumed>) = 0 [pid 5282] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] <... futex resumed>) = 0 [pid 5280] <... futex resumed>) = 1 [pid 5281] read(6, [pid 5280] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5280] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5282] <... futex resumed>) = 0 [pid 5280] <... futex resumed>) = 1 [pid 5280] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5282] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5281] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 241536 [pid 5281] ???() = ? [pid 5281] +++ killed by SIGBUS +++ [pid 5280] <... futex resumed>) = ? [pid 5282] +++ killed by SIGBUS +++ [pid 5280] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5280, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./69", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./69/binderfs", MNT_DETACH|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 umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5283 attached , child_tidptr=0x55555720b690) = 5283 [pid 5283] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5283] chdir("./70") = 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] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5283] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5283] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5283] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5283] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5283] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5284 attached => {parent_tid=[5284]}, 88) = 5284 [pid 5284] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5284] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5284] rt_sigprocmask(SIG_SETMASK, [], [pid 5283] rt_sigprocmask(SIG_SETMASK, [], [pid 5284] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5283] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5284] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5283] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5283] <... futex resumed>) = 0 [pid 5284] memfd_create("syzkaller", 0 [pid 5283] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5284] <... memfd_create resumed>) = 3 [pid 5284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5284] 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"..., 1048576) = 1048576 [pid 5284] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5284] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5284] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5284] close(3) = 0 [pid 5284] mkdir("./file0", 0777) = 0 [pid 5284] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5284] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5284] chdir("./file0") = 0 [pid 5284] ioctl(4, LOOP_CLR_FD) = 0 [pid 5284] close(4) = 0 [pid 5284] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 125.166387][ T5284] loop0: detected capacity change from 0 to 2048 [ 125.192333][ T5284] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 125.204417][ T5284] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5284] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5283] <... futex resumed>) = 0 [pid 5284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5283] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5284] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5283] <... futex resumed>) = 0 [pid 5283] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] <... open resumed>) = 4 [pid 5284] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] <... futex resumed>) = 0 [pid 5283] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5284] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5283] <... futex resumed>) = 0 [pid 5284] <... open resumed>) = 5 [pid 5283] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5283] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] <... futex resumed>) = 0 [pid 5284] ftruncate(5, 33587199) = 0 [pid 5284] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] <... futex resumed>) = 0 [pid 5284] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5283] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5284] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5283] <... futex resumed>) = 0 [pid 5283] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5283] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5284] <... mmap resumed>) = 0x20000000 [pid 5284] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5283] <... mmap resumed>) = 0x7f50e6137000 [pid 5283] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5284] <... futex resumed>) = 0 [pid 5284] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5283] <... mprotect resumed>) = 0 [pid 5283] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5283] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5285 attached [pid 5285] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5283] <... clone3 resumed> => {parent_tid=[5285]}, 88) = 5285 [pid 5285] set_robust_list(0x7f50e61579a0, 24 [pid 5283] rt_sigprocmask(SIG_SETMASK, [], [pid 5285] <... set_robust_list resumed>) = 0 [pid 5285] rt_sigprocmask(SIG_SETMASK, [], [pid 5283] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5285] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5283] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5285] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5285] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5283] <... futex resumed>) = 0 [pid 5285] <... futex resumed>) = 1 [pid 5283] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5285] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5284] <... futex resumed>) = 0 [pid 5284] read(6, [pid 5283] <... futex resumed>) = 1 [pid 5283] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5283] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5285] <... futex resumed>) = 0 [pid 5283] <... futex resumed>) = 1 [pid 5283] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5285] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5285] +++ killed by SIGBUS +++ [pid 5284] <... read resumed> ) = ? [pid 5283] <... futex resumed>) = ? [pid 5284] +++ killed by SIGBUS +++ [pid 5283] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5283, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./70", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./70/binderfs", MNT_DETACH|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 umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5286 attached , child_tidptr=0x55555720b690) = 5286 [pid 5286] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5286] chdir("./71") = 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] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5286] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5286] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5286] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5287 attached [pid 5287] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5286] <... clone3 resumed> => {parent_tid=[5287]}, 88) = 5287 [pid 5287] <... rseq resumed>) = 0 [pid 5286] rt_sigprocmask(SIG_SETMASK, [], [pid 5287] set_robust_list(0x7f50e61789a0, 24 [pid 5286] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5287] <... set_robust_list resumed>) = 0 [pid 5286] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] rt_sigprocmask(SIG_SETMASK, [], [pid 5286] <... futex resumed>) = 0 [pid 5287] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5286] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5287] memfd_create("syzkaller", 0) = 3 [pid 5287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5287] 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"..., 1048576) = 1048576 [pid 5287] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5287] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5287] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5287] close(3) = 0 [pid 5287] mkdir("./file0", 0777) = 0 [pid 5287] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5287] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5287] chdir("./file0") = 0 [pid 5287] ioctl(4, LOOP_CLR_FD) = 0 [pid 5287] close(4) = 0 [ 125.870054][ T5287] loop0: detected capacity change from 0 to 2048 [ 125.898147][ T5287] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 125.909880][ T5287] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5287] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] <... futex resumed>) = 0 [pid 5286] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5286] <... futex resumed>) = 0 [pid 5286] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] <... open resumed>) = 4 [pid 5287] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5287] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] <... futex resumed>) = 0 [pid 5286] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5287] <... futex resumed>) = 0 [pid 5286] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5287] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5287] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] <... futex resumed>) = 0 [pid 5286] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] <... futex resumed>) = 0 [pid 5286] <... futex resumed>) = 1 [pid 5287] ftruncate(5, 33587199 [pid 5286] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] <... ftruncate resumed>) = 0 [pid 5287] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] <... futex resumed>) = 0 [pid 5287] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5286] <... futex resumed>) = 0 [pid 5287] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5286] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5286] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5286] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5286] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5287] <... mmap resumed>) = 0x20000000 [pid 5287] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5286] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5287] <... futex resumed>) = 0 [pid 5286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5287] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5288 attached [pid 5288] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5286] <... clone3 resumed> => {parent_tid=[5288]}, 88) = 5288 [pid 5288] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5286] rt_sigprocmask(SIG_SETMASK, [], [pid 5288] rt_sigprocmask(SIG_SETMASK, [], [pid 5286] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5288] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5286] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5288] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5288] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] <... futex resumed>) = 0 [pid 5288] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] <... futex resumed>) = 0 [pid 5286] <... futex resumed>) = 1 [pid 5287] read(6, [pid 5286] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5286] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5288] <... futex resumed>) = 0 [pid 5288] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5287] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5286] <... futex resumed>) = ? [pid 5288] +++ killed by SIGBUS +++ [pid 5287] +++ killed by SIGBUS +++ [pid 5286] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5286, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=18 /* 0.18 s */} --- umount2("./71", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./71/binderfs", MNT_DETACH|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 umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5289 attached [pid 5289] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5289 [pid 5289] <... set_robust_list resumed>) = 0 [pid 5289] chdir("./72") = 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] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5289] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5289] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5289] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5290 attached => {parent_tid=[5290]}, 88) = 5290 [pid 5289] rt_sigprocmask(SIG_SETMASK, [], [pid 5290] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5289] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5289] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5290] <... rseq resumed>) = 0 [pid 5290] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5290] memfd_create("syzkaller", 0) = 3 [pid 5290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5290] 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"..., 1048576) = 1048576 [pid 5290] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5290] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5290] close(3) = 0 [pid 5290] mkdir("./file0", 0777) = 0 [pid 5290] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5290] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5290] chdir("./file0") = 0 [pid 5290] ioctl(4, LOOP_CLR_FD) = 0 [pid 5290] close(4) = 0 [pid 5290] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5289] <... futex resumed>) = 0 [ 126.658341][ T5290] loop0: detected capacity change from 0 to 2048 [ 126.675046][ T5290] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 126.687073][ T5290] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5290] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5290] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5289] <... futex resumed>) = 0 [pid 5290] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5289] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] <... open resumed>) = 4 [pid 5290] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5289] <... futex resumed>) = 0 [pid 5290] <... futex resumed>) = 1 [pid 5289] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5290] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5289] <... futex resumed>) = 0 [pid 5290] <... open resumed>) = 5 [pid 5289] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5289] <... futex resumed>) = 0 [pid 5290] ftruncate(5, 33587199 [pid 5289] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] <... ftruncate resumed>) = 0 [pid 5290] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5289] <... futex resumed>) = 0 [pid 5290] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5290] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5289] <... futex resumed>) = 0 [pid 5290] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5289] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5289] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5289] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5289] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5290] <... mmap resumed>) = 0x20000000 [pid 5290] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5289] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5290] <... futex resumed>) = 0 [pid 5290] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5291 attached [pid 5291] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5289] <... clone3 resumed> => {parent_tid=[5291]}, 88) = 5291 [pid 5291] <... rseq resumed>) = 0 [pid 5289] rt_sigprocmask(SIG_SETMASK, [], [pid 5291] set_robust_list(0x7f50e61579a0, 24 [pid 5289] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5291] <... set_robust_list resumed>) = 0 [pid 5289] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5289] <... futex resumed>) = 0 [pid 5289] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5291] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5291] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5289] <... futex resumed>) = 0 [pid 5291] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5290] <... futex resumed>) = 0 [pid 5289] <... futex resumed>) = 1 [pid 5290] read(6, [pid 5289] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5289] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5291] <... futex resumed>) = 0 [pid 5289] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5291] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5290] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 241536 [pid 5290] ???() = ? [pid 5290] +++ killed by SIGBUS +++ [pid 5289] <... futex resumed>) = ? [pid 5291] +++ killed by SIGBUS +++ [pid 5289] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5289, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./72", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./72/binderfs", MNT_DETACH|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 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./72/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5292 attached [pid 5292] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5292 [pid 5292] <... set_robust_list resumed>) = 0 [pid 5292] chdir("./73") = 0 [pid 5292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5292] setpgid(0, 0) = 0 [pid 5292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5292] write(3, "1000", 4) = 4 [pid 5292] close(3) = 0 [pid 5292] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5292] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5292] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5292] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5293 attached [pid 5293] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5293] set_robust_list(0x7f50e61789a0, 24 [pid 5292] <... clone3 resumed> => {parent_tid=[5293]}, 88) = 5293 [pid 5293] <... set_robust_list resumed>) = 0 [pid 5293] rt_sigprocmask(SIG_SETMASK, [], [pid 5292] rt_sigprocmask(SIG_SETMASK, [], [pid 5293] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5292] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5293] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5292] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5292] <... futex resumed>) = 0 [pid 5293] memfd_create("syzkaller", 0 [pid 5292] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5293] <... memfd_create resumed>) = 3 [pid 5293] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5293] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5293] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5293] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5293] chdir("./file0") = 0 [pid 5293] ioctl(4, LOOP_CLR_FD) = 0 [pid 5293] close(4) = 0 [pid 5293] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5293] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] <... futex resumed>) = 0 [pid 5292] <... futex resumed>) = 1 [ 127.343091][ T5293] loop0: detected capacity change from 0 to 2048 [ 127.361403][ T5293] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 127.373523][ T5293] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5293] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5292] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... open resumed>) = 4 [pid 5293] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5293] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] <... futex resumed>) = 0 [pid 5292] <... futex resumed>) = 1 [pid 5293] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5292] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... open