./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3778131055 <...> Warning: Permanently added '10.128.1.54' (ECDSA) to the list of known hosts. execve("./syz-executor3778131055", ["./syz-executor3778131055"], 0x7ffe0138f6d0 /* 10 vars */) = 0 brk(NULL) = 0x555556b3a000 brk(0x555556b3ad40) = 0x555556b3ad40 arch_prctl(ARCH_SET_FS, 0x555556b3a400) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x555556b3a6d0) = 5078 set_robust_list(0x555556b3a6e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7f265ea3ac40, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f265ea3a190}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f265ea3ace0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f265ea3a190}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3778131055", 4096) = 28 brk(0x555556b5bd40) = 0x555556b5bd40 brk(0x555556b5c000) = 0x555556b5c000 mprotect(0x7f265eafd000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f265ea34030, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f265ea3a190}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f265ea34030, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f265ea3a190}, NULL, 8) = 0 getpid() = 5078 mkdir("./syzkaller.aZ4Mhb", 0700) = 0 chmod("./syzkaller.aZ4Mhb", 0777) = 0 chdir("./syzkaller.aZ4Mhb") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b3a6d0) = 5079 ./strace-static-x86_64: Process 5079 attached [pid 5079] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5079] chdir("./0") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5079] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5079] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5081 attached , parent_tid=[5081], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5081 [pid 5079] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] set_robust_list(0x7f265ea299e0, 24 [pid 5079] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5081] <... set_robust_list resumed>) = 0 [pid 5081] memfd_create("syzkaller", 0) = 3 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5081] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5081] munmap(0x7f2656609000, 131072) = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5081] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5081] close(3) = 0 [pid 5081] mkdir("./file2", 0777) = 0 [ 66.535273][ T5081] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5081 'syz-executor377' [ 66.552810][ T5081] loop0: detected capacity change from 0 to 256 [ 66.564764][ T5081] exfat: Deprecated parameter 'utf8' [pid 5081] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5081] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5081] chdir("./file2") = 0 [pid 5081] ioctl(4, LOOP_CLR_FD) = 0 [pid 5081] close(4) = 0 [pid 5081] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5081] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5079] <... futex resumed>) = 0 [pid 5079] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] <... futex resumed>) = 0 [pid 5079] <... futex resumed>) = 1 [pid 5081] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5079] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] <... openat resumed>) = 4 [pid 5081] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5081] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5079] <... futex resumed>) = 0 [pid 5079] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] <... futex resumed>) = 0 [pid 5079] <... futex resumed>) = 1 [pid 5081] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5079] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] <... openat resumed>) = 5 [pid 5081] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5081] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5079] <... futex resumed>) = 0 [pid 5079] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5079] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] <... futex resumed>) = 0 [pid 5081] write(4, "\x00\x00", 2) = 2 [pid 5081] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5079] <... futex resumed>) = 0 [pid 5079] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5079] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5079] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5082 attached , parent_tid=[5082], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5082 [pid 5079] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5082] set_robust_list(0x7f26566289e0, 24 [pid 5081] <... futex resumed>) = 1 [pid 5081] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5082] <... set_robust_list resumed>) = 0 [pid 5081] <... mmap resumed>) = 0x20000000 [pid 5082] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5081] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5082] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5082] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5079] <... futex resumed>) = 0 [pid 5082] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5079] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] <... futex resumed>) = 0 [pid 5079] <... futex resumed>) = 1 [pid 5081] getdents64(-1, [pid 5079] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5081] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5079] <... futex resumed>) = 0 [pid 5081] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5079] exit_group(0 [pid 5082] <... futex resumed>) = ? [pid 5081] <... futex resumed>) = ? [pid 5079] <... exit_group resumed>) = ? [pid 5081] +++ exited with 0 +++ [pid 5082] +++ exited with 0 +++ [pid 5079] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5079, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./0/binderfs") = 0 [ 66.578890][ T5081] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./0/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./0/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./0/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./0/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5083 ./strace-static-x86_64: Process 5083 attached [pid 5083] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5083] chdir("./1") = 0 [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5083] setpgid(0, 0) = 0 [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1000", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5083] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5083] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5083] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5083] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5084], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5084 [pid 5083] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5083] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5084 attached [pid 5084] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5084] memfd_create("syzkaller", 0) = 3 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5084] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5084] munmap(0x7f2656609000, 131072) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5084] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5084] close(3) = 0 [pid 5084] mkdir("./file2", 0777) = 0 [pid 5084] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5084] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5084] chdir("./file2") = 0 [pid 5084] ioctl(4, LOOP_CLR_FD) = 0 [pid 5084] close(4) = 0 [pid 5084] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5083] <... futex resumed>) = 0 [pid 5084] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5083] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5083] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5084] <... openat resumed>) = 4 [pid 5084] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = 0 [pid 5083] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5083] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5084] <... futex resumed>) = 1 [pid 5084] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5084] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = 0 [pid 5083] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5083] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5084] <... futex resumed>) = 1 [pid 5084] write(4, "\x00\x00", 2) = 2 [pid 5084] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = 0 [pid 5083] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5083] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5083] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5083] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5083] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5085], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5085 [pid 5083] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5085 attached ) = 0 [pid 5083] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5085] set_robust_list(0x7f26566289e0, 24 [pid 5084] <... futex resumed>) = 1 [pid 5084] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5085] <... set_robust_list resumed>) = 0 [pid 5084] <... mmap resumed>) = 0x20000000 [pid 5084] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5084] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5085] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5085] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5085] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = 0 [pid 5083] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5083] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5084] <... futex resumed>) = 0 [pid 5084] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5084] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = 0 [pid 5083] exit_group(0) = ? [pid 5084] <... futex resumed>) = ? [pid 5084] +++ exited with 0 +++ [pid 5085] <... futex resumed>) = ? [pid 5085] +++ exited with 0 +++ [pid 5083] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./1/binderfs") = 0 [ 66.704470][ T5084] loop0: detected capacity change from 0 to 256 [ 66.716399][ T5084] exfat: Deprecated parameter 'utf8' [ 66.727436][ T5084] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./1/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./1/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./1/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./1/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/file2") = 0 getdents64(3, 0x555556b3b720 /* 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=0x555556b3a6d0) = 5086 ./strace-static-x86_64: Process 5086 attached [pid 5086] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5086] chdir("./2") = 0 [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5086] setpgid(0, 0) = 0 [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5086] write(3, "1000", 4) = 4 [pid 5086] close(3) = 0 [pid 5086] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5086] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5086] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5086] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5086] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5087], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5087 [pid 5086] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5086] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5087 attached [pid 5087] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5087] memfd_create("syzkaller", 0) = 3 [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5087] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5087] munmap(0x7f2656609000, 131072) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5087] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5087] close(3) = 0 [pid 5087] mkdir("./file2", 0777) = 0 [pid 5087] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5087] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5087] chdir("./file2") = 0 [pid 5087] ioctl(4, LOOP_CLR_FD) = 0 [pid 5087] close(4) = 0 [pid 5087] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5086] <... futex resumed>) = 0 [pid 5087] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5086] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5086] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5087] <... openat resumed>) = 4 [pid 5087] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] <... futex resumed>) = 0 [pid 5087] <... futex resumed>) = 1 [pid 5087] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5086] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5086] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5087] <... openat resumed>) = 5 [pid 5087] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5086] <... futex resumed>) = 0 [pid 5087] write(4, "\x00\x00", 2 [pid 5086] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5087] <... write resumed>) = 2 [pid 5086] <... futex resumed>) = 0 [pid 5086] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5087] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5087] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5086] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5086] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5086] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5086] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5087] <... mmap resumed>) = 0x20000000 [pid 5086] <... mprotect resumed>) = 0 [pid 5086] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5088], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5088 [pid 5086] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5088 attached ) = 0 [pid 5088] set_robust_list(0x7f26566289e0, 24 [pid 5086] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5088] <... set_robust_list resumed>) = 0 [pid 5088] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5088] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [ 66.815714][ T5087] loop0: detected capacity change from 0 to 256 [ 66.826530][ T5087] exfat: Deprecated parameter 'utf8' [ 66.837946][ T5087] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5087] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5086] <... futex resumed>) = 0 [pid 5088] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5087] <... futex resumed>) = 0 [pid 5086] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5087] getdents64(-1, [pid 5086] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5087] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5087] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5086] <... futex resumed>) = 0 [pid 5087] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5086] exit_group(0 [pid 5088] <... futex resumed>) = ? [pid 5087] <... futex resumed>) = ? [pid 5086] <... exit_group resumed>) = ? [pid 5088] +++ exited with 0 +++ [pid 5087] +++ exited with 0 +++ [pid 5086] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./2/binderfs") = 0 umount2("./2/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./2/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./2/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./2/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5089 ./strace-static-x86_64: Process 5089 attached [pid 5089] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5089] chdir("./3") = 0 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5089] setpgid(0, 0) = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5089] write(3, "1000", 4) = 4 [pid 5089] close(3) = 0 [pid 5089] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5089] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5089] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5089] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5090 attached , parent_tid=[5090], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5090 [pid 5089] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5090] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5090] memfd_create("syzkaller", 0) = 3 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5090] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5090] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5090] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5090] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5090] chdir("./file2") = 0 [pid 5090] ioctl(4, LOOP_CLR_FD) = 0 [pid 5090] close(4) = 0 [pid 5090] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5089] <... futex resumed>) = 0 [pid 5089] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5090] <... futex resumed>) = 1 [pid 5090] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5090] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5089] <... futex resumed>) = 0 [pid 5089] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5090] <... futex resumed>) = 1 [pid 5090] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5090] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5089] <... futex resumed>) = 0 [pid 5089] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5090] write(4, "\x00\x00", 2) = 2 [pid 5090] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5090] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5089] <... futex resumed>) = 0 [pid 5089] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5089] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5089] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5090] <... futex resumed>) = 0 [pid 5089] <... mprotect resumed>) = 0 [pid 5089] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5091 attached [pid 5090] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5089] <... clone resumed>, parent_tid=[5091], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5091 [pid 5091] set_robust_list(0x7f26566289e0, 24 [pid 5090] <... mmap resumed>) = 0x20000000 [pid 5090] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5090] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5089] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] <... set_robust_list resumed>) = 0 [pid 5091] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5091] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5091] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5089] <... futex resumed>) = 0 [pid 5089] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5089] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5090] <... futex resumed>) = 0 [pid 5090] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5090] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5089] <... futex resumed>) = 0 [pid 5089] exit_group(0) = ? [pid 5090] <... futex resumed>) = ? [pid 5090] +++ exited with 0 +++ [pid 5091] <... futex resumed>) = ? [pid 5091] +++ exited with 0 +++ [pid 5089] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./3/binderfs") = 0 [ 66.951556][ T5090] loop0: detected capacity change from 0 to 256 [ 66.960547][ T5090] exfat: Deprecated parameter 'utf8' [ 66.972386][ T5090] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./3/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./3/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./3/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./3/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file2") = 0 getdents64(3, 0x555556b3b720 /* 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=0x555556b3a6d0) = 5092 ./strace-static-x86_64: Process 5092 attached [pid 5092] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5092] chdir("./4") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5092] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5092] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5093], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5093 [pid 5092] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5093 attached [pid 5093] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5093] memfd_create("syzkaller", 0) = 3 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5093] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5093] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5093] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5093] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5093] chdir("./file2") = 0 [pid 5093] ioctl(4, LOOP_CLR_FD) = 0 [pid 5093] close(4) = 0 [pid 5093] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... futex resumed>) = 0 [pid 5092] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] <... futex resumed>) = 1 [pid 5093] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5093] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... futex resumed>) = 0 [pid 5092] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] <... futex resumed>) = 1 [pid 5093] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5093] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... futex resumed>) = 0 [pid 5092] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] <... futex resumed>) = 1 [pid 5093] write(4, "\x00\x00", 2) = 2 [pid 5093] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... futex resumed>) = 0 [pid 5092] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5092] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5092] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5094], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5094 [pid 5092] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] <... futex resumed>) = 1 [pid 5093] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5093] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5093] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5094 attached [pid 5094] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5094] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5094] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5094] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... futex resumed>) = 0 [pid 5092] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5092] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5093] <... futex resumed>) = 0 [pid 5093] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5093] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... futex resumed>) = 0 [pid 5092] exit_group(0) = ? [pid 5093] <... futex resumed>) = ? [pid 5093] +++ exited with 0 +++ [pid 5094] <... futex resumed>) = ? [pid 5094] +++ exited with 0 +++ [pid 5092] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./4/binderfs") = 0 umount2("./4/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./4/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./4/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./4/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./4") = 0 mkdir("./5", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 67.067499][ T5093] loop0: detected capacity change from 0 to 256 [ 67.076974][ T5093] exfat: Deprecated parameter 'utf8' [ 67.089142][ T5093] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) 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=0x555556b3a6d0) = 5095 ./strace-static-x86_64: Process 5095 attached [pid 5095] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5095] chdir("./5") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5095] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5095] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5095] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5096], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5096 [pid 5095] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5095] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5096 attached [pid 5096] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5096] memfd_create("syzkaller", 0) = 3 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5096] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5096] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5096] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5096] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5096] chdir("./file2") = 0 [pid 5096] ioctl(4, LOOP_CLR_FD) = 0 [pid 5096] close(4) = 0 [pid 5096] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5095] <... futex resumed>) = 0 [pid 5095] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5095] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5096] <... futex resumed>) = 1 [pid 5096] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5096] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5095] <... futex resumed>) = 0 [pid 5096] <... futex resumed>) = 1 [pid 5095] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5095] <... futex resumed>) = 0 [pid 5095] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5096] <... openat resumed>) = 5 [pid 5096] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5095] <... futex resumed>) = 0 [pid 5096] write(4, "\x00\x00", 2 [pid 5095] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... write resumed>) = 2 [pid 5095] <... futex resumed>) = 0 [pid 5096] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5095] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5096] <... futex resumed>) = 0 [pid 5095] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5096] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5095] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... mmap resumed>) = 0x20000000 [pid 5095] <... futex resumed>) = 0 [pid 5096] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5095] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... futex resumed>) = 0 [pid 5095] <... futex resumed>) = 0 [pid 5096] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5095] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5095] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5095] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5097], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5097 [pid 5095] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5095] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5097 attached [pid 5097] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5097] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5097] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5097] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5095] <... futex resumed>) = 0 [pid 5095] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... futex resumed>) = 0 [pid 5095] <... futex resumed>) = 1 [pid 5096] getdents64(-1, [pid 5095] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5096] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5096] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5095] <... futex resumed>) = 0 [pid 5096] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5095] exit_group(0 [pid 5096] <... futex resumed>) = ? [pid 5095] <... exit_group resumed>) = ? [pid 5096] +++ exited with 0 +++ [pid 5097] <... futex resumed>) = ? [pid 5097] +++ exited with 0 +++ [pid 5095] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./5/binderfs") = 0 umount2("./5/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./5/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./5/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./5/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 [ 67.178358][ T5096] loop0: detected capacity change from 0 to 256 [ 67.188296][ T5096] exfat: Deprecated parameter 'utf8' [ 67.198954][ T5096] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) 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, child_tidptr=0x555556b3a6d0) = 5098 ./strace-static-x86_64: Process 5098 attached [pid 5098] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5098] chdir("./6") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5098] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5098] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5099 attached , parent_tid=[5099], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5099 [pid 5098] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5098] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5099] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5099] memfd_create("syzkaller", 0) = 3 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5099] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5099] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5099] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5099] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5099] chdir("./file2") = 0 [pid 5099] ioctl(4, LOOP_CLR_FD) = 0 [pid 5099] close(4) = 0 [pid 5099] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5098] <... futex resumed>) = 0 [pid 5098] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5098] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5099] <... futex resumed>) = 1 [pid 5099] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5099] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5098] <... futex resumed>) = 0 [pid 5098] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5098] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5099] <... futex resumed>) = 1 [pid 5099] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5099] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5098] <... futex resumed>) = 0 [pid 5099] <... futex resumed>) = 1 [pid 5098] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5099] write(4, "\x00\x00", 2 [pid 5098] <... futex resumed>) = 0 [pid 5099] <... write resumed>) = 2 [pid 5098] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5099] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5098] <... futex resumed>) = 0 [pid 5099] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5098] <... futex resumed>) = 0 [pid 5099] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5098] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5099] <... mmap resumed>) = 0x20000000 [pid 5098] <... mmap resumed>) = 0x7f2656608000 [pid 5099] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5098] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5099] <... futex resumed>) = 0 [pid 5098] <... mprotect resumed>) = 0 [pid 5099] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5100 attached [pid 5100] set_robust_list(0x7f26566289e0, 24 [pid 5098] <... clone resumed>, parent_tid=[5100], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5100 [pid 5100] <... set_robust_list resumed>) = 0 [pid 5098] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5100] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5098] <... futex resumed>) = 0 [pid 5100] openat(AT_FDCWD, "", O_RDONLY [pid 5098] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5100] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5100] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5100] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5098] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5098] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5099] <... futex resumed>) = 0 [pid 5099] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5099] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5098] <... futex resumed>) = 0 [pid 5099] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5098] exit_group(0 [pid 5100] <... futex resumed>) = ? [pid 5099] <... futex resumed>) = ? [pid 5098] <... exit_group resumed>) = ? [pid 5100] +++ exited with 0 +++ [pid 5099] +++ exited with 0 +++ [pid 5098] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 67.292961][ T5099] loop0: detected capacity change from 0 to 256 [ 67.302944][ T5099] exfat: Deprecated parameter 'utf8' [ 67.314165][ T5099] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) unlink("./6/binderfs") = 0 umount2("./6/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./6/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./6/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./6/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5101 ./strace-static-x86_64: Process 5101 attached [pid 5101] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5101] chdir("./7") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5101] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5101] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5102], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5102 [pid 5101] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5102 attached [pid 5102] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5102] memfd_create("syzkaller", 0) = 3 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5102] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5102] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5102] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5102] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5102] chdir("./file2") = 0 [pid 5102] ioctl(4, LOOP_CLR_FD) = 0 [pid 5102] close(4) = 0 [pid 5102] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5101] <... futex resumed>) = 0 [pid 5101] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5102] <... futex resumed>) = 1 [pid 5102] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5102] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5101] <... futex resumed>) = 0 [pid 5101] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5102] <... futex resumed>) = 1 [pid 5102] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5102] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5101] <... futex resumed>) = 0 [pid 5101] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5102] <... futex resumed>) = 1 [pid 5102] write(4, "\x00\x00", 2) = 2 [pid 5102] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5101] <... futex resumed>) = 0 [pid 5101] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5101] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5102] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5101] <... mprotect resumed>) = 0 [pid 5101] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5102] <... mmap resumed>) = 0x20000000 [pid 5101] <... clone resumed>, parent_tid=[5103], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5103 [pid 5101] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5102] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 5103 attached [pid 5103] set_robust_list(0x7f26566289e0, 24 [pid 5102] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5103] <... set_robust_list resumed>) = 0 [pid 5103] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5103] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5103] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5101] <... futex resumed>) = 0 [pid 5103] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5101] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5102] <... futex resumed>) = 0 [pid 5101] <... futex resumed>) = 1 [pid 5101] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5102] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5102] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5101] <... futex resumed>) = 0 [pid 5102] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5101] exit_group(0) = ? [pid 5102] <... futex resumed>) = ? [pid 5103] <... futex resumed>) = ? [pid 5102] +++ exited with 0 +++ [pid 5103] +++ exited with 0 +++ [pid 5101] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5101, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./7/binderfs") = 0 [ 67.407773][ T5102] loop0: detected capacity change from 0 to 256 [ 67.417980][ T5102] exfat: Deprecated parameter 'utf8' [ 67.430165][ T5102] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./7/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./7/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./7/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./7/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5104 ./strace-static-x86_64: Process 5104 attached [pid 5104] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5104] chdir("./8") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5104] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5104] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5105], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5105 [pid 5104] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5105 attached [pid 5105] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5105] memfd_create("syzkaller", 0) = 3 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5105] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5105] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5105] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5105] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5105] chdir("./file2") = 0 [pid 5105] ioctl(4, LOOP_CLR_FD) = 0 [pid 5105] close(4) = 0 [pid 5105] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5104] <... futex resumed>) = 0 [pid 5104] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5105] <... futex resumed>) = 1 [pid 5105] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5105] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5104] <... futex resumed>) = 0 [pid 5104] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5105] <... futex resumed>) = 1 [pid 5105] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5105] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5104] <... futex resumed>) = 0 [pid 5104] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5105] <... futex resumed>) = 1 [pid 5105] write(4, "\x00\x00", 2) = 2 [pid 5105] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5104] <... futex resumed>) = 0 [pid 5104] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5104] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5105] <... futex resumed>) = 1 [pid 5104] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5105] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5104] <... clone resumed>, parent_tid=[5106], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5106 [pid 5104] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5104] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5106 attached [pid 5105] <... mmap resumed>) = 0x20000000 [pid 5105] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5105] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5106] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5106] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5106] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5106] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5104] <... futex resumed>) = 0 [pid 5104] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5105] <... futex resumed>) = 0 [pid 5104] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5105] getdents64(-1, [pid 5106] <... futex resumed>) = 1 [pid 5105] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5106] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5105] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5104] <... futex resumed>) = 0 [pid 5105] <... futex resumed>) = 1 [pid 5104] exit_group(0) = ? [pid 5106] <... futex resumed>) = ? [pid 5106] +++ exited with 0 +++ [pid 5105] +++ exited with 0 +++ [pid 5104] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5104, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./8/binderfs") = 0 [ 67.525851][ T5105] loop0: detected capacity change from 0 to 256 [ 67.534758][ T5105] exfat: Deprecated parameter 'utf8' [ 67.546391][ T5105] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./8/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./8/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./8/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./8/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5107 ./strace-static-x86_64: Process 5107 attached [pid 5107] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5107] chdir("./9") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5107] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5107] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5108], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5108 [pid 5107] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5107] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5108 attached [pid 5108] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5108] memfd_create("syzkaller", 0) = 3 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5108] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5108] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5108] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5108] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] chdir("./file2") = 0 [pid 5108] ioctl(4, LOOP_CLR_FD) = 0 [pid 5108] close(4) = 0 [pid 5108] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5107] <... futex resumed>) = 0 [pid 5108] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5107] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5108] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5107] <... futex resumed>) = 0 [pid 5108] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5107] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5108] <... openat resumed>) = 4 [pid 5108] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5107] <... futex resumed>) = 0 [pid 5108] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5107] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5108] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5107] <... futex resumed>) = 0 [pid 5108] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5107] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5108] <... openat resumed>) = 5 [pid 5108] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5108] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5107] <... futex resumed>) = 0 [pid 5107] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5108] <... futex resumed>) = 0 [pid 5107] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5108] write(4, "\x00\x00", 2) = 2 [pid 5108] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5107] <... futex resumed>) = 0 [pid 5108] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5107] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5108] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5107] <... futex resumed>) = 0 [pid 5108] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5107] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5108] <... mmap resumed>) = 0x20000000 [pid 5107] <... futex resumed>) = 0 [pid 5108] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5108] <... futex resumed>) = 0 [pid 5107] <... mmap resumed>) = 0x7f2656608000 [pid 5108] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5107] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5107] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5109 attached , parent_tid=[5109], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5109 [pid 5107] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5107] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5109] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5109] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5109] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5109] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5107] <... futex resumed>) = 0 [pid 5109] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5107] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5108] <... futex resumed>) = 0 [pid 5107] <... futex resumed>) = 1 [pid 5108] getdents64(-1, [pid 5107] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5108] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5108] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5107] <... futex resumed>) = 0 [pid 5108] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5107] exit_group(0 [pid 5109] <... futex resumed>) = ? [pid 5108] <... futex resumed>) = ? [pid 5107] <... exit_group resumed>) = ? [pid 5109] +++ exited with 0 +++ [pid 5108] +++ exited with 0 +++ [pid 5107] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5107, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./9/binderfs") = 0 umount2("./9/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 67.643279][ T5108] loop0: detected capacity change from 0 to 256 [ 67.653580][ T5108] exfat: Deprecated parameter 'utf8' [ 67.663245][ T5108] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./9/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./9/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./9/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5110 ./strace-static-x86_64: Process 5110 attached [pid 5110] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5110] chdir("./10") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5110] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5110] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5111], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5111 [pid 5110] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5111 attached [pid 5111] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5111] memfd_create("syzkaller", 0) = 3 [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5111] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5111] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5111] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5111] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5111] chdir("./file2") = 0 [pid 5111] ioctl(4, LOOP_CLR_FD) = 0 [pid 5111] close(4) = 0 [pid 5111] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5110] <... futex resumed>) = 0 [pid 5110] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5111] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5111] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5110] <... futex resumed>) = 0 [pid 5110] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5111] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5111] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5110] <... futex resumed>) = 0 [pid 5110] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5111] write(4, "\x00\x00", 2) = 2 [pid 5111] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5110] <... futex resumed>) = 0 [pid 5110] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5110] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5110] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5112 attached [pid 5112] set_robust_list(0x7f26566289e0, 24 [pid 5110] <... clone resumed>, parent_tid=[5112], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5112 [pid 5112] <... set_robust_list resumed>) = 0 [pid 5111] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5110] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5110] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5111] <... mmap resumed>) = 0x20000000 [pid 5112] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5111] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5112] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5111] <... futex resumed>) = 0 [pid 5112] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5111] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5112] <... futex resumed>) = 1 [pid 5110] <... futex resumed>) = 0 [pid 5110] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5112] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5111] <... futex resumed>) = 0 [pid 5110] <... futex resumed>) = 1 [pid 5111] getdents64(-1, [pid 5110] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5111] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5111] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5110] <... futex resumed>) = 0 [pid 5111] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5110] exit_group(0 [pid 5112] <... futex resumed>) = ? [pid 5110] <... exit_group resumed>) = ? [pid 5111] <... futex resumed>) = ? [pid 5112] +++ exited with 0 +++ [pid 5111] +++ exited with 0 +++ [pid 5110] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./10/binderfs") = 0 [ 67.764509][ T5111] loop0: detected capacity change from 0 to 256 [ 67.775439][ T5111] exfat: Deprecated parameter 'utf8' [ 67.786234][ T5111] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./10/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./10/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./10/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./10/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5113 ./strace-static-x86_64: Process 5113 attached [pid 5113] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5113] chdir("./11") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5113] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5113] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5113] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5114], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5114 [pid 5113] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5113] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5114 attached [pid 5114] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5114] memfd_create("syzkaller", 0) = 3 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5114] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5114] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5114] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5114] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] chdir("./file2") = 0 [pid 5114] ioctl(4, LOOP_CLR_FD) = 0 [pid 5114] close(4) = 0 [pid 5114] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5113] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5113] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5114] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5114] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5113] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5113] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5114] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5114] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5114] write(4, "\x00\x00", 2 [pid 5113] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5114] <... write resumed>) = 2 [pid 5113] <... futex resumed>) = 0 [pid 5114] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5113] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5114] <... futex resumed>) = 0 [pid 5113] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5114] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5113] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5114] <... mmap resumed>) = 0x20000000 [pid 5113] <... futex resumed>) = 0 [pid 5114] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5113] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5114] <... futex resumed>) = 0 [pid 5113] <... futex resumed>) = 0 [pid 5114] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5113] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5113] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5113] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5115 attached , parent_tid=[5115], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5115 [pid 5113] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5113] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5115] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5115] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [ 67.886482][ T5114] loop0: detected capacity change from 0 to 256 [ 67.906913][ T5114] exfat: Deprecated parameter 'utf8' [ 67.918381][ T5114] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5115] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5115] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5113] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5114] <... futex resumed>) = 0 [pid 5113] <... futex resumed>) = 1 [pid 5114] getdents64(-1, [pid 5113] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5114] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5114] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5113] <... futex resumed>) = 0 [pid 5114] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5113] exit_group(0 [pid 5115] ???