resumed>) = 5 [pid 5293] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5292] <... futex resumed>) = 0 [pid 5293] <... futex resumed>) = 1 [pid 5292] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] ftruncate(5, 33587199 [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... ftruncate resumed>) = 0 [pid 5293] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5292] <... futex resumed>) = 0 [pid 5293] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5292] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5293] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5292] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5292] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5293] <... mmap resumed>) = 0x20000000 [pid 5292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5294 attached [pid 5293] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5294] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5292] <... clone3 resumed> => {parent_tid=[5294]}, 88) = 5294 [pid 5294] <... rseq resumed>) = 0 [pid 5292] rt_sigprocmask(SIG_SETMASK, [], [pid 5294] set_robust_list(0x7f50e61579a0, 24 [pid 5292] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5294] <... set_robust_list resumed>) = 0 [pid 5293] <... futex resumed>) = 0 [pid 5292] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5294] rt_sigprocmask(SIG_SETMASK, [], [pid 5292] <... futex resumed>) = 0 [pid 5294] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5293] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5294] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5292] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5294] <... openat resumed>) = 6 [pid 5294] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5292] <... futex resumed>) = 0 [pid 5294] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5292] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] <... futex resumed>) = 0 [pid 5292] <... futex resumed>) = 1 [pid 5293] read(6, [pid 5292] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5292] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5294] <... futex resumed>) = 0 [pid 5292] <... futex resumed>) = 1 [pid 5292] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5294] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5293] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 225152 [pid 5292] <... futex resumed>) = ? [pid 5294] +++ killed by SIGBUS +++ [pid 5293] +++ killed by SIGBUS +++ [pid 5292] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5292, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=25 /* 0.25 s */} --- umount2("./73", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./73/binderfs", MNT_DETACH|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 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5295 attached , child_tidptr=0x55555720b690) = 5295 [pid 5295] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5295] chdir("./74") = 0 [pid 5295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5295] setpgid(0, 0) = 0 [pid 5295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5295] write(3, "1000", 4) = 4 [pid 5295] close(3) = 0 [pid 5295] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5295] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5295] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5295] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5295] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5295] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5296 attached [pid 5296] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5295] <... clone3 resumed> => {parent_tid=[5296]}, 88) = 5296 [pid 5296] <... rseq resumed>) = 0 [pid 5296] set_robust_list(0x7f50e61789a0, 24 [pid 5295] rt_sigprocmask(SIG_SETMASK, [], [pid 5296] <... set_robust_list resumed>) = 0 [pid 5295] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5295] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5296] memfd_create("syzkaller", 0 [pid 5295] <... futex resumed>) = 0 [pid 5295] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5296] <... memfd_create resumed>) = 3 [pid 5296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5296] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5296] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5296] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5296] chdir("./file0") = 0 [ 128.088941][ T5296] loop0: detected capacity change from 0 to 2048 [ 128.105487][ T5296] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 128.117995][ T5296] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5296] ioctl(4, LOOP_CLR_FD) = 0 [pid 5296] close(4) = 0 [pid 5296] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] <... futex resumed>) = 0 [pid 5296] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5295] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] <... open resumed>) = 4 [pid 5296] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5296] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5295] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5296] <... futex resumed>) = 0 [pid 5295] <... futex resumed>) = 1 [pid 5296] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5295] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5296] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5295] <... futex resumed>) = 0 [pid 5296] ftruncate(5, 33587199 [pid 5295] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] <... ftruncate resumed>) = 0 [pid 5296] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] <... futex resumed>) = 0 [pid 5296] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5295] <... futex resumed>) = 0 [pid 5296] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5295] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5295] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5295] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5295] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5296] <... mmap resumed>) = 0x20000000 [pid 5296] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5295] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5296] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5297 attached [pid 5296] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5297] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5295] <... clone3 resumed> => {parent_tid=[5297]}, 88) = 5297 [pid 5297] <... rseq resumed>) = 0 [pid 5295] rt_sigprocmask(SIG_SETMASK, [], [pid 5297] set_robust_list(0x7f50e61579a0, 24 [pid 5295] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5297] <... set_robust_list resumed>) = 0 [pid 5295] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5297] rt_sigprocmask(SIG_SETMASK, [], [pid 5295] <... futex resumed>) = 0 [pid 5297] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5295] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5297] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5297] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5297] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] <... futex resumed>) = 0 [pid 5295] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] <... futex resumed>) = 0 [pid 5296] read(6, [pid 5295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5295] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5297] <... futex resumed>) = 0 [pid 5295] <... futex resumed>) = 1 [pid 5295] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5297] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5296] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5296] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5296] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5295] <... futex resumed>) = ? [pid 5297] +++ killed by SIGBUS +++ [pid 5296] +++ killed by SIGBUS +++ [pid 5295] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5295, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=27 /* 0.27 s */} --- umount2("./74", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./74/binderfs", MNT_DETACH|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 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5298 attached , child_tidptr=0x55555720b690) = 5298 [pid 5298] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5298] chdir("./75") = 0 [pid 5298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5298] setpgid(0, 0) = 0 [pid 5298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5298] write(3, "1000", 4) = 4 [pid 5298] close(3) = 0 [pid 5298] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5298] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5298] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5298] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5299 attached [pid 5299] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5298] <... clone3 resumed> => {parent_tid=[5299]}, 88) = 5299 [pid 5299] set_robust_list(0x7f50e61789a0, 24 [pid 5298] rt_sigprocmask(SIG_SETMASK, [], [pid 5299] <... set_robust_list resumed>) = 0 [pid 5299] rt_sigprocmask(SIG_SETMASK, [], [pid 5298] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5299] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5298] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5299] memfd_create("syzkaller", 0 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5299] <... memfd_create resumed>) = 3 [pid 5299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5299] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5299] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5299] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5299] chdir("./file0") = 0 [pid 5299] ioctl(4, LOOP_CLR_FD) = 0 [pid 5299] close(4) = 0 [pid 5299] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5299] <... futex resumed>) = 1 [pid 5298] <... futex resumed>) = 0 [pid 5299] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5298] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] <... open resumed>) = 4 [pid 5299] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5298] <... futex resumed>) = 0 [pid 5299] <... futex resumed>) = 1 [pid 5298] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5299] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5298] <... futex resumed>) = 0 [pid 5299] <... open resumed>) = 5 [pid 5298] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5299] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5299] <... futex resumed>) = 0 [pid 5298] <... futex resumed>) = 1 [pid 5299] ftruncate(5, 33587199 [ 128.750234][ T5299] loop0: detected capacity change from 0 to 2048 [ 128.761360][ T5299] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 128.773357][ T5299] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5298] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] <... ftruncate resumed>) = 0 [pid 5299] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5298] <... futex resumed>) = 0 [pid 5299] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5298] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5299] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5298] <... futex resumed>) = 0 [pid 5299] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5298] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5298] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5298] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5300 attached [pid 5300] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5298] <... clone3 resumed> => {parent_tid=[5300]}, 88) = 5300 [pid 5300] <... rseq resumed>) = 0 [pid 5298] rt_sigprocmask(SIG_SETMASK, [], [pid 5300] set_robust_list(0x7f50e61579a0, 24 [pid 5299] <... mmap resumed>) = 0x20000000 [pid 5300] <... set_robust_list resumed>) = 0 [pid 5298] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5299] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5300] rt_sigprocmask(SIG_SETMASK, [], [pid 5299] <... futex resumed>) = 0 [pid 5298] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5299] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5300] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5300] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5300] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5298] <... futex resumed>) = 0 [pid 5300] <... futex resumed>) = 1 [pid 5298] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5300] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5299] <... futex resumed>) = 0 [pid 5298] <... futex resumed>) = 1 [pid 5298] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] read(6, [pid 5298] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5298] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5300] <... futex resumed>) = 0 [pid 5298] <... futex resumed>) = 1 [pid 5298] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5300] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5299] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5299] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5299] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5298] <... futex resumed>) = ? [pid 5300] +++ killed by SIGBUS +++ [pid 5299] +++ killed by SIGBUS +++ [pid 5298] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5298, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=29 /* 0.29 s */} --- umount2("./75", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./75/binderfs", MNT_DETACH|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 umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/file0") = 0 getdents64(3, 0x55555720c730 /* 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) = -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 5301 attached , child_tidptr=0x55555720b690) = 5301 [pid 5301] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5301] chdir("./76") = 0 [pid 5301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5301] setpgid(0, 0) = 0 [pid 5301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5301] write(3, "1000", 4) = 4 [pid 5301] close(3) = 0 [pid 5301] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5301] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5301] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5301] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5301] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5301] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5301] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5301] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5302 attached => {parent_tid=[5302]}, 88) = 5302 [pid 5302] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5302] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5302] rt_sigprocmask(SIG_SETMASK, [], [pid 5301] rt_sigprocmask(SIG_SETMASK, [], [pid 5302] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5301] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5302] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5302] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5301] <... futex resumed>) = 0 [pid 5302] memfd_create("syzkaller", 0 [pid 5301] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5302] <... memfd_create resumed>) = 3 [pid 5302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5302] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5302] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5302] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5302] chdir("./file0") = 0 [pid 5302] ioctl(4, LOOP_CLR_FD) = 0 [pid 5302] close(4) = 0 [pid 5302] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5301] <... futex resumed>) = 0 [pid 5302] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5302] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5301] <... futex resumed>) = 0 [pid 5302] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5301] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] <... open resumed>) = 4 [pid 5302] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5301] <... futex resumed>) = 0 [pid 5301] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5301] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 129.476447][ T5302] loop0: detected capacity change from 0 to 2048 [ 129.493264][ T5302] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 129.505374][ T5302] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5302] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5302] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5302] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] <... futex resumed>) = 0 [pid 5301] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5302] <... futex resumed>) = 0 [pid 5301] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] ftruncate(5, 33587199) = 0 [pid 5302] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5301] <... futex resumed>) = 0 [pid 5302] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5302] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5302] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5301] <... futex resumed>) = 0 [pid 5301] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5301] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5301] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5301] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5301] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5302] <... mmap resumed>) = 0x20000000 [pid 5301] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5302] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5301] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5302] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5303 attached [pid 5302] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5303] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5301] <... clone3 resumed> => {parent_tid=[5303]}, 88) = 5303 [pid 5303] <... rseq resumed>) = 0 [pid 5301] rt_sigprocmask(SIG_SETMASK, [], [pid 5303] set_robust_list(0x7f50e61579a0, 24 [pid 5301] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5303] <... set_robust_list resumed>) = 0 [pid 5301] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5303] rt_sigprocmask(SIG_SETMASK, [], [pid 5301] <... futex resumed>) = 0 [pid 5303] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5301] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5303] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5303] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5301] <... futex resumed>) = 0 [pid 5303] <... futex resumed>) = 1 [pid 5301] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5303] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5302] <... futex resumed>) = 0 [pid 5301] <... futex resumed>) = 1 [pid 5302] read(6, [pid 5301] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5301] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5301] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5303] <... futex resumed>) = 0 [pid 5301] <... futex resumed>) = 1 [pid 5301] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5303] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20077000} --- [pid 5302] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 216960 [pid 5301] <... futex