( [pid 5114] <... futex resumed>) = ? [pid 5113] <... exit_group resumed>) = ? [pid 5115] <... ??? resumed>) = ? [pid 5114] +++ exited with 0 +++ [pid 5115] +++ exited with 0 +++ [pid 5113] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5113, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./11/binderfs") = 0 umount2("./11/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./11/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./11/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./11/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5116 ./strace-static-x86_64: Process 5116 attached [pid 5116] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5116] chdir("./12") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5116] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5116] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5117], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5117 [pid 5116] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5117 attached [pid 5117] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5117] memfd_create("syzkaller", 0) = 3 [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5117] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5117] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5117] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5117] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5117] chdir("./file2") = 0 [pid 5117] ioctl(4, LOOP_CLR_FD) = 0 [pid 5117] close(4) = 0 [pid 5117] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5116] <... futex resumed>) = 0 [pid 5116] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5117] <... futex resumed>) = 1 [pid 5117] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5117] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5116] <... futex resumed>) = 0 [pid 5116] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5117] <... futex resumed>) = 1 [pid 5117] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5117] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5116] <... futex resumed>) = 0 [pid 5116] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5117] <... futex resumed>) = 1 [pid 5117] write(4, "\x00\x00", 2) = 2 [pid 5117] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5116] <... futex resumed>) = 0 [pid 5116] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5116] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [ 68.007899][ T5117] loop0: detected capacity change from 0 to 256 [ 68.016934][ T5080] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 68.021769][ T5117] exfat: Deprecated parameter 'utf8' [ 68.042928][ T5117] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5116] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5118], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5118 [pid 5116] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5116] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5117] <... futex resumed>) = 1 [pid 5117] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5117] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5117] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5118 attached [pid 5118] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5118] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5118] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5118] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5116] <... futex resumed>) = 0 [pid 5116] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5116] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5117] <... futex resumed>) = 0 [pid 5117] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5117] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5116] <... futex resumed>) = 0 [pid 5116] exit_group(0) = ? [pid 5117] <... futex resumed>) = ? [pid 5117] +++ exited with 0 +++ [pid 5118] <... futex resumed>) = ? [pid 5118] +++ exited with 0 +++ [pid 5116] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./12/binderfs") = 0 umount2("./12/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./12/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./12/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./12/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5119 attached [pid 5119] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5119] chdir("./13") = 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" [pid 5078] <... clone resumed>, child_tidptr=0x555556b3a6d0) = 5119 [pid 5119] <... symlink resumed>) = 0 [pid 5119] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5119] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5119] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5120], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5120 [pid 5119] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5119] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5120 attached [pid 5120] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5120] memfd_create("syzkaller", 0) = 3 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5120] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5120] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5120] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5120] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] chdir("./file2") = 0 [pid 5120] ioctl(4, LOOP_CLR_FD) = 0 [pid 5120] close(4) = 0 [pid 5120] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5119] <... futex resumed>) = 0 [pid 5120] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5119] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5119] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5120] <... openat resumed>) = 4 [pid 5120] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5119] <... futex resumed>) = 0 [pid 5120] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5119] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5120] <... openat resumed>) = 5 [pid 5119] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5120] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5119] <... futex resumed>) = 0 [pid 5120] write(4, "\x00\x00", 2 [pid 5119] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] <... write resumed>) = 2 [pid 5119] <... futex resumed>) = 0 [pid 5120] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5119] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5120] <... futex resumed>) = 0 [pid 5119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5120] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5119] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] <... mmap resumed>) = 0x20000000 [pid 5119] <... futex resumed>) = 0 [pid 5120] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5119] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] <... futex resumed>) = 0 [pid 5119] <... futex resumed>) = 0 [pid 5120] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5119] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5119] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5121], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5121 [pid 5119] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5119] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5121 attached [pid 5121] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5121] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5121] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5121] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5119] <... futex resumed>) = 0 [pid 5119] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] <... futex resumed>) = 0 [pid 5119] <... futex resumed>) = 1 [pid 5120] getdents64(-1, [pid 5119] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5120] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5120] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5119] <... futex resumed>) = 0 [pid 5120] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5119] exit_group(0 [pid 5120] <... futex resumed>) = ? [pid 5119] <... exit_group resumed>) = ? [pid 5120] +++ exited with 0 +++ [pid 5121] +++ exited with 0 +++ [pid 5119] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./13/binderfs") = 0 [ 68.137650][ T5120] loop0: detected capacity change from 0 to 256 [ 68.147801][ T5120] exfat: Deprecated parameter 'utf8' [ 68.161096][ T5120] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./13/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./13/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./13/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./13/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5122 ./strace-static-x86_64: Process 5122 attached [pid 5122] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5122] chdir("./14") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5122] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5122] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5123], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5123 ./strace-static-x86_64: Process 5123 attached [pid 5123] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5123] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5122] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5123] <... futex resumed>) = 0 [pid 5123] memfd_create("syzkaller", 0 [pid 5122] futex(0x7f265eb037ac, 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) = 0x7f2656609000 [pid 5123] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5123] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5123] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5123] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5123] chdir("./file2") = 0 [pid 5123] ioctl(4, LOOP_CLR_FD) = 0 [pid 5123] close(4) = 0 [pid 5123] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5122] <... futex resumed>) = 0 [pid 5122] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5122] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5123] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5123] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5122] <... futex resumed>) = 0 [pid 5122] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5122] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5123] <... futex resumed>) = 1 [pid 5123] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5123] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5122] <... futex resumed>) = 0 [pid 5122] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5122] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5123] <... futex resumed>) = 1 [pid 5123] write(4, "\x00\x00", 2) = 2 [pid 5123] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5122] <... futex resumed>) = 0 [pid 5122] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5122] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5123] <... futex resumed>) = 1 [pid 5122] <... mmap resumed>) = 0x7f2656608000 [pid 5123] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5122] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5122] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5124 attached , parent_tid=[5124], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5124 [pid 5124] set_robust_list(0x7f26566289e0, 24 [pid 5122] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5124] <... set_robust_list resumed>) = 0 [pid 5122] <... futex resumed>) = 0 [pid 5122] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5124] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5123] <... mmap resumed>) = 0x20000000 [pid 5123] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5123] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5124] <... openat resumed>) = 6 [pid 5124] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5122] <... futex resumed>) = 0 [pid 5122] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5122] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5123] <... futex resumed>) = 0 [pid 5123] getdents64(6, NULL, 32776) = -1 EFAULT (Bad address) [pid 5123] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5122] <... futex resumed>) = 0 [pid 5123] <... futex resumed>) = 1 [pid 5122] exit_group(0 [pid 5124] <... futex resumed>) = 1 [pid 5122] <... exit_group resumed>) = ? [pid 5123] +++ exited with 0 +++ [pid 5124] +++ exited with 0 +++ [pid 5122] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./14/binderfs") = 0 [ 68.253989][ T5123] loop0: detected capacity change from 0 to 256 [ 68.262826][ T5123] exfat: Deprecated parameter 'utf8' [ 68.273530][ T5123] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./14/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./14/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./14/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./14/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5125 ./strace-static-x86_64: Process 5125 attached [pid 5125] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5125] chdir("./15") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5125] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5125] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5126 attached , parent_tid=[5126], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5126 [pid 5125] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5125] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5126] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5126] memfd_create("syzkaller", 0) = 3 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5126] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5126] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5126] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5126] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5126] chdir("./file2") = 0 [pid 5126] ioctl(4, LOOP_CLR_FD) = 0 [pid 5126] close(4) = 0 [pid 5126] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5126] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5125] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5125] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5126] <... openat resumed>) = 4 [pid 5126] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5126] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5125] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5125] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5126] <... openat resumed>) = 5 [pid 5126] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5126] write(4, "\x00\x00", 2 [pid 5125] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... write resumed>) = 2 [pid 5125] <... futex resumed>) = 0 [pid 5126] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5125] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5126] <... futex resumed>) = 0 [pid 5125] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5126] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5125] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... mmap resumed>) = 0x20000000 [pid 5125] <... futex resumed>) = 0 [pid 5126] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5125] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... futex resumed>) = 0 [pid 5125] <... futex resumed>) = 0 [pid 5126] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5125] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5125] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5127 attached , parent_tid=[5127], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5127 [pid 5127] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5127] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5125] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5127] <... futex resumed>) = 0 [pid 5125] <... futex resumed>) = 1 [pid 5127] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5125] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5127] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5127] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5127] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5125] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... futex resumed>) = 0 [pid 5125] <... futex resumed>) = 1 [pid 5126] getdents64(-1, [pid 5125] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5126] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5126] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5125] <... futex resumed>) = 0 [pid 5126] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5125] exit_group(0 [pid 5127] <... futex resumed>) = ? [pid 5126] <... futex resumed>) = ? [pid 5125] <... exit_group resumed>) = ? [pid 5127] +++ exited with 0 +++ [pid 5126] +++ exited with 0 +++ [pid 5125] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./15/binderfs") = 0 [ 68.384139][ T5126] loop0: detected capacity change from 0 to 256 [ 68.394689][ T5126] exfat: Deprecated parameter 'utf8' [ 68.404714][ T5126] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./15/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./15/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./15/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./15/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5128 ./strace-static-x86_64: Process 5128 attached [pid 5128] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5128] chdir("./16") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5128] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5128] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5129 attached [pid 5129] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5129] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5128] <... clone resumed>, parent_tid=[5129], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5129 [pid 5128] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5129] <... futex resumed>) = 0 [pid 5128] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5129] memfd_create("syzkaller", 0) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5129] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5129] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5129] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5129] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5129] chdir("./file2") = 0 [pid 5129] ioctl(4, LOOP_CLR_FD) = 0 [pid 5129] close(4) = 0 [pid 5129] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5128] <... futex resumed>) = 0 [pid 5129] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5128] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5128] <... futex resumed>) = 0 [pid 5129] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5128] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5129] <... openat resumed>) = 4 [pid 5129] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5128] <... futex resumed>) = 0 [pid 5129] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5128] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5128] <... futex resumed>) = 0 [pid 5128] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5129] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5129] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5128] <... futex resumed>) = 0 [pid 5128] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5128] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5129] write(4, "\x00\x00", 2) = 2 [pid 5129] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5128] <... futex resumed>) = 0 [pid 5128] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5128] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5128] <... futex resumed>) = 0 [pid 5128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5129] <... mmap resumed>) = 0x20000000 [pid 5128] <... mmap resumed>) = 0x7f2656608000 [pid 5128] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5129] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5128] <... mprotect resumed>) = 0 [pid 5128] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5130], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5130 ./strace-static-x86_64: Process 5130 attached [pid 5129] <... futex resumed>) = 0 [pid 5128] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5129] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5128] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5130] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5130] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5130] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5130] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5128] <... futex resumed>) = 0 [pid 5128] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] <... futex resumed>) = 0 [pid 5128] <... futex resumed>) = 1 [pid 5129] getdents64(-1, [pid 5128] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5129] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5129] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5128] <... futex resumed>) = 0 [pid 5129] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5128] exit_group(0 [pid 5129] <... futex resumed>) = ? [pid 5128] <... exit_group resumed>) = ? [pid 5129] +++ exited with 0 +++ [pid 5130] +++ exited with 0 +++ [pid 5128] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./16/binderfs") = 0 [ 68.511917][ T5129] loop0: detected capacity change from 0 to 256 [ 68.522314][ T5129] exfat: Deprecated parameter 'utf8' [ 68.532146][ T5129] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./16/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./16/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./16/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./16/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5131 ./strace-static-x86_64: Process 5131 attached [pid 5131] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5131] chdir("./17") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5131] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5131] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5131] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5132 attached , parent_tid=[5132], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5132 [pid 5132] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5132] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] <... futex resumed>) = 0 [pid 5131] <... futex resumed>) = 1 [pid 5131] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5132] memfd_create("syzkaller", 0) = 3 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5132] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5132] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5132] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5132] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5132] chdir("./file2") = 0 [pid 5132] ioctl(4, LOOP_CLR_FD) = 0 [pid 5132] close(4) = 0 [pid 5132] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5131] <... futex resumed>) = 0 [pid 5132] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5131] <... futex resumed>) = 0 [pid 5132] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5131] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5132] <... openat resumed>) = 4 [pid 5132] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5131] <... futex resumed>) = 0 [pid 5132] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5131] <... futex resumed>) = 0 [pid 5132] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5131] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5132] <... openat resumed>) = 5 [pid 5132] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5131] <... futex resumed>) = 0 [pid 5132] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5131] <... futex resumed>) = 0 [pid 5132] write(4, "\x00\x00", 2 [pid 5131] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5132] <... write resumed>) = 2 [pid 5132] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5131] <... futex resumed>) = 0 [pid 5132] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5131] <... futex resumed>) = 0 [pid 5132] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5131] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] <... mmap resumed>) = 0x20000000 [pid 5131] <... futex resumed>) = 0 [pid 5132] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5131] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5132] <... futex resumed>) = 0 [pid 5131] <... mmap resumed>) = 0x7f2656608000 [pid 5132] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5131] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5133], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5133 ./strace-static-x86_64: Process 5133 attached [pid 5131] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5131] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5133] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5133] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5133] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5133] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5131] <... futex resumed>) = 0 [pid 5133] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] <... futex resumed>) = 0 [pid 5131] <... futex resumed>) = 1 [pid 5132] getdents64(-1, [pid 5131] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5132] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5132] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5131] <... futex resumed>) = 0 [pid 5132] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5131] exit_group(0 [pid 5133] <... futex resumed>) = ? [pid 5132] <... futex resumed>) = ? [pid 5131] <... exit_group resumed>) = ? [pid 5133] +++ exited with 0 +++ [pid 5132] +++ exited with 0 +++ [pid 5131] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./17/binderfs") = 0 umount2("./17/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 68.637373][ T5132] loop0: detected capacity change from 0 to 256 [ 68.647575][ T5132] exfat: Deprecated parameter 'utf8' [ 68.658626][ T5132] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./17/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./17/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./17/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5134 ./strace-static-x86_64: Process 5134 attached [pid 5134] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5134] chdir("./18") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5134] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5134] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5135], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5135 [pid 5134] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5134] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5135 attached [pid 5135] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5135] memfd_create("syzkaller", 0) = 3 [pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5135] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5135] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5135] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5135] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5135] chdir("./file2") = 0 [pid 5135] ioctl(4, LOOP_CLR_FD) = 0 [pid 5135] close(4) = 0 [pid 5135] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5134] <... futex resumed>) = 0 [pid 5135] <... futex resumed>) = 1 [pid 5134] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5134] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5135] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5135] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5134] <... futex resumed>) = 0 [pid 5134] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5134] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5135] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5135] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5134] <... futex resumed>) = 0 [pid 5134] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5134] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5135] <... futex resumed>) = 1 [pid 5135] write(4, "\x00\x00", 2) = 2 [pid 5135] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5134] <... futex resumed>) = 0 [pid 5135] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5134] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5135] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5134] <... futex resumed>) = 0 [pid 5135] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5134] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5135] <... mmap resumed>) = 0x20000000 [pid 5134] <... futex resumed>) = 0 [pid 5135] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5135] <... futex resumed>) = 0 [pid 5135] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5134] <... mmap resumed>) = 0x7f2656608000 [pid 5134] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5134] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5136 attached [pid 5136] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5136] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5134] <... clone resumed>, parent_tid=[5136], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5136 [pid 5134] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5136] <... futex resumed>) = 0 [pid 5134] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5136] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5136] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5136] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5136] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5134] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5135] <... futex resumed>) = 0 [pid 5134] <... futex resumed>) = 1 [pid 5135] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5134] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5135] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5135] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5134] exit_group(0 [pid 5135] <... futex resumed>) = ? [pid 5134] <... exit_group resumed>) = ? [pid 5136] <... futex resumed>) = ? [pid 5135] +++ exited with 0 +++ [pid 5136] +++ exited with 0 +++ [pid 5134] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./18/binderfs") = 0 [ 68.741975][ T5135] loop0: detected capacity change from 0 to 256 [ 68.750977][ T5135] exfat: Deprecated parameter 'utf8' [ 68.762940][ T5135] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./18/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./18/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./18/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./18/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5137 ./strace-static-x86_64: Process 5137 attached [pid 5137] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5137] chdir("./19") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5137] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5137] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5137] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5138 attached [pid 5138] set_robust_list(0x7f265ea299e0, 24 [pid 5137] <... clone resumed>, parent_tid=[5138], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5138 [pid 5138] <... set_robust_list resumed>) = 0 [pid 5137] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5137] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5138] memfd_create("syzkaller", 0) = 3 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5138] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5138] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5138] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5138] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5138] chdir("./file2") = 0 [pid 5138] ioctl(4, LOOP_CLR_FD) = 0 [pid 5138] close(4) = 0 [pid 5138] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5138] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5137] <... futex resumed>) = 0 [pid 5138] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5137] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5138] <... openat resumed>) = 4 [pid 5138] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5138] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5137] <... futex resumed>) = 0 [pid 5138] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5137] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5138] <... openat resumed>) = 5 [pid 5138] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5138] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5137] <... futex resumed>) = 0 [pid 5138] write(4, "\x00\x00", 2 [pid 5137] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5138] <... write resumed>) = 2 [pid 5138] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5138] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5137] <... futex resumed>) = 0 [pid 5138] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5137] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] <... mmap resumed>) = 0x20000000 [pid 5137] <... futex resumed>) = 0 [pid 5138] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5137] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5138] <... futex resumed>) = 0 [pid 5137] <... mmap resumed>) = 0x7f2656608000 [pid 5138] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5137] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5139], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5139 [pid 5137] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5137] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5139 attached [pid 5139] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5139] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5139] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5139] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5137] <... futex resumed>) = 0 [pid 5137] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] <... futex resumed>) = 0 [pid 5137] <... futex resumed>) = 1 [pid 5138] getdents64(-1, [pid 5137] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5138] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5138] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5137] <... futex resumed>) = 0 [pid 5138] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] exit_group(0 [pid 5138] <... futex resumed>) = ? [pid 5137] <... exit_group resumed>) = ? [pid 5138] +++ exited with 0 +++ [pid 5139] <... futex resumed>) = ? [pid 5139] +++ exited with 0 +++ [pid 5137] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./19/binderfs") = 0 [ 68.873237][ T5138] loop0: detected capacity change from 0 to 256 [ 68.883328][ T5138] exfat: Deprecated parameter 'utf8' [ 68.892873][ T5138] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./19/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./19/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./19/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./19/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5140 ./strace-static-x86_64: Process 5140 attached [pid 5140] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5140] chdir("./20") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5140] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5140] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5141 attached , parent_tid=[5141], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5141 [pid 5141] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5141] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5140] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5141] <... futex resumed>) = 0 [pid 5140] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5141] memfd_create("syzkaller", 0) = 3 [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5141] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5141] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5141] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5141] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5141] chdir("./file2") = 0 [pid 5141] ioctl(4, LOOP_CLR_FD) = 0 [pid 5141] close(4) = 0 [pid 5141] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5140] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5141] <... futex resumed>) = 1 [pid 5141] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5141] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5140] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5141] <... futex resumed>) = 1 [pid 5141] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5141] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5140] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5141] <... futex resumed>) = 1 [pid 5141] write(4, "\x00\x00", 2) = 2 [pid 5141] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5140] <... futex resumed>) = 0 [pid 5140] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5141] <... futex resumed>) = 1 [pid 5140] <... futex resumed>) = 0 [pid 5141] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5140] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5141] <... mmap resumed>) = 0x20000000 [pid 5141] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5140] <... mmap resumed>) = 0x7f2656608000 [pid 5141] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5140] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5140] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5142 attached [pid 5142] set_robust_list(0x7f26566289e0, 24 [pid 5140] <... clone resumed>, parent_tid=[5142], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5142 [pid 5142] <... set_robust_list resumed>) = 0 [ 69.000833][ T5141] loop0: detected capacity change from 0 to 256 [ 69.021127][ T5141] exfat: Deprecated parameter 'utf8' [ 69.030542][ T5141] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5140] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5140] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5142] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5142] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5142] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5140] <... futex resumed>) = 0 [pid 5142] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5140] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5141] <... futex resumed>) = 0 [pid 5140] <... futex resumed>) = 1 [pid 5141] getdents64(-1, [pid 5140] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5141] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5141] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5140] <... futex resumed>) = 0 [pid 5141] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5140] exit_group(0 [pid 5141] <... futex resumed>) = ? [pid 5140] <... exit_group resumed>) = ? [pid 5142] <... futex resumed>) = ? [pid 5141] +++ exited with 0 +++ [pid 5142] +++ exited with 0 +++ [pid 5140] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./20/binderfs") = 0 umount2("./20/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./20/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./20/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./20/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5143 ./strace-static-x86_64: Process 5143 attached [pid 5143] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5143] chdir("./21") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5143] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5143] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5143] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5144 attached [pid 5144] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5144] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5143] <... clone resumed>, parent_tid=[5144], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5144 [pid 5143] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] <... futex resumed>) = 0 [pid 5143] <... futex resumed>) = 1 [pid 5144] memfd_create("syzkaller", 0 [pid 5143] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5144] <... memfd_create resumed>) = 3 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5144] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5144] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5144] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5144] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5144] chdir("./file2") = 0 [pid 5144] ioctl(4, LOOP_CLR_FD) = 0 [pid 5144] close(4) = 0 [pid 5144] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5143] <... futex resumed>) = 0 [pid 5144] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5143] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5143] <... futex resumed>) = 0 [pid 5144] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5143] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5144] <... openat resumed>) = 4 [pid 5144] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5143] <... futex resumed>) = 0 [pid 5144] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5143] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5143] <... futex resumed>) = 0 [pid 5144] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5143] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5144] <... openat resumed>) = 5 [pid 5144] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5143] <... futex resumed>) = 0 [pid 5143] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5143] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5144] <... futex resumed>) = 1 [pid 5144] write(4, "\x00\x00", 2) = 2 [pid 5144] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5143] <... futex resumed>) = 0 [pid 5144] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5143] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] <... mmap resumed>) = 0x20000000 [pid 5143] <... futex resumed>) = 0 [pid 5143] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5143] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5144] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5144] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5143] <... mmap resumed>) = 0x7f2656608000 [pid 5143] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5143] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5145], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5145 [pid 5143] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5143] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5145 attached [pid 5145] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5145] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5145] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5145] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5143] <... futex resumed>) = 0 [pid 5145] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5143] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] <... futex resumed>) = 0 [pid 5143] <... futex resumed>) = 1 [pid 5144] getdents64(-1, [pid 5143] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5144] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5144] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5143] <... futex resumed>) = 0 [pid 5144] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5143] exit_group(0 [pid 5144] <... futex resumed>) = ? [pid 5143] <... exit_group resumed>) = ? [pid 5144] +++ exited with 0 +++ [pid 5145] <... futex resumed>) = ? [pid 5145] +++ exited with 0 +++ [pid 5143] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 69.159726][ T5144] loop0: detected capacity change from 0 to 256 [ 69.170421][ T5144] exfat: Deprecated parameter 'utf8' [ 69.180354][ T5144] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) lstat("./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./21/binderfs") = 0 umount2("./21/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./21/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./21/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./21/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5146 attached , child_tidptr=0x555556b3a6d0) = 5146 [pid 5146] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5146] chdir("./22") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5146] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5146] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5147 attached , parent_tid=[5147], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5147 [pid 5147] set_robust_list(0x7f265ea299e0, 24 [pid 5146] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] <... set_robust_list resumed>) = 0 [pid 5146] <... futex resumed>) = 0 [pid 5146] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5147] memfd_create("syzkaller", 0) = 3 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5147] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5147] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5147] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5147] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5147] chdir("./file2") = 0 [pid 5147] ioctl(4, LOOP_CLR_FD) = 0 [pid 5147] close(4) = 0 [pid 5147] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5146] <... futex resumed>) = 0 [pid 5146] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5147] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5147] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5146] <... futex resumed>) = 0 [pid 5146] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5147] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5147] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5146] <... futex resumed>) = 0 [pid 5146] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5147] write(4, "\x00\x00", 2) = 2 [pid 5147] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5146] <... futex resumed>) = 0 [pid 5146] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5146] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5146] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5148 attached , parent_tid=[5148], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5148 [pid 5148] set_robust_list(0x7f26566289e0, 24 [pid 5147] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5146] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5148] <... set_robust_list resumed>) = 0 [pid 5147] <... mmap resumed>) = 0x20000000 [pid 5148] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5147] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5148] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5147] <... futex resumed>) = 0 [pid 5147] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5148] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5146] <... futex resumed>) = 0 [pid 5146] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5148] <... futex resumed>) = 1 [pid 5147] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5147] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5147] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5148] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5147] <... futex resumed>) = 1 [pid 5146] <... futex resumed>) = 0 [pid 5147] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5146] exit_group(0 [pid 5147] <... futex resumed>) = ? [pid 5146] <... exit_group resumed>) = ? [pid 5147] +++ exited with 0 +++ [pid 5148] <... futex resumed>) = ? [pid 5148] +++ exited with 0 +++ [pid 5146] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5146, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./22/binderfs") = 0 umount2("./22/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 69.269979][ T5147] loop0: detected capacity change from 0 to 256 [ 69.279016][ T5147] exfat: Deprecated parameter 'utf8' [ 69.289715][ T5147] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./22/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./22/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./22/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5149 ./strace-static-x86_64: Process 5149 attached [pid 5149] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5149] chdir("./23") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5149] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5149] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5149] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5150 attached , parent_tid=[5150], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5150 [pid 5149] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5149] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5150] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5150] memfd_create("syzkaller", 0) = 3 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5150] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5150] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5150] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5150] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5150] chdir("./file2") = 0 [pid 5150] ioctl(4, LOOP_CLR_FD) = 0 [pid 5150] close(4) = 0 [pid 5150] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5150] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5149] <... futex resumed>) = 0 [pid 5149] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5150] <... futex resumed>) = 0 [pid 5149] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5150] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5150] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5149] <... futex resumed>) = 0 [pid 5149] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5150] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5149] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5150] <... openat resumed>) = 5 [pid 5150] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5149] <... futex resumed>) = 0 [pid 5149] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5150] write(4, "\x00\x00", 2 [pid 5149] <... futex resumed>) = 0 [pid 5149] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5150] <... write resumed>) = 2 [pid 5150] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5149] <... futex resumed>) = 0 [pid 5149] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5149] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5150] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5149] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5149] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5150] <... mmap resumed>) = 0x20000000 [pid 5150] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5149] <... mprotect resumed>) = 0 [pid 5150] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5149] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5151], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5151 [pid 5149] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5151 attached ) = 0 [pid 5151] set_robust_list(0x7f26566289e0, 24 [pid 5149] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5151] <... set_robust_list resumed>) = 0 [pid 5151] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5151] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5151] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5149] <... futex resumed>) = 0 [pid 5151] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5149] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5150] <... futex resumed>) = 0 [pid 5149] <... futex resumed>) = 1 [pid 5150] getdents64(-1, [pid 5149] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5150] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5150] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5149] <... futex resumed>) = 0 [pid 5150] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5149] exit_group(0 [pid 5150] <... futex resumed>) = ? [pid 5149] <... exit_group resumed>) = ? [pid 5150] +++ exited with 0 +++ [pid 5151] <... futex resumed>) = ? [pid 5151] +++ exited with 0 +++ [pid 5149] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./23/binderfs") = 0 umount2("./23/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./23/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./23/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./23/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 [ 69.409063][ T5150] loop0: detected capacity change from 0 to 256 [ 69.418369][ T5150] exfat: Deprecated parameter 'utf8' [ 69.429010][ T5150] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) 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, child_tidptr=0x555556b3a6d0) = 5152 ./strace-static-x86_64: Process 5152 attached [pid 5152] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5152] chdir("./24") = 0 [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5152] setpgid(0, 0) = 0 [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5152] write(3, "1000", 4) = 4 [pid 5152] close(3) = 0 [pid 5152] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5152] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5152] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5152] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5152] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5153], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5153 ./strace-static-x86_64: Process 5153 attached [pid 5153] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5153] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5152] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5153] <... futex resumed>) = 0 [pid 5152] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5153] memfd_create("syzkaller", 0) = 3 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5153] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5153] munmap(0x7f2656609000, 131072) = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5153] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5153] close(3) = 0 [pid 5153] mkdir("./file2", 0777) = 0 [pid 5153] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5153] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5153] chdir("./file2") = 0 [pid 5153] ioctl(4, LOOP_CLR_FD) = 0 [pid 5153] close(4) = 0 [pid 5153] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5152] <... futex resumed>) = 0 [pid 5152] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5152] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5153] <... futex resumed>) = 1 [pid 5153] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5153] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5152] <... futex resumed>) = 0 [pid 5152] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5152] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5153] <... futex resumed>) = 1 [pid 5153] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5153] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5152] <... futex resumed>) = 0 [pid 5152] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5152] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5153] <... futex resumed>) = 1 [pid 5153] write(4, "\x00\x00", 2) = 2 [pid 5153] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5152] <... futex resumed>) = 0 [pid 5152] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5152] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5152] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5152] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5152] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5154], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5154 ./strace-static-x86_64: Process 5154 attached [pid 5152] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5154] set_robust_list(0x7f26566289e0, 24 [pid 5153] <... futex resumed>) = 1 [pid 5152] <... futex resumed>) = 0 [pid 5152] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5153] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5154] <... set_robust_list resumed>) = 0 [pid 5154] openat(AT_FDCWD, "./file0", O_RDONLY) = 6 [pid 5153] <... mmap resumed>) = 0x20000000 [pid 5153] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5153] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5154] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5152] <... futex resumed>) = 0 [pid 5152] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5152] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5153] <... futex resumed>) = 0 [pid 5153] getdents64(6, [pid 5154] <... futex resumed>) = 1 [pid 5153] <... getdents64 resumed>NULL, 32776) = -1 EFAULT (Bad address) [pid 5154] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5152] <... futex resumed>) = 0 [pid 5152] exit_group(0) = ? [pid 5154] <... futex resumed>) = ? [pid 5153] <... futex resumed>) = ? [pid 5154] +++ exited with 0 +++ [pid 5153] +++ exited with 0 +++ [pid 5152] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 69.519902][ T5153] loop0: detected capacity change from 0 to 256 [ 69.529164][ T5153] exfat: Deprecated parameter 'utf8' [ 69.540844][ T5153] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./24/binderfs") = 0 umount2("./24/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./24/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./24/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./24/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5155 ./strace-static-x86_64: Process 5155 attached [pid 5155] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5155] chdir("./25") = 0 [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5155] setpgid(0, 0) = 0 [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5155] write(3, "1000", 4) = 4 [pid 5155] close(3) = 0 [pid 5155] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5155] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5155] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5155] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5155] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5156], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5156 [pid 5155] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5155] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5156 attached [pid 5156] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5156] memfd_create("syzkaller", 0) = 3 [pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5156] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5156] munmap(0x7f2656609000, 131072) = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5156] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5156] close(3) = 0 [pid 5156] mkdir("./file2", 0777) = 0 [pid 5156] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5156] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5156] chdir("./file2") = 0 [pid 5156] ioctl(4, LOOP_CLR_FD) = 0 [pid 5156] close(4) = 0 [pid 5156] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5155] <... futex resumed>) = 0 [pid 5156] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5155] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5155] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5156] <... openat resumed>) = 4 [pid 5156] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5155] <... futex resumed>) = 0 [pid 5156] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5155] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5155] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5156] <... openat resumed>) = 5 [pid 5156] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5155] <... futex resumed>) = 0 [pid 5156] write(4, "\x00\x00", 2 [pid 5155] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5156] <... write resumed>) = 2 [pid 5155] <... futex resumed>) = 0 [pid 5156] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5155] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5156] <... futex resumed>) = 0 [pid 5155] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5156] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5155] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5156] <... mmap resumed>) = 0x20000000 [pid 5155] <... futex resumed>) = 0 [pid 5156] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5155] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5156] <... futex resumed>) = 0 [pid 5155] <... futex resumed>) = 0 [pid 5156] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5155] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5156] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5156] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5155] <... futex resumed>) = 0 [pid 5156] getdents64(-1, [pid 5155] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5156] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5155] <... futex resumed>) = 0 [pid 5156] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5155] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5156] <... futex resumed>) = 0 [pid 5155] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5156] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5155] exit_group(0 [pid 5156] <... futex resumed>) = ? [pid 5155] <... exit_group resumed>) = ? [pid 5156] +++ exited with 0 +++ [pid 5155] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5155, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./25/binderfs") = 0 umount2("./25/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./25/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./25/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./25/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 [ 69.652740][ T5156] loop0: detected capacity change from 0 to 256 [ 69.661986][ T5156] exfat: Deprecated parameter 'utf8' [ 69.671521][ T5156] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) 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, child_tidptr=0x555556b3a6d0) = 5157 ./strace-static-x86_64: Process 5157 attached [pid 5157] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5157] chdir("./26") = 0 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5157] setpgid(0, 0) = 0 [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5157] write(3, "1000", 4) = 4 [pid 5157] close(3) = 0 [pid 5157] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5157] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5157] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5157] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5157] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5158 attached , parent_tid=[5158], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5158 [pid 5157] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5157] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5158] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5158] memfd_create("syzkaller", 0) = 3 [pid 5158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5158] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5158] munmap(0x7f2656609000, 131072) = 0 [pid 5158] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5158] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5158] close(3) = 0 [pid 5158] mkdir("./file2", 0777) = 0 [pid 5158] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5158] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5158] chdir("./file2") = 0 [pid 5158] ioctl(4, LOOP_CLR_FD) = 0 [pid 5158] close(4) = 0 [pid 5158] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5157] <... futex resumed>) = 0 [pid 5158] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5157] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5158] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5157] <... futex resumed>) = 0 [pid 5158] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5157] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5158] <... openat resumed>) = 4 [pid 5158] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5157] <... futex resumed>) = 0 [pid 5158] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5157] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5157] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5158] <... openat resumed>) = 5 [pid 5158] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5157] <... futex resumed>) = 0 [pid 5158] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5157] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5158] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5157] <... futex resumed>) = 0 [pid 5158] write(4, "\x00\x00", 2 [pid 5157] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5158] <... write resumed>) = 2 [pid 5158] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5157] <... futex resumed>) = 0 [pid 5158] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5157] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5158] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5157] <... futex resumed>) = 0 [pid 5158] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5157] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5158] <... mmap resumed>) = 0x20000000 [pid 5157] <... futex resumed>) = 0 [pid 5158] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5157] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5158] <... futex resumed>) = 0 [pid 5157] <... mmap resumed>) = 0x7f2656608000 [pid 5158] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5157] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5157] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5159], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5159 [pid 5157] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5157] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5159 attached [pid 5159] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5159] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5159] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5159] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5157] <... futex resumed>) = 0 [pid 5159] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5157] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5158] <... futex resumed>) = 0 [pid 5157] <... futex resumed>) = 1 [pid 5158] getdents64(-1, [pid 5157] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5158] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5158] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5157] <... futex resumed>) = 0 [pid 5158] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5157] exit_group(0 [pid 5159] <... futex resumed>) = ? [pid 5158] <... futex resumed>) = ? [pid 5157] <... exit_group resumed>) = ? [pid 5159] +++ exited with 0 +++ [pid 5158] +++ exited with 0 +++ [pid 5157] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./26/binderfs") = 0 umount2("./26/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./26/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./26/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./26/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 [ 69.757816][ T5158] loop0: detected capacity change from 0 to 256 [ 69.767406][ T5158] exfat: Deprecated parameter 'utf8' [ 69.778512][ T5158] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) rmdir("./26/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5160 ./strace-static-x86_64: Process 5160 attached [pid 5160] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5160] chdir("./27") = 0 [pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5160] setpgid(0, 0) = 0 [pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5160] write(3, "1000", 4) = 4 [pid 5160] close(3) = 0 [pid 5160] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5160] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5160] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5160] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5160] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5161 attached , parent_tid=[5161], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5161 [pid 5161] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5161] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5160] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5161] <... futex resumed>) = 0 [pid 5160] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5161] memfd_create("syzkaller", 0) = 3 [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5161] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5161] munmap(0x7f2656609000, 131072) = 0 [pid 5161] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5161] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5161] close(3) = 0 [pid 5161] mkdir("./file2", 0777) = 0 [pid 5161] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5161] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5161] chdir("./file2") = 0 [pid 5161] ioctl(4, LOOP_CLR_FD) = 0 [pid 5161] close(4) = 0 [pid 5161] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5160] <... futex resumed>) = 0 [pid 5161] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5160] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5161] <... openat resumed>) = 4 [pid 5160] <... futex resumed>) = 0 [pid 5160] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5161] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5160] <... futex resumed>) = 0 [pid 5161] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5160] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5160] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5161] <... openat resumed>) = 5 [pid 5161] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5160] <... futex resumed>) = 0 [pid 5161] write(4, "\x00\x00", 2 [pid 5160] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5161] <... write resumed>) = 2 [pid 5160] <... futex resumed>) = 0 [pid 5161] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5160] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5161] <... futex resumed>) = 0 [pid 5160] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5161] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5160] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5161] <... mmap resumed>) = 0x20000000 [pid 5160] <... futex resumed>) = 0 [pid 5160] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5161] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5160] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5161] <... futex resumed>) = 0 [pid 5160] <... mmap resumed>) = 0x7f2656608000 [pid 5161] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5160] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5160] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5162 attached , parent_tid=[5162], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5162 [pid 5160] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5160] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5162] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5162] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5162] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5162] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5160] <... futex resumed>) = 0 [pid 5160] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5161] <... futex resumed>) = 0 [pid 5160] <... futex resumed>) = 1 [pid 5161] getdents64(-1, [pid 5160] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5161] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5161] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5160] <... futex resumed>) = 0 [pid 5162] <... futex resumed>) = 1 [pid 5161] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5160] exit_group(0 [pid 5161] <... futex resumed>) = ? [pid 5160] <... exit_group resumed>) = ? [pid 5162] +++ exited with 0 +++ [pid 5161] +++ exited with 0 +++ [pid 5160] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5160, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./27/binderfs") = 0 umount2("./27/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./27/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./27/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./27/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 69.866359][ T5161] loop0: detected capacity change from 0 to 256 [ 69.875127][ T5161] exfat: Deprecated parameter 'utf8' [ 69.886051][ T5161] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5163 attached , child_tidptr=0x555556b3a6d0) = 5163 [pid 5163] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5163] chdir("./28") = 0 [pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5163] setpgid(0, 0) = 0 [pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5163] write(3, "1000", 4) = 4 [pid 5163] close(3) = 0 [pid 5163] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5163] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5163] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5163] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5163] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5164 attached , parent_tid=[5164], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5164 [pid 5164] set_robust_list(0x7f265ea299e0, 24 [pid 5163] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5164] <... set_robust_list resumed>) = 0 [pid 5163] <... futex resumed>) = 0 [pid 5163] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5164] memfd_create("syzkaller", 0) = 3 [pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5164] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5164] munmap(0x7f2656609000, 131072) = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5164] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5164] close(3) = 0 [pid 5164] mkdir("./file2", 0777) = 0 [pid 5164] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5164] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5164] chdir("./file2") = 0 [pid 5164] ioctl(4, LOOP_CLR_FD) = 0 [pid 5164] close(4) = 0 [pid 5164] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5164] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5163] <... futex resumed>) = 0 [pid 5163] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5164] <... futex resumed>) = 0 [pid 5164] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5163] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5164] <... openat resumed>) = 4 [pid 5164] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5163] <... futex resumed>) = 0 [pid 5164] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5163] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5163] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5164] <... openat resumed>) = 5 [pid 5164] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5163] <... futex resumed>) = 0 [pid 5163] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5163] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5164] write(4, "\x00\x00", 2) = 2 [pid 5164] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5163] <... futex resumed>) = 0 [pid 5164] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5163] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5163] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5163] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [ 70.000212][ T5164] loop0: detected capacity change from 0 to 256 [ 70.021110][ T5164] exfat: Deprecated parameter 'utf8' [ 70.032345][ T5164] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5164] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5163] <... mmap resumed>) = 0x7f2656608000 [pid 5163] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5164] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5164] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5163] <... mprotect resumed>) = 0 [pid 5163] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5165 attached , parent_tid=[5165], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5165 [pid 5165] set_robust_list(0x7f26566289e0, 24 [pid 5163] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5165] <... set_robust_list resumed>) = 0 [pid 5163] <... futex resumed>) = 0 [pid 5163] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5165] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5165] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5165] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5163] <... futex resumed>) = 0 [pid 5165] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5163] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5164] <... futex resumed>) = 0 [pid 5163] <... futex resumed>) = 1 [pid 5164] getdents64(-1, [pid 5163] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5164] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5164] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5163] <... futex resumed>) = 0 [pid 5164] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5163] exit_group(0 [pid 5164] <... futex resumed>) = ? [pid 5163] <... exit_group resumed>) = ? [pid 5164] +++ exited with 0 +++ [pid 5165] <... futex resumed>) = ? [pid 5165] +++ exited with 0 +++ [pid 5163] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5163, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./28/binderfs") = 0 umount2("./28/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./28/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./28/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./28/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5166 ./strace-static-x86_64: Process 5166 attached [pid 5166] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5166] chdir("./29") = 0 [pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5166] setpgid(0, 0) = 0 [pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5166] write(3, "1000", 4) = 4 [pid 5166] close(3) = 0 [pid 5166] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5166] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5166] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5166] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5166] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5167], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5167 ./strace-static-x86_64: Process 5167 attached [pid 5167] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5167] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5166] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5167] <... futex resumed>) = 0 [pid 5167] memfd_create("syzkaller", 0 [pid 5166] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5167] <... memfd_create resumed>) = 3 [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5167] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5167] munmap(0x7f2656609000, 131072) = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5167] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5167] close(3) = 0 [pid 5167] mkdir("./file2", 0777) = 0 [pid 5167] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5167] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5167] chdir("./file2") = 0 [pid 5167] ioctl(4, LOOP_CLR_FD) = 0 [pid 5167] close(4) = 0 [pid 5167] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5166] <... futex resumed>) = 0 [pid 5167] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5166] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5167] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5166] <... futex resumed>) = 0 [pid 5167] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5166] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5167] <... openat resumed>) = 4 [pid 5167] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5167] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5166] <... futex resumed>) = 0 [pid 5166] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5167] <... futex resumed>) = 0 [pid 5166] <... futex resumed>) = 1 [pid 5167] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5166] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5167] <... openat resumed>) = 5 [pid 5167] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5166] <... futex resumed>) = 0 [pid 5167] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5166] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5167] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5166] <... futex resumed>) = 0 [pid 5167] write(4, "\x00\x00", 2 [pid 5166] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5167] <... write resumed>) = 2 [pid 5167] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5166] <... futex resumed>) = 0 [pid 5167] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5166] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5167] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5166] <... futex resumed>) = 0 [pid 5167] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5166] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5167] <... mmap resumed>) = 0x20000000 [pid 5166] <... futex resumed>) = 0 [pid 5167] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5166] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5167] <... futex resumed>) = 0 [pid 5166] <... mmap resumed>) = 0x7f2656608000 [pid 5167] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5166] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5166] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5168 attached , parent_tid=[5168], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5168 [pid 5168] set_robust_list(0x7f26566289e0, 24 [pid 5166] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5168] <... set_robust_list resumed>) = 0 [pid 5166] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5168] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5168] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5168] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5166] <... futex resumed>) = 0 [pid 5166] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5168] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5167] <... futex resumed>) = 0 [pid 5166] <... futex resumed>) = 1 [pid 5167] getdents64(-1, [pid 5166] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5167] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [ 70.129011][ T5167] loop0: detected capacity change from 0 to 256 [ 70.140995][ T5167] exfat: Deprecated parameter 'utf8' [ 70.153565][ T5167] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5167] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5166] <... futex resumed>) = 0 [pid 5167] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5166] exit_group(0 [pid 5168] <... futex resumed>) = ? [pid 5167] <... futex resumed>) = ? [pid 5166] <... exit_group resumed>) = ? [pid 5168] +++ exited with 0 +++ [pid 5167] +++ exited with 0 +++ [pid 5166] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./29/binderfs") = 0 umount2("./29/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./29/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./29/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./29/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5169 ./strace-static-x86_64: Process 5169 attached [pid 5169] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5169] chdir("./30") = 0 [pid 5169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5169] setpgid(0, 0) = 0 [pid 5169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5169] write(3, "1000", 4) = 4 [pid 5169] close(3) = 0 [pid 5169] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5169] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5169] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5169] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5169] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5170], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5170 [pid 5169] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5169] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5170 attached [pid 5170] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5170] memfd_create("syzkaller", 0) = 3 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5170] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5170] munmap(0x7f2656609000, 131072) = 0 [pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5170] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5170] close(3) = 0 [pid 5170] mkdir("./file2", 0777) = 0 [pid 5170] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5170] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5170] chdir("./file2") = 0 [pid 5170] ioctl(4, LOOP_CLR_FD) = 0 [pid 5170] close(4) = 0 [pid 5170] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] <... futex resumed>) = 0 [pid 5170] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5169] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5169] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5170] <... openat resumed>) = 4 [pid 5170] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] <... futex resumed>) = 0 [pid 5170] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5169] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5170] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5170] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5169] <... futex resumed>) = 0 [pid 5170] <... openat resumed>) = 5 [pid 5170] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5170] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5169] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5169] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5170] <... futex resumed>) = 0 [pid 5170] write(4, "\x00\x00", 2) = 2 [pid 5170] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] <... futex resumed>) = 0 [pid 5170] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5169] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5170] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5169] <... futex resumed>) = 0 [pid 5170] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5169] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5170] <... mmap resumed>) = 0x20000000 [pid 5169] <... futex resumed>) = 0 [pid 5169] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5170] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5169] <... mmap resumed>) = 0x7f2656608000 [pid 5170] <... futex resumed>) = 0 [pid 5169] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5170] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5169] <... mprotect resumed>) = 0 [pid 5169] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5171 attached , parent_tid=[5171], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5171 [pid 5169] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5169] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5171] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5171] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5171] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5171] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] <... futex resumed>) = 0 [pid 5171] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5169] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5170] <... futex resumed>) = 0 [pid 5169] <... futex resumed>) = 1 [pid 5170] getdents64(-1, [pid 5169] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5170] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5170] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] <... futex resumed>) = 0 [pid 5170] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5169] exit_group(0 [pid 5171] <... futex resumed>) = ? [pid 5170] <... futex resumed>) = ? [pid 5169] <... exit_group resumed>) = ? [pid 5171] +++ exited with 0 +++ [pid 5170] +++ exited with 0 +++ [pid 5169] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5169, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./30/binderfs") = 0 umount2("./30/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 70.257119][ T5170] loop0: detected capacity change from 0 to 256 [ 70.267531][ T5170] exfat: Deprecated parameter 'utf8' [ 70.279156][ T5170] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./30/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./30/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./30/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5172 ./strace-static-x86_64: Process 5172 attached [pid 5172] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5172] chdir("./31") = 0 [pid 5172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5172] setpgid(0, 0) = 0 [pid 5172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5172] write(3, "1000", 4) = 4 [pid 5172] close(3) = 0 [pid 5172] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5172] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5172] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5172] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5173 attached [pid 5173] set_robust_list(0x7f265ea299e0, 24 [pid 5172] <... clone resumed>, parent_tid=[5173], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5173 [pid 5173] <... set_robust_list resumed>) = 0 [pid 5172] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5172] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5173] memfd_create("syzkaller", 0) = 3 [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5173] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5173] munmap(0x7f2656609000, 131072) = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5173] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5173] close(3) = 0 [pid 5173] mkdir("./file2", 0777) = 0 [pid 5173] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5173] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5173] chdir("./file2") = 0 [pid 5173] ioctl(4, LOOP_CLR_FD) = 0 [pid 5173] close(4) = 0 [pid 5173] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5172] <... futex resumed>) = 0 [pid 5173] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5172] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5172] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5173] <... openat resumed>) = 4 [pid 5173] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5172] <... futex resumed>) = 0 [pid 5172] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5172] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5173] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5173] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5172] <... futex resumed>) = 0 [pid 5172] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5172] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5173] write(4, "\x00\x00", 2) = 2 [pid 5173] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5172] <... futex resumed>) = 0 [pid 5173] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5172] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5173] <... mmap resumed>) = 0x20000000 [pid 5172] <... futex resumed>) = 0 [pid 5172] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5173] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5173] <... futex resumed>) = 0 [pid 5172] <... mmap resumed>) = 0x7f2656608000 [pid 5173] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5172] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5172] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5174 attached [pid 5174] set_robust_list(0x7f26566289e0, 24 [pid 5172] <... clone resumed>, parent_tid=[5174], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5174 [pid 5174] <... set_robust_list resumed>) = 0 [pid 5172] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5174] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5172] <... futex resumed>) = 0 [pid 5174] openat(AT_FDCWD, "", O_RDONLY [pid 5172] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5174] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5174] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5174] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5172] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5172] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5173] <... futex resumed>) = 0 [pid 5172] <... futex resumed>) = 1 [pid 5173] getdents64(-1, [pid 5172] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5173] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5173] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5172] <... futex resumed>) = 0 [pid 5173] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5172] exit_group(0 [pid 5174] <... futex resumed>) = ? [pid 5173] <... futex resumed>) = ? [pid 5172] <... exit_group resumed>) = ? [pid 5174] +++ exited with 0 +++ [pid 5173] +++ exited with 0 +++ [pid 5172] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5172, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./31/binderfs") = 0 [ 70.381986][ T5173] loop0: detected capacity change from 0 to 256 [ 70.392176][ T5173] exfat: Deprecated parameter 'utf8' [ 70.403627][ T5173] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./31/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./31/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./31/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./31/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5175 ./strace-static-x86_64: Process 5175 attached [pid 5175] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5175] chdir("./32") = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5175] setpgid(0, 0) = 0 [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5175] write(3, "1000", 4) = 4 [pid 5175] close(3) = 0 [pid 5175] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5175] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5175] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5175] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5176 attached , parent_tid=[5176], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5176 [pid 5175] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5176] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5176] memfd_create("syzkaller", 0) = 3 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5176] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5176] munmap(0x7f2656609000, 131072) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5176] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5176] close(3) = 0 [pid 5176] mkdir("./file2", 0777) = 0 [pid 5176] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5176] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5176] chdir("./file2") = 0 [pid 5176] ioctl(4, LOOP_CLR_FD) = 0 [pid 5176] close(4) = 0 [pid 5176] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5175] <... futex resumed>) = 0 [pid 5175] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5176] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5176] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5175] <... futex resumed>) = 0 [pid 5175] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5176] <... futex resumed>) = 1 [pid 5176] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5176] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5175] <... futex resumed>) = 0 [pid 5175] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5176] <... futex resumed>) = 1 [pid 5176] write(4, "\x00\x00", 2) = 2 [pid 5176] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5175] <... futex resumed>) = 0 [pid 5175] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5175] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5175] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5177], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5177 [pid 5175] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5176] <... futex resumed>) = 1 [pid 5176] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0./strace-static-x86_64: Process 5177 attached [pid 5177] set_robust_list(0x7f26566289e0, 24 [pid 5176] <... mmap resumed>) = 0x20000000 [pid 5176] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5176] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5177] <... set_robust_list resumed>) = 0 [pid 5177] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5177] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5177] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5175] <... futex resumed>) = 0 [pid 5175] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5175] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5176] <... futex resumed>) = 0 [pid 5176] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5176] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5175] <... futex resumed>) = 0 [pid 5175] exit_group(0) = ? [pid 5176] <... futex resumed>) = ? [pid 5176] +++ exited with 0 +++ [pid 5177] <... futex resumed>) = ? [pid 5177] +++ exited with 0 +++ [pid 5175] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./32/binderfs") = 0 [ 70.517052][ T5176] loop0: detected capacity change from 0 to 256 [ 70.527006][ T5176] exfat: Deprecated parameter 'utf8' [ 70.537086][ T5176] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./32/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./32/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./32/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./32/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5178 ./strace-static-x86_64: Process 5178 attached [pid 5178] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5178] chdir("./33") = 0 [pid 5178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5178] setpgid(0, 0) = 0 [pid 5178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5178] write(3, "1000", 4) = 4 [pid 5178] close(3) = 0 [pid 5178] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5178] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5178] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5178] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5179], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5179 [pid 5178] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5178] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5179 attached [pid 5179] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5179] memfd_create("syzkaller", 0) = 3 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5179] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5179] munmap(0x7f2656609000, 131072) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5179] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5179] close(3) = 0 [pid 5179] mkdir("./file2", 0777) = 0 [pid 5179] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5179] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5179] chdir("./file2") = 0 [pid 5179] ioctl(4, LOOP_CLR_FD) = 0 [pid 5179] close(4) = 0 [pid 5179] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5178] <... futex resumed>) = 0 [pid 5178] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5178] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5179] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5179] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5178] <... futex resumed>) = 0 [pid 5179] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5178] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5179] <... futex resumed>) = 0 [pid 5178] <... futex resumed>) = 1 [pid 5179] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5178] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5179] <... openat resumed>) = 5 [pid 5179] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5178] <... futex resumed>) = 0 [pid 5179] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5178] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5179] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5178] <... futex resumed>) = 0 [pid 5179] write(4, "\x00\x00", 2 [pid 5178] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5179] <... write resumed>) = 2 [pid 5179] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5179] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5178] <... futex resumed>) = 0 [pid 5178] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5179] <... futex resumed>) = 0 [pid 5178] <... futex resumed>) = 1 [pid 5179] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5178] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5179] <... mmap resumed>) = 0x20000000 [pid 5178] <... futex resumed>) = 0 [pid 5179] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5179] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5178] <... mmap resumed>) = 0x7f2656608000 [pid 5178] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5178] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5180], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5180 [pid 5178] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 5180 attached [pid 5178] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5180] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5180] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5180] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5180] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5178] <... futex resumed>) = 0 [pid 5180] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5178] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5179] <... futex resumed>) = 0 [pid 5178] <... futex resumed>) = 1 [pid 5179] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5178] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5179] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5179] <... futex resumed>) = 0 [pid 5179] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5178] exit_group(0 [pid 5179] <... futex resumed>) = ? [pid 5178] <... exit_group resumed>) = ? [pid 5179] +++ exited with 0 +++ [pid 5180] <... futex resumed>) = ? [pid 5180] +++ exited with 0 +++ [pid 5178] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5178, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./33/binderfs") = 0 [ 70.619289][ T5179] loop0: detected capacity change from 0 to 256 [ 70.628258][ T5179] exfat: Deprecated parameter 'utf8' [ 70.639809][ T5179] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./33/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./33/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./33/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./33/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5181 attached [pid 5181] set_robust_list(0x555556b3a6e0, 24 [pid 5078] <... clone resumed>, child_tidptr=0x555556b3a6d0) = 5181 [pid 5181] <... set_robust_list resumed>) = 0 [pid 5181] chdir("./34") = 0 [pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5181] setpgid(0, 0) = 0 [pid 5181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5181] write(3, "1000", 4) = 4 [pid 5181] close(3) = 0 [pid 5181] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5181] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5181] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5181] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5181] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5182], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5182 [pid 5181] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5181] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5182 attached [pid 5182] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5182] memfd_create("syzkaller", 0) = 3 [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5182] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5182] munmap(0x7f2656609000, 131072) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5182] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5182] close(3) = 0 [pid 5182] mkdir("./file2", 0777) = 0 [pid 5182] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5182] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5182] chdir("./file2") = 0 [pid 5182] ioctl(4, LOOP_CLR_FD) = 0 [pid 5182] close(4) = 0 [pid 5182] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5181] <... futex resumed>) = 0 [pid 5181] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5181] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5182] <... futex resumed>) = 1 [pid 5182] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5182] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5181] <... futex resumed>) = 0 [pid 5181] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5181] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5182] <... futex resumed>) = 1 [pid 5182] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5182] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5181] <... futex resumed>) = 0 [pid 5181] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5181] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5182] <... futex resumed>) = 1 [pid 5182] write(4, "\x00\x00", 2) = 2 [pid 5182] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5181] <... futex resumed>) = 0 [pid 5181] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5181] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5181] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5181] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5181] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5183 attached , parent_tid=[5183], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5183 [pid 5181] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5181] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5182] <... futex resumed>) = 1 [pid 5182] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5183] set_robust_list(0x7f26566289e0, 24 [pid 5182] <... mmap resumed>) = 0x20000000 [pid 5182] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5182] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5183] <... set_robust_list resumed>) = 0 [pid 5183] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5183] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5183] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5181] <... futex resumed>) = 0 [pid 5181] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5182] <... futex resumed>) = 0 [pid 5181] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5182] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5182] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5181] <... futex resumed>) = 0 [pid 5183] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5182] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5181] exit_group(0 [pid 5182] <... futex resumed>) = ? [pid 5181] <... exit_group resumed>) = ? [pid 5183] <... futex resumed>) = ? [pid 5182] +++ exited with 0 +++ [pid 5183] +++ exited with 0 +++ [pid 5181] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5181, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./34/binderfs") = 0 umount2("./34/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./34/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 70.742199][ T5182] loop0: detected capacity change from 0 to 256 [ 70.750698][ T5182] exfat: Deprecated parameter 'utf8' [ 70.760805][ T5182] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) lstat("./34/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./34/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5184 ./strace-static-x86_64: Process 5184 attached [pid 5184] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5184] chdir("./35") = 0 [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5184] setpgid(0, 0) = 0 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5184] write(3, "1000", 4) = 4 [pid 5184] close(3) = 0 [pid 5184] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5184] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5184] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5184] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5185 attached , parent_tid=[5185], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5185 [pid 5185] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5185] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5184] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5185] <... futex resumed>) = 0 [pid 5184] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5185] memfd_create("syzkaller", 0) = 3 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5185] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5185] munmap(0x7f2656609000, 131072) = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5185] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5185] close(3) = 0 [pid 5185] mkdir("./file2", 0777) = 0 [pid 5185] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5185] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5185] chdir("./file2") = 