resumed>) = ? [pid 5302] +++ killed by SIGBUS +++ [pid 5303] +++ killed by SIGBUS +++ [pid 5301] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5301, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./76", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./76/binderfs", MNT_DETACH|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 umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./76/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./76") = 0 mkdir("./77", 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 5304 attached , child_tidptr=0x55555720b690) = 5304 [pid 5304] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5304] chdir("./77") = 0 [pid 5304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5304] setpgid(0, 0) = 0 [pid 5304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5304] write(3, "1000", 4) = 4 [pid 5304] close(3) = 0 [pid 5304] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5304] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5304] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5304] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5304] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5305 attached [pid 5305] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5304] <... clone3 resumed> => {parent_tid=[5305]}, 88) = 5305 [pid 5305] set_robust_list(0x7f50e61789a0, 24 [pid 5304] rt_sigprocmask(SIG_SETMASK, [], [pid 5305] <... set_robust_list resumed>) = 0 [pid 5305] rt_sigprocmask(SIG_SETMASK, [], [pid 5304] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5305] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5304] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5305] memfd_create("syzkaller", 0 [pid 5304] <... futex resumed>) = 0 [pid 5305] <... memfd_create resumed>) = 3 [pid 5305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5304] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [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"..., 1048576) = 1048576 [pid 5305] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5305] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5305] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5305] chdir("./file0") = 0 [pid 5305] ioctl(4, LOOP_CLR_FD) = 0 [pid 5305] close(4) = 0 [ 130.150782][ T5305] loop0: detected capacity change from 0 to 2048 [ 130.178109][ T5305] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 130.189999][ T5305] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5305] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5304] <... futex resumed>) = 0 [pid 5305] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5304] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5305] <... open resumed>) = 4 [pid 5305] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] <... futex resumed>) = 0 [pid 5305] <... futex resumed>) = 1 [pid 5304] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5305] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5304] <... futex resumed>) = 0 [pid 5305] <... open resumed>) = 5 [pid 5304] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5305] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] <... futex resumed>) = 0 [pid 5304] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5305] <... futex resumed>) = 1 [pid 5304] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5305] ftruncate(5, 33587199) = 0 [pid 5305] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] <... futex resumed>) = 0 [pid 5305] <... futex resumed>) = 1 [pid 5304] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5305] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5304] <... futex resumed>) = 0 [pid 5304] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5304] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5304] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5305] <... mmap resumed>) = 0x20000000 [pid 5305] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5305] <... futex resumed>) = 0 [pid 5304] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5305] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5306 attached [pid 5306] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5304] <... clone3 resumed> => {parent_tid=[5306]}, 88) = 5306 [pid 5306] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5304] rt_sigprocmask(SIG_SETMASK, [], [pid 5306] rt_sigprocmask(SIG_SETMASK, [], [pid 5304] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5306] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5304] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5306] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5306] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5304] <... futex resumed>) = 0 [pid 5306] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5304] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5305] <... futex resumed>) = 0 [pid 5305] read(6, [pid 5304] <... futex resumed>) = 1 [pid 5304] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5304] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5306] <... futex resumed>) = 0 [pid 5304] <... futex resumed>) = 1 [pid 5304] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5306] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5305] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5304] <... futex resumed>) = ? [pid 5306] +++ killed by SIGBUS +++ [pid 5305] +++ killed by SIGBUS +++ [pid 5304] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5304, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./77", MNT_DETACH|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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./77/binderfs", MNT_DETACH|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 umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./77") = 0 mkdir("./78", 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 5307 attached , child_tidptr=0x55555720b690) = 5307 [pid 5307] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5307] chdir("./78") = 0 [pid 5307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5307] setpgid(0, 0) = 0 [pid 5307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5307] write(3, "1000", 4) = 4 [pid 5307] close(3) = 0 [pid 5307] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5307] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5307] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5307] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5307] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5307] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5307] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5308 attached => {parent_tid=[5308]}, 88) = 5308 [pid 5308] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5308] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5308] rt_sigprocmask(SIG_SETMASK, [], [pid 5307] rt_sigprocmask(SIG_SETMASK, [], [pid 5308] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5307] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5308] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5307] <... futex resumed>) = 0 [pid 5308] memfd_create("syzkaller", 0 [pid 5307] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5308] <... memfd_create resumed>) = 3 [pid 5308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5308] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5308] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5308] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5308] chdir("./file0") = 0 [pid 5308] ioctl(4, LOOP_CLR_FD) = 0 [ 130.876144][ T5308] loop0: detected capacity change from 0 to 2048 [ 130.901676][ T5308] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 130.913813][ T5308] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5308] close(4) = 0 [pid 5308] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5307] <... futex resumed>) = 0 [pid 5308] <... futex resumed>) = 1 [pid 5307] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5307] <... futex resumed>) = 0 [pid 5307] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5308] <... open resumed>) = 4 [pid 5308] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5308] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] <... futex resumed>) = 0 [pid 5307] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5307] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5308] <... futex resumed>) = 0 [pid 5308] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5308] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5307] <... futex resumed>) = 0 [pid 5308] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5307] <... futex resumed>) = 0 [pid 5308] ftruncate(5, 33587199 [pid 5307] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5308] <... ftruncate resumed>) = 0 [pid 5308] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5307] <... futex resumed>) = 0 [pid 5308] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = 0 [pid 5307] <... futex resumed>) = 1 [pid 5308] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5307] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5307] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5307] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5307] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5308] <... mmap resumed>) = 0x20000000 [pid 5307] <... mprotect resumed>) = 0 [pid 5308] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5307] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5308] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5307] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5309 attached => {parent_tid=[5309]}, 88) = 5309 [pid 5309] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5307] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5307] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5309] <... rseq resumed>) = 0 [pid 5309] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5309] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5309] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5309] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] <... futex resumed>) = 0 [pid 5307] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = 0 [pid 5307] <... futex resumed>) = 1 [pid 5308] read(6, [pid 5307] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5307] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5309] <... futex resumed>) = 0 [pid 5307] <... futex resumed>) = 1 [pid 5307] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5309] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5307] <... futex resumed>) = ? [pid 5308] <... read resumed> ) = ? [pid 5309] +++ killed by SIGBUS +++ [pid 5308] +++ killed by SIGBUS +++ [pid 5307] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5307, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./78", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./78/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./78/binderfs") = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./78/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./78") = 0 mkdir("./79", 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 5310 attached , child_tidptr=0x55555720b690) = 5310 [pid 5310] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5310] chdir("./79") = 0 [pid 5310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5310] setpgid(0, 0) = 0 [pid 5310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5310] write(3, "1000", 4) = 4 [pid 5310] close(3) = 0 [pid 5310] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5310] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5310] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5310] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5310] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5311 attached [pid 5311] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5310] <... clone3 resumed> => {parent_tid=[5311]}, 88) = 5311 [pid 5311] <... rseq resumed>) = 0 [pid 5310] rt_sigprocmask(SIG_SETMASK, [], [pid 5311] set_robust_list(0x7f50e61789a0, 24 [pid 5310] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5311] <... set_robust_list resumed>) = 0 [pid 5310] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5311] rt_sigprocmask(SIG_SETMASK, [], [pid 5310] <... futex resumed>) = 0 [pid 5311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5311] memfd_create("syzkaller", 0 [pid 5310] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5311] <... memfd_create resumed>) = 3 [pid 5311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5311] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5311] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5311] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5311] chdir("./file0") = 0 [pid 5311] ioctl(4, LOOP_CLR_FD) = 0 [pid 5311] close(4) = 0 [pid 5311] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5311] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5310] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5311] <... open resumed>) = 4 [pid 5310] <... futex resumed>) = 0 [pid 5311] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5310] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5311] <... futex resumed>) = 0 [pid 5310] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5310] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5311] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5310] <... futex resumed>) = 0 [pid 5311] <... open resumed>) = 5 [pid 5310] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5311] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5311] ftruncate(5, 33587199 [ 131.673584][ T5311] loop0: detected capacity change from 0 to 2048 [ 131.687938][ T5311] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 131.700046][ T5311] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5310] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5311] <... ftruncate resumed>) = 0 [pid 5310] <... futex resumed>) = 0 [pid 5311] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5310] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5311] <... futex resumed>) = 0 [pid 5310] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5311] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5310] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5310] <... futex resumed>) = 0 [pid 5311] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5310] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5310] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5310] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5311] <... mmap resumed>) = 0x20000000 [pid 5310] <... mprotect resumed>) = 0 [pid 5310] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5311] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5311] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5310] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5312 attached [pid 5312] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5312] set_robust_list(0x7f50e61579a0, 24 [pid 5310] <... clone3 resumed> => {parent_tid=[5312]}, 88) = 5312 [pid 5312] <... set_robust_list resumed>) = 0 [pid 5312] rt_sigprocmask(SIG_SETMASK, [], [pid 5310] rt_sigprocmask(SIG_SETMASK, [], [pid 5312] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5310] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5310] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5312] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5310] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5312] <... openat resumed>) = 6 [pid 5312] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5312] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5310] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5311] <... futex resumed>) = 0 [pid 5310] <... futex resumed>) = 1 [pid 5311] read(6, [pid 5310] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5310] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5312] <... futex resumed>) = 0 [pid 5310] <... futex resumed>) = 1 [pid 5310] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5312] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20073000} --- [pid 5311] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 233344 [pid 5311] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5310] <... futex resumed>) = ? [pid 5312] +++ killed by SIGBUS +++ [pid 5311] <... futex resumed>) = ? [pid 5311] +++ killed by SIGBUS +++ [pid 5310] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5310, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- umount2("./79", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./79/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./79/binderfs") = 0 umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./79/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./79") = 0 mkdir("./80", 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 5313 attached [pid 5313] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5313 [pid 5313] <... set_robust_list resumed>) = 0 [pid 5313] chdir("./80") = 0 [pid 5313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5313] setpgid(0, 0) = 0 [pid 5313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5313] write(3, "1000", 4) = 4 [pid 5313] close(3) = 0 [pid 5313] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5313] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5313] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5313] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5313] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5314 attached [pid 5314] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5313] <... clone3 resumed> => {parent_tid=[5314]}, 88) = 5314 [pid 5314] <... rseq resumed>) = 0 [pid 5313] rt_sigprocmask(SIG_SETMASK, [], [pid 5314] set_robust_list(0x7f50e61789a0, 24 [pid 5313] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5314] <... set_robust_list resumed>) = 0 [pid 5313] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5313] <... futex resumed>) = 0 [pid 5314] memfd_create("syzkaller", 0 [pid 5313] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5314] <... memfd_create resumed>) = 3 [pid 5314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5314] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [ 132.421025][ T5314] loop0: detected capacity change from 0 to 2048 [ 132.451028][ T5314] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [pid 5314] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5314] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5314] chdir("./file0") = 0 [pid 5314] ioctl(4, LOOP_CLR_FD) = 0 [pid 5314] close(4) = 0 [pid 5314] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5313] <... futex resumed>) = 0 [pid 5314] <... futex resumed>) = 1 [pid 5313] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5314] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5313] <... futex resumed>) = 0 [ 132.463086][ T5314] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5313] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5314] <... open resumed>) = 4 [pid 5314] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5314] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5313] <... futex