0 [pid 5185] ioctl(4, LOOP_CLR_FD) = 0 [pid 5185] close(4) = 0 [pid 5185] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] <... futex resumed>) = 0 [pid 5184] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5184] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5185] <... futex resumed>) = 1 [pid 5185] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5185] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] <... futex resumed>) = 0 [pid 5184] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5184] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5185] <... futex resumed>) = 1 [pid 5185] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5185] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] <... futex resumed>) = 0 [pid 5184] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5184] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5185] <... futex resumed>) = 1 [pid 5185] write(4, "\x00\x00", 2) = 2 [pid 5185] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] <... futex resumed>) = 0 [pid 5184] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5184] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5184] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5184] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5186], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5186 [pid 5184] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5184] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5185] <... futex resumed>) = 1 [pid 5185] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0./strace-static-x86_64: Process 5186 attached ) = 0x20000000 [pid 5186] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5186] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5186] openat(AT_FDCWD, "", O_RDONLY [pid 5185] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5186] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5186] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5185] <... futex resumed>) = 0 [pid 5185] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5184] <... futex resumed>) = 0 [pid 5184] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5184] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5185] <... futex resumed>) = 0 [pid 5186] <... futex resumed>) = 1 [pid 5185] getdents64(-1, [pid 5186] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5185] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5185] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] <... futex resumed>) = 0 [pid 5184] exit_group(0) = ? [pid 5186] <... futex resumed>) = ? [pid 5185] <... futex resumed>) = ? [pid 5185] +++ exited with 0 +++ [pid 5186] +++ exited with 0 +++ [pid 5184] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5184, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./35/binderfs") = 0 umount2("./35/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./35/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./35/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./35/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./35") = 0 mkdir("./36", 0777) = 0 [ 70.878717][ T5185] loop0: detected capacity change from 0 to 256 [ 70.887741][ T5185] exfat: Deprecated parameter 'utf8' [ 70.897931][ T5185] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) 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=0x555556b3a6d0) = 5187 ./strace-static-x86_64: Process 5187 attached [pid 5187] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5187] chdir("./36") = 0 [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5187] setpgid(0, 0) = 0 [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5187] write(3, "1000", 4) = 4 [pid 5187] close(3) = 0 [pid 5187] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5187] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5187] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5187] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5187] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5188 attached , parent_tid=[5188], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5188 [pid 5188] set_robust_list(0x7f265ea299e0, 24 [pid 5187] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5188] <... set_robust_list resumed>) = 0 [pid 5187] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5188] memfd_create("syzkaller", 0) = 3 [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5188] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5188] munmap(0x7f2656609000, 131072) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5188] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5188] close(3) = 0 [pid 5188] mkdir("./file2", 0777) = 0 [pid 5188] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5188] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5188] chdir("./file2") = 0 [pid 5188] ioctl(4, LOOP_CLR_FD) = 0 [pid 5188] close(4) = 0 [pid 5188] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] <... futex resumed>) = 0 [pid 5187] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5187] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5188] <... futex resumed>) = 1 [pid 5188] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5188] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] <... futex resumed>) = 0 [pid 5187] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5187] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5188] <... futex resumed>) = 1 [pid 5188] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5188] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] <... futex resumed>) = 0 [pid 5188] <... futex resumed>) = 1 [pid 5187] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5188] write(4, "\x00\x00", 2 [pid 5187] <... futex resumed>) = 0 [pid 5187] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5188] <... write resumed>) = 2 [pid 5188] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] <... futex resumed>) = 0 [pid 5188] <... futex resumed>) = 1 [pid 5187] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5188] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5187] <... futex resumed>) = 0 [pid 5187] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5187] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5188] <... mmap resumed>) = 0x20000000 [pid 5187] <... mmap resumed>) = 0x7f2656608000 [pid 5188] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5188] <... futex resumed>) = 0 [pid 5188] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5187] <... mprotect resumed>) = 0 [pid 5187] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5189], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5189 [pid 5187] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5187] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5189 attached [pid 5189] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5189] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5189] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5189] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5189] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5187] <... futex resumed>) = 0 [pid 5187] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5188] <... futex resumed>) = 0 [pid 5187] <... futex resumed>) = 1 [pid 5188] getdents64(-1, [pid 5187] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5188] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5188] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5187] <... futex resumed>) = 0 [pid 5187] exit_group(0) = ? [pid 5189] <... futex resumed>) = ? [pid 5189] +++ exited with 0 +++ [pid 5188] +++ exited with 0 +++ [pid 5187] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5187, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 70.985995][ T5188] loop0: detected capacity change from 0 to 256 [ 70.995501][ T5188] exfat: Deprecated parameter 'utf8' [ 71.007470][ T5188] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./36/binderfs") = 0 umount2("./36/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./36/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./36/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./36/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5190 ./strace-static-x86_64: Process 5190 attached [pid 5190] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5190] chdir("./37") = 0 [pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5190] setpgid(0, 0) = 0 [pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5190] write(3, "1000", 4) = 4 [pid 5190] close(3) = 0 [pid 5190] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5190] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5190] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5190] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5191 attached , parent_tid=[5191], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5191 [pid 5191] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5191] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5190] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5191] <... futex resumed>) = 0 [pid 5190] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5191] memfd_create("syzkaller", 0) = 3 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5191] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5191] munmap(0x7f2656609000, 131072) = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5191] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5191] close(3) = 0 [pid 5191] mkdir("./file2", 0777) = 0 [pid 5191] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5191] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5191] chdir("./file2") = 0 [pid 5191] ioctl(4, LOOP_CLR_FD) = 0 [pid 5191] close(4) = 0 [pid 5191] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] <... futex resumed>) = 0 [pid 5190] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5190] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5191] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5191] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] <... futex resumed>) = 0 [pid 5191] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5190] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5191] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5190] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5191] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5191] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] <... futex resumed>) = 0 [pid 5191] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5190] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5191] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5190] <... futex resumed>) = 0 [pid 5191] write(4, "\x00\x00", 2 [pid 5190] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5191] <... write resumed>) = 2 [pid 5191] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] <... futex resumed>) = 0 [pid 5190] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5190] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5191] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5191] <... mmap resumed>) = 0x20000000 [pid 5190] <... mmap resumed>) = 0x7f2656608000 [pid 5190] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5191] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5190] <... mprotect resumed>) = 0 [pid 5190] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5192], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5192 [pid 5191] <... futex resumed>) = 0 [pid 5191] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5190] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5190] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5192 attached [pid 5192] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5192] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5192] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5192] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5190] <... futex resumed>) = 0 [pid 5192] <... futex resumed>) = 1 [pid 5190] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5192] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5190] <... futex resumed>) = 1 [pid 5191] <... futex resumed>) = 0 [pid 5190] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5191] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5191] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] <... futex resumed>) = 0 [pid 5191] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5190] exit_group(0 [pid 5192] <... futex resumed>) = ? [pid 5191] <... futex resumed>) = ? [pid 5190] <... exit_group resumed>) = ? [pid 5191] +++ exited with 0 +++ [pid 5192] +++ exited with 0 +++ [pid 5190] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5190, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./37/binderfs") = 0 umount2("./37/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./37/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 71.125183][ T5191] loop0: detected capacity change from 0 to 256 [ 71.134317][ T5191] exfat: Deprecated parameter 'utf8' [ 71.144040][ T5191] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) lstat("./37/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./37/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5193 ./strace-static-x86_64: Process 5193 attached [pid 5193] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5193] chdir("./38") = 0 [pid 5193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5193] setpgid(0, 0) = 0 [pid 5193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5193] write(3, "1000", 4) = 4 [pid 5193] close(3) = 0 [pid 5193] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5193] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5193] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5193] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5193] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5194 attached , parent_tid=[5194], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5194 [pid 5193] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5193] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5194] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5194] memfd_create("syzkaller", 0) = 3 [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5194] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5194] munmap(0x7f2656609000, 131072) = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5194] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5194] close(3) = 0 [pid 5194] mkdir("./file2", 0777) = 0 [pid 5194] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5194] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5194] chdir("./file2") = 0 [pid 5194] ioctl(4, LOOP_CLR_FD) = 0 [pid 5194] close(4) = 0 [pid 5194] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5194] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5193] <... futex resumed>) = 0 [pid 5193] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5194] <... futex resumed>) = 0 [pid 5194] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5193] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5194] <... openat resumed>) = 4 [pid 5194] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] <... futex resumed>) = 0 [pid 5194] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5193] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5193] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5194] <... openat resumed>) = 5 [pid 5194] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] <... futex resumed>) = 0 [pid 5194] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5193] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5194] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5193] <... futex resumed>) = 0 [pid 5193] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5194] write(4, "\x00\x00", 2) = 2 [pid 5194] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] <... futex resumed>) = 0 [pid 5194] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5193] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5193] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5194] <... mmap resumed>) = 0x20000000 [pid 5193] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5194] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5194] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5193] <... mmap resumed>) = 0x7f2656608000 [pid 5193] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5193] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5195 attached , parent_tid=[5195], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5195 [pid 5195] set_robust_list(0x7f26566289e0, 24 [pid 5193] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5195] <... set_robust_list resumed>) = 0 [pid 5193] <... futex resumed>) = 0 [pid 5193] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5195] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5195] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5195] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] <... futex resumed>) = 0 [pid 5195] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5193] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5194] <... futex resumed>) = 0 [pid 5193] <... futex resumed>) = 1 [pid 5194] getdents64(-1, [pid 5193] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5194] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5194] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] <... futex resumed>) = 0 [pid 5194] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5193] exit_group(0 [pid 5194] <... futex resumed>) = ? [pid 5193] <... exit_group resumed>) = ? [pid 5194] +++ exited with 0 +++ [pid 5195] <... futex resumed>) = ? [pid 5195] +++ exited with 0 +++ [pid 5193] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5193, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./38/binderfs") = 0 umount2("./38/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./38/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./38/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./38/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 71.254416][ T5194] loop0: detected capacity change from 0 to 256 [ 71.264226][ T5194] exfat: Deprecated parameter 'utf8' [ 71.273715][ T5194] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5196 ./strace-static-x86_64: Process 5196 attached [pid 5196] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5196] chdir("./39") = 0 [pid 5196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5196] setpgid(0, 0) = 0 [pid 5196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5196] write(3, "1000", 4) = 4 [pid 5196] close(3) = 0 [pid 5196] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5196] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5196] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5196] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5197 attached [pid 5197] set_robust_list(0x7f265ea299e0, 24 [pid 5196] <... clone resumed>, parent_tid=[5197], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5197 [pid 5196] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5197] <... set_robust_list resumed>) = 0 [pid 5196] <... futex resumed>) = 0 [pid 5196] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5197] memfd_create("syzkaller", 0) = 3 [pid 5197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5197] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5197] munmap(0x7f2656609000, 131072) = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5197] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5197] close(3) = 0 [pid 5197] mkdir("./file2", 0777) = 0 [pid 5197] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5197] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5197] chdir("./file2") = 0 [pid 5197] ioctl(4, LOOP_CLR_FD) = 0 [pid 5197] close(4) = 0 [pid 5197] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] <... futex resumed>) = 0 [pid 5197] <... futex resumed>) = 1 [pid 5196] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5197] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5196] <... futex resumed>) = 0 [pid 5196] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5197] <... openat resumed>) = 4 [pid 5197] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] <... futex resumed>) = 0 [pid 5197] <... futex resumed>) = 1 [pid 5196] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5196] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5197] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5197] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5196] <... futex resumed>) = 0 [pid 5196] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5196] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5197] write(4, "\x00\x00", 2) = 2 [pid 5197] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5196] <... futex resumed>) = 0 [pid 5196] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5196] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5196] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5196] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5198], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5198 [pid 5196] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5198 attached ) = 0 [pid 5198] set_robust_list(0x7f26566289e0, 24 [pid 5197] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5196] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5198] <... set_robust_list resumed>) = 0 [pid 5198] openat(AT_FDCWD, "", O_RDONLY [pid 5197] <... mmap resumed>) = 0x20000000 [pid 5197] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5198] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5197] <... futex resumed>) = 0 [pid 5198] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] <... futex resumed>) = 0 [pid 5198] <... futex resumed>) = 1 [pid 5197] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5196] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5196] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5198] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5197] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5197] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5197] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5196] <... futex resumed>) = 0 [pid 5197] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5196] exit_group(0 [pid 5198] <... futex resumed>) = ? [pid 5197] <... futex resumed>) = ? [pid 5196] <... exit_group resumed>) = ? [pid 5198] +++ exited with 0 +++ [pid 5197] +++ exited with 0 +++ [pid 5196] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5196, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 71.387065][ T5197] loop0: detected capacity change from 0 to 256 [ 71.395678][ T5197] exfat: Deprecated parameter 'utf8' [ 71.405814][ T5197] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) unlink("./39/binderfs") = 0 umount2("./39/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./39/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./39/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./39/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5199 attached [pid 5199] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5199] chdir("./40" [pid 5078] <... clone resumed>, child_tidptr=0x555556b3a6d0) = 5199 [pid 5199] <... chdir resumed>) = 0 [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5199] setpgid(0, 0) = 0 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5199] write(3, "1000", 4) = 4 [pid 5199] close(3) = 0 [pid 5199] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5199] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5199] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5199] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5200], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5200 [pid 5199] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5199] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5200 attached [pid 5200] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5200] memfd_create("syzkaller", 0) = 3 [pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5200] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5200] munmap(0x7f2656609000, 131072) = 0 [pid 5200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5200] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5200] close(3) = 0 [pid 5200] mkdir("./file2", 0777) = 0 [pid 5200] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5200] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5200] chdir("./file2") = 0 [pid 5200] ioctl(4, LOOP_CLR_FD) = 0 [pid 5200] close(4) = 0 [pid 5200] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5199] <... futex resumed>) = 0 [pid 5200] <... futex resumed>) = 1 [pid 5199] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5200] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5199] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5200] <... openat resumed>) = 4 [pid 5200] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5199] <... futex resumed>) = 0 [pid 5200] <... futex resumed>) = 1 [pid 5199] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5199] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5200] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5200] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5200] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5199] <... futex resumed>) = 0 [pid 5199] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5200] <... futex resumed>) = 0 [pid 5199] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5200] write(4, "\x00\x00", 2) = 2 [pid 5200] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5199] <... futex resumed>) = 0 [pid 5200] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5199] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5199] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5200] <... mmap resumed>) = 0x20000000 [pid 5200] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5199] <... mmap resumed>) = 0x7f2656608000 [pid 5200] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5199] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5199] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5201 attached , parent_tid=[5201], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5201 [pid 5201] set_robust_list(0x7f26566289e0, 24 [pid 5199] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5199] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5201] <... set_robust_list resumed>) = 0 [pid 5201] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5201] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5201] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5199] <... futex resumed>) = 0 [pid 5201] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5199] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5200] <... futex resumed>) = 0 [pid 5199] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5200] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5200] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5199] <... futex resumed>) = 0 [pid 5200] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5199] exit_group(0) = ? [pid 5200] <... futex resumed>) = ? [pid 5201] <... futex resumed>) = ? [pid 5201] +++ exited with 0 +++ [pid 5200] +++ exited with 0 +++ [pid 5199] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5199, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 [ 71.511183][ T5200] loop0: detected capacity change from 0 to 256 [ 71.520394][ T5200] exfat: Deprecated parameter 'utf8' [ 71.531324][ T5200] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./40/binderfs") = 0 umount2("./40/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./40/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./40/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./40/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5202 ./strace-static-x86_64: Process 5202 attached [pid 5202] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5202] chdir("./41") = 0 [pid 5202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5202] setpgid(0, 0) = 0 [pid 5202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5202] write(3, "1000", 4) = 4 [pid 5202] close(3) = 0 [pid 5202] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5202] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5202] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5202] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5203], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5203 [pid 5202] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5202] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5203 attached [pid 5203] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5203] memfd_create("syzkaller", 0) = 3 [pid 5203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5203] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5203] munmap(0x7f2656609000, 131072) = 0 [pid 5203] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5203] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5203] close(3) = 0 [pid 5203] mkdir("./file2", 0777) = 0 [pid 5203] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5203] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5203] chdir("./file2") = 0 [pid 5203] ioctl(4, LOOP_CLR_FD) = 0 [pid 5203] close(4) = 0 [pid 5203] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5202] <... futex resumed>) = 0 [pid 5202] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5202] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5203] <... futex resumed>) = 1 [pid 5203] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5203] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5202] <... futex resumed>) = 0 [pid 5202] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5202] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5203] <... futex resumed>) = 1 [pid 5203] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5203] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5202] <... futex resumed>) = 0 [pid 5202] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5203] <... futex resumed>) = 1 [pid 5202] <... futex resumed>) = 0 [pid 5203] write(4, "\x00\x00", 2 [pid 5202] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5203] <... write resumed>) = 2 [pid 5203] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5202] <... futex resumed>) = 0 [pid 5203] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5202] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5203] <... mmap resumed>) = 0x20000000 [pid 5202] <... futex resumed>) = 0 [pid 5203] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5202] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5203] <... futex resumed>) = 0 [pid 5202] <... futex resumed>) = 0 [pid 5203] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5202] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5202] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5204], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5204 [pid 5202] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5202] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5204 attached [pid 5204] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5204] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5204] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5204] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5202] <... futex resumed>) = 0 [pid 5202] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5203] <... futex resumed>) = 0 [pid 5202] <... futex resumed>) = 1 [pid 5203] getdents64(-1, [pid 5202] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5203] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5203] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5202] <... futex resumed>) = 0 [pid 5203] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5202] exit_group(0 [pid 5203] <... futex resumed>) = ? [pid 5202] <... exit_group resumed>) = ? [pid 5203] +++ exited with 0 +++ [pid 5204] +++ exited with 0 +++ [pid 5202] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5202, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./41/binderfs") = 0 [ 71.643068][ T5203] loop0: detected capacity change from 0 to 256 [ 71.653110][ T5203] exfat: Deprecated parameter 'utf8' [ 71.663832][ T5203] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./41/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./41/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./41/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./41/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5205 ./strace-static-x86_64: Process 5205 attached [pid 5205] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5205] chdir("./42") = 0 [pid 5205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5205] setpgid(0, 0) = 0 [pid 5205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5205] write(3, "1000", 4) = 4 [pid 5205] close(3) = 0 [pid 5205] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5205] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5205] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5205] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5206], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5206 [pid 5205] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5205] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5206 attached [pid 5206] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5206] memfd_create("syzkaller", 0) = 3 [pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5206] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5206] munmap(0x7f2656609000, 131072) = 0 [pid 5206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5206] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5206] close(3) = 0 [pid 5206] mkdir("./file2", 0777) = 0 [pid 5206] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5206] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5206] chdir("./file2") = 0 [pid 5206] ioctl(4, LOOP_CLR_FD) = 0 [pid 5206] close(4) = 0 [pid 5206] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5205] <... futex resumed>) = 0 [pid 5205] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5205] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5206] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5206] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5205] <... futex resumed>) = 0 [pid 5205] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5205] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5206] <... futex resumed>) = 1 [pid 5206] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5206] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5205] <... futex resumed>) = 0 [pid 5205] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5205] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5206] <... futex resumed>) = 1 [pid 5206] write(4, "\x00\x00", 2) = 2 [pid 5206] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5205] <... futex resumed>) = 0 [pid 5205] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5205] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5205] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5205] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5207], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5207 [pid 5205] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5205] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5206] <... futex resumed>) = 1 [pid 5206] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 ./strace-static-x86_64: Process 5207 attached [pid 5206] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5206] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5207] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5207] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5207] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5207] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5205] <... futex resumed>) = 0 [pid 5205] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5205] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5206] <... futex resumed>) = 0 [pid 5206] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5206] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5205] <... futex resumed>) = 0 [pid 5207] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5206] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5205] exit_group(0 [pid 5206] <... futex resumed>) = ? [pid 5205] <... exit_group resumed>) = ? [pid 5207] <... futex resumed>) = ? [pid 5206] +++ exited with 0 +++ [pid 5207] +++ exited with 0 +++ [pid 5205] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5205, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./42/binderfs") = 0 umount2("./42/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./42/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 71.765486][ T5206] loop0: detected capacity change from 0 to 256 [ 71.774815][ T5206] exfat: Deprecated parameter 'utf8' [ 71.786343][ T5206] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) lstat("./42/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./42/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5208 ./strace-static-x86_64: Process 5208 attached [pid 5208] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5208] chdir("./43") = 0 [pid 5208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5208] setpgid(0, 0) = 0 [pid 5208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5208] write(3, "1000", 4) = 4 [pid 5208] close(3) = 0 [pid 5208] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5208] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5208] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5208] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5209 attached , parent_tid=[5209], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5209 [pid 5209] set_robust_list(0x7f265ea299e0, 24 [pid 5208] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5209] <... set_robust_list resumed>) = 0 [pid 5208] <... futex resumed>) = 0 [pid 5208] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5209] memfd_create("syzkaller", 0) = 3 [pid 5209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5209] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5209] munmap(0x7f2656609000, 131072) = 0 [pid 5209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5209] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5209] close(3) = 0 [pid 5209] mkdir("./file2", 0777) = 0 [pid 5209] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5209] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5209] chdir("./file2") = 0 [pid 5209] ioctl(4, LOOP_CLR_FD) = 0 [pid 5209] close(4) = 0 [pid 5209] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] <... futex resumed>) = 0 [pid 5209] <... futex resumed>) = 1 [pid 5208] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5209] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5208] <... futex resumed>) = 0 [pid 5208] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5209] <... openat resumed>) = 4 [pid 5209] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5208] <... futex resumed>) = 0 [pid 5208] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5208] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5209] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5209] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5208] <... futex resumed>) = 0 [pid 5208] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5208] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5209] write(4, "\x00\x00", 2) = 2 [pid 5209] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] <... futex resumed>) = 0 [pid 5208] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5208] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5208] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5209] <... futex resumed>) = 1 [pid 5208] <... mprotect resumed>) = 0 [pid 5209] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5208] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5210 attached [pid 5209] <... mmap resumed>) = 0x20000000 [pid 5208] <... clone resumed>, parent_tid=[5210], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5210 [pid 5210] set_robust_list(0x7f26566289e0, 24 [pid 5208] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5209] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] <... futex resumed>) = 0 [pid 5209] <... futex resumed>) = 0 [pid 5208] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5209] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5210] <... set_robust_list resumed>) = 0 [pid 5210] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5210] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5210] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5208] <... futex resumed>) = 0 [pid 5210] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5208] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5209] <... futex resumed>) = 0 [pid 5208] <... futex resumed>) = 1 [pid 5209] getdents64(-1, [pid 5208] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5209] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5209] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5208] <... futex resumed>) = 0 [pid 5209] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5208] exit_group(0 [pid 5210] <... futex resumed>) = ? [pid 5209] <... futex resumed>) = ? [pid 5208] <... exit_group resumed>) = ? [pid 5210] +++ exited with 0 +++ [pid 5209] +++ exited with 0 +++ [pid 5208] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5208, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./43/binderfs") = 0 [ 71.903177][ T5209] loop0: detected capacity change from 0 to 256 [ 71.913262][ T5209] exfat: Deprecated parameter 'utf8' [ 71.923329][ T5209] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./43/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./43/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./43/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./43/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5211 ./strace-static-x86_64: Process 5211 attached [pid 5211] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5211] chdir("./44") = 0 [pid 5211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5211] setpgid(0, 0) = 0 [pid 5211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5211] write(3, "1000", 4) = 4 [pid 5211] close(3) = 0 [pid 5211] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5211] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5211] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5211] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5212 attached [pid 5212] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5212] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5211] <... clone resumed>, parent_tid=[5212], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5212 [pid 5211] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5212] <... futex resumed>) = 0 [pid 5211] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5212] memfd_create("syzkaller", 0) = 3 [pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5212] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5212] munmap(0x7f2656609000, 131072) = 0 [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5212] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5212] close(3) = 0 [pid 5212] mkdir("./file2", 0777) = 0 [pid 5212] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5212] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5212] chdir("./file2") = 0 [pid 5212] ioctl(4, LOOP_CLR_FD) = 0 [pid 5212] close(4) = 0 [pid 5212] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5211] <... futex resumed>) = 0 [pid 5211] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5211] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5212] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5212] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5211] <... futex resumed>) = 0 [pid 5211] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5211] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5212] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5212] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5211] <... futex resumed>) = 0 [pid 5211] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5211] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5212] write(4, "\x00\x00", 2) = 2 [pid 5212] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5211] <... futex resumed>) = 0 [pid 5212] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5211] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5212] <... futex resumed>) = 0 [pid 5212] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5211] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5212] <... mmap resumed>) = 0x20000000 [pid 5212] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5211] <... mmap resumed>) = 0x7f2656608000 [pid 5212] <... futex resumed>) = 0 [pid 5212] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5211] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5211] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5213 attached , parent_tid=[5213], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5213 [pid 5211] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5211] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5213] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5213] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5213] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5213] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5211] <... futex resumed>) = 0 [pid 5213] <... futex resumed>) = 1 [pid 5211] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5213] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5211] <... futex resumed>) = 1 [pid 5212] <... futex resumed>) = 0 [pid 5212] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5212] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5212] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5211] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5211] exit_group(0 [pid 5212] <... futex resumed>) = ? [pid 5211] <... exit_group resumed>) = ? [pid 5212] +++ exited with 0 +++ [pid 5213] <... futex resumed>) = ? [pid 5213] +++ exited with 0 +++ [pid 5211] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5211, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./44/binderfs") = 0 [ 72.015567][ T5212] loop0: detected capacity change from 0 to 256 [ 72.025643][ T5212] exfat: Deprecated parameter 'utf8' [ 72.037288][ T5212] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./44/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./44/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./44/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./44/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5214 attached , child_tidptr=0x555556b3a6d0) = 5214 [pid 5214] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5214] chdir("./45") = 0 [pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5214] setpgid(0, 0) = 0 [pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5214] write(3, "1000", 4) = 4 [pid 5214] close(3) = 0 [pid 5214] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5214] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5214] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5214] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5215 attached [pid 5215] set_robust_list(0x7f265ea299e0, 24 [pid 5214] <... clone resumed>, parent_tid=[5215], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5215 [pid 5215] <... set_robust_list resumed>) = 0 [pid 5214] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5214] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5215] memfd_create("syzkaller", 0) = 3 [pid 5215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5215] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5215] munmap(0x7f2656609000, 131072) = 0 [pid 5215] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5215] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5215] close(3) = 0 [pid 5215] mkdir("./file2", 0777) = 0 [pid 5215] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5215] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5215] chdir("./file2") = 0 [pid 5215] ioctl(4, LOOP_CLR_FD) = 0 [pid 5215] close(4) = 0 [pid 5215] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5214] <... futex resumed>) = 0 [pid 5215] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5214] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5215] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5214] <... futex resumed>) = 0 [pid 5215] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5214] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5215] <... openat resumed>) = 4 [pid 5215] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5214] <... futex resumed>) = 0 [pid 5215] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5214] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5215] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5214] <... futex resumed>) = 0 [pid 5215] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5214] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5215] <... openat resumed>) = 5 [pid 5215] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5214] <... futex resumed>) = 0 [pid 5215] write(4, "\x00\x00", 2 [pid 5214] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5215] <... write resumed>) = 2 [pid 5214] <... futex resumed>) = 0 [pid 5215] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5214] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5215] <... futex resumed>) = 0 [pid 5214] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5215] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5214] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5215] <... mmap resumed>) = 0x20000000 [pid 5214] <... futex resumed>) = 0 [pid 5215] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5214] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5215] <... futex resumed>) = 0 [pid 5214] <... futex resumed>) = 0 [pid 5215] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5214] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5214] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5216], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5216 [pid 5214] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5214] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5216 attached [pid 5216] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5216] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5216] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5216] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5214] <... futex resumed>) = 0 [pid 5216] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5214] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5215] <... futex resumed>) = 0 [pid 5214] <... futex resumed>) = 1 [pid 5215] getdents64(-1, [pid 5214] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5215] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5215] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5214] <... futex resumed>) = 0 [pid 5215] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5214] exit_group(0 [pid 5216] <... futex resumed>) = ? [pid 5215] <... futex resumed>) = ? [pid 5214] <... exit_group resumed>) = ? [pid 5216] +++ exited with 0 +++ [pid 5215] +++ exited with 0 +++ [pid 5214] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5214, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./45/binderfs") = 0 umount2("./45/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./45/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./45/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./45/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 72.139897][ T5215] loop0: detected capacity change from 0 to 256 [ 72.150272][ T5215] exfat: Deprecated parameter 'utf8' [ 72.160964][ T5215] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) openat(AT_FDCWD, "./45/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5217 ./strace-static-x86_64: Process 5217 attached [pid 5217] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5217] chdir("./46") = 0 [pid 5217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5217] setpgid(0, 0) = 0 [pid 5217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5217] write(3, "1000", 4) = 4 [pid 5217] close(3) = 0 [pid 5217] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5217] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5217] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5217] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5218 attached [pid 5218] set_robust_list(0x7f265ea299e0, 24 [pid 5217] <... clone resumed>, parent_tid=[5218], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5218 [pid 5218] <... set_robust_list resumed>) = 0 [pid 5217] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5217] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5218] memfd_create("syzkaller", 0) = 3 [pid 5218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5218] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5218] munmap(0x7f2656609000, 131072) = 0 [pid 5218] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5218] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5218] close(3) = 0 [pid 5218] mkdir("./file2", 0777) = 0 [pid 5218] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5218] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5218] chdir("./file2") = 0 [pid 5218] ioctl(4, LOOP_CLR_FD) = 0 [pid 5218] close(4) = 0 [pid 5218] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5217] <... futex resumed>) = 0 [pid 5217] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5218] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5217] <... futex resumed>) = 0 [pid 5217] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5218] <... openat resumed>) = 4 [pid 5218] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5217] <... futex resumed>) = 0 [pid 5217] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5217] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5218] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5218] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5217] <... futex resumed>) = 0 [pid 5217] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5217] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5218] write(4, "\x00\x00", 2) = 2 [pid 5218] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5217] <... futex resumed>) = 0 [pid 5217] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5217] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5217] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5217] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5218] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5217] <... clone resumed>, parent_tid=[5219], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5219 ./strace-static-x86_64: Process 5219 attached [pid 5217] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5219] set_robust_list(0x7f26566289e0, 24 [pid 5217] <... futex resumed>) = 0 [pid 5219] <... set_robust_list resumed>) = 0 [pid 5217] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5218] <... mmap resumed>) = 0x20000000 [pid 5219] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5218] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5219] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5218] <... futex resumed>) = 0 [pid 5219] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5218] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5217] <... futex resumed>) = 0 [pid 5217] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5217] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5218] <... futex resumed>) = 0 [pid 5219] <... futex resumed>) = 1 [pid 5219] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5218] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5218] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5217] <... futex resumed>) = 0 [pid 5218] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5217] exit_group(0 [pid 5219] <... futex resumed>) = ? [pid 5218] <... futex resumed>) = ? [pid 5217] <... exit_group resumed>) = ? [pid 5219] +++ exited with 0 +++ [pid 5218] +++ exited with 0 +++ [pid 5217] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5217, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./46/binderfs") = 0 [ 72.263194][ T5218] loop0: detected capacity change from 0 to 256 [ 72.273628][ T5218] exfat: Deprecated parameter 'utf8' [ 72.285146][ T5218] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./46/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./46/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./46/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./46/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5220 ./strace-static-x86_64: Process 5220 attached [pid 5220] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5220] chdir("./47") = 0 [pid 5220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5220] setpgid(0, 0) = 0 [pid 5220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5220] write(3, "1000", 4) = 4 [pid 5220] close(3) = 0 [pid 5220] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5220] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5220] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5220] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5221], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5221 [pid 5220] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5221 attached [pid 5221] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5221] memfd_create("syzkaller", 0) = 3 [pid 5221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5221] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5221] munmap(0x7f2656609000, 131072) = 0 [pid 5221] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5221] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5221] close(3) = 0 [pid 5221] mkdir("./file2", 0777) = 0 [pid 5221] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5221] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5221] chdir("./file2") = 0 [pid 5221] ioctl(4, LOOP_CLR_FD) = 0 [pid 5221] close(4) = 0 [pid 5221] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5220] <... futex resumed>) = 0 [pid 5220] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5221] <... futex resumed>) = 1 [pid 5221] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5221] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5220] <... futex resumed>) = 0 [pid 5220] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5221] <... futex resumed>) = 1 [pid 5221] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5221] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5220] <... futex resumed>) = 0 [pid 5220] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5221] <... futex resumed>) = 1 [pid 5221] write(4, "\x00\x00", 2) = 2 [pid 5221] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5220] <... futex resumed>) = 0 [pid 5220] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5220] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5220] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5222], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5222 [pid 5220] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5221] <... futex resumed>) = 1 [pid 5221] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5221] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5221] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5222 attached [pid 5222] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5222] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5222] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5222] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5220] <... futex resumed>) = 0 [pid 5220] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5220] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5221] <... futex resumed>) = 0 [pid 5221] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5221] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5220] <... futex resumed>) = 0 [pid 5221] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5220] exit_group(0 [pid 5221] <... futex resumed>) = ? [pid 5220] <... exit_group resumed>) = ? [pid 5221] +++ exited with 0 +++ [pid 5222] +++ exited with 0 +++ [pid 5220] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5220, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./47/binderfs") = 0 umount2("./47/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 72.370159][ T5221] loop0: detected capacity change from 0 to 256 [ 72.381127][ T5221] exfat: Deprecated parameter 'utf8' [ 72.391832][ T5221] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./47/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./47/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./47/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5223 ./strace-static-x86_64: Process 5223 attached [pid 5223] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5223] chdir("./48") = 0 [pid 5223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5223] setpgid(0, 0) = 0 [pid 5223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5223] write(3, "1000", 4) = 4 [pid 5223] close(3) = 0 [pid 5223] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5223] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5223] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5223] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5224 attached [pid 5224] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5224] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5223] <... clone resumed>, parent_tid=[5224], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5224 [pid 5223] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5224] <... futex resumed>) = 0 [pid 5224] memfd_create("syzkaller", 0 [pid 5223] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5224] <... memfd_create resumed>) = 3 [pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5224] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5224] munmap(0x7f2656609000, 131072) = 0 [pid 5224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5224] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5224] close(3) = 0 [pid 5224] mkdir("./file2", 0777) = 0 [pid 5224] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5224] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5224] chdir("./file2") = 0 [pid 5224] ioctl(4, LOOP_CLR_FD) = 0 [pid 5224] close(4) = 0 [pid 5224] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5223] <... futex resumed>) = 0 [pid 5224] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5223] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5224] <... openat resumed>) = 4 [pid 5223] <... futex resumed>) = 0 [pid 5223] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5224] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5223] <... futex resumed>) = 0 [pid 5224] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5223] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5223] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5224] <... openat resumed>) = 5 [pid 5224] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5223] <... futex resumed>) = 0 [pid 5224] write(4, "\x00\x00", 2 [pid 5223] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5224] <... write resumed>) = 2 [pid 5223] <... futex resumed>) = 0 [pid 5224] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5224] <... futex resumed>) = 0 [pid 5223] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5224] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5223] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5224] <... mmap resumed>) = 0x20000000 [pid 5223] <... futex resumed>) = 0 [pid 5224] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5224] <... futex resumed>) = 0 [pid 5223] <... futex resumed>) = 0 [pid 5224] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5223] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5223] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5225], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5225 [pid 5223] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5223] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5225 attached [pid 5225] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5225] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5225] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5225] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5223] <... futex resumed>) = 0 [pid 5223] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5224] <... futex resumed>) = 0 [pid 5223] <... futex resumed>) = 1 [pid 5224] getdents64(-1, [pid 5223] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5225] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5224] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5224] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5223] <... futex resumed>) = 0 [pid 5224] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5223] exit_group(0 [pid 5224] <... futex resumed>) = ? [pid 5223] <... exit_group resumed>) = ? [pid 5225] <... futex resumed>) = ? [pid 5224] +++ exited with 0 +++ [pid 5225] +++ exited with 0 +++ [pid 5223] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5223, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./48/binderfs") = 0 [ 72.500216][ T5224] loop0: detected capacity change from 0 to 256 [ 72.510196][ T5224] exfat: Deprecated parameter 'utf8' [ 72.521017][ T5224] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./48/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./48/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./48/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./48/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5226 ./strace-static-x86_64: Process 5226 attached [pid 5226] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5226] chdir("./49") = 0 [pid 5226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5226] setpgid(0, 0) = 0 [pid 5226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5226] write(3, "1000", 4) = 4 [pid 5226] close(3) = 0 [pid 5226] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5226] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5226] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5226] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5227], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5227 [pid 5226] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5227 attached [pid 5227] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5227] memfd_create("syzkaller", 0) = 3 [pid 5227] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5227] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5227] munmap(0x7f2656609000, 131072) = 0 [pid 5227] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5227] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5227] close(3) = 0 [pid 5227] mkdir("./file2", 0777) = 0 [pid 5227] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5227] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5227] chdir("./file2") = 0 [pid 5227] ioctl(4, LOOP_CLR_FD) = 0 [pid 5227] close(4) = 0 [pid 5227] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5226] <... futex resumed>) = 0 [pid 5226] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5227] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5227] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5226] <... futex resumed>) = 0 [pid 5227] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5226] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5226] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5227] <... futex resumed>) = 0 [pid 5227] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5227] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5226] <... futex resumed>) = 0 [pid 5226] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5227] <... futex resumed>) = 1 [pid 5227] write(4, "\x00\x00", 2) = 2 [pid 5227] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5226] <... futex resumed>) = 0 [pid 5226] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5226] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5226] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5228 attached , parent_tid=[5228], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5228 [pid 5226] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5227] <... futex resumed>) = 1 [pid 5227] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5228] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5227] <... mmap resumed>) = 0x20000000 [pid 5228] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5227] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5227] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5228] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5228] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5226] <... futex resumed>) = 0 [pid 5226] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5226] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5227] <... futex resumed>) = 0 [pid 5227] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5227] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5226] <... futex resumed>) = 0 [pid 5226] exit_group(0) = ? [pid 5227] <... futex resumed>) = ? [pid 5227] +++ exited with 0 +++ [pid 5228] <... futex resumed>) = ? [pid 5228] +++ exited with 0 +++ [pid 5226] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5226, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 72.623009][ T5227] loop0: detected capacity change from 0 to 256 [ 72.634200][ T5227] exfat: Deprecated parameter 'utf8' [ 72.644050][ T5227] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) unlink("./49/binderfs") = 0 umount2("./49/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./49/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./49/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./49/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5229 ./strace-static-x86_64: Process 5229 attached [pid 5229] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5229] chdir("./50") = 0 [pid 5229] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5229] setpgid(0, 0) = 0 [pid 5229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5229] write(3, "1000", 4) = 4 [pid 5229] close(3) = 0 [pid 5229] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5229] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5229] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5229] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5229] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5230 attached , parent_tid=[5230], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5230 [pid 5230] set_robust_list(0x7f265ea299e0, 24 [pid 5229] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5229] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5230] <... set_robust_list resumed>) = 0 [pid 5230] memfd_create("syzkaller", 0) = 3 [pid 5230] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5230] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5230] munmap(0x7f2656609000, 131072) = 0 [pid 5230] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5230] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5230] close(3) = 0 [pid 5230] mkdir("./file2", 0777) = 0 [pid 5230] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5230] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5230] chdir("./file2") = 0 [pid 5230] ioctl(4, LOOP_CLR_FD) = 0 [pid 5230] close(4) = 0 [pid 5230] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5229] <... futex resumed>) = 0 [pid 5230] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5229] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5230] <... openat resumed>) = 4 [pid 5229] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5230] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5229] <... futex resumed>) = 0 [pid 5230] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5229] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5230] <... openat resumed>) = 5 [pid 5229] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5230] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5229] <... futex resumed>) = 0 [pid 5230] write(4, "\x00\x00", 2 [pid 5229] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5230] <... write resumed>) = 2 [pid 5229] <... futex resumed>) = 0 [pid 5230] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5229] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5230] <... futex resumed>) = 0 [pid 5229] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5230] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5229] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5230] <... mmap resumed>) = 0x20000000 [pid 5229] <... futex resumed>) = 0 [pid 5230] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5229] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5230] <... futex resumed>) = 0 [pid 5229] <... futex resumed>) = 0 [pid 5230] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5229] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5229] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5229] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5231], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5231 [pid 5229] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5229] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5231 attached [pid 5231] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5231] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5231] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5231] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5229] <... futex resumed>) = 0 [pid 5231] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5229] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5230] <... futex resumed>) = 0 [pid 5229] <... futex resumed>) = 1 [pid 5230] getdents64(-1, [pid 5229] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5230] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5230] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5229] <... futex resumed>) = 0 [pid 5230] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5229] exit_group(0 [pid 5231] <... futex resumed>) = ? [pid 5230] <... futex resumed>) = ? [pid 5229] <... exit_group resumed>) = ? [pid 5231] +++ exited with 0 +++ [pid 5230] +++ exited with 0 +++ [pid 5229] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5229, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./50/binderfs") = 0 umount2("./50/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./50/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./50/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 72.741141][ T5230] loop0: detected capacity change from 0 to 256 [ 72.752080][ T5230] exfat: Deprecated parameter 'utf8' [ 72.762346][ T5230] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./50/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5232 attached , child_tidptr=0x555556b3a6d0) = 5232 [pid 5232] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5232] chdir("./51") = 0 [pid 5232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5232] setpgid(0, 0) = 0 [pid 5232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5232] write(3, "1000", 4) = 4 [pid 5232] close(3) = 0 [pid 5232] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5232] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5232] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5232] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5233], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5233 [pid 5232] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5232] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5233 attached [pid 5233] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5233] memfd_create("syzkaller", 0) = 3 [pid 5233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5233] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5233] munmap(0x7f2656609000, 131072) = 0 [pid 5233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5233] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5233] close(3) = 0 [pid 5233] mkdir("./file2", 0777) = 0 [pid 5233] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5233] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5233] chdir("./file2") = 0 [pid 5233] ioctl(4, LOOP_CLR_FD) = 0 [pid 5233] close(4) = 0 [pid 5233] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5232] <... futex resumed>) = 0 [pid 5232] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5232] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5233] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5233] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5232] <... futex resumed>) = 0 [pid 5232] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5232] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5233] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5233] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5233] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5232] <... futex resumed>) = 0 [pid 5232] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5233] <... futex resumed>) = 0 [pid 5233] write(4, "\x00\x00", 2) = 2 [pid 5232] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5233] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5232] <... futex resumed>) = 0 [pid 5232] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5232] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5232] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5232] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5234 attached , parent_tid=[5234], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5234 [pid 5232] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5233] <... futex resumed>) = 1 [pid 5232] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5233] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5234] set_robust_list(0x7f26566289e0, 24 [pid 5233] <... mmap resumed>) = 0x20000000 [pid 5233] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5234] <... set_robust_list resumed>) = 0 [pid 5233] <... futex resumed>) = 0 [pid 5233] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5234] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5234] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5232] <... futex resumed>) = 0 [pid 5234] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5232] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5233] <... futex resumed>) = 0 [pid 5232] <... futex resumed>) = 1 [pid 5233] getdents64(-1, [pid 5232] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5233] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5233] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5232] <... futex resumed>) = 0 [pid 5233] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5232] exit_group(0 [pid 5234] <... futex resumed>) = ? [pid 5233] <... futex resumed>) = ? [pid 5232] <... exit_group resumed>) = ? [pid 5234] +++ exited with 0 +++ [pid 5233] +++ exited with 0 +++ [pid 5232] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5232, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./51/binderfs") = 0 umount2("./51/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./51/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./51/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./51/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 72.852279][ T5233] loop0: detected capacity change from 0 to 256 [ 72.862557][ T5233] exfat: Deprecated parameter 'utf8' [ 72.872488][ T5233] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) openat(AT_FDCWD, "./51/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5235 attached , child_tidptr=0x555556b3a6d0) = 5235 [pid 5235] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5235] chdir("./52") = 0 [pid 5235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5235] setpgid(0, 0) = 0 [pid 5235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "1000", 4) = 4 [pid 5235] close(3) = 0 [pid 5235] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5235] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5235] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5235] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5235] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5236 attached , parent_tid=[5236], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5236 [pid 5236] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5236] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5235] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5236] <... futex resumed>) = 0 [pid 5235] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5236] memfd_create("syzkaller", 0) = 3 [pid 5236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5236] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5236] munmap(0x7f2656609000, 131072) = 0 [pid 5236] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5236] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5236] close(3) = 0 [pid 5236] mkdir("./file2", 0777) = 0 [pid 5236] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5236] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5236] chdir("./file2") = 0 [pid 5236] ioctl(4, LOOP_CLR_FD) = 0 [pid 5236] close(4) = 0 [pid 5236] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5235] <... futex resumed>) = 0 [pid 5236] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5235] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5236] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5236] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5235] <... futex resumed>) = 0 [pid 5235] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5236] <... openat resumed>) = 4 [pid 5236] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5236] <... futex resumed>) = 0 [pid 5235] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5236] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5235] <... futex resumed>) = 0 [pid 5235] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5236] <... openat resumed>) = 5 [pid 5236] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5235] <... futex resumed>) = 0 [pid 5236] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5235] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5236] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5235] <... futex resumed>) = 0 [pid 5236] write(4, "\x00\x00", 2 [pid 5235] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5236] <... write resumed>) = 2 [pid 5236] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5235] <... futex resumed>) = 0 [pid 5236] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5235] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5236] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5235] <... futex resumed>) = 0 [pid 5236] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5235] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5236] <... mmap resumed>) = 0x20000000 [pid 5235] <... futex resumed>) = 0 [pid 5236] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5236] <... futex resumed>) = 0 [pid 5235] <... mmap resumed>) = 0x7f2656608000 [pid 5236] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5235] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5235] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5237], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5237 ./strace-static-x86_64: Process 5237 attached [pid 5235] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5235] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5237] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5237] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5237] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5237] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5235] <... futex resumed>) = 0 [pid 5237] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5235] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5236] <... futex resumed>) = 0 [pid 5235] <... futex resumed>) = 1 [pid 5236] getdents64(-1, [pid 5235] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5236] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5236] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5235] <... futex resumed>) = 0 [pid 5236] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5235] exit_group(0 [pid 5237] <... futex resumed>) = ? [pid 5236] <... futex resumed>) = ? [pid 5235] <... exit_group resumed>) = ? [pid 5237] +++ exited with 0 +++ [pid 5236] +++ exited with 0 +++ [pid 5235] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5235, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./52/binderfs") = 0 [ 72.964398][ T5236] loop0: detected capacity change from 0 to 256 [ 72.973116][ T5236] exfat: Deprecated parameter 'utf8' [ 72.983911][ T5236] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./52/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./52/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./52/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./52/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5238 ./strace-static-x86_64: Process 5238 attached [pid 5238] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5238] chdir("./53") = 0 [pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5238] setpgid(0, 0) = 0 [pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "1000", 4) = 4 [pid 5238] close(3) = 0 [pid 5238] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5238] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5238] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5238] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5239], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5239 [pid 5238] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5238] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5239 attached [pid 5239] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5239] memfd_create("syzkaller", 0) = 3 [pid 5239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5239] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5239] munmap(0x7f2656609000, 131072) = 0 [pid 5239] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5239] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5239] close(3) = 0 [pid 5239] mkdir("./file2", 0777) = 0 [pid 5239] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5239] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5239] chdir("./file2") = 0 [pid 5239] ioctl(4, LOOP_CLR_FD) = 0 [pid 5239] close(4) = 0 [pid 5239] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5238] <... futex resumed>) = 0 [pid 5238] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5239] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5238] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5239] <... openat resumed>) = 4 [pid 5239] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5238] <... futex resumed>) = 0 [pid 5239] <... futex resumed>) = 1 [pid 5239] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5238] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5238] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5239] <... openat resumed>) = 5 [pid 5239] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5238] <... futex resumed>) = 0 [pid 5239] <... futex resumed>) = 1 [pid 5239] write(4, "\x00\x00", 2 [pid 5238] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5238] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5239] <... write resumed>) = 2 [pid 5239] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5238] <... futex resumed>) = 0 [pid 5239] <... futex resumed>) = 1 [pid 5238] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5239] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5238] <... futex resumed>) = 0 [pid 5238] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5239] <... mmap resumed>) = 0x20000000 [pid 5238] <... mmap resumed>) = 0x7f2656608000 [pid 5238] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5238] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5240 attached , parent_tid=[5240], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5240 [pid 5240] set_robust_list(0x7f26566289e0, 24 [pid 5238] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5240] <... set_robust_list resumed>) = 0 [pid 5238] <... futex resumed>) = 0 [pid 5238] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5240] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5240] openat(AT_FDCWD, "", O_RDONLY [pid 5239] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5240] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5240] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5239] <... futex resumed>) = 0 [pid 5238] <... futex resumed>) = 0 [pid 5238] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5238] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5240] <... futex resumed>) = 1 [pid 5240] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5239] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5239] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5238] <... futex resumed>) = 0 [pid 5239] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5238] exit_group(0) = ? [pid 5239] <... futex resumed>) = ? [pid 5240] <... futex resumed>) = ? [pid 5240] +++ exited with 0 +++ [pid 5239] +++ exited with 0 +++ [pid 5238] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5238, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 73.083938][ T5239] loop0: detected capacity change from 0 to 256 [ 73.093819][ T5239] exfat: Deprecated parameter 'utf8' [ 73.103254][ T5239] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./53/binderfs") = 0 umount2("./53/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./53/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./53/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./53/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5241 ./strace-static-x86_64: Process 5241 attached [pid 5241] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5241] chdir("./54") = 0 [pid 5241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5241] setpgid(0, 0) = 0 [pid 5241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5241] write(3, "1000", 4) = 4 [pid 5241] close(3) = 0 [pid 5241] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5241] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5241] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5241] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5241] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5242 attached , parent_tid=[5242], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5242 [pid 5242] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5242] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5241] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5242] <... futex resumed>) = 0 [pid 5241] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5242] memfd_create("syzkaller", 0) = 3 [pid 5242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5242] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5242] munmap(0x7f2656609000, 131072) = 0 [pid 5242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5242] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5242] close(3) = 0 [pid 5242] mkdir("./file2", 0777) = 0 [pid 5242] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5242] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5242] chdir("./file2") = 0 [pid 5242] ioctl(4, LOOP_CLR_FD) = 0 [pid 5242] close(4) = 0 [pid 5242] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... futex resumed>) = 0 [pid 5242] <... futex resumed>) = 1 [pid 5241] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5241] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5242] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5242] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... futex resumed>) = 0 [pid 5242] <... futex resumed>) = 1 [pid 5241] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5242] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5241] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5242] <... openat resumed>) = 5 [pid 5242] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... futex resumed>) = 0 [pid 5242] <... futex resumed>) = 1 [pid 5241] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5242] write(4, "\x00\x00", 2 [pid 5241] <... futex resumed>) = 0 [pid 5241] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5242] <... write resumed>) = 2 [pid 5242] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... futex resumed>) = 0 [pid 5242] <... futex resumed>) = 1 [pid 5241] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5242] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5241] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5241] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5241] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5241] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5242] <... mmap resumed>) = 0x20000000 [pid 5242] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... clone resumed>, parent_tid=[5243], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5243 ./strace-static-x86_64: Process 5243 attached [pid 5242] <... futex resumed>) = 0 [pid 5241] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5243] set_robust_list(0x7f26566289e0, 24 [pid 5242] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5241] <... futex resumed>) = 0 [pid 5243] <... set_robust_list resumed>) = 0 [pid 5241] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5243] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5243] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5243] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] <... futex resumed>) = 0 [pid 5241] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5241] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5242] <... futex resumed>) = 0 [pid 5242] getdents64(-1, [pid 5243] <... futex resumed>) = 1 [pid 5242] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5243] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5242] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5241] <... futex resumed>) = 0 [pid 5242] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5241] exit_group(0) = ? [pid 5242] <... futex resumed>) = ? [pid 5243] <... futex resumed>) = ? [pid 5243] +++ exited with 0 +++ [pid 5242] +++ exited with 0 +++ [pid 5241] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5241, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./54/binderfs") = 0 umount2("./54/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./54/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./54/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./54/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 73.198205][ T5242] loop0: detected capacity change from 0 to 256 [ 73.207422][ T5242] exfat: Deprecated parameter 'utf8' [ 73.218531][ T5242] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) openat(AT_FDCWD, "./54/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5244 attached [pid 5244] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5244] chdir("./55") = 0 [pid 5078] <... clone resumed>, child_tidptr=0x555556b3a6d0) = 5244 [pid 5244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5244] setpgid(0, 0) = 0 [pid 5244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5244] write(3, "1000", 4) = 4 [pid 5244] close(3) = 0 [pid 5244] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5244] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5244] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5244] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5245 attached [pid 5245] set_robust_list(0x7f265ea299e0, 24 [pid 5244] <... clone resumed>, parent_tid=[5245], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5245 [pid 5245] <... set_robust_list resumed>) = 0 [pid 5244] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5244] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5245] memfd_create("syzkaller", 0) = 3 [pid 5245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5245] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5245] munmap(0x7f2656609000, 131072) = 0 [pid 5245] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5245] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5245] close(3) = 0 [pid 5245] mkdir("./file2", 0777) = 0 [pid 5245] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5245] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5245] chdir("./file2") = 0 [pid 5245] ioctl(4, LOOP_CLR_FD) = 0 [pid 5245] close(4) = 0 [pid 5245] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5245] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5244] <... futex resumed>) = 0 [pid 5244] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5245] <... futex resumed>) = 0 [pid 5244] <... futex resumed>) = 1 [pid 5245] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5244] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5245] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5245] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5244] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5244] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5245] <... futex resumed>) = 0 [pid 5244] <... futex resumed>) = 1 [pid 5245] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5244] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5245] <... openat resumed>) = 5 [pid 5245] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5245] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5244] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5244] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5245] <... futex resumed>) = 0 [pid 5244] <... futex resumed>) = 1 [pid 5245] write(4, "\x00\x00", 2 [pid 5244] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5245] <... write resumed>) = 2 [pid 5245] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5244] <... futex resumed>) = 0 [pid 5245] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5244] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5245] <... mmap resumed>) = 0x20000000 [pid 5244] <... futex resumed>) = 0 [pid 5244] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5245] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5244] <... futex resumed>) = 0 [pid 5245] <... futex resumed>) = 0 [pid 5244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5245] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5244] <... mmap resumed>) = 0x7f2656608000 [pid 5244] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5244] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5246 attached , parent_tid=[5246], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5246 [pid 5246] set_robust_list(0x7f26566289e0, 24 [pid 5244] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5246] <... set_robust_list resumed>) = 0 [pid 5244] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5246] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5246] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5246] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5244] <... futex resumed>) = 0 [pid 5244] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5245] <... futex resumed>) = 0 [pid 5245] getdents64(-1, [pid 5244] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5245] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5246] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5245] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5244] <... futex resumed>) = 0 [pid 5245] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5244] exit_group(0 [pid 5246] <... futex resumed>) = ? [pid 5245] <... futex resumed>) = ? [pid 5244] <... exit_group resumed>) = ? [pid 5246] +++ exited with 0 +++ [pid 5245] +++ exited with 0 +++ [pid 5244] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5244, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./55/binderfs") = 0 umount2("./55/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 73.312631][ T5245] loop0: detected capacity change from 0 to 256 [ 73.322419][ T5245] exfat: Deprecated parameter 'utf8' [ 73.331979][ T5245] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./55/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./55/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./55/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5247 attached , child_tidptr=0x555556b3a6d0) = 5247 [pid 5247] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5247] chdir("./56") = 0 [pid 5247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5247] setpgid(0, 0) = 0 [pid 5247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5247] write(3, "1000", 4) = 4 [pid 5247] close(3) = 0 [pid 5247] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5247] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5247] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5247] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5247] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5248 attached [pid 5248] set_robust_list(0x7f265ea299e0, 24 [pid 5247] <... clone resumed>, parent_tid=[5248], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5248 [pid 5248] <... set_robust_list resumed>) = 0 [pid 5247] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5247] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5248] memfd_create("syzkaller", 0) = 3 [pid 5248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5248] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5248] munmap(0x7f2656609000, 131072) = 0 [pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5248] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5248] close(3) = 0 [pid 5248] mkdir("./file2", 0777) = 0 [pid 5248] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5248] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5248] chdir("./file2") = 0 [pid 5248] ioctl(4, LOOP_CLR_FD) = 0 [pid 5248] close(4) = 0 [pid 5248] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5248] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5247] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5247] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5248] <... openat resumed>) = 4 [pid 5248] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5247] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5247] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5248] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5248] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5248] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5247] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5248] <... futex resumed>) = 0 [pid 5247] <... futex resumed>) = 1 [pid 5248] write(4, "\x00\x00", 2 [pid 5247] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5248] <... write resumed>) = 2 [pid 5248] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5248] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5247] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5248] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5247] <... futex resumed>) = 0 [pid 5248] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5247] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5248] <... mmap resumed>) = 0x20000000 [pid 5247] <... futex resumed>) = 0 [pid 5248] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5247] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5248] <... futex resumed>) = 0 [pid 5248] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5247] <... mmap resumed>) = 0x7f2656608000 [pid 5247] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5247] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5249], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5249 ./strace-static-x86_64: Process 5249 attached [pid 5247] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5247] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5249] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5249] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5249] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5249] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5247] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5248] <... futex resumed>) = 0 [pid 5247] <... futex resumed>) = 1 [pid 5248] getdents64(-1, [pid 5247] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5248] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5248] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5249] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5248] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5247] exit_group(0 [pid 5248] <... futex resumed>) = ? [pid 5247] <... exit_group resumed>) = ? [pid 5249] <... futex resumed>) = ? [pid 5248] +++ exited with 0 +++ [pid 5249] +++ exited with 0 +++ [pid 5247] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5247, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 73.437685][ T5248] loop0: detected capacity change from 0 to 256 [ 73.448494][ T5248] exfat: Deprecated parameter 'utf8' [ 73.459448][ T5248] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) unlink("./56/binderfs") = 0 umount2("./56/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./56/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./56/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./56/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5250 attached , child_tidptr=0x555556b3a6d0) = 5250 [pid 5250] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5250] chdir("./57") = 0 [pid 5250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5250] setpgid(0, 0) = 0 [pid 5250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5250] write(3, "1000", 4) = 4 [pid 5250] close(3) = 0 [pid 