resumed>) = 0 [pid 5313] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5314] <... futex resumed>) = 0 [pid 5313] <... futex resumed>) = 1 [pid 5314] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5313] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5314] <... open resumed>) = 5 [pid 5314] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5313] <... futex resumed>) = 0 [pid 5314] ftruncate(5, 33587199 [pid 5313] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5314] <... ftruncate resumed>) = 0 [pid 5313] <... futex resumed>) = 0 [pid 5314] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5313] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5314] <... futex resumed>) = 0 [pid 5313] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5314] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5313] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5314] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5313] <... futex resumed>) = 0 [pid 5314] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5313] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5313] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5314] <... mmap resumed>) = 0x20000000 [pid 5314] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5313] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5314] <... futex resumed>) = 0 [pid 5314] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5313] <... mprotect resumed>) = 0 [pid 5313] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5315 attached [pid 5315] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5315] set_robust_list(0x7f50e61579a0, 24 [pid 5313] <... clone3 resumed> => {parent_tid=[5315]}, 88) = 5315 [pid 5315] <... set_robust_list resumed>) = 0 [pid 5313] rt_sigprocmask(SIG_SETMASK, [], [pid 5315] rt_sigprocmask(SIG_SETMASK, [], [pid 5313] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5315] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5313] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5315] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5313] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5315] <... openat resumed>) = 6 [pid 5315] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5313] <... futex resumed>) = 0 [pid 5315] <... futex resumed>) = 1 [pid 5313] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5315] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5314] <... futex resumed>) = 0 [pid 5313] <... futex resumed>) = 1 [pid 5314] read(6, [pid 5313] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5313] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5315] <... futex resumed>) = 0 [pid 5313] <... futex resumed>) = 1 [pid 5313] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5315] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5314] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 241536 [pid 5313] <... futex resumed>) = ? [pid 5315] +++ killed by SIGBUS +++ [pid 5314] +++ killed by SIGBUS +++ [pid 5313] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5313, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=24 /* 0.24 s */} --- umount2("./80", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./80/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./80/binderfs") = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./80/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./80") = 0 mkdir("./81", 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 5316 attached , child_tidptr=0x55555720b690) = 5316 [pid 5316] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5316] chdir("./81") = 0 [pid 5316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5316] setpgid(0, 0) = 0 [pid 5316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5316] write(3, "1000", 4) = 4 [pid 5316] close(3) = 0 [pid 5316] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5316] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5316] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5316] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5316] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5317 attached [pid 5317] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5316] <... clone3 resumed> => {parent_tid=[5317]}, 88) = 5317 [pid 5317] <... rseq resumed>) = 0 [pid 5316] rt_sigprocmask(SIG_SETMASK, [], [pid 5317] set_robust_list(0x7f50e61789a0, 24 [pid 5316] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5317] <... set_robust_list resumed>) = 0 [pid 5316] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5317] rt_sigprocmask(SIG_SETMASK, [], [pid 5316] <... futex resumed>) = 0 [pid 5317] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5317] memfd_create("syzkaller", 0 [pid 5316] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5317] <... memfd_create resumed>) = 3 [pid 5317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5317] 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"..., 1048576) = 1048576 [pid 5317] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5317] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5317] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5317] close(3) = 0 [pid 5317] mkdir("./file0", 0777) = 0 [ 133.233087][ T5317] loop0: detected capacity change from 0 to 2048 [ 133.264020][ T5317] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [pid 5317] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5317] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5317] chdir("./file0") = 0 [pid 5317] ioctl(4, LOOP_CLR_FD) = 0 [pid 5317] close(4) = 0 [pid 5317] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5317] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5316] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5317] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5316] <... futex resumed>) = 0 [ 133.276141][ T5317] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5316] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5317] <... open resumed>) = 4 [pid 5317] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5316] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5317] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5316] <... futex resumed>) = 0 [pid 5317] <... open resumed>) = 5 [pid 5317] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5317] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5316] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5316] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5317] <... futex resumed>) = 0 [pid 5316] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5317] ftruncate(5, 33587199) = 0 [pid 5317] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5317] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5316] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5317] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5316] <... futex resumed>) = 0 [pid 5316] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5316] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5317] <... mmap resumed>) = 0x20000000 [pid 5316] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5317] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5317] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5316] <... mprotect resumed>) = 0 [pid 5316] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5318 attached [pid 5318] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5316] <... clone3 resumed> => {parent_tid=[5318]}, 88) = 5318 [pid 5318] set_robust_list(0x7f50e61579a0, 24 [pid 5316] rt_sigprocmask(SIG_SETMASK, [], [pid 5318] <... set_robust_list resumed>) = 0 [pid 5316] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5316] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5318] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5318] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5318] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5316] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5317] <... futex resumed>) = 0 [pid 5316] <... futex resumed>) = 1 [pid 5317] read(6, [pid 5316] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5316] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5318] <... futex resumed>) = 0 [pid 5316] <... futex resumed>) = 1 [pid 5316] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5318] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x2006d000} --- [pid 5317] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 257920 [pid 5316] <... futex resumed>) = ? [pid 5318] +++ killed by SIGBUS +++ [pid 5317] +++ killed by SIGBUS +++ [pid 5316] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5316, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./81", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./81/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./81/binderfs") = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./81/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./81") = 0 mkdir("./82", 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 5319 attached , child_tidptr=0x55555720b690) = 5319 [pid 5319] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5319] chdir("./82") = 0 [pid 5319] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5319] setpgid(0, 0) = 0 [pid 5319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5319] write(3, "1000", 4) = 4 [pid 5319] close(3) = 0 [pid 5319] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5319] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5319] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5319] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5319] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5319] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5319] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5319] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5320 attached [pid 5320] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5320] set_robust_list(0x7f50e61789a0, 24 [pid 5319] <... clone3 resumed> => {parent_tid=[5320]}, 88) = 5320 [pid 5320] <... set_robust_list resumed>) = 0 [pid 5320] rt_sigprocmask(SIG_SETMASK, [], [pid 5319] rt_sigprocmask(SIG_SETMASK, [], [pid 5320] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5319] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5320] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5319] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5320] memfd_create("syzkaller", 0 [pid 5319] <... futex resumed>) = 0 [pid 5319] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5320] <... memfd_create resumed>) = 3 [pid 5320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5320] 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"..., 1048576) = 1048576 [pid 5320] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5320] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5320] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5320] close(3) = 0 [pid 5320] mkdir("./file0", 0777) = 0 [pid 5320] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5320] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5320] chdir("./file0") = 0 [pid 5320] ioctl(4, LOOP_CLR_FD) = 0 [pid 5320] close(4) = 0 [pid 5320] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] <... futex resumed>) = 0 [pid 5320] <... futex resumed>) = 1 [pid 5319] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5320] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5319] <... futex resumed>) = 0 [pid 5319] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5320] <... open resumed>) = 4 [pid 5320] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5319] <... futex resumed>) = 0 [ 133.913580][ T5320] loop0: detected capacity change from 0 to 2048 [ 133.927713][ T5320] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 133.939948][ T5320] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5319] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5320] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5319] <... futex resumed>) = 0 [pid 5320] <... open resumed>) = 5 [pid 5319] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5320] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] <... futex resumed>) = 0 [pid 5320] <... futex resumed>) = 1 [pid 5319] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5320] ftruncate(5, 33587199 [pid 5319] <... futex resumed>) = 0 [pid 5319] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5320] <... ftruncate resumed>) = 0 [pid 5320] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5319] <... futex resumed>) = 0 [pid 5320] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5319] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5320] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5319] <... futex resumed>) = 0 [pid 5319] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5319] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5319] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5319] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5319] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5320] <... mmap resumed>) = 0x20000000 [pid 5320] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5319] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5320] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5321 attached [pid 5320] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5321] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5319] <... clone3 resumed> => {parent_tid=[5321]}, 88) = 5321 [pid 5321] <... rseq resumed>) = 0 [pid 5319] rt_sigprocmask(SIG_SETMASK, [], [pid 5321] set_robust_list(0x7f50e61579a0, 24 [pid 5319] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5321] <... set_robust_list resumed>) = 0 [pid 5319] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5321] rt_sigprocmask(SIG_SETMASK, [], [pid 5319] <... futex resumed>) = 0 [pid 5321] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5319] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5321] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5321] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] <... futex resumed>) = 0 [pid 5321] <... futex resumed>) = 1 [pid 5319] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5321] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5320] <... futex resumed>) = 0 [pid 5319] <... futex resumed>) = 1 [pid 5320] read(6, [pid 5319] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5319] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5321] <... futex resumed>) = 0 [pid 5319] <... futex resumed>) = 1 [pid 5319] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5321] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5320] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5321] +++ killed by SIGBUS +++ [pid 5319] <... futex resumed>) = ? [pid 5320] +++ killed by SIGBUS +++ [pid 5319] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5319, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=25 /* 0.25 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./82", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./82/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./82/binderfs") = 0 umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./82/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./82") = 0 mkdir("./83", 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 5322 attached , child_tidptr=0x55555720b690) = 5322 [pid 5322] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5322] chdir("./83") = 0 [pid 5322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5322] setpgid(0, 0) = 0 [pid 5322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5322] write(3, "1000", 4) = 4 [pid 5322] close(3) = 0 [pid 5322] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5322] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5322] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5322] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5322] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5322] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5323 attached [pid 5323] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5323] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5323] rt_sigprocmask(SIG_SETMASK, [], [pid 5322] <... clone3 resumed> => {parent_tid=[5323]}, 88) = 5323 [pid 5323] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5322] rt_sigprocmask(SIG_SETMASK, [], [pid 5323] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5322] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5322] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5323] <... futex resumed>) = 0 [pid 5322] <... futex resumed>) = 1 [pid 5322] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5323] memfd_create("syzkaller", 0) = 3 [pid 5323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5323] 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"..., 1048576) = 1048576 [pid 5323] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5323] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5323] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5323] close(3) = 0 [pid 5323] mkdir("./file0", 0777) = 0 [pid 5323] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5323] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5323] chdir("./file0") = 0 [pid 5323] ioctl(4, LOOP_CLR_FD) = 0 [pid 5323] close(4) = 0 [pid 5323] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5323] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5322] <... futex resumed>) = 0 [pid 5322] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5323] <... futex resumed>) = 0 [pid 5322] <... futex resumed>) = 1 [pid 5323] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5322] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5323] <... open resumed>) = 4 [pid 5323] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] <... futex resumed>) = 0 [pid 5323] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5322] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5323] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5322] <... futex resumed>) = 0 [pid 5323] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5322] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5323] <... open resumed>) = 5 [pid 5323] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5322] <... futex resumed>) = 0 [pid 5322] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5323] <... futex resumed>) = 1 [pid 5323] ftruncate(5, 33587199) = 0 [ 134.589362][ T5323] loop0: detected capacity change from 0 to 2048 [ 134.600020][ T5323] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 134.612109][ T5323] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5323] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5322] <... futex resumed>) = 0 [pid 5323] <... futex resumed>) = 1 [pid 5322] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5323] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5322] <... futex resumed>) = 0 [pid 5322] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5322] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5322] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5322] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5322] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5324 