5250] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5250] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5250] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5250] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5251 attached [pid 5251] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5251] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5250] <... clone resumed>, parent_tid=[5251], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5251 [pid 5250] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5251] <... futex resumed>) = 0 [pid 5250] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5251] memfd_create("syzkaller", 0) = 3 [pid 5251] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5251] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5251] munmap(0x7f2656609000, 131072) = 0 [pid 5251] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5251] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5251] close(3) = 0 [pid 5251] mkdir("./file2", 0777) = 0 [pid 5251] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5251] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5251] chdir("./file2") = 0 [pid 5251] ioctl(4, LOOP_CLR_FD) = 0 [pid 5251] close(4) = 0 [pid 5251] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] <... futex resumed>) = 0 [pid 5250] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5251] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5251] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5250] <... futex resumed>) = 0 [pid 5250] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5251] <... futex resumed>) = 1 [pid 5251] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5251] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5250] <... futex resumed>) = 0 [pid 5250] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5251] <... futex resumed>) = 1 [pid 5251] write(4, "\x00\x00", 2) = 2 [pid 5251] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5250] <... futex resumed>) = 0 [pid 5250] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5250] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5250] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5252], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5252 [pid 5250] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5251] <... futex resumed>) = 1 [pid 5251] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5251] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5251] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5252 attached [pid 5252] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5252] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5252] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5252] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] <... futex resumed>) = 0 [pid 5250] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5251] <... futex resumed>) = 0 [pid 5250] <... futex resumed>) = 1 [pid 5251] getdents64(-1, [pid 5250] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5251] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5251] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] <... futex resumed>) = 0 [pid 5251] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5250] exit_group(0 [pid 5251] <... futex resumed>) = ? [pid 5250] <... exit_group resumed>) = ? [pid 5251] +++ exited with 0 +++ [pid 5252] +++ exited with 0 +++ [pid 5250] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5250, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./57/binderfs") = 0 [ 73.571688][ T5251] loop0: detected capacity change from 0 to 256 [ 73.582998][ T5251] exfat: Deprecated parameter 'utf8' [ 73.593797][ T5251] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./57/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./57/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./57/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./57/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5253 ./strace-static-x86_64: Process 5253 attached [pid 5253] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5253] chdir("./58") = 0 [pid 5253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5253] setpgid(0, 0) = 0 [pid 5253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5253] write(3, "1000", 4) = 4 [pid 5253] close(3) = 0 [pid 5253] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5253] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5253] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5253] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5253] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5254], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5254 [pid 5253] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5253] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5254 attached [pid 5254] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5254] memfd_create("syzkaller", 0) = 3 [pid 5254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5254] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5254] munmap(0x7f2656609000, 131072) = 0 [pid 5254] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5254] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5254] close(3) = 0 [pid 5254] mkdir("./file2", 0777) = 0 [pid 5254] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5254] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5254] chdir("./file2") = 0 [pid 5254] ioctl(4, LOOP_CLR_FD) = 0 [pid 5254] close(4) = 0 [pid 5254] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5253] <... futex resumed>) = 0 [pid 5254] <... futex resumed>) = 1 [pid 5253] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5253] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5254] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5254] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5253] <... futex resumed>) = 0 [pid 5254] <... futex resumed>) = 1 [pid 5253] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5254] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5253] <... futex resumed>) = 0 [pid 5253] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5254] <... openat resumed>) = 5 [pid 5254] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5253] <... futex resumed>) = 0 [pid 5254] <... futex resumed>) = 1 [pid 5253] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5253] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5254] write(4, "\x00\x00", 2) = 2 [pid 5254] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5253] <... futex resumed>) = 0 [pid 5254] <... futex resumed>) = 1 [pid 5253] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5253] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5253] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5253] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5253] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5255], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5255 [pid 5253] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5253] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5254] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 ./strace-static-x86_64: Process 5255 attached [pid 5255] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5255] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5255] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5255] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5253] <... futex resumed>) = 0 [pid 5253] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5253] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5255] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5255] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5253] <... futex resumed>) = 0 [pid 5255] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5254] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5253] exit_group(0 [pid 5255] <... futex resumed>) = ? [ 73.676611][ T5254] loop0: detected capacity change from 0 to 256 [ 73.683173][ T5080] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 73.687077][ T5254] exfat: Deprecated parameter 'utf8' [ 73.704204][ T5254] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5253] <... exit_group resumed>) = ? [pid 5255] +++ exited with 0 +++ [pid 5254] +++ exited with 0 +++ [pid 5253] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5253, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./58/binderfs") = 0 umount2("./58/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./58/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./58/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./58/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5256 ./strace-static-x86_64: Process 5256 attached [pid 5256] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5256] chdir("./59") = 0 [pid 5256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5256] setpgid(0, 0) = 0 [pid 5256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5256] write(3, "1000", 4) = 4 [pid 5256] close(3) = 0 [pid 5256] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5256] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5256] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5256] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5256] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5257 attached , parent_tid=[5257], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5257 [pid 5257] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5257] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5256] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5257] <... futex resumed>) = 0 [pid 5256] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5257] memfd_create("syzkaller", 0) = 3 [pid 5257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5257] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5257] munmap(0x7f2656609000, 131072) = 0 [pid 5257] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5257] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5257] close(3) = 0 [pid 5257] mkdir("./file2", 0777) = 0 [pid 5257] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5257] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5257] chdir("./file2") = 0 [pid 5257] ioctl(4, LOOP_CLR_FD) = 0 [pid 5257] close(4) = 0 [pid 5257] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5256] <... futex resumed>) = 0 [pid 5257] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5256] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5257] <... futex resumed>) = 0 [pid 5256] <... futex resumed>) = 1 [pid 5257] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5256] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5257] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5256] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5257] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5256] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5257] <... futex resumed>) = 0 [pid 5256] <... futex resumed>) = 1 [pid 5257] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5256] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5257] <... openat resumed>) = 5 [pid 5257] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5256] <... futex resumed>) = 0 [pid 5257] write(4, "\x00\x00", 2 [pid 5256] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5257] <... write resumed>) = 2 [pid 5256] <... futex resumed>) = 0 [pid 5256] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5257] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5256] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5257] <... futex resumed>) = 0 [pid 5256] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5257] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5256] <... futex resumed>) = 0 [pid 5257] <... mmap resumed>) = 0x20000000 [pid 5256] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5257] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5256] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5257] <... futex resumed>) = 0 [pid 5257] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5256] <... mmap resumed>) = 0x7f2656608000 [pid 5256] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5256] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5258], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5258 ./strace-static-x86_64: Process 5258 attached [pid 5256] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5258] set_robust_list(0x7f26566289e0, 24 [pid 5256] <... futex resumed>) = 0 [pid 5256] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5258] <... set_robust_list resumed>) = 0 [pid 5258] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5258] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5258] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5256] <... futex resumed>) = 0 [pid 5256] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5257] <... futex resumed>) = 0 [pid 5256] <... futex resumed>) = 1 [pid 5257] getdents64(-1, [pid 5256] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5257] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5257] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5258] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5257] <... futex resumed>) = 1 [pid 5256] <... futex resumed>) = 0 [pid 5257] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5256] exit_group(0 [pid 5257] <... futex resumed>) = ? [pid 5256] <... exit_group resumed>) = ? [pid 5257] +++ exited with 0 +++ [pid 5258] <... futex resumed>) = ? [pid 5258] +++ exited with 0 +++ [pid 5256] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5256, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./59/binderfs") = 0 [ 73.814464][ T5257] loop0: detected capacity change from 0 to 256 [ 73.824133][ T5257] exfat: Deprecated parameter 'utf8' [ 73.835651][ T5257] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./59/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./59/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./59/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./59/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5259 ./strace-static-x86_64: Process 5259 attached [pid 5259] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5259] chdir("./60") = 0 [pid 5259] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5259] setpgid(0, 0) = 0 [pid 5259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5259] write(3, "1000", 4) = 4 [pid 5259] close(3) = 0 [pid 5259] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5259] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5259] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5259] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5259] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5260 attached , parent_tid=[5260], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5260 [pid 5259] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5259] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5260] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5260] memfd_create("syzkaller", 0) = 3 [pid 5260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5260] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5260] munmap(0x7f2656609000, 131072) = 0 [pid 5260] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5260] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5260] close(3) = 0 [pid 5260] mkdir("./file2", 0777) = 0 [pid 5260] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5260] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5260] chdir("./file2") = 0 [pid 5260] ioctl(4, LOOP_CLR_FD) = 0 [pid 5260] close(4) = 0 [pid 5260] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] <... futex resumed>) = 0 [pid 5259] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5259] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5260] <... futex resumed>) = 1 [pid 5260] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5260] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] <... futex resumed>) = 0 [pid 5259] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5259] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5260] <... futex resumed>) = 1 [pid 5260] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5260] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5259] <... futex resumed>) = 0 [pid 5259] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5259] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5260] write(4, "\x00\x00", 2) = 2 [pid 5260] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5259] <... futex resumed>) = 0 [pid 5259] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5259] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5259] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5260] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5259] <... mmap resumed>) = 0x7f2656608000 [pid 5260] <... mmap resumed>) = 0x20000000 [pid 5259] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5260] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5260] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5259] <... mprotect resumed>) = 0 [pid 5259] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5261 attached , parent_tid=[5261], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5261 [pid 5261] set_robust_list(0x7f26566289e0, 24 [pid 5259] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5259] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5261] <... set_robust_list resumed>) = 0 [pid 5261] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5261] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5261] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] <... futex resumed>) = 0 [pid 5259] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5260] <... futex resumed>) = 0 [pid 5259] <... futex resumed>) = 1 [pid 5261] <... futex resumed>) = 1 [pid 5260] getdents64(-1, [pid 5259] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5261] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5260] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5260] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5259] <... futex resumed>) = 0 [pid 5260] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5259] exit_group(0 [pid 5261] <... futex resumed>) = ? [pid 5260] <... futex resumed>) = ? [pid 5259] <... exit_group resumed>) = ? [pid 5261] +++ exited with 0 +++ [pid 5260] +++ exited with 0 +++ [pid 5259] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5259, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./60/binderfs") = 0 [ 73.939744][ T5260] loop0: detected capacity change from 0 to 256 [ 73.949019][ T5260] exfat: Deprecated parameter 'utf8' [ 73.961148][ T5260] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./60/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./60/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./60/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./60/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5262 ./strace-static-x86_64: Process 5262 attached [pid 5262] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5262] chdir("./61") = 0 [pid 5262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5262] setpgid(0, 0) = 0 [pid 5262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5262] write(3, "1000", 4) = 4 [pid 5262] close(3) = 0 [pid 5262] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5262] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5262] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5262] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5262] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5263 attached [pid 5263] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5263] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5262] <... clone resumed>, parent_tid=[5263], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5263 [pid 5262] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5263] <... futex resumed>) = 0 [pid 5263] memfd_create("syzkaller", 0 [pid 5262] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5263] <... memfd_create resumed>) = 3 [pid 5263] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5263] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5263] munmap(0x7f2656609000, 131072) = 0 [pid 5263] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5263] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5263] close(3) = 0 [pid 5263] mkdir("./file2", 0777) = 0 [pid 5263] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5263] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5263] chdir("./file2") = 0 [pid 5263] ioctl(4, LOOP_CLR_FD) = 0 [pid 5263] close(4) = 0 [pid 5263] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5262] <... futex resumed>) = 0 [pid 5262] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5262] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5263] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5263] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] <... futex resumed>) = 0 [pid 5262] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5262] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5263] <... futex resumed>) = 1 [pid 5263] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5263] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] <... futex resumed>) = 0 [pid 5262] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5262] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5263] <... futex resumed>) = 1 [pid 5263] write(4, "\x00\x00", 2) = 2 [pid 5263] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] <... futex resumed>) = 0 [pid 5262] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5262] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5262] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5262] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5262] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5264], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5264 [pid 5262] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5262] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5263] <... futex resumed>) = 1 [pid 5263] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0./strace-static-x86_64: Process 5264 attached ) = 0x20000000 [pid 5264] set_robust_list(0x7f26566289e0, 24 [pid 5263] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5263] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] <... set_robust_list resumed>) = 0 [pid 5264] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5264] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5264] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] <... futex resumed>) = 0 [pid 5262] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5262] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5263] <... futex resumed>) = 0 [pid 5263] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5263] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] <... futex resumed>) = 0 [pid 5262] exit_group(0) = ? [pid 5263] <... futex resumed>) = ? [pid 5263] +++ exited with 0 +++ [pid 5264] <... futex resumed>) = ? [pid 5264] +++ exited with 0 +++ [pid 5262] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5262, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./61/binderfs") = 0 [ 74.074878][ T5263] loop0: detected capacity change from 0 to 256 [ 74.084460][ T5263] exfat: Deprecated parameter 'utf8' [ 74.094328][ T5263] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./61/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./61/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./61/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./61/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5265 ./strace-static-x86_64: Process 5265 attached [pid 5265] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5265] chdir("./62") = 0 [pid 5265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5265] setpgid(0, 0) = 0 [pid 5265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5265] write(3, "1000", 4) = 4 [pid 5265] close(3) = 0 [pid 5265] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5265] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5265] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5265] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5265] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5266], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5266 [pid 5265] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5265] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5266 attached [pid 5266] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5266] memfd_create("syzkaller", 0) = 3 [pid 5266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5266] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5266] munmap(0x7f2656609000, 131072) = 0 [pid 5266] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5266] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5266] close(3) = 0 [pid 5266] mkdir("./file2", 0777) = 0 [pid 5266] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5266] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5266] chdir("./file2") = 0 [pid 5266] ioctl(4, LOOP_CLR_FD) = 0 [pid 5266] close(4) = 0 [pid 5266] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5266] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5265] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5265] <... futex resumed>) = 0 [pid 5266] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5265] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5266] <... openat resumed>) = 4 [pid 5266] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5266] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5265] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5265] <... futex resumed>) = 0 [pid 5266] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5265] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5266] <... openat resumed>) = 5 [pid 5266] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5266] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5265] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5265] <... futex resumed>) = 0 [pid 5266] write(4, "\x00\x00", 2 [pid 5265] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5266] <... write resumed>) = 2 [pid 5266] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5266] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5265] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5265] <... futex resumed>) = 0 [pid 5266] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5265] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5266] <... mmap resumed>) = 0x20000000 [pid 5265] <... futex resumed>) = 0 [pid 5266] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5265] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5266] <... futex resumed>) = 0 [pid 5265] <... mmap resumed>) = 0x7f2656608000 [pid 5266] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5265] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5265] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5267 attached , parent_tid=[5267], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5267 [pid 5265] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5265] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5267] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5267] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5267] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5267] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5267] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5265] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5266] <... futex resumed>) = 0 [pid 5265] <... futex resumed>) = 1 [pid 5266] getdents64(-1, [pid 5265] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5266] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5266] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5266] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5265] exit_group(0 [pid 5267] <... futex resumed>) = ? [pid 5266] <... futex resumed>) = ? [pid 5265] <... exit_group resumed>) = ? [pid 5267] +++ exited with 0 +++ [pid 5266] +++ exited with 0 +++ [pid 5265] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5265, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./62/binderfs") = 0 umount2("./62/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./62/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./62/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./62/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 [ 74.199217][ T5266] loop0: detected capacity change from 0 to 256 [ 74.208707][ T5266] exfat: Deprecated parameter 'utf8' [ 74.218773][ T5266] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) rmdir("./62/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5268 ./strace-static-x86_64: Process 5268 attached [pid 5268] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5268] chdir("./63") = 0 [pid 5268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5268] setpgid(0, 0) = 0 [pid 5268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5268] write(3, "1000", 4) = 4 [pid 5268] close(3) = 0 [pid 5268] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5268] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5268] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5268] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5269], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5269 [pid 5268] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5269 attached [pid 5269] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5269] memfd_create("syzkaller", 0) = 3 [pid 5269] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5269] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5269] munmap(0x7f2656609000, 131072) = 0 [pid 5269] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5269] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5269] close(3) = 0 [pid 5269] mkdir("./file2", 0777) = 0 [pid 5269] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5269] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5269] chdir("./file2") = 0 [pid 5269] ioctl(4, LOOP_CLR_FD) = 0 [pid 5269] close(4) = 0 [pid 5269] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5268] <... futex resumed>) = 0 [pid 5268] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5269] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5269] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5268] <... futex resumed>) = 0 [pid 5268] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5269] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5269] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5268] <... futex resumed>) = 0 [pid 5268] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5269] <... futex resumed>) = 1 [pid 5269] write(4, "\x00\x00", 2) = 2 [pid 5269] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5268] <... futex resumed>) = 0 [pid 5268] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5268] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5268] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5270], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5270 ./strace-static-x86_64: Process 5270 attached [pid 5268] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5269] <... futex resumed>) = 1 [pid 5269] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5270] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5269] <... mmap resumed>) = 0x20000000 [pid 5270] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5269] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5269] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5270] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5270] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5268] <... futex resumed>) = 0 [pid 5268] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5269] <... futex resumed>) = 0 [pid 5268] <... futex resumed>) = 1 [pid 5269] getdents64(-1, [pid 5268] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5269] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5269] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5268] <... futex resumed>) = 0 [pid 5269] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5268] exit_group(0 [pid 5269] <... futex resumed>) = ? [pid 5268] <... exit_group resumed>) = ? [pid 5269] +++ exited with 0 +++ [pid 5270] +++ exited with 0 +++ [pid 5268] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5268, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 74.311475][ T5269] loop0: detected capacity change from 0 to 256 [ 74.312896][ T5080] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 74.333009][ T5269] exfat: Deprecated parameter 'utf8' [ 74.343831][ T5269] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./63/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./63/binderfs") = 0 umount2("./63/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./63/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./63/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./63/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5271 ./strace-static-x86_64: Process 5271 attached [pid 5271] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5271] chdir("./64") = 0 [pid 5271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5271] setpgid(0, 0) = 0 [pid 5271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5271] write(3, "1000", 4) = 4 [pid 5271] close(3) = 0 [pid 5271] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5271] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5271] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5271] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5271] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5272 attached , parent_tid=[5272], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5272 [pid 5272] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5272] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5271] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5272] <... futex resumed>) = 0 [pid 5272] memfd_create("syzkaller", 0 [pid 5271] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5272] <... memfd_create resumed>) = 3 [pid 5272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5272] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5272] munmap(0x7f2656609000, 131072) = 0 [pid 5272] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5272] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5272] close(3) = 0 [pid 5272] mkdir("./file2", 0777) = 0 [pid 5272] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5272] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5272] chdir("./file2") = 0 [pid 5272] ioctl(4, LOOP_CLR_FD) = 0 [pid 5272] close(4) = 0 [pid 5272] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5271] <... futex resumed>) = 0 [pid 5272] <... futex resumed>) = 1 [pid 5271] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5272] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5271] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5272] <... openat resumed>) = 4 [pid 5272] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5271] <... futex resumed>) = 0 [pid 5271] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5271] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5272] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5272] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5271] <... futex resumed>) = 0 [pid 5272] write(4, "\x00\x00", 2 [pid 5271] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5271] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5272] <... write resumed>) = 2 [pid 5272] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5271] <... futex resumed>) = 0 [pid 5271] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5272] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5271] <... futex resumed>) = 0 [pid 5271] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5272] <... mmap resumed>) = 0x20000000 [pid 5271] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5271] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5272] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5271] <... mprotect resumed>) = 0 [pid 5271] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5272] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5273 attached [pid 5271] <... clone resumed>, parent_tid=[5273], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5273 [pid 5272] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5271] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5271] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5273] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5273] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5273] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5273] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5271] <... futex resumed>) = 0 [pid 5271] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5272] <... futex resumed>) = 0 [pid 5271] <... futex resumed>) = 1 [pid 5272] getdents64(-1, [pid 5271] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5272] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5272] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5271] <... futex resumed>) = 0 [pid 5272] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5271] exit_group(0 [pid 5272] <... futex resumed>) = ? [pid 5271] <... exit_group resumed>) = ? [pid 5272] +++ exited with 0 +++ [pid 5273] +++ exited with 0 +++ [pid 5271] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5271, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./64/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./64/binderfs") = 0 umount2("./64/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./64/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./64/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./64/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 74.449880][ T5272] loop0: detected capacity change from 0 to 256 [ 74.458476][ T5272] exfat: Deprecated parameter 'utf8' [ 74.469963][ T5272] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5274 ./strace-static-x86_64: Process 5274 attached [pid 5274] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5274] chdir("./65") = 0 [pid 5274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5274] setpgid(0, 0) = 0 [pid 5274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5274] write(3, "1000", 4) = 4 [pid 5274] close(3) = 0 [pid 5274] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5274] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5274] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5274] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5274] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5275 attached , parent_tid=[5275], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5275 [pid 5275] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5275] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5274] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5275] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5274] <... futex resumed>) = 0 [pid 5274] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5275] memfd_create("syzkaller", 0) = 3 [pid 5275] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5275] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5275] munmap(0x7f2656609000, 131072) = 0 [pid 5275] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5275] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5275] close(3) = 0 [pid 5275] mkdir("./file2", 0777) = 0 [pid 5275] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5275] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5275] chdir("./file2") = 0 [pid 5275] ioctl(4, LOOP_CLR_FD) = 0 [pid 5275] close(4) = 0 [pid 5275] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5274] <... futex resumed>) = 0 [pid 5274] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5274] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5275] <... futex resumed>) = 1 [pid 5275] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5275] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5274] <... futex resumed>) = 0 [pid 5274] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5274] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5275] <... futex resumed>) = 1 [pid 5275] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5275] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5274] <... futex resumed>) = 0 [pid 5274] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5274] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5275] <... futex resumed>) = 1 [pid 5275] write(4, "\x00\x00", 2) = 2 [pid 5275] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5274] <... futex resumed>) = 0 [pid 5274] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5274] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5274] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5274] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5274] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5276], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5276 [pid 5274] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5274] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5275] <... futex resumed>) = 1 [pid 5275] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5275] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5275] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5276 attached [pid 5276] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5276] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5276] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5276] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5274] <... futex resumed>) = 0 [pid 5274] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5274] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5275] <... futex resumed>) = 0 [pid 5275] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5275] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5274] <... futex resumed>) = 0 [pid 5274] exit_group(0) = ? [pid 5275] +++ exited with 0 +++ [pid 5276] <... futex resumed>) = ? [pid 5276] +++ exited with 0 +++ [pid 5274] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5274, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./65", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./65/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./65/binderfs") = 0 umount2("./65/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./65/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./65/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./65/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5277 ./strace-static-x86_64: Process 5277 attached [pid 5277] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5277] chdir("./66") = 0 [ 74.566737][ T5275] loop0: detected capacity change from 0 to 256 [ 74.575656][ T5275] exfat: Deprecated parameter 'utf8' [ 74.586590][ T5275] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5277] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5277] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5278], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5278 ./strace-static-x86_64: Process 5278 attached [pid 5277] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5278] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5278] memfd_create("syzkaller", 0) = 3 [pid 5278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5278] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5278] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5278] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5278] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5278] chdir("./file2") = 0 [pid 5278] ioctl(4, LOOP_CLR_FD) = 0 [pid 5278] close(4) = 0 [pid 5278] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5277] <... futex resumed>) = 0 [pid 5277] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5278] <... futex resumed>) = 1 [pid 5278] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5278] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5277] <... futex resumed>) = 0 [pid 5278] <... futex resumed>) = 1 [pid 5277] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5277] <... futex resumed>) = 0 [pid 5277] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5278] <... openat resumed>) = 5 [pid 5278] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5277] <... futex resumed>) = 0 [pid 5278] write(4, "\x00\x00", 2 [pid 5277] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] <... write resumed>) = 2 [pid 5277] <... futex resumed>) = 0 [pid 5278] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5277] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5278] <... futex resumed>) = 0 [pid 5277] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5278] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5277] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] <... mmap resumed>) = 0x20000000 [pid 5277] <... futex resumed>) = 0 [pid 5277] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5277] <... futex resumed>) = 0 [pid 5278] <... futex resumed>) = 0 [pid 5277] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5278] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5277] <... mmap resumed>) = 0x7f2656608000 [pid 5277] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5277] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5279], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5279 [pid 5277] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5279 attached [pid 5279] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5279] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5279] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5279] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5277] <... futex resumed>) = 0 [pid 5277] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5278] <... futex resumed>) = 0 [pid 5277] <... futex resumed>) = 1 [pid 5278] getdents64(-1, [pid 5277] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5278] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5278] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5277] <... futex resumed>) = 0 [pid 5278] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5277] exit_group(0 [pid 5278] <... futex resumed>) = ? [pid 5277] <... exit_group resumed>) = ? [pid 5278] +++ exited with 0 +++ [pid 5279] <... futex resumed>) = ? [pid 5279] +++ exited with 0 +++ [pid 5277] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5277, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./66", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./66/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./66/binderfs") = 0 umount2("./66/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 74.674609][ T5278] loop0: detected capacity change from 0 to 256 [ 74.685266][ T5278] exfat: Deprecated parameter 'utf8' [ 74.695078][ T5278] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./66/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./66/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./66/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5280 ./strace-static-x86_64: Process 5280 attached [pid 5280] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5280] chdir("./67") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5280] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5280] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5280] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5281 attached , parent_tid=[5281], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5281 [pid 5280] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5280] <... futex resumed>) = 0 [pid 5280] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5281] memfd_create("syzkaller", 0) = 3 [pid 5281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5281] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5281] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5281] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5281] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5281] chdir("./file2") = 0 [pid 5281] ioctl(4, LOOP_CLR_FD) = 0 [pid 5281] close(4) = 0 [pid 5281] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5280] <... futex resumed>) = 0 [pid 5281] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5280] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5281] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5281] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5280] <... futex resumed>) = 0 [pid 5281] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5280] <... futex resumed>) = 0 [pid 5281] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5280] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5281] <... openat resumed>) = 5 [pid 5281] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5280] <... futex resumed>) = 0 [pid 5281] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5280] <... futex resumed>) = 0 [pid 5281] write(4, "\x00\x00", 2 [pid 5280] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5281] <... write resumed>) = 2 [pid 5281] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5280] <... futex resumed>) = 0 [pid 5281] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5280] <... futex resumed>) = 0 [pid 5280] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5280] <... futex resumed>) = 0 [pid 5280] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5281] <... mmap resumed>) = 0x20000000 [pid 5280] <... mmap resumed>) = 0x7f2656608000 [pid 5281] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5280] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5281] <... futex resumed>) = 0 [pid 5281] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] <... mprotect resumed>) = 0 [pid 5280] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5282 attached , parent_tid=[5282], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5282 [pid 5282] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5282] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5282] <... futex resumed>) = 0 [pid 5282] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5282] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5282] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5282] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5280] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] <... futex resumed>) = 0 [pid 5280] <... futex resumed>) = 1 [pid 5281] getdents64(-1, [pid 5280] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5281] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5281] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5280] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5281] <... futex resumed>) = 0 [pid 5281] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] exit_group(0 [pid 5281] <... futex resumed>) = ? [pid 5282] <... futex resumed>) = ? [pid 5280] <... exit_group resumed>) = ? [pid 5281] +++ exited with 0 +++ [pid 5282] +++ exited with 0 +++ [pid 5280] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5280, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 74.796393][ T5281] loop0: detected capacity change from 0 to 256 [ 74.804888][ T5281] exfat: Deprecated parameter 'utf8' [ 74.815468][ T5281] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./67", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./67/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./67/binderfs") = 0 umount2("./67/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./67/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./67/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./67/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5283 ./strace-static-x86_64: Process 5283 attached [pid 5283] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5283] chdir("./68") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5283] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5283] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5284 attached , parent_tid=[5284], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5284 [pid 5283] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5284] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5284] memfd_create("syzkaller", 0) = 3 [pid 5284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5284] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5284] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5284] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5284] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5284] chdir("./file2") = 0 [pid 5284] ioctl(4, LOOP_CLR_FD) = 0 [pid 5284] close(4) = 0 [pid 5284] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] <... futex resumed>) = 0 [pid 5284] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5283] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] <... openat resumed>) = 4 [pid 5284] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] <... futex resumed>) = 0 [pid 5283] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5284] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] <... futex resumed>) = 0 [pid 5283] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] write(4, "\x00\x00", 2) = 2 [pid 5284] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] <... futex resumed>) = 0 [pid 5283] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5283] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5283] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5285 attached , parent_tid=[5285], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5285 [pid 5285] set_robust_list(0x7f26566289e0, 24 [pid 5283] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5284] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5283] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5285] <... set_robust_list resumed>) = 0 [pid 5285] openat(AT_FDCWD, "", O_RDONLY [pid 5284] <... mmap resumed>) = 0x20000000 [pid 5284] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5285] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5285] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5284] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5283] <... futex resumed>) = 0 [pid 5285] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5283] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5284] getdents64(-1, [pid 5283] <... futex resumed>) = 0 [pid 5284] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5283] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5284] <... futex resumed>) = 0 [pid 5283] exit_group(0 [pid 5284] ???