attached [pid 5324] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5322] <... clone3 resumed> => {parent_tid=[5324]}, 88) = 5324 [pid 5324] set_robust_list(0x7f50e61579a0, 24 [pid 5322] rt_sigprocmask(SIG_SETMASK, [], [pid 5324] <... set_robust_list resumed>) = 0 [pid 5322] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5324] rt_sigprocmask(SIG_SETMASK, [], [pid 5323] <... mmap resumed>) = 0x20000000 [pid 5322] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5324] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5322] <... futex resumed>) = 0 [pid 5323] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5323] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5322] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5324] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5324] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5324] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5322] <... futex resumed>) = 0 [pid 5322] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5323] <... futex resumed>) = 0 [pid 5323] read(6, [pid 5322] <... futex resumed>) = 1 [pid 5322] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5322] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5324] <... futex resumed>) = 0 [pid 5324] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5323] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5322] <... futex resumed>) = ? [pid 5323] +++ killed by SIGBUS +++ [pid 5324] +++ killed by SIGBUS +++ [pid 5322] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5322, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./83", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./83/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./83/binderfs") = 0 umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./83/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./83") = 0 mkdir("./84", 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 5325 attached , child_tidptr=0x55555720b690) = 5325 [pid 5325] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5325] chdir("./84") = 0 [pid 5325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5325] setpgid(0, 0) = 0 [pid 5325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5325] write(3, "1000", 4) = 4 [pid 5325] close(3) = 0 [pid 5325] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5325] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5325] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5325] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5325] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5326 attached [pid 5326] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5325] <... clone3 resumed> => {parent_tid=[5326]}, 88) = 5326 [pid 5326] set_robust_list(0x7f50e61789a0, 24 [pid 5325] rt_sigprocmask(SIG_SETMASK, [], [pid 5326] <... set_robust_list resumed>) = 0 [pid 5325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5326] rt_sigprocmask(SIG_SETMASK, [], [pid 5325] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5326] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5326] memfd_create("syzkaller", 0 [pid 5325] <... futex resumed>) = 0 [pid 5325] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5326] <... memfd_create resumed>) = 3 [pid 5326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5326] 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"..., 1048576) = 1048576 [pid 5326] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5326] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5326] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5326] close(3) = 0 [pid 5326] mkdir("./file0", 0777) = 0 [pid 5326] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5326] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5326] chdir("./file0") = 0 [pid 5326] ioctl(4, LOOP_CLR_FD) = 0 [pid 5326] close(4) = 0 [pid 5326] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5325] <... futex resumed>) = 0 [pid 5326] <... futex resumed>) = 1 [pid 5325] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5326] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5325] <... futex resumed>) = 0 [pid 5325] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5326] <... open resumed>) = 4 [pid 5326] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5326] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5325] <... futex resumed>) = 0 [pid 5325] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5326] <... futex resumed>) = 0 [pid 5326] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5325] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5326] <... open resumed>) = 5 [pid 5326] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5325] <... futex resumed>) = 0 [pid 5326] ftruncate(5, 33587199 [ 135.279654][ T5326] loop0: detected capacity change from 0 to 2048 [ 135.290165][ T5326] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 135.302389][ T5326] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5325] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5326] <... ftruncate resumed>) = 0 [pid 5325] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5326] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5325] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5326] <... futex resumed>) = 0 [pid 5325] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5326] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5325] <... futex resumed>) = 0 [pid 5325] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5325] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5325] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5325] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5327 attached [pid 5326] <... mmap resumed>) = 0x20000000 [pid 5325] <... clone3 resumed> => {parent_tid=[5327]}, 88) = 5327 [pid 5327] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5326] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5325] rt_sigprocmask(SIG_SETMASK, [], [pid 5327] <... rseq resumed>) = 0 [pid 5325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5327] set_robust_list(0x7f50e61579a0, 24 [pid 5326] <... futex resumed>) = 0 [pid 5325] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5327] <... set_robust_list resumed>) = 0 [pid 5325] <... futex resumed>) = 0 [pid 5327] rt_sigprocmask(SIG_SETMASK, [], [pid 5325] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5327] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5326] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5327] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5327] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5325] <... futex resumed>) = 0 [pid 5327] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5325] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5326] <... futex resumed>) = 0 [pid 5326] read(6, [pid 5325] <... futex resumed>) = 1 [pid 5325] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5325] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5327] <... futex resumed>) = 0 [pid 5325] <... futex resumed>) = 1 [pid 5325] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5327] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x2006d000} --- [pid 5326] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 257920 [pid 5326] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5326] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5327] +++ killed by SIGBUS +++ [pid 5326] +++ killed by SIGBUS +++ [pid 5325] <... futex resumed>) = ? [pid 5325] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5325, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./84/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./84/binderfs") = 0 umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./84/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./84") = 0 mkdir("./85", 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 5328 attached , child_tidptr=0x55555720b690) = 5328 [pid 5328] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5328] chdir("./85") = 0 [pid 5328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5328] setpgid(0, 0) = 0 [pid 5328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5328] write(3, "1000", 4) = 4 [pid 5328] close(3) = 0 [pid 5328] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5328] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5328] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5328] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5328] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5329 attached [pid 5329] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5328] <... clone3 resumed> => {parent_tid=[5329]}, 88) = 5329 [pid 5329] set_robust_list(0x7f50e61789a0, 24 [pid 5328] rt_sigprocmask(SIG_SETMASK, [], [pid 5329] <... set_robust_list resumed>) = 0 [pid 5329] rt_sigprocmask(SIG_SETMASK, [], [pid 5328] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5328] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5329] memfd_create("syzkaller", 0 [pid 5328] <... futex resumed>) = 0 [pid 5328] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5329] <... memfd_create resumed>) = 3 [pid 5329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [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"..., 1048576) = 1048576 [pid 5329] munmap(0x7f50ddd58000, 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] mkdir("./file0", 0777) = 0 [pid 5329] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5329] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5329] chdir("./file0") = 0 [pid 5329] ioctl(4, LOOP_CLR_FD) = 0 [pid 5329] close(4) = 0 [pid 5329] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5328] <... futex resumed>) = 0 [pid 5328] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5329] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5328] <... futex resumed>) = 0 [pid 5328] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5329] <... open resumed>) = 4 [pid 5329] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5329] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5328] <... futex resumed>) = 0 [ 135.943245][ T5329] loop0: detected capacity change from 0 to 2048 [ 135.959174][ T5329] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 135.971370][ T5329] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5328] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5329] <... futex resumed>) = 0 [pid 5329] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5329] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5328] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5329] <... futex resumed>) = 0 [pid 5328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5329] ftruncate(5, 33587199 [pid 5328] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5329] <... ftruncate resumed>) = 0 [pid 5329] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5328] <... futex resumed>) = 0 [pid 5329] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5328] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5328] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5328] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5328] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5329] <... mmap resumed>) = 0x20000000 [pid 5328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} [pid 5329] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 5330 attached [pid 5329] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5330] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5328] <... clone3 resumed> => {parent_tid=[5330]}, 88) = 5330 [pid 5330] <... rseq resumed>) = 0 [pid 5328] rt_sigprocmask(SIG_SETMASK, [], [pid 5330] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5328] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5330] rt_sigprocmask(SIG_SETMASK, [], [pid 5328] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5330] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5328] <... futex resumed>) = 0 [pid 5330] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5328] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5330] <... openat resumed>) = 6 [pid 5330] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5328] <... futex resumed>) = 0 [pid 5330] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5328] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5329] <... futex resumed>) = 0 [pid 5328] <... futex resumed>) = 1 [pid 5328] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5329] read(6, [pid 5328] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5328] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5328] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5330] <... futex resumed>) = 0 [pid 5330] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5329] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5328] <... futex resumed>) = ? [pid 5330] +++ killed by SIGBUS +++ [pid 5329] +++ killed by SIGBUS +++ [pid 5328] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5328, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./85", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./85/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./85/binderfs") = 0 umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./85/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./85") = 0 mkdir("./86", 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 5331 attached , child_tidptr=0x55555720b690) = 5331 [pid 5331] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5331] chdir("./86") = 0 [pid 5331] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5331] setpgid(0, 0) = 0 [pid 5331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5331] write(3, "1000", 4) = 4 [pid 5331] close(3) = 0 [pid 5331] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5331] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5331] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5331] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5331] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5331] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5331] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5332 attached => {parent_tid=[5332]}, 88) = 5332 [pid 5331] rt_sigprocmask(SIG_SETMASK, [], [pid 5332] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5331] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5331] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5332] <... rseq resumed>) = 0 [pid 5332] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5332] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5332] memfd_create("syzkaller", 0) = 3 [pid 5332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5332] 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"..., 1048576) = 1048576 [pid 5332] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5332] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5332] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5332] close(3) = 0 [pid 5332] mkdir("./file0", 0777) = 0 [pid 5332] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5332] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5332] chdir("./file0") = 0 [pid 5332] ioctl(4, LOOP_CLR_FD) = 0 [pid 5332] close(4) = 0 [pid 5332] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5331] <... futex resumed>) = 0 [pid 5332] <... futex resumed>) = 1 [pid 5331] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5332] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5331] <... futex resumed>) = 0 [pid 5331] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5332] <... open resumed>) = 4 [pid 5332] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5331] <... futex resumed>) = 0 [pid 5332] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5331] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5332] <... futex resumed>) = 0 [pid 5331] <... futex resumed>) = 1 [pid 5332] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5332] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5331] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5332] <... futex resumed>) = 0 [pid 5331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5332] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5331] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5331] <... futex resumed>) = 0 [pid 5332] ftruncate(5, 33587199 [ 136.588057][ T5332] loop0: detected capacity change from 0 to 2048 [ 136.604056][ T5332] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 136.615861][ T5332] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5331] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5332] <... ftruncate resumed>) = 0 [pid 5332] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5332] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5331] <... futex resumed>) = 0 [pid 5331] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5331] <... futex resumed>) = 0 [pid 5332] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5331] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5331] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5331] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5332] <... mmap resumed>) = 0x20000000 [pid 5332] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5331] <... mprotect resumed>) = 0 [pid 5332] <... futex resumed>) = 0 [pid 5331] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5332] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5331] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5331] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5333 attached [pid 5333] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5331] <... clone3 resumed> => {parent_tid=[5333]}, 88) = 5333 [pid 5333] <... rseq resumed>) = 0 [pid 5331] rt_sigprocmask(SIG_SETMASK, [], [pid 5333] set_robust_list(0x7f50e61579a0, 24 [pid 5331] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5333] <... set_robust_list resumed>) = 0 [pid 5331] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5333] rt_sigprocmask(SIG_SETMASK, [], [pid 5331] <... futex resumed>) = 0 [pid 5333] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5331] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5333] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5333] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5331] <... futex resumed>) = 0 [pid 5333] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5331] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5332] <... futex resumed>) = 0 [pid 5331] <... futex resumed>) = 1 [pid 5332] read(6, [pid 5331] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5331] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5333] <... futex resumed>) = 0 [pid 5331] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5332] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5333] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5332] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5331] <... futex resumed>) = ? [pid 5333] +++ killed by SIGBUS +++ [pid 5332] <... futex