( [pid 5283] <... exit_group resumed>) = ? [pid 5284] <... ??? resumed>) = ? [pid 5285] <... futex resumed>) = ? [pid 5285] +++ exited with 0 +++ [pid 5284] +++ exited with 0 +++ [pid 5283] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5283, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./68", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./68/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./68/binderfs") = 0 [ 74.937488][ T5284] loop0: detected capacity change from 0 to 256 [ 74.947927][ T5284] exfat: Deprecated parameter 'utf8' [ 74.959203][ T5284] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./68/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./68/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./68/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./68/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5286 ./strace-static-x86_64: Process 5286 attached [pid 5286] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5286] chdir("./69") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5286] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5286] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5287 attached [pid 5287] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5287] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] <... clone resumed>, parent_tid=[5287], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5287 [pid 5286] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] <... futex resumed>) = 0 [pid 5286] <... futex resumed>) = 1 [pid 5287] memfd_create("syzkaller", 0) = 3 [pid 5287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5286] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5287] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5287] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5287] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5287] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5287] chdir("./file2") = 0 [pid 5287] ioctl(4, LOOP_CLR_FD) = 0 [pid 5287] close(4) = 0 [pid 5287] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] <... futex resumed>) = 0 [pid 5287] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5286] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] <... openat resumed>) = 4 [pid 5287] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] <... futex resumed>) = 0 [pid 5287] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5286] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] <... openat resumed>) = 5 [pid 5287] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] <... futex resumed>) = 0 [pid 5287] write(4, "\x00\x00", 2 [pid 5286] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] <... write resumed>) = 2 [pid 5286] <... futex resumed>) = 0 [pid 5287] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5286] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] <... futex resumed>) = 0 [pid 5286] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5287] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5286] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] <... mmap resumed>) = 0x20000000 [pid 5286] <... futex resumed>) = 0 [pid 5287] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5286] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] <... futex resumed>) = 0 [pid 5286] <... futex resumed>) = 0 [pid 5287] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5286] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5286] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5288], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5288 ./strace-static-x86_64: Process 5288 attached [pid 5286] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5288] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5288] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5288] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5288] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] <... futex resumed>) = 0 [pid 5286] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] <... futex resumed>) = 0 [pid 5286] <... futex resumed>) = 1 [pid 5288] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5287] getdents64(-1, [pid 5286] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5287] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] <... futex resumed>) = 0 [pid 5287] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] exit_group(0 [pid 5287] <... futex resumed>) = ? [pid 5286] <... exit_group resumed>) = ? [pid 5288] <... futex resumed>) = ? [pid 5287] +++ exited with 0 +++ [pid 5288] +++ exited with 0 +++ [pid 5286] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5286, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./69", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./69/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./69/binderfs") = 0 [ 75.069945][ T5287] loop0: detected capacity change from 0 to 256 [ 75.080398][ T5287] exfat: Deprecated parameter 'utf8' [ 75.090213][ T5287] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./69/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./69/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./69/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./69/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5289 ./strace-static-x86_64: Process 5289 attached [pid 5289] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5289] chdir("./70") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5289] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5289] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5290 attached [pid 5290] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5290] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] <... clone resumed>, parent_tid=[5290], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5290 [pid 5289] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5290] <... futex resumed>) = 0 [pid 5289] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5290] memfd_create("syzkaller", 0) = 3 [pid 5290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5290] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5290] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5290] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5290] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5290] chdir("./file2") = 0 [pid 5290] ioctl(4, LOOP_CLR_FD) = 0 [pid 5290] close(4) = 0 [pid 5290] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5289] <... futex resumed>) = 0 [pid 5289] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] <... futex resumed>) = 1 [pid 5290] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5290] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5289] <... futex resumed>) = 0 [pid 5289] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] <... futex resumed>) = 1 [pid 5290] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5290] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5289] <... futex resumed>) = 0 [pid 5289] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] <... futex resumed>) = 1 [pid 5290] write(4, "\x00\x00", 2) = 2 [pid 5290] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5289] <... futex resumed>) = 0 [pid 5289] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5289] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5289] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5291], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5291 [pid 5289] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] <... futex resumed>) = 1 [pid 5290] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5290] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5290] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5291 attached [pid 5291] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5291] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5291] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5291] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5289] <... futex resumed>) = 0 [pid 5289] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5290] <... futex resumed>) = 0 [pid 5289] <... futex resumed>) = 1 [pid 5290] getdents64(-1, [pid 5289] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5290] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5289] <... futex resumed>) = 0 [pid 5291] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5290] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] exit_group(0 [pid 5290] <... futex resumed>) = ? [pid 5289] <... exit_group resumed>) = ? [pid 5291] <... futex resumed>) = ? [pid 5290] +++ exited with 0 +++ [pid 5291] +++ exited with 0 +++ [pid 5289] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5289, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./70", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./70/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./70/binderfs") = 0 umount2("./70/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./70/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./70/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./70/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./70") = 0 [ 75.181761][ T5290] loop0: detected capacity change from 0 to 256 [ 75.191448][ T5290] exfat: Deprecated parameter 'utf8' [ 75.201539][ T5290] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) 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, child_tidptr=0x555556b3a6d0) = 5292 ./strace-static-x86_64: Process 5292 attached [pid 5292] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5292] chdir("./71") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5292] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5292] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5293 attached , parent_tid=[5293], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5293 [pid 5293] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5293] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5292] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5293] <... futex resumed>) = 0 [pid 5292] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5293] memfd_create("syzkaller", 0) = 3 [pid 5293] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5293] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5293] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5293] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5293] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5293] chdir("./file2") = 0 [pid 5293] ioctl(4, LOOP_CLR_FD) = 0 [pid 5293] close(4) = 0 [pid 5293] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... futex resumed>) = 1 [pid 5293] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5293] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... futex resumed>) = 1 [pid 5293] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5293] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... futex resumed>) = 1 [ 75.301571][ T5293] loop0: detected capacity change from 0 to 256 [ 75.320407][ T5293] exfat: Deprecated parameter 'utf8' [ 75.331359][ T5293] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5293] write(4, "\x00\x00", 2) = 2 [pid 5293] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5292] <... futex resumed>) = 0 [pid 5293] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5292] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5292] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5292] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5292] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5294], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5294 ./strace-static-x86_64: Process 5294 attached [pid 5292] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... futex resumed>) = 0 [pid 5293] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5294] set_robust_list(0x7f26566289e0, 24 [pid 5293] <... mmap resumed>) = 0x20000000 [pid 5293] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5293] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5294] <... set_robust_list resumed>) = 0 [pid 5294] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5294] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5294] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5292] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... futex resumed>) = 0 [pid 5293] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5293] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5292] <... futex resumed>) = 0 [pid 5292] exit_group(0) = ? [pid 5293] <... futex resumed>) = ? [pid 5293] +++ exited with 0 +++ [pid 5294] <... futex resumed>) = ? [pid 5294] +++ exited with 0 +++ [pid 5292] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5292, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./71", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./71/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./71/binderfs") = 0 umount2("./71/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./71/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./71/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./71/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5295 ./strace-static-x86_64: Process 5295 attached [pid 5295] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5295] chdir("./72") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5295] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5295] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5296], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5296 [pid 5295] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5296 attached [pid 5296] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5296] memfd_create("syzkaller", 0) = 3 [pid 5296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5296] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5296] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5296] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5296] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5296] chdir("./file2") = 0 [pid 5296] ioctl(4, LOOP_CLR_FD) = 0 [pid 5296] close(4) = 0 [pid 5296] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] <... futex resumed>) = 0 [pid 5296] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5295] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] <... openat resumed>) = 4 [pid 5296] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] <... futex resumed>) = 0 [pid 5296] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5295] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5296] <... openat resumed>) = 5 [pid 5295] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] <... futex resumed>) = 0 [pid 5296] write(4, "\x00\x00", 2 [pid 5295] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5296] <... write resumed>) = 2 [pid 5295] <... futex resumed>) = 0 [pid 5296] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5295] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] <... futex resumed>) = 0 [pid 5295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5296] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5295] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5296] <... mmap resumed>) = 0x20000000 [pid 5295] <... futex resumed>) = 0 [pid 5296] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5295] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5296] <... futex resumed>) = 0 [pid 5295] <... futex resumed>) = 0 [pid 5296] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5295] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5295] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5297 attached , parent_tid=[5297], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5297 [pid 5295] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5297] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5297] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5297] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5297] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] <... futex resumed>) = 0 [pid 5297] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5296] <... futex resumed>) = 0 [pid 5295] <... futex resumed>) = 1 [pid 5296] getdents64(-1, [pid 5295] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5296] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] <... futex resumed>) = 0 [pid 5296] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] exit_group(0 [pid 5297] <... futex resumed>) = ? [pid 5296] <... futex resumed>) = ? [pid 5295] <... exit_group resumed>) = ? [pid 5297] +++ exited with 0 +++ [pid 5296] +++ exited with 0 +++ [pid 5295] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5295, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./72", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./72/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./72/binderfs") = 0 umount2("./72/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./72/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 75.433830][ T5296] loop0: detected capacity change from 0 to 256 [ 75.443653][ T5296] exfat: Deprecated parameter 'utf8' [ 75.454144][ T5296] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) lstat("./72/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./72/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./72/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5298 ./strace-static-x86_64: Process 5298 attached [pid 5298] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5298] chdir("./73") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5298] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5298] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5299], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5299 ./strace-static-x86_64: Process 5299 attached [pid 5299] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5299] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5298] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5299] <... futex resumed>) = 0 [pid 5298] <... futex resumed>) = 1 [pid 5298] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5299] memfd_create("syzkaller", 0) = 3 [pid 5299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5299] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5299] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5299] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5299] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5299] chdir("./file2") = 0 [pid 5299] ioctl(4, LOOP_CLR_FD) = 0 [pid 5299] close(4) = 0 [pid 5299] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5298] <... futex resumed>) = 0 [pid 5299] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5298] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] <... openat resumed>) = 4 [pid 5299] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5298] <... futex resumed>) = 0 [pid 5299] <... futex resumed>) = 1 [pid 5299] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5298] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] <... openat resumed>) = 5 [pid 5299] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] write(4, "\x00\x00", 2) = 2 [pid 5299] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5298] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5298] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5300 attached , parent_tid=[5300], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5300 [pid 5300] set_robust_list(0x7f26566289e0, 24 [pid 5298] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5300] <... set_robust_list resumed>) = 0 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5300] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5299] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5300] <... openat resumed>) = 6 [pid 5300] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5299] <... mmap resumed>) = 0x20000000 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5300] <... futex resumed>) = 1 [pid 5299] <... futex resumed>) = 0 [pid 5300] getdents64(6, NULL, 32776) = -1 EFAULT (Bad address) [pid 5300] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5298] <... futex resumed>) = 0 [pid 5298] exit_group(0) = ? [pid 5300] <... futex resumed>) = ? [pid 5300] +++ exited with 0 +++ [pid 5299] +++ exited with 0 +++ [pid 5298] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5298, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./73", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./73/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./73/binderfs") = 0 [ 75.564534][ T5299] loop0: detected capacity change from 0 to 256 [ 75.575399][ T5299] exfat: Deprecated parameter 'utf8' [ 75.585324][ T5299] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./73/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./73/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./73/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./73/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5301 ./strace-static-x86_64: Process 5301 attached [pid 5301] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5301] chdir("./74") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5301] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5301] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5301] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5302], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5302 [pid 5301] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5301] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5302 attached [pid 5302] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5302] memfd_create("syzkaller", 0) = 3 [pid 5302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5302] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5302] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5302] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5302] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5302] chdir("./file2") = 0 [pid 5302] ioctl(4, LOOP_CLR_FD) = 0 [pid 5302] close(4) = 0 [pid 5302] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5301] <... futex resumed>) = 0 [pid 5302] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5302] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5301] <... futex resumed>) = 0 [pid 5301] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5302] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5301] <... futex resumed>) = 0 [pid 5301] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5301] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5302] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5301] <... futex resumed>) = 0 [pid 5301] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5302] write(4, "\x00\x00", 2 [pid 5301] <... futex resumed>) = 0 [pid 5301] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] <... write resumed>) = 2 [pid 5302] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5301] <... futex resumed>) = 0 [pid 5301] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5301] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5301] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5302] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5301] <... mmap resumed>) = 0x7f2656608000 [pid 5301] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5302] <... mmap resumed>) = 0x20000000 [pid 5301] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5302] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5301] <... clone resumed>, parent_tid=[5303], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5303 [pid 5301] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5302] <... futex resumed>) = 0 [pid 5301] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5303 attached [pid 5303] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5303] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5303] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5303] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5301] <... futex resumed>) = 0 [pid 5301] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5302] <... futex resumed>) = 0 [pid 5301] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5303] <... futex resumed>) = 1 [pid 5302] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5303] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5302] <... futex resumed>) = 1 [pid 5301] <... futex resumed>) = 0 [pid 5302] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] exit_group(0) = ? [pid 5302] <... futex resumed>) = ? [pid 5302] +++ exited with 0 +++ [pid 5303] <... futex resumed>) = ? [pid 5303] +++ exited with 0 +++ [pid 5301] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5301, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./74", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./74/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./74/binderfs") = 0 [ 75.680546][ T5302] loop0: detected capacity change from 0 to 256 [ 75.690292][ T5302] exfat: Deprecated parameter 'utf8' [ 75.701208][ T5302] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./74/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./74/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./74/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./74/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5304 ./strace-static-x86_64: Process 5304 attached [pid 5304] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5304] chdir("./75") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5304] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5304] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5305 attached , parent_tid=[5305], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5305 [pid 5304] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5305] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5305] memfd_create("syzkaller", 0) = 3 [pid 5304] <... futex resumed>) = 0 [pid 5305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5304] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5305] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5305] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5305] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5305] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5305] chdir("./file2") = 0 [pid 5305] ioctl(4, LOOP_CLR_FD) = 0 [pid 5305] close(4) = 0 [pid 5305] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] <... futex resumed>) = 0 [pid 5304] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5305] <... futex resumed>) = 1 [pid 5305] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5305] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] <... futex resumed>) = 0 [pid 5304] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5305] <... futex resumed>) = 1 [pid 5305] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5305] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] <... futex resumed>) = 0 [pid 5304] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5305] <... futex resumed>) = 1 [pid 5305] write(4, "\x00\x00", 2) = 2 [pid 5305] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] <... futex resumed>) = 0 [pid 5304] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5304] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5304] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5306 attached , parent_tid=[5306], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5306 [pid 5304] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5305] <... futex resumed>) = 1 [pid 5305] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5306] set_robust_list(0x7f26566289e0, 24 [pid 5305] <... mmap resumed>) = 0x20000000 [pid 5306] <... set_robust_list resumed>) = 0 [pid 5305] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5305] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5306] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5306] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5306] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5304] <... futex resumed>) = 0 [pid 5304] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5304] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5305] <... futex resumed>) = 0 [pid 5305] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5305] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] <... futex resumed>) = 0 [pid 5304] exit_group(0) = ? [pid 5305] <... futex resumed>) = ? [pid 5305] +++ exited with 0 +++ [pid 5306] +++ exited with 0 +++ [pid 5304] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5304, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./75", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./75/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./75/binderfs") = 0 [ 75.809157][ T5305] loop0: detected capacity change from 0 to 256 [ 75.818316][ T5305] exfat: Deprecated parameter 'utf8' [ 75.829292][ T5305] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./75/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./75/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./75/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./75/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5307 ./strace-static-x86_64: Process 5307 attached [pid 5307] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5307] chdir("./76") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5307] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5307] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5307] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5308 attached , parent_tid=[5308], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5308 [pid 5308] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5308] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5308] <... futex resumed>) = 0 [pid 5307] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5308] memfd_create("syzkaller", 0) = 3 [pid 5308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5308] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5308] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5308] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5308] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5308] chdir("./file2") = 0 [pid 5308] ioctl(4, LOOP_CLR_FD) = 0 [pid 5308] close(4) = 0 [pid 5308] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5307] <... futex resumed>) = 0 [pid 5308] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5307] <... futex resumed>) = 0 [pid 5308] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5307] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5308] <... openat resumed>) = 4 [pid 5308] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5307] <... futex resumed>) = 0 [pid 5308] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5307] <... futex resumed>) = 0 [pid 5308] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5307] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5308] <... openat resumed>) = 5 [pid 5308] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5307] <... futex resumed>) = 0 [pid 5308] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5307] <... futex resumed>) = 0 [pid 5308] write(4, "\x00\x00", 2 [pid 5307] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5308] <... write resumed>) = 2 [pid 5308] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5307] <... futex resumed>) = 0 [pid 5308] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5307] <... futex resumed>) = 0 [pid 5308] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5307] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... mmap resumed>) = 0x20000000 [pid 5307] <... futex resumed>) = 0 [pid 5308] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5307] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5308] <... futex resumed>) = 0 [pid 5307] <... mmap resumed>) = 0x7f2656608000 [pid 5308] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5307] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5309], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5309 [pid 5307] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5307] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5309 attached [pid 5309] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5309] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5309] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5309] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5307] <... futex resumed>) = 0 [pid 5307] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = 0 [pid 5307] <... futex resumed>) = 1 [pid 5308] getdents64(-1, [pid 5307] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5308] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5308] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5307] <... futex resumed>) = 0 [pid 5308] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5307] exit_group(0 [pid 5308] <... futex resumed>) = ? [pid 5307] <... exit_group resumed>) = ? [pid 5308] +++ exited with 0 +++ [pid 5309] <... futex resumed>) = ? [pid 5309] +++ exited with 0 +++ [pid 5307] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5307, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./76", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./76/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./76/binderfs") = 0 umount2("./76/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./76/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./76/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./76/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./76/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 [ 75.947861][ T5308] loop0: detected capacity change from 0 to 256 [ 75.957237][ T5308] exfat: Deprecated parameter 'utf8' [ 75.968774][ T5308] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) 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 5310 attached , child_tidptr=0x555556b3a6d0) = 5310 [pid 5310] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5310] chdir("./77") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5310] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5310] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5311 attached , parent_tid=[5311], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5311 [pid 5311] set_robust_list(0x7f265ea299e0, 24 [pid 5310] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5311] <... set_robust_list resumed>) = 0 [pid 5310] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5311] memfd_create("syzkaller", 0) = 3 [pid 5311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5311] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5311] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5311] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5311] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5311] chdir("./file2") = 0 [pid 5311] ioctl(4, LOOP_CLR_FD) = 0 [pid 5311] close(4) = 0 [pid 5311] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5310] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5311] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5310] <... futex resumed>) = 0 [pid 5310] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5311] <... openat resumed>) = 4 [pid 5311] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5310] <... futex resumed>) = 0 [pid 5311] <... futex resumed>) = 1 [pid 5310] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5311] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5310] <... futex resumed>) = 0 [pid 5310] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5311] <... openat resumed>) = 5 [pid 5311] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5310] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5311] write(4, "\x00\x00", 2) = 2 [pid 5311] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5310] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5310] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5310] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5312 attached , parent_tid=[5312], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5312 [pid 5310] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5312] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5312] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5311] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5311] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5311] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5312] <... openat resumed>) = 6 [pid 5312] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5312] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5310] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5311] <... futex resumed>) = 0 [pid 5310] <... futex resumed>) = 1 [pid 5311] getdents64(6, [pid 5310] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5311] <... getdents64 resumed>NULL, 32776) = -1 EFAULT (Bad address) [pid 5311] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5310] exit_group(0) = ? [pid 5311] +++ exited with 0 +++ [pid 5312] <... futex resumed>) = ? [pid 5312] +++ exited with 0 +++ [pid 5310] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5310, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./77", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./77/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 76.055779][ T5311] loop0: detected capacity change from 0 to 256 [ 76.067267][ T5311] exfat: Deprecated parameter 'utf8' [ 76.078816][ T5311] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) lstat("./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./77/binderfs") = 0 umount2("./77/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./77/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./77/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./77/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5313 ./strace-static-x86_64: Process 5313 attached [pid 5313] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5313] chdir("./78") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5313] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5313] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5314 attached , parent_tid=[5314], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5314 [pid 5313] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5314] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5314] memfd_create("syzkaller", 0) = 3 [pid 5314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5314] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5314] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5314] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5314] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5314] chdir("./file2") = 0 [pid 5314] ioctl(4, LOOP_CLR_FD) = 0 [pid 5314] close(4) = 0 [pid 5314] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5313] <... futex resumed>) = 0 [pid 5314] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5313] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5314] <... openat resumed>) = 4 [pid 5314] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5313] <... futex resumed>) = 0 [pid 5314] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5313] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5314] <... openat resumed>) = 5 [pid 5314] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5313] <... futex resumed>) = 0 [pid 5313] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5314] write(4, "\x00\x00", 2 [pid 5313] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5314] <... write resumed>) = 2 [pid 5314] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5313] <... futex resumed>) = 0 [pid 5313] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5314] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5313] <... mmap resumed>) = 0x7f2656608000 [pid 5313] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5314] <... mmap resumed>) = 0x20000000 [pid 5313] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5314] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5313] <... clone resumed>, parent_tid=[5315], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5315 [pid 5313] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5315 attached [pid 5315] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5315] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5314] <... futex resumed>) = 0 [pid 5315] openat(AT_FDCWD, "", O_RDONLY [pid 5314] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5315] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5315] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5313] <... futex resumed>) = 0 [pid 5313] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5313] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5315] <... futex resumed>) = 1 [pid 5315] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5314] <... futex resumed>) = 0 [pid 5314] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5314] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5313] <... futex resumed>) = 0 [pid 5314] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5313] exit_group(0) = ? [pid 5314] <... futex resumed>) = ? [pid 5315] <... futex resumed>) = ? [pid 5314] +++ exited with 0 +++ [pid 5315] +++ exited with 0 +++ [pid 5313] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5313, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- umount2("./78", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./78/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./78/binderfs") = 0 [ 76.198422][ T5314] loop0: detected capacity change from 0 to 256 [ 76.208431][ T5314] exfat: Deprecated parameter 'utf8' [ 76.219036][ T5314] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./78/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./78/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./78/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./78/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./78/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5316 ./strace-static-x86_64: Process 5316 attached [pid 5316] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5316] chdir("./79") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5316] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5316] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5317 attached , parent_tid=[5317], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5317 [pid 5317] set_robust_list(0x7f265ea299e0, 24 [pid 5316] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5317] <... set_robust_list resumed>) = 0 [pid 5316] <... futex resumed>) = 0 [pid 5317] memfd_create("syzkaller", 0 [pid 5316] futex(0x7f265eb037ac, 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) = 0x7f2656609000 [pid 5317] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5317] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5317] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5317] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5317] chdir("./file2") = 0 [pid 5317] ioctl(4, LOOP_CLR_FD) = 0 [pid 5317] close(4) = 0 [pid 5317] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5316] <... futex resumed>) = 0 [pid 5316] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5317] <... futex resumed>) = 1 [pid 5317] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5317] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5316] <... futex resumed>) = 0 [pid 5316] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5317] <... futex resumed>) = 1 [pid 5317] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5317] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5317] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5316] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5316] <... futex resumed>) = 0 [pid 5317] write(4, "\x00\x00", 2 [pid 5316] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5317] <... write resumed>) = 2 [pid 5317] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5317] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5316] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5316] <... futex resumed>) = 0 [pid 5317] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5316] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5317] <... mmap resumed>) = 0x20000000 [pid 5316] <... mmap resumed>) = 0x7f2656608000 [pid 5317] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5316] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5317] <... futex resumed>) = 0 [pid 5316] <... mprotect resumed>) = 0 [pid 5317] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5316] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5318 attached [pid 5318] set_robust_list(0x7f26566289e0, 24 [pid 5316] <... clone resumed>, parent_tid=[5318], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5318 [pid 5318] <... set_robust_list resumed>) = 0 [pid 5316] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5318] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5316] <... futex resumed>) = 0 [pid 5318] openat(AT_FDCWD, "", O_RDONLY [pid 5316] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5318] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5318] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5318] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5316] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5317] <... futex resumed>) = 0 [pid 5316] <... futex resumed>) = 1 [pid 5317] getdents64(-1, [pid 5316] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5317] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5317] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5317] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5316] exit_group(0 [pid 5318] <... futex resumed>) = ? [pid 5317] <... futex resumed>) = ? [pid 5316] <... exit_group resumed>) = ? [pid 5317] +++ exited with 0 +++ [pid 5318] +++ exited with 0 +++ [pid 5316] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5316, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./79", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./79/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./79/binderfs") = 0 [ 76.324020][ T5317] loop0: detected capacity change from 0 to 256 [ 76.332643][ T5317] exfat: Deprecated parameter 'utf8' [ 76.343506][ T5317] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./79/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./79/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./79/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./79/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./79/file2") = 0 getdents64(3, 0x555556b3b720 /* 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 5319 attached , child_tidptr=0x555556b3a6d0) = 5319 [pid 5319] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5319] chdir("./80") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5319] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5319] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5319] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5320 attached , parent_tid=[5320], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5320 [pid 5319] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5319] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5320] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5320] memfd_create("syzkaller", 0) = 3 [pid 5320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5320] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5320] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5320] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5320] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5320] chdir("./file2") = 0 [pid 5320] ioctl(4, LOOP_CLR_FD) = 0 [pid 5320] close(4) = 0 [pid 5320] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] <... futex resumed>) = 0 [pid 5319] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5319] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5320] <... futex resumed>) = 1 [pid 5320] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5320] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] <... futex resumed>) = 0 [pid 5319] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5319] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5320] <... futex resumed>) = 1 [pid 5320] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5320] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] <... futex resumed>) = 0 [pid 5319] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5319] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5320] <... futex resumed>) = 1 [pid 5320] write(4, "\x00\x00", 2) = 2 [pid 5320] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] <... futex resumed>) = 0 [pid 5319] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5319] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5319] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5319] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5319] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5321], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5321 [pid 5319] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 76.459039][ T5320] loop0: detected capacity change from 0 to 256 [ 76.471651][ T5320] exfat: Deprecated parameter 'utf8' [ 76.484145][ T5320] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5319] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5320] <... futex resumed>) = 1 [pid 5320] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5320] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5320] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5321 attached [pid 5321] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5321] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5321] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5321] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5319] <... futex resumed>) = 0 [pid 5321] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5319] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5320] <... futex resumed>) = 0 [pid 5319] <... futex resumed>) = 1 [pid 5319] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5320] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5320] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5319] <... futex resumed>) = 0 [pid 5320] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5319] exit_group(0 [pid 5321] <... futex resumed>) = ? [pid 5320] <... futex resumed>) = ? [pid 5319] <... exit_group resumed>) = ? [pid 5321] +++ exited with 0 +++ [pid 5320] +++ exited with 0 +++ [pid 5319] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5319, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./80", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./80/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./80/binderfs") = 0 umount2("./80/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./80/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./80/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./80/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./80/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5322 ./strace-static-x86_64: Process 5322 attached [pid 5322] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5322] chdir("./81") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5322] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5322] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5323], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5323 [pid 5322] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5323 attached [pid 