resumed>) = ? [pid 5332] +++ killed by SIGBUS +++ [pid 5331] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5331, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./86", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./86/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./86/binderfs") = 0 umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./86/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./86") = 0 mkdir("./87", 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 5334 attached , child_tidptr=0x55555720b690) = 5334 [pid 5334] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5334] chdir("./87") = 0 [pid 5334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5334] setpgid(0, 0) = 0 [pid 5334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5334] write(3, "1000", 4) = 4 [pid 5334] close(3) = 0 [pid 5334] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5334] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5334] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5334] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5334] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5334] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5335 attached [pid 5335] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5334] <... clone3 resumed> => {parent_tid=[5335]}, 88) = 5335 [pid 5335] <... rseq resumed>) = 0 [pid 5334] rt_sigprocmask(SIG_SETMASK, [], [pid 5335] set_robust_list(0x7f50e61789a0, 24 [pid 5334] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5335] <... set_robust_list resumed>) = 0 [pid 5335] rt_sigprocmask(SIG_SETMASK, [], [pid 5334] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5334] <... futex resumed>) = 0 [pid 5335] memfd_create("syzkaller", 0 [pid 5334] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5335] <... memfd_create resumed>) = 3 [pid 5335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5335] 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"..., 1048576) = 1048576 [pid 5335] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5335] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5335] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5335] close(3) = 0 [pid 5335] mkdir("./file0", 0777) = 0 [pid 5335] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5335] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5335] chdir("./file0") = 0 [pid 5335] ioctl(4, LOOP_CLR_FD) = 0 [pid 5335] close(4) = 0 [pid 5335] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5334] <... futex resumed>) = 0 [pid 5334] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] <... futex resumed>) = 1 [pid 5334] <... futex resumed>) = 0 [pid 5335] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5334] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5335] <... open resumed>) = 4 [pid 5335] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5335] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5334] <... futex resumed>) = 0 [pid 5334] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] <... futex resumed>) = 0 [pid 5334] <... futex resumed>) = 1 [pid 5335] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5334] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5335] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5334] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5335] <... futex resumed>) = 0 [pid 5334] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] ftruncate(5, 33587199 [pid 5334] <... futex resumed>) = 0 [pid 5334] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5335] <... ftruncate resumed>) = 0 [pid 5335] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5334] <... futex resumed>) = 0 [pid 5335] <... futex resumed>) = 1 [pid 5334] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5334] <... futex resumed>) = 0 [ 137.286464][ T5335] loop0: detected capacity change from 0 to 2048 [ 137.302790][ T5335] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 137.314702][ T5335] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5334] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5334] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5334] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5334] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5336 attached [pid 5336] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5334] <... clone3 resumed> => {parent_tid=[5336]}, 88) = 5336 [pid 5336] <... rseq resumed>) = 0 [pid 5334] rt_sigprocmask(SIG_SETMASK, [], [pid 5336] set_robust_list(0x7f50e61579a0, 24 [pid 5334] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5336] <... set_robust_list resumed>) = 0 [pid 5334] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5336] rt_sigprocmask(SIG_SETMASK, [], [pid 5334] <... futex resumed>) = 0 [pid 5336] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5334] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5336] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5335] <... mmap resumed>) = 0x20000000 [pid 5336] <... openat resumed>) = 6 [pid 5335] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5336] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] <... futex resumed>) = 0 [pid 5336] <... futex resumed>) = 1 [pid 5335] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5334] <... futex resumed>) = 0 [pid 5336] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5334] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] <... futex resumed>) = 0 [pid 5334] <... futex resumed>) = 1 [pid 5335] read(6, [pid 5334] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5334] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5336] <... futex resumed>) = 0 [pid 5334] <... futex resumed>) = 1 [pid 5334] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5336] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20071000} --- [pid 5335] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 241536 [pid 5335] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = ? [pid 5334] <... futex resumed>) = ? [pid 5336] +++ killed by SIGBUS +++ [pid 5335] +++ killed by SIGBUS +++ [pid 5334] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5334, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./87", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./87/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./87/binderfs") = 0 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./87/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./87") = 0 mkdir("./88", 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 5337 attached , child_tidptr=0x55555720b690) = 5337 [pid 5337] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5337] chdir("./88") = 0 [pid 5337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5337] setpgid(0, 0) = 0 [pid 5337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5337] write(3, "1000", 4) = 4 [pid 5337] close(3) = 0 [pid 5337] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5337] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5337] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5337] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5337] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5337] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5338 attached [pid 5338] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5337] <... clone3 resumed> => {parent_tid=[5338]}, 88) = 5338 [pid 5338] <... rseq resumed>) = 0 [pid 5337] rt_sigprocmask(SIG_SETMASK, [], [pid 5338] set_robust_list(0x7f50e61789a0, 24 [pid 5337] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5338] <... set_robust_list resumed>) = 0 [pid 5337] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5338] rt_sigprocmask(SIG_SETMASK, [], [pid 5337] <... futex resumed>) = 0 [pid 5338] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5337] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5338] memfd_create("syzkaller", 0) = 3 [pid 5338] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5338] 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"..., 1048576) = 1048576 [pid 5338] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5338] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5338] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5338] close(3) = 0 [pid 5338] mkdir("./file0", 0777) = 0 [pid 5338] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5338] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5338] chdir("./file0") = 0 [pid 5338] ioctl(4, LOOP_CLR_FD) = 0 [pid 5338] close(4) = 0 [pid 5338] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5337] <... futex resumed>) = 0 [pid 5337] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5338] <... futex resumed>) = 1 [pid 5337] <... futex resumed>) = 0 [pid 5338] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [ 138.034431][ T5338] loop0: detected capacity change from 0 to 2048 [ 138.055723][ T5338] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 138.067975][ T5338] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5337] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5338] <... open resumed>) = 4 [pid 5338] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5337] <... futex resumed>) = 0 [pid 5338] <... futex resumed>) = 1 [pid 5337] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5338] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5337] <... futex resumed>) = 0 [pid 5338] <... open resumed>) = 5 [pid 5337] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5338] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5337] <... futex resumed>) = 0 [pid 5338] ftruncate(5, 33587199 [pid 5337] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5338] <... ftruncate resumed>) = 0 [pid 5338] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5337] <... futex resumed>) = 0 [pid 5338] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5337] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5338] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5337] <... futex resumed>) = 0 [pid 5337] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5337] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5337] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5337] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5337] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0} => {parent_tid=[5339]}, 88) = 5339 [pid 5337] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ./strace-static-x86_64: Process 5339 attached [pid 5337] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5339] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5337] <... futex resumed>) = 0 [pid 5339] <... rseq resumed>) = 0 [pid 5337] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5339] set_robust_list(0x7f50e61579a0, 24) = 0 [pid 5339] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5339] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5337] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5339] <... openat resumed>) = 6 [pid 5337] futex(0x7f50e62636ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5339] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5337] <... futex resumed>) = 0 [pid 5337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6116000 [pid 5337] mprotect(0x7f50e6117000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5337] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5339] <... futex resumed>) = 0 [pid 5338] <... mmap resumed>) = 0x20000000 [pid 5339] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5338] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5337] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6136990, parent_tid=0x7f50e6136990, exit_signal=0, stack=0x7f50e6116000, stack_size=0x20300, tls=0x7f50e61366c0} => {parent_tid=[5340]}, 88) = 5340 [pid 5337] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 5340 attached [pid 5338] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5337] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5340] rseq(0x7f50e6136fe0, 0x20, 0, 0x53053053) = 0 [pid 5337] futex(0x7f50e62636e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5340] set_robust_list(0x7f50e61369a0, 24 [pid 5337] <... futex resumed>) = 0 [pid 5340] <... set_robust_list resumed>) = 0 [pid 5337] futex(0x7f50e62636ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5340] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5340] read(6, [pid 5337] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5337] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5338] <... futex resumed>) = 0 [pid 5337] <... futex resumed>) = 1 [pid 5337] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5340] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5338] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20075000} --- [pid 5339] <... futex resumed>) = ? [pid 5337] <... futex resumed>) = ? [pid 5340] +++ killed by SIGBUS +++ [pid 5339] +++ killed by SIGBUS +++ [pid 5338] +++ killed by SIGBUS +++ [pid 5337] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5337, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=33 /* 0.33 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./88", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./88/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./88/binderfs") = 0 umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./88/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./88") = 0 mkdir("./89", 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 5341 attached , child_tidptr=0x55555720b690) = 5341 [pid 5341] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5341] chdir("./89") = 0 [pid 5341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5341] setpgid(0, 0) = 0 [pid 5341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5341] write(3, "1000", 4) = 4 [pid 5341] close(3) = 0 [pid 5341] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5341] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5341] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5341] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5341] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5341] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5341] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5341] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5342 attached [pid 5342] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5341] <... clone3 resumed> => {parent_tid=[5342]}, 88) = 5342 [pid 5342] <... rseq resumed>) = 0 [pid 5342] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5341] rt_sigprocmask(SIG_SETMASK, [], [pid 5342] rt_sigprocmask(SIG_SETMASK, [], [pid 5341] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5342] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5341] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5342] memfd_create("syzkaller", 0 [pid 5341] <... futex resumed>) = 0 [pid 5341] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5342] <... memfd_create resumed>) = 3 [pid 5342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5342] 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"..., 1048576) = 1048576 [pid 5342] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5342] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5342] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5342] close(3) = 0 [pid 5342] mkdir("./file0", 0777) = 0 [pid 5342] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5342] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5342] chdir("./file0") = 0 [pid 5342] ioctl(4, LOOP_CLR_FD) = 0 [pid 5342] close(4) = 0 [pid 5342] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5341] <... futex resumed>) = 0 [pid 5342] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5341] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5341] <... futex resumed>) = 0 [pid 5342] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5341] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5342] <... open resumed>) = 4 [pid 5342] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5342] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5341] <... futex resumed>) = 0 [pid 5341] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5342] <... futex resumed>) = 0 [pid 5341] <... futex resumed>) = 1 [pid 5342] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5341] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5342] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5342] <... futex resumed>) = 0 [pid 5341] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5342] ftruncate(5, 33587199 [pid 5341] <... futex resumed>) = 0 [pid 5341] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5342] <... ftruncate resumed>) = 0 [pid 5342] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5341] <... futex resumed>) = 0 [pid 5342] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5341] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5342] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5341] <... futex resumed>) = 0 [ 138.785216][ T5342] loop0: detected capacity change from 0 to 2048 [ 138.800137][ T5342] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 138.812165][ T5342] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5341] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5341] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5341] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5341] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5341] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5341] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5343 attached [pid 5342] <... mmap resumed>) = 0x20000000 [pid 5343] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5341] <... clone3 resumed> => {parent_tid=[5343]}, 88) = 5343 [pid 5342] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5343] <... rseq resumed>) = 0 [pid 5341] rt_sigprocmask(SIG_SETMASK, [], [pid 5343] set_robust_list(0x7f50e61579a0, 24 [pid 5341] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5343] <... set_robust_list resumed>) = 0 [pid 5342] <... futex resumed>) = 0 [pid 5341] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5343] rt_sigprocmask(SIG_SETMASK, [], [pid 5342] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5343] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5341] <... futex resumed>) = 0 [pid 5341] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5343] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5343] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5341] <... futex resumed>) = 0 [pid 5343] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5341] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5342] <... futex resumed>) = 0 [pid 5341] <... futex resumed>) = 1 [pid 5342] read(6, [pid 5341] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5341] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5341] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5343] <... futex resumed>) = 0 [pid 5341] <... futex resumed>) = 1 [pid 5341] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5343] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5342] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5342] +++ killed by SIGBUS +++ [pid 5343] +++ killed by SIGBUS +++ [pid 5341] <... futex resumed>) = ? [pid 5341] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5341, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=28 /* 0.28 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./89", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./89/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./89/binderfs") = 0 umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./89/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./89") = 0 mkdir("./90", 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 5344 attached [pid 5344] set_robust_list(0x55555720b6a0, 24 [pid 5062] <... clone resumed>, child_tidptr=0x55555720b690) = 5344 [pid 5344] <... set_robust_list resumed>) = 0 [pid 5344] chdir("./90") = 0 [pid 5344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5344] setpgid(0, 0) = 0 [pid 5344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5344] write(3, "1000", 4) = 4 [pid 5344] close(3) = 0 [pid 5344] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5344] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5344] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5344] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5344] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5344] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5345 attached => {parent_tid=[5345]}, 88) = 5345 [pid 5345] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5345] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5345] rt_sigprocmask(SIG_SETMASK, [], [pid 5344] rt_sigprocmask(SIG_SETMASK, [], [pid 5345] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5344] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5345] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5344] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5344] <... futex resumed>) = 0 [pid 5345] memfd_create("syzkaller", 0 [pid 5344] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5345] <... memfd_create resumed>) = 3 [pid 5345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5345] 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"..., 1048576) = 1048576 [pid 5345] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5345] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5345] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5345] close(3) = 0 [pid 5345] mkdir("./file0", 0777) = 0 [pid 5345] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5345] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5345] chdir("./file0") = 0 [pid 5345] ioctl(4, LOOP_CLR_FD) = 0 [pid 5345] close(4) = 0 [pid 5345] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5345] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5344] <... futex resumed>) = 0 [pid 5345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5344] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5345] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5344] <... futex resumed>) = 0 [ 139.477865][ T5345] loop0: detected capacity change from 0 to 2048 [ 139.488330][ T5345] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 139.500056][ T5345] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5344] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5345] <... open resumed>) = 4 [pid 5345] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5344] <... futex resumed>) = 0 [pid 5345] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5344] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5345] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5344] <... futex resumed>) = 0 [pid 5344] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5345] <... open resumed>) = 5 [pid 5345] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5345] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5344] <... futex resumed>) = 0 [pid 5345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5344] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5345] ftruncate(5, 33587199 [pid 5344] <... futex resumed>) = 0 [pid 5344] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5345] <... ftruncate resumed>) = 0 [pid 5345] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5344] <... futex resumed>) = 0 [pid 5344] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5344] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5345] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5344] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5344] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5344] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5344] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5346 attached [pid 5345] <... mmap resumed>) = 0x20000000 [pid 5346] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5345] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5346] <... rseq resumed>) = 0 [pid 5345] <... futex resumed>) = 0 [pid 5346] set_robust_list(0x7f50e61579a0, 24 [pid 5345] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5346] <... set_robust_list resumed>) = 0 [pid 5346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5344] <... clone3 resumed> => {parent_tid=[5346]}, 88) = 5346 [pid 5346] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5344] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5346] <... futex resumed>) = 0 [pid 5344] <... futex resumed>) = 1 [pid 5344] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5346] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5346] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5344] <... futex resumed>) = 0 [pid 5344] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5345] <... futex resumed>) = 0 [pid 5345] read(6, [pid 5344] <... futex resumed>) = 1 [pid 5344] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5344] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5346] <... futex resumed>) = 0 [pid 5344] <... futex resumed>) = 1 [pid 5344] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5346] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5345] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5344] <... futex resumed>) = ? [pid 5346] +++ killed by SIGBUS +++ [pid 5345] +++ killed by SIGBUS +++ [pid 5344] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5344, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=20 /* 0.20 s */} --- umount2("./90", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./90/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./90/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./90/binderfs") = 0 umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./90/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./90/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./90") = 0 mkdir("./91", 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 5347 attached , child_tidptr=0x55555720b690) = 5347 [pid 5347] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5347] chdir("./91") = 0 [pid 5347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5347] setpgid(0, 0) = 0 [pid 5347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5347] write(3, "1000", 4) = 4 [pid 5347] close(3) = 0 [pid 5347] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5347] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5347] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5347] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5347] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5347] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5347] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5347] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5348 attached [pid 5348] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5347] <... clone3 resumed> => {parent_tid=[5348]}, 88) = 5348 [pid 5348] <... rseq resumed>) = 0 [pid 5347] rt_sigprocmask(SIG_SETMASK, [], [pid 5348] set_robust_list(0x7f50e61789a0, 24 [pid 5347] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5348] <... set_robust_list resumed>) = 0 [pid 5347] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5348] rt_sigprocmask(SIG_SETMASK, [], [pid 5347] <... futex resumed>) = 0 [pid 5348] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5347] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5348] memfd_create("syzkaller", 0) = 3 [pid 5348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5348] 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"..., 1048576) = 1048576 [pid 5348] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5348] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5348] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5348] close(3) = 0 [pid 5348] mkdir("./file0", 0777) = 0 [pid 5348] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5348] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5348] chdir("./file0") = 0 [pid 5348] ioctl(4, LOOP_CLR_FD) = 0 [pid 5348] close(4) = 0 [pid 5348] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5348] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5347] <... futex resumed>) = 0 [pid 5347] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5348] <... futex resumed>) = 0 [pid 5348] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [ 140.199310][ T5348] loop0: detected capacity change from 0 to 2048 [ 140.215439][ T5348] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 140.227636][ T5348] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5347] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5348] <... open resumed>) = 4 [pid 5348] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5347] <... futex resumed>) = 0 [pid 5347] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5347] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5348] <... futex resumed>) = 1 [pid 5348] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 5348] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5348] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5347] <... futex resumed>) = 0 [pid 5347] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5348] <... futex resumed>) = 0 [pid 5347] <... futex resumed>) = 1 [pid 5348] ftruncate(5, 33587199 [pid 5347] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5348] <... ftruncate resumed>) = 0 [pid 5348] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5347] <... futex resumed>) = 0 [pid 5348] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5347] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5348] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5347] <... futex resumed>) = 0 [pid 5348] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5347] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5347] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5347] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5347] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE [pid 5348] <... mmap resumed>) = 0x20000000 [pid 5347] <... mprotect resumed>) = 0 [pid 5348] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5347] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5348] <... futex resumed>) = 0 [pid 5347] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5348] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5347] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5349 attached [pid 5349] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5347] <... clone3 resumed> => {parent_tid=[5349]}, 88) = 5349 [pid 5349] <... rseq resumed>) = 0 [pid 5347] rt_sigprocmask(SIG_SETMASK, [], [pid 5349] set_robust_list(0x7f50e61579a0, 24 [pid 5347] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5349] <... set_robust_list resumed>) = 0 [pid 5347] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5347] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5349] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5349] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5347] <... futex resumed>) = 0 [pid 5347] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5348] <... futex resumed>) = 0 [pid 5347] <... futex resumed>) = 1 [pid 5348] read(6, [pid 5347] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5347] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5349] <... futex resumed>) = 0 [pid 5347] <... futex resumed>) = 1 [pid 5347] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5349] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5348] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 237440 [pid 5347] <... futex resumed>) = ? [pid 5349] +++ killed by SIGBUS +++ [pid 5348] +++ killed by SIGBUS +++ [pid 5347] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5347, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=25 /* 0.25 s */} --- umount2("./91", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./91/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./91/binderfs") = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./91/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./91/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./91") = 0 mkdir("./92", 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 5350 attached , child_tidptr=0x55555720b690) = 5350 [pid 5350] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5350] chdir("./92") = 0 [pid 5350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5350] setpgid(0, 0) = 0 [pid 5350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5350] write(3, "1000", 4) = 4 [pid 5350] close(3) = 0 [pid 5350] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5350] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5350] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5350] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5350] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5350] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5351 attached [pid 5351] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5350] <... clone3 resumed> => {parent_tid=[5351]}, 88) = 5351 [pid 5351] set_robust_list(0x7f50e61789a0, 24 [pid 5350] rt_sigprocmask(SIG_SETMASK, [], [pid 5351] <... set_robust_list resumed>) = 0 [pid 5351] rt_sigprocmask(SIG_SETMASK, [], [pid 5350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5351] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5350] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5351] memfd_create("syzkaller", 0 [pid 5350] <... futex resumed>) = 0 [pid 5351] <... memfd_create resumed>) = 3 [pid 5351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5350] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5351] 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"..., 1048576) = 1048576 [pid 5351] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5351] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5351] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5351] close(3) = 0 [pid 5351] mkdir("./file0", 0777) = 0 [pid 5351] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5351] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5351] chdir("./file0") = 0 [pid 5351] ioctl(4, LOOP_CLR_FD) = 0 [pid 5351] close(4) = 0 [pid 5351] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5351] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5350] <... futex resumed>) = 0 [pid 5350] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5350] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5351] <... futex resumed>) = 0 [pid 5351] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [ 140.938824][ T5351] loop0: detected capacity change from 0 to 2048 [ 140.955195][ T5351] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 140.966984][ T5351] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5351] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5350] <... futex resumed>) = 0 [pid 5351] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5350] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5351] <... futex resumed>) = 0 [pid 5350] <... futex resumed>) = 1 [pid 5351] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5350] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5351] <... open resumed>) = 5 [pid 5351] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5350] <... futex resumed>) = 0 [pid 5350] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5351] <... futex resumed>) = 1 [pid 5350] <... futex resumed>) = 0 [pid 5351] ftruncate(5, 33587199 [pid 5350] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5351] <... ftruncate resumed>) = 0 [pid 5351] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5351] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5350] <... futex resumed>) = 0 [pid 5350] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5351] <... futex resumed>) = 0 [pid 5350] <... futex resumed>) = 1 [pid 5351] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5350] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5350] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5350] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5350] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5352 attached => {parent_tid=[5352]}, 88) = 5352 [pid 5352] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5350] rt_sigprocmask(SIG_SETMASK, [], [pid 5352] <... rseq resumed>) = 0 [pid 5350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5352] set_robust_list(0x7f50e61579a0, 24 [pid 5350] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5352] <... set_robust_list resumed>) = 0 [pid 5350] <... futex resumed>) = 0 [pid 5352] rt_sigprocmask(SIG_SETMASK, [], [pid 5350] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5352] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5352] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5352] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5350] <... futex resumed>) = 0 [pid 5352] read(6, [pid 5350] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5350] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5351] <... mmap resumed>) = 0x20000000 [pid 5351] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5351] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5350] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5350] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5350] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5351] <... futex resumed>) = 0 [pid 5351] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5352] <... read resumed> ) = ? [pid 5350] <... futex resumed>) = ? [pid 5352] +++ killed by SIGBUS +++ [pid 5351] +++ killed by SIGBUS +++ [pid 5350] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5350, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./92", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./92/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./92/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./92/binderfs") = 0 umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./92/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./92/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./92") = 0 mkdir("./93", 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 5353 attached , child_tidptr=0x55555720b690) = 5353 [pid 5353] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5353] chdir("./93") = 0 [pid 5353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5353] setpgid(0, 0) = 0 [pid 5353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5353] write(3, "1000", 4) = 4 [pid 5353] close(3) = 0 [pid 5353] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5353] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5353] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5353] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5353] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5353] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5353] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5353] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5354 attached => {parent_tid=[5354]}, 88) = 5354 [pid 5354] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5353] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5353] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5353] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5354] <... rseq resumed>) = 0 [pid 5354] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5354] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5354] memfd_create("syzkaller", 0) = 3 [pid 5354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5354] 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"..., 1048576) = 1048576 [pid 5354] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5354] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5354] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5354] close(3) = 0 [pid 5354] mkdir("./file0", 0777) = 0 [pid 5354] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5354] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5354] chdir("./file0") = 0 [pid 5354] ioctl(4, LOOP_CLR_FD) = 0 [pid 5354] close(4) = 0 [pid 5354] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 141.588853][ T5354] loop0: detected capacity change from 0 to 2048 [ 141.613900][ T5354] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 141.626000][ T5354] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5354] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5353] <... futex resumed>) = 0 [pid 5353] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5354] <... futex resumed>) = 0 [pid 5353] <... futex resumed>) = 1 [pid 5354] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5353] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5354] <... open resumed>) = 4 [pid 5354] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5353] <... futex resumed>) = 0 [pid 5354] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5353] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5354] <... open resumed>) = 5 [pid 5353] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5354] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5353] <... futex resumed>) = 0 [pid 5353] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5354] ftruncate(5, 33587199 [pid 5353] <... futex resumed>) = 0 [pid 5353] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5354] <... ftruncate resumed>) = 0 [pid 5354] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5353] <... futex resumed>) = 0 [pid 5354] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5353] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5353] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5353] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5353] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5353] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5353] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5353] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5355 attached => {parent_tid=[5355]}, 88) = 5355 [pid 5355] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053 [pid 5353] rt_sigprocmask(SIG_SETMASK, [], [pid 5355] <... rseq resumed>) = 0 [pid 5353] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5355] set_robust_list(0x7f50e61579a0, 24 [pid 5353] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5355] <... set_robust_list resumed>) = 0 [pid 5353] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5355] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5355] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5355] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5354] <... mmap resumed>) = 0x20000000 [pid 5355] <... futex resumed>) = 1 [pid 5354] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5353] <... futex resumed>) = 0 [pid 5355] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5353] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5353] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5354] <... futex resumed>) = 1 [pid 5353] <... futex resumed>) = 0 [pid 5354] read(6, [pid 5353] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5353] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5355] <... futex resumed>) = 0 [pid 5353] <... futex resumed>) = 1 [pid 5353] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5355] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20076000} --- [pid 5354] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 221056 [pid 5353] <... futex resumed>) = ? [pid 5355] +++ killed by SIGBUS +++ [pid 5354] +++ killed by SIGBUS +++ [pid 5353] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5353, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=28 /* 0.28 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./93", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./93/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./93/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./93/binderfs") = 0 umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./93/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./93/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./93") = 0 mkdir("./94", 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 5356 attached , child_tidptr=0x55555720b690) = 5356 [pid 5356] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5356] chdir("./94") = 0 [pid 5356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5356] setpgid(0, 0) = 0 [pid 5356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5356] write(3, "1000", 4) = 4 [pid 5356] close(3) = 0 [pid 5356] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5356] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5356] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5356] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5356] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5356] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5356] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5356] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5357 attached [pid 5357] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053 [pid 5356] <... clone3 resumed> => {parent_tid=[5357]}, 88) = 5357 [pid 5357] <... rseq resumed>) = 0 [pid 5357] set_robust_list(0x7f50e61789a0, 24 [pid 5356] rt_sigprocmask(SIG_SETMASK, [], [pid 5357] <... set_robust_list resumed>) = 0 [pid 5356] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5357] rt_sigprocmask(SIG_SETMASK, [], [pid 5356] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5357] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5357] memfd_create("syzkaller", 0 [pid 5356] <... futex resumed>) = 0 [pid 5356] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5357] <... memfd_create resumed>) = 3 [pid 5357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5357] 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"..., 1048576) = 1048576 [pid 5357] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5357] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5357] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5357] close(3) = 0 [pid 5357] mkdir("./file0", 0777) = 0 [pid 5357] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5357] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5357] chdir("./file0") = 0 [pid 5357] ioctl(4, LOOP_CLR_FD) = 0 [pid 5357] close(4) = 0 [pid 5357] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5356] <... futex resumed>) = 0 [pid 5356] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5357] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5356] <... futex resumed>) = 0 [pid 5356] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5357] <... open resumed>) = 4 [pid 5357] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5356] <... futex resumed>) = 0 [pid 5357] <... futex resumed>) = 1 [pid 5356] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5357] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5356] <... futex resumed>) = 0 [pid 5356] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5357] <... open resumed>) = 5 [ 142.310516][ T5357] loop0: detected capacity change from 0 to 2048 [ 142.326581][ T5357] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 142.338517][ T5357] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5357] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5356] <... futex resumed>) = 0 [pid 5356] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5356] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5357] <... futex resumed>) = 1 [pid 5357] ftruncate(5, 33587199) = 0 [pid 5357] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5356] <... futex resumed>) = 0 [pid 5357] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5356] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5356] <... futex resumed>) = 0 [pid 5357] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5356] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5356] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5356] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5356] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5357] <... mmap resumed>) = 0x20000000 [pid 5356] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5357] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5356] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5356] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5358 attached [pid 5358] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5356] <... clone3 resumed> => {parent_tid=[5358]}, 88) = 5358 [pid 5358] set_robust_list(0x7f50e61579a0, 24 [pid 5356] rt_sigprocmask(SIG_SETMASK, [], [pid 5358] <... set_robust_list resumed>) = 0 [pid 5356] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5358] rt_sigprocmask(SIG_SETMASK, [], [pid 5356] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5358] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5357] <... futex resumed>) = 0 [pid 5356] <... futex resumed>) = 0 [pid 5357] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5356] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5358] openat(AT_FDCWD, "/dev/full", O_RDONLY) = 6 [pid 5358] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5356] <... futex resumed>) = 0 [pid 5358] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5356] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5357] <... futex resumed>) = 0 [pid 5356] <... futex resumed>) = 1 [pid 5357] read(6, [pid 5356] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5356] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5358] <... futex resumed>) = 0 [pid 5356] <... futex resumed>) = 1 [pid 5356] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5358] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20074000} --- [pid 5357] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294967068) = 229248 [pid 5356] <... futex resumed>) = ? [pid 5357] +++ killed by SIGBUS +++ [pid 5358] +++ killed by SIGBUS +++ [pid 5356] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5356, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=26 /* 0.26 s */} --- umount2("./94", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94", 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, 0x55555720c730 /* 4 entries */, 32768) = 112 umount2("./94/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./94/binderfs") = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./94/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94/file0", 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, 0x555557214770 /* 2 entries */, 32768) = 48 getdents64(4, 0x555557214770 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./94/file0") = 0 getdents64(3, 0x55555720c730 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./94") = 0 mkdir("./95", 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 5359 attached , child_tidptr=0x55555720b690) = 5359 [pid 5359] set_robust_list(0x55555720b6a0, 24) = 0 [pid 5359] chdir("./95") = 0 [pid 5359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5359] setpgid(0, 0) = 0 [pid 5359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5359] write(3, "1000", 4) = 4 [pid 5359] close(3) = 0 [pid 5359] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5359] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5359] rt_sigaction(SIGRT_1, {sa_handler=0x7f50e61e2270, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f50e61d3420}, NULL, 8) = 0 [pid 5359] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6158000 [pid 5359] mprotect(0x7f50e6159000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5359] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5359] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6178990, parent_tid=0x7f50e6178990, exit_signal=0, stack=0x7f50e6158000, stack_size=0x20300, tls=0x7f50e61786c0}./strace-static-x86_64: Process 5360 attached => {parent_tid=[5360]}, 88) = 5360 [pid 5360] rseq(0x7f50e6178fe0, 0x20, 0, 0x53053053) = 0 [pid 5360] set_robust_list(0x7f50e61789a0, 24) = 0 [pid 5360] rt_sigprocmask(SIG_SETMASK, [], [pid 5359] rt_sigprocmask(SIG_SETMASK, [], [pid 5360] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5359] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5360] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5359] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5360] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5359] <... futex resumed>) = 0 [pid 5359] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5360] memfd_create("syzkaller", 0) = 3 [pid 5360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f50ddd58000 [pid 5360] 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"..., 1048576) = 1048576 [pid 5360] munmap(0x7f50ddd58000, 138412032) = 0 [pid 5360] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5360] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5360] close(3) = 0 [pid 5360] mkdir("./file0", 0777) = 0 [pid 5360] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_SYNCHRONOUS|MS_MANDLOCK|MS_LAZYTIME, "uid=ignore,noadinicb,novrs,iocharset=iso8859-1,uid=forget,iocharset=koi8-u,mode=00000000000000000002"...) = 0 [pid 5360] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5360] chdir("./file0") = 0 [pid 5360] ioctl(4, LOOP_CLR_FD) = 0 [pid 5360] close(4) = 0 [pid 5360] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5359] <... futex resumed>) = 0 [ 142.952395][ T5360] loop0: detected capacity change from 0 to 2048 [ 142.968220][ T5360] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 142.980460][ T5360] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5360] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5359] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5360] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000 [pid 5359] <... futex resumed>) = 0 [pid 5359] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5360] <... open resumed>) = 4 [pid 5360] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5359] <... futex resumed>) = 0 [pid 5360] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5359] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5360] <... futex resumed>) = 0 [pid 5360] open("./bus", O_RDWR|O_CREAT|O_SYNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 5359] <... futex resumed>) = 1 [pid 5360] <... open resumed>) = 5 [pid 5359] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5360] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5359] <... futex resumed>) = 0 [pid 5360] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5359] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5360] ftruncate(5, 33587199 [pid 5359] <... futex resumed>) = 0 [pid 5359] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5360] <... ftruncate resumed>) = 0 [pid 5360] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5359] <... futex resumed>) = 0 [pid 5360] <... futex resumed>) = 1 [pid 5359] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5360] mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 5359] <... futex resumed>) = 0 [pid 5359] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5359] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f50e6137000 [pid 5359] mprotect(0x7f50e6138000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5359] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5360] <... mmap resumed>) = 0x20000000 [pid 5360] futex(0x7f50e62636cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5359] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5359] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f50e6157990, parent_tid=0x7f50e6157990, exit_signal=0, stack=0x7f50e6137000, stack_size=0x20300, tls=0x7f50e61576c0}./strace-static-x86_64: Process 5361 attached [pid 5361] rseq(0x7f50e6157fe0, 0x20, 0, 0x53053053) = 0 [pid 5361] set_robust_list(0x7f50e61579a0, 24 [pid 5359] <... clone3 resumed> => {parent_tid=[5361]}, 88) = 5361 [pid 5361] <... set_robust_list resumed>) = 0 [pid 5359] rt_sigprocmask(SIG_SETMASK, [], [pid 5361] rt_sigprocmask(SIG_SETMASK, [], [pid 5359] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5361] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5359] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5359] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5360] <... futex resumed>) = 0 [pid 5361] openat(AT_FDCWD, "/dev/full", O_RDONLY [pid 5360] futex(0x7f50e62636c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5361] <... openat resumed>) = 6 [pid 5361] futex(0x7f50e62636dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5359] <... futex resumed>) = 0 [pid 5361] futex(0x7f50e62636d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5359] futex(0x7f50e62636c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5360] <... futex resumed>) = 0 [pid 5359] futex(0x7f50e62636cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5360] read(6, [pid 5359] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5359] futex(0x7f50e62636d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5361] <... futex resumed>) = 0 [pid 5359] <... futex resumed>) = 1 [pid 5359] futex(0x7f50e62636dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5361] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20072000} --- [pid 5360] <... read resumed>"\xff\xff\xff\xff\xff\xff\xff\xff\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x30\x78\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\