5323] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5323] memfd_create("syzkaller", 0) = 3 [pid 5323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5323] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5323] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5323] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5323] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5323] chdir("./file2") = 0 [pid 5323] ioctl(4, LOOP_CLR_FD) = 0 [pid 5323] close(4) = 0 [pid 5323] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] <... futex resumed>) = 0 [pid 5322] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5323] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5323] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] <... futex resumed>) = 0 [pid 5322] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5323] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5323] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] <... futex resumed>) = 0 [pid 5322] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5323] write(4, "\x00\x00", 2) = 2 [pid 5323] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] <... futex resumed>) = 0 [pid 5322] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5323] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5322] <... mmap resumed>) = 0x7f2656608000 [pid 5322] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5322] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5324], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5324 [pid 5322] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 76.641933][ T5323] loop0: detected capacity change from 0 to 256 [ 76.654278][ T5323] exfat: Deprecated parameter 'utf8' [ 76.666912][ T5323] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5322] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5323] <... mmap resumed>) = 0x20000000 [pid 5323] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5323] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5324 attached [pid 5324] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5324] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5324] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5324] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] <... futex resumed>) = 0 [pid 5322] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5323] <... futex resumed>) = 0 [pid 5322] <... futex resumed>) = 1 [pid 5322] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5323] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5323] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] <... futex resumed>) = 0 [pid 5323] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5322] exit_group(0 [pid 5323] <... futex resumed>) = ? [pid 5322] <... exit_group resumed>) = ? [pid 5323] +++ exited with 0 +++ [pid 5324] +++ exited with 0 +++ [pid 5322] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5322, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./81/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./81/binderfs") = 0 umount2("./81/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./81/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./81/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./81/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./81/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5325 ./strace-static-x86_64: Process 5325 attached [pid 5325] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5325] chdir("./82") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5325] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5325] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5326], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5326 [pid 5325] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5326 attached [pid 5326] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5326] memfd_create("syzkaller", 0) = 3 [pid 5326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5326] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5326] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5326] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5326] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5326] chdir("./file2") = 0 [pid 5326] ioctl(4, LOOP_CLR_FD) = 0 [pid 5326] close(4) = 0 [pid 5326] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5325] <... futex resumed>) = 0 [pid 5325] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5326] <... futex resumed>) = 1 [pid 5326] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5326] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5325] <... futex resumed>) = 0 [pid 5325] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5326] <... futex resumed>) = 1 [pid 5326] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5326] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5325] <... futex resumed>) = 0 [pid 5325] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5326] <... futex resumed>) = 1 [pid 5326] write(4, "\x00\x00", 2) = 2 [pid 5326] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5325] <... futex resumed>) = 0 [pid 5325] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5325] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5325] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5327], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5327 [pid 5325] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5326] <... futex resumed>) = 1 [pid 5326] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0./strace-static-x86_64: Process 5327 attached ) = 0x20000000 [pid 5326] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 76.794255][ T5326] loop0: detected capacity change from 0 to 256 [ 76.806045][ T5326] exfat: Deprecated parameter 'utf8' [ 76.818709][ T5326] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5326] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5327] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5327] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5327] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5327] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5325] <... futex resumed>) = 0 [pid 5325] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5326] <... futex resumed>) = 0 [pid 5325] <... futex resumed>) = 1 [pid 5326] getdents64(-1, [pid 5325] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5326] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5326] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5325] <... futex resumed>) = 0 [pid 5327] <... futex resumed>) = 1 [pid 5326] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5325] exit_group(0 [pid 5326] <... futex resumed>) = ? [pid 5325] <... exit_group resumed>) = ? [pid 5327] +++ exited with 0 +++ [pid 5326] +++ exited with 0 +++ [pid 5325] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5325, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./82", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./82/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./82/binderfs") = 0 umount2("./82/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./82/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./82/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./82/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./82/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5328 ./strace-static-x86_64: Process 5328 attached [pid 5328] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5328] chdir("./83") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5328] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5328] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5329], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5329 [pid 5328] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5329 attached [pid 5329] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5329] memfd_create("syzkaller", 0) = 3 [pid 5329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5329] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5329] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5329] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5329] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5329] chdir("./file2") = 0 [pid 5329] ioctl(4, LOOP_CLR_FD) = 0 [pid 5329] close(4) = 0 [pid 5329] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5328] <... futex resumed>) = 0 [pid 5328] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5329] <... futex resumed>) = 1 [pid 5329] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5329] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5328] <... futex resumed>) = 0 [pid 5328] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5329] <... futex resumed>) = 1 [pid 5329] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5329] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5328] <... futex resumed>) = 0 [pid 5328] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5329] <... futex resumed>) = 1 [pid 5329] write(4, "\x00\x00", 2) = 2 [pid 5329] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5328] <... futex resumed>) = 0 [pid 5328] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5328] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5328] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5330], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5330 [pid 5328] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5329] <... futex resumed>) = 1 [pid 5329] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5329] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5329] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5330 attached [pid 5330] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5330] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5330] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5330] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5328] <... futex resumed>) = 0 [pid 5328] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5329] <... futex resumed>) = 0 [pid 5328] <... futex resumed>) = 1 [pid 5329] getdents64(-1, [pid 5328] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5329] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5329] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5328] <... futex resumed>) = 0 [pid 5329] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5328] exit_group(0 [pid 5329] <... futex resumed>) = ? [pid 5328] <... exit_group resumed>) = ? [pid 5329] +++ exited with 0 +++ [pid 5330] <... futex resumed>) = ? [pid 5330] +++ exited with 0 +++ [pid 5328] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5328, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./83", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 [ 76.940972][ T5329] loop0: detected capacity change from 0 to 256 [ 76.953056][ T5329] exfat: Deprecated parameter 'utf8' [ 76.965837][ T5329] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./83/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./83/binderfs") = 0 umount2("./83/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./83/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./83/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./83/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./83/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5331 ./strace-static-x86_64: Process 5331 attached [pid 5331] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5331] chdir("./84") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5331] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5331] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5332], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5332 [pid 5331] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5332 attached [pid 5332] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5332] memfd_create("syzkaller", 0) = 3 [pid 5332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5332] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5332] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5332] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5332] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5332] chdir("./file2") = 0 [pid 5332] ioctl(4, LOOP_CLR_FD) = 0 [pid 5332] close(4) = 0 [pid 5332] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5331] <... futex resumed>) = 0 [pid 5331] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5332] <... futex resumed>) = 1 [pid 5332] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5332] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5331] <... futex resumed>) = 0 [pid 5331] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5332] <... futex resumed>) = 1 [pid 5332] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5332] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5331] <... futex resumed>) = 0 [pid 5331] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5332] write(4, "\x00\x00", 2) = 2 [pid 5332] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5331] <... futex resumed>) = 0 [pid 5331] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5331] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5331] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5333 attached , parent_tid=[5333], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5333 [pid 5333] set_robust_list(0x7f26566289e0, 24 [pid 5331] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5333] <... set_robust_list resumed>) = 0 [pid 5332] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5331] <... futex resumed>) = 0 [pid 5333] openat(AT_FDCWD, "", O_RDONLY [pid 5331] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5332] <... mmap resumed>) = 0x20000000 [pid 5333] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5332] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5333] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5332] <... futex resumed>) = 0 [pid 5331] <... futex resumed>) = 0 [pid 5333] <... futex resumed>) = 1 [pid 5332] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5331] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5333] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5331] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5332] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5332] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5331] <... futex resumed>) = 0 [pid 5332] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5331] exit_group(0 [pid 5332] <... futex resumed>) = ? [pid 5333] <... futex resumed>) = ? [pid 5331] <... exit_group resumed>) = ? [pid 5332] +++ exited with 0 +++ [pid 5333] +++ exited with 0 +++ [pid 5331] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5331, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./84/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./84/binderfs") = 0 [ 77.076679][ T5332] loop0: detected capacity change from 0 to 256 [ 77.089276][ T5332] exfat: Deprecated parameter 'utf8' [ 77.101178][ T5332] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./84/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./84/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./84/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./84/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./84/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5334 ./strace-static-x86_64: Process 5334 attached [pid 5334] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5334] chdir("./85") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5334] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5334] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5335], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5335 [pid 5334] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5334] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5335 attached [pid 5335] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5335] memfd_create("syzkaller", 0) = 3 [pid 5335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5335] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5335] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5335] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5335] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5335] chdir("./file2") = 0 [pid 5335] ioctl(4, LOOP_CLR_FD) = 0 [pid 5335] close(4) = 0 [pid 5335] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5334] <... futex resumed>) = 0 [pid 5334] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5334] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5335] <... futex resumed>) = 1 [pid 5335] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5335] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5334] <... futex resumed>) = 0 [pid 5334] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5334] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5335] <... futex resumed>) = 1 [pid 5335] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5335] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] <... futex resumed>) = 0 [pid 5334] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5334] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5335] write(4, "\x00\x00", 2) = 2 [pid 5335] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] <... futex resumed>) = 0 [pid 5335] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5334] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5334] <... futex resumed>) = 0 [pid 5335] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5334] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] <... mmap resumed>) = 0x20000000 [pid 5334] <... futex resumed>) = 0 [pid 5335] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5335] <... futex resumed>) = 0 [pid 5334] <... mmap resumed>) = 0x7f2656608000 [pid 5335] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5334] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5334] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5336 attached , parent_tid=[5336], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5336 [pid 5334] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5334] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5336] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5336] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5336] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5336] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] <... futex resumed>) = 0 [pid 5336] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5334] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] <... futex resumed>) = 0 [pid 5334] <... futex resumed>) = 1 [pid 5335] getdents64(-1, [pid 5334] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5335] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5335] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] <... futex resumed>) = 0 [pid 5335] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5334] exit_group(0 [pid 5336] <... futex resumed>) = ? [pid 5335] <... futex resumed>) = ? [pid 5334] <... exit_group resumed>) = ? [pid 5336] +++ exited with 0 +++ [pid 5335] +++ exited with 0 +++ [pid 5334] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5334, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./85", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./85/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./85/binderfs") = 0 umount2("./85/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./85/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./85/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./85/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 [ 77.188265][ T5335] loop0: detected capacity change from 0 to 256 [ 77.198296][ T5335] exfat: Deprecated parameter 'utf8' [ 77.209927][ T5335] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) rmdir("./85/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5337 ./strace-static-x86_64: Process 5337 attached [pid 5337] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5337] chdir("./86") = 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(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5337] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5337] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5338 attached , parent_tid=[5338], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5338 [pid 5338] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5338] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5337] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5338] <... futex resumed>) = 0 [pid 5337] futex(0x7f265eb037ac, 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) = 0x7f2656609000 [pid 5338] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5338] munmap(0x7f2656609000, 131072) = 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("./file2", 0777) = 0 [pid 5338] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5338] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5338] chdir("./file2") = 0 [pid 5338] ioctl(4, LOOP_CLR_FD) = 0 [pid 5338] close(4) = 0 [pid 5338] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5337] <... futex resumed>) = 0 [pid 5337] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5338] <... futex resumed>) = 1 [pid 5338] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5338] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5337] <... futex resumed>) = 0 [pid 5337] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5338] <... futex resumed>) = 1 [pid 5338] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5338] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5337] <... futex resumed>) = 0 [pid 5337] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5338] <... futex resumed>) = 1 [pid 5338] write(4, "\x00\x00", 2) = 2 [pid 5338] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5337] <... futex resumed>) = 0 [pid 5337] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5337] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5337] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5339], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5339 [pid 5337] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5337] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5338] <... futex resumed>) = 1 [pid 5338] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5338] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5338] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5339 attached [pid 5339] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5339] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5339] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5339] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5337] <... futex resumed>) = 0 [pid 5337] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5337] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5338] <... futex resumed>) = 0 [pid 5338] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5338] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5337] <... futex resumed>) = 0 [pid 5337] exit_group(0) = ? [pid 5338] +++ exited with 0 +++ [pid 5339] <... futex resumed>) = ? [pid 5339] +++ exited with 0 +++ [pid 5337] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5337, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./86", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./86/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./86/binderfs") = 0 umount2("./86/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./86/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./86/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./86/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./86/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5340 ./strace-static-x86_64: Process 5340 attached [pid 5340] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5340] chdir("./87") = 0 [pid 5340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5340] setpgid(0, 0) = 0 [pid 5340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5340] write(3, "1000", 4) = 4 [pid 5340] close(3) = 0 [pid 5340] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5340] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 77.304300][ T5338] loop0: detected capacity change from 0 to 256 [ 77.314006][ T5338] exfat: Deprecated parameter 'utf8' [ 77.323974][ T5338] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5340] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5340] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5341], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5341 [pid 5340] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5341 attached [pid 5341] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5341] memfd_create("syzkaller", 0) = 3 [pid 5341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5341] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5341] munmap(0x7f2656609000, 131072) = 0 [pid 5341] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5341] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5341] close(3) = 0 [pid 5341] mkdir("./file2", 0777) = 0 [pid 5341] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5341] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5341] chdir("./file2") = 0 [pid 5341] ioctl(4, LOOP_CLR_FD) = 0 [pid 5341] close(4) = 0 [pid 5341] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5340] <... futex resumed>) = 0 [pid 5340] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5341] <... futex resumed>) = 1 [pid 5341] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5341] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5340] <... futex resumed>) = 0 [pid 5340] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5341] <... futex resumed>) = 1 [pid 5341] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5341] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5340] <... futex resumed>) = 0 [pid 5340] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5341] <... futex resumed>) = 1 [pid 5341] write(4, "\x00\x00", 2) = 2 [pid 5341] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5340] <... futex resumed>) = 0 [pid 5340] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5340] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5340] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5342], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5342 [pid 5340] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5341] <... futex resumed>) = 1 ./strace-static-x86_64: Process 5342 attached [pid 5341] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5342] set_robust_list(0x7f26566289e0, 24 [pid 5341] <... mmap resumed>) = 0x20000000 [pid 5342] <... set_robust_list resumed>) = 0 [pid 5341] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5342] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5341] <... futex resumed>) = 0 [pid 5342] openat(AT_FDCWD, "", O_RDONLY [pid 5341] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5342] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5342] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5340] <... futex resumed>) = 0 [pid 5340] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5342] <... futex resumed>) = 1 [pid 5342] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5341] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5341] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5340] <... futex resumed>) = 0 [pid 5341] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5340] exit_group(0 [pid 5341] <... futex resumed>) = ? [pid 5340] <... exit_group resumed>) = ? [pid 5341] +++ exited with 0 +++ [pid 5342] <... futex resumed>) = ? [pid 5342] +++ exited with 0 +++ [pid 5340] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5340, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./87", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./87/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./87/binderfs") = 0 [ 77.394371][ T5341] loop0: detected capacity change from 0 to 256 [ 77.402909][ T5341] exfat: Deprecated parameter 'utf8' [ 77.414587][ T5341] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./87/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./87/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./87/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./87/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./87/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5343 ./strace-static-x86_64: Process 5343 attached [pid 5343] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5343] chdir("./88") = 0 [pid 5343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5343] setpgid(0, 0) = 0 [pid 5343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5343] write(3, "1000", 4) = 4 [pid 5343] close(3) = 0 [pid 5343] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5343] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5343] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5343] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5344 attached , parent_tid=[5344], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5344 [pid 5344] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5344] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5343] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5344] <... futex resumed>) = 0 [pid 5343] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5344] memfd_create("syzkaller", 0) = 3 [pid 5344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5344] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5344] munmap(0x7f2656609000, 131072) = 0 [pid 5344] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5344] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5344] close(3) = 0 [pid 5344] mkdir("./file2", 0777) = 0 [pid 5344] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5344] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5344] chdir("./file2") = 0 [pid 5344] ioctl(4, LOOP_CLR_FD) = 0 [pid 5344] close(4) = 0 [pid 5344] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5344] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5343] <... futex resumed>) = 0 [pid 5343] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5343] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5344] <... futex resumed>) = 0 [pid 5344] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5344] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5343] <... futex resumed>) = 0 [pid 5343] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5343] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5344] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5344] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5343] <... futex resumed>) = 0 [pid 5343] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5343] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5344] write(4, "\x00\x00", 2) = 2 [pid 5344] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5343] <... futex resumed>) = 0 [pid 5343] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5343] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5343] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5343] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5345], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5345 [pid 5343] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5343] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5345 attached [pid 5345] set_robust_list(0x7f26566289e0, 24 [pid 5344] <... futex resumed>) = 1 [pid 5345] <... set_robust_list resumed>) = 0 [pid 5345] openat(AT_FDCWD, "./file0", O_RDONLY) = 6 [pid 5344] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5345] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5343] <... futex resumed>) = 0 [pid 5343] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5345] <... futex resumed>) = 1 [pid 5344] <... mmap resumed>) = 0x20000000 [pid 5343] <... futex resumed>) = 0 [pid 5343] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5345] getdents64(6, NULL, 32776) = -1 EFAULT (Bad address) [pid 5345] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5343] <... futex resumed>) = 0 [pid 5345] <... futex resumed>) = 1 [pid 5345] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5344] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5344] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5343] exit_group(0 [pid 5345] <... futex resumed>) = ? [pid 5344] <... futex resumed>) = ? [pid 5343] <... exit_group resumed>) = ? [pid 5345] +++ exited with 0 +++ [pid 5344] +++ exited with 0 +++ [pid 5343] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5343, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./88", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./88/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 77.511924][ T5344] loop0: detected capacity change from 0 to 256 [ 77.521277][ T5344] exfat: Deprecated parameter 'utf8' [ 77.531825][ T5344] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) unlink("./88/binderfs") = 0 umount2("./88/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./88/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./88/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./88/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./88/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5346 ./strace-static-x86_64: Process 5346 attached [pid 5346] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5346] chdir("./89") = 0 [pid 5346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5346] setpgid(0, 0) = 0 [pid 5346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5346] write(3, "1000", 4) = 4 [pid 5346] close(3) = 0 [pid 5346] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5346] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5346] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5346] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5347 attached [pid 5347] set_robust_list(0x7f265ea299e0, 24 [pid 5346] <... clone resumed>, parent_tid=[5347], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5347 [pid 5347] <... set_robust_list resumed>) = 0 [pid 5346] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5346] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5347] memfd_create("syzkaller", 0) = 3 [pid 5347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5347] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5347] munmap(0x7f2656609000, 131072) = 0 [pid 5347] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5347] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5347] close(3) = 0 [pid 5347] mkdir("./file2", 0777) = 0 [pid 5347] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5347] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5347] chdir("./file2") = 0 [pid 5347] ioctl(4, LOOP_CLR_FD) = 0 [pid 5347] close(4) = 0 [pid 5347] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] <... futex resumed>) = 0 [pid 5346] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5347] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5346] <... futex resumed>) = 0 [pid 5346] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5347] <... openat resumed>) = 4 [pid 5347] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] <... futex resumed>) = 0 [pid 5347] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5346] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5346] <... futex resumed>) = 0 [pid 5347] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5346] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5347] <... openat resumed>) = 5 [pid 5347] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5347] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5346] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5346] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5347] <... futex resumed>) = 0 [pid 5346] <... futex resumed>) = 1 [pid 5347] write(4, "\x00\x00", 2 [pid 5346] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5347] <... write resumed>) = 2 [pid 5347] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] <... futex resumed>) = 0 [pid 5347] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5346] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5347] <... mmap resumed>) = 0x20000000 [pid 5346] <... futex resumed>) = 0 [pid 5347] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5346] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5347] <... futex resumed>) = 0 [pid 5346] <... futex resumed>) = 0 [pid 5347] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5346] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5346] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5348], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5348 [pid 5346] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5346] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5348 attached [pid 5348] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5348] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5348] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5348] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5346] <... futex resumed>) = 0 [pid 5346] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5347] <... futex resumed>) = 0 [pid 5346] <... futex resumed>) = 1 [pid 5347] getdents64(-1, [pid 5346] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5347] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5347] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] <... futex resumed>) = 0 [pid 5347] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5346] exit_group(0 [pid 5347] <... futex resumed>) = ? [pid 5346] <... exit_group resumed>) = ? [pid 5347] +++ exited with 0 +++ [pid 5348] <... futex resumed>) = ? [pid 5348] +++ exited with 0 +++ [pid 5346] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5346, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./89/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./89/binderfs") = 0 [ 77.641191][ T5347] loop0: detected capacity change from 0 to 256 [ 77.651178][ T5347] exfat: Deprecated parameter 'utf8' [ 77.661608][ T5347] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./89/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./89/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./89/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./89/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./89/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5349 ./strace-static-x86_64: Process 5349 attached [pid 5349] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5349] chdir("./90") = 0 [pid 5349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5349] setpgid(0, 0) = 0 [pid 5349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5349] write(3, "1000", 4) = 4 [pid 5349] close(3) = 0 [pid 5349] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5349] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5349] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5349] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5349] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5350 attached , parent_tid=[5350], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5350 [pid 5350] set_robust_list(0x7f265ea299e0, 24 [pid 5349] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5350] <... set_robust_list resumed>) = 0 [pid 5349] <... futex resumed>) = 0 [pid 5349] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5350] memfd_create("syzkaller", 0) = 3 [pid 5350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5350] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5350] munmap(0x7f2656609000, 131072) = 0 [pid 5350] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5350] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5350] close(3) = 0 [pid 5350] mkdir("./file2", 0777) = 0 [pid 5350] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5350] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5350] chdir("./file2") = 0 [pid 5350] ioctl(4, LOOP_CLR_FD) = 0 [pid 5350] close(4) = 0 [pid 5350] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] <... futex resumed>) = 0 [pid 5349] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5350] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5349] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5350] <... openat resumed>) = 4 [pid 5350] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] <... futex resumed>) = 0 [pid 5350] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5349] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5350] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5349] <... futex resumed>) = 0 [pid 5350] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5349] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5350] <... openat resumed>) = 5 [pid 5350] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] <... futex resumed>) = 0 [pid 5349] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5350] write(4, "\x00\x00", 2) = 2 [pid 5349] <... futex resumed>) = 0 [pid 5350] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5349] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5350] <... futex resumed>) = 0 [pid 5349] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5350] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5349] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5349] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5349] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5350] <... mmap resumed>) = 0x20000000 [pid 5349] <... mmap resumed>) = 0x7f2656608000 [pid 5349] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5350] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5349] <... mprotect resumed>) = 0 [pid 5349] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5351 attached [pid 5350] <... futex resumed>) = 0 [pid 5349] <... clone resumed>, parent_tid=[5351], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5351 [pid 5349] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5351] set_robust_list(0x7f26566289e0, 24 [pid 5350] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5349] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5351] <... set_robust_list resumed>) = 0 [pid 5351] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5351] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5351] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] <... futex resumed>) = 0 [pid 5349] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5350] <... futex resumed>) = 0 [pid 5349] <... futex resumed>) = 1 [pid 5351] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5350] getdents64(-1, [pid 5349] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5350] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5350] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] <... futex resumed>) = 0 [pid 5350] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5349] exit_group(0 [pid 5350] <... futex resumed>) = ? [pid 5349] <... exit_group resumed>) = ? [pid 5350] +++ exited with 0 +++ [pid 5351] <... futex resumed>) = ? [pid 5351] +++ exited with 0 +++ [pid 5349] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5349, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./90", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./90/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./90/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./90/binderfs") = 0 [ 77.763459][ T5350] loop0: detected capacity change from 0 to 256 [ 77.772128][ T5350] exfat: Deprecated parameter 'utf8' [ 77.783706][ T5350] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./90/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./90/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./90/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./90/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./90/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5352 ./strace-static-x86_64: Process 5352 attached [pid 5352] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5352] chdir("./91") = 0 [pid 5352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5352] setpgid(0, 0) = 0 [pid 5352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5352] write(3, "1000", 4) = 4 [pid 5352] close(3) = 0 [pid 5352] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5352] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5352] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5352] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5353 attached , parent_tid=[5353], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5353 [pid 5353] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5353] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5352] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5353] <... futex resumed>) = 0 [pid 5352] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5353] memfd_create("syzkaller", 0) = 3 [pid 5353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5353] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5353] munmap(0x7f2656609000, 131072) = 0 [pid 5353] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5353] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5353] close(3) = 0 [pid 5353] mkdir("./file2", 0777) = 0 [pid 5353] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5353] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5353] chdir("./file2") = 0 [pid 5353] ioctl(4, LOOP_CLR_FD) = 0 [pid 5353] close(4) = 0 [pid 5353] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5353] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5352] <... futex resumed>) = 0 [pid 5352] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5353] <... futex resumed>) = 0 [pid 5353] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5352] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5353] <... openat resumed>) = 4 [pid 5353] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5352] <... futex resumed>) = 0 [pid 5353] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5352] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5352] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5353] <... openat resumed>) = 5 [pid 5353] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5352] <... futex resumed>) = 0 [pid 5353] write(4, "\x00\x00", 2 [pid 5352] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5353] <... write resumed>) = 2 [pid 5353] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5352] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5352] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5352] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5353] <... futex resumed>) = 0 [pid 5352] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5352] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5354], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5354 ./strace-static-x86_64: Process 5354 attached [pid 5352] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5354] set_robust_list(0x7f26566289e0, 24 [pid 5352] <... futex resumed>) = 0 [pid 5354] <... set_robust_list resumed>) = 0 [pid 5352] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5354] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5353] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5354] <... openat resumed>) = 6 [pid 5354] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5352] <... futex resumed>) = 0 [ 77.898223][ T5353] loop0: detected capacity change from 0 to 256 [ 77.907499][ T5353] exfat: Deprecated parameter 'utf8' [ 77.918870][ T5353] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5353] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5352] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5352] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5354] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5353] <... futex resumed>) = 1 [pid 5352] <... futex resumed>) = 0 [pid 5352] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=48000000} [pid 5353] getdents64(6, NULL, 32776) = -1 EFAULT (Bad address) [pid 5353] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5352] <... futex resumed>) = 0 [pid 5352] exit_group(0 [pid 5354] <... futex resumed>) = ? [pid 5352] <... exit_group resumed>) = ? [pid 5354] +++ exited with 0 +++ [pid 5353] +++ exited with 0 +++ [pid 5352] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5352, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./91", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./91/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./91/binderfs") = 0 umount2("./91/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./91/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./91/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./91/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./91/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5355 ./strace-static-x86_64: Process 5355 attached [pid 5355] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5355] chdir("./92") = 0 [pid 5355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5355] setpgid(0, 0) = 0 [pid 5355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5355] write(3, "1000", 4) = 4 [pid 5355] close(3) = 0 [pid 5355] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5355] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5355] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5355] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5356], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5356 [pid 5355] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5355] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5356 attached [pid 5356] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5356] memfd_create("syzkaller", 0) = 3 [pid 5356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5356] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5356] munmap(0x7f2656609000, 131072) = 0 [pid 5356] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5356] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5356] close(3) = 0 [pid 5356] mkdir("./file2", 0777) = 0 [pid 5356] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5356] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5356] chdir("./file2") = 0 [pid 5356] ioctl(4, LOOP_CLR_FD) = 0 [pid 5356] close(4) = 0 [pid 5356] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5356] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5355] <... futex resumed>) = 0 [pid 5355] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5356] <... futex resumed>) = 0 [pid 5356] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5355] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5356] <... openat resumed>) = 4 [pid 5356] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5355] <... futex resumed>) = 0 [pid 5355] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5356] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5355] <... futex resumed>) = 0 [pid 5355] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5356] <... openat resumed>) = 5 [pid 5356] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5355] <... futex resumed>) = 0 [pid 5356] write(4, "\x00\x00", 2 [pid 5355] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5356] <... write resumed>) = 2 [pid 5355] <... futex resumed>) = 0 [pid 5356] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5355] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5356] <... futex resumed>) = 0 [pid 5355] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5355] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5355] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5356] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5355] <... futex resumed>) = 0 [pid 5355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5356] <... mmap resumed>) = 0x20000000 [pid 5356] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5355] <... mmap resumed>) = 0x7f2656608000 [pid 5355] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5356] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5355] <... mprotect resumed>) = 0 [pid 5355] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5357 attached , parent_tid=[5357], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5357 [pid 5357] set_robust_list(0x7f26566289e0, 24 [pid 5355] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5357] <... set_robust_list resumed>) = 0 [pid 5355] <... futex resumed>) = 0 [pid 5357] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5355] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5357] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5357] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5355] <... futex resumed>) = 0 [pid 5357] <... futex resumed>) = 1 [pid 5355] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5357] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5356] <... futex resumed>) = 0 [pid 5355] <... futex resumed>) = 1 [pid 5355] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5356] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5356] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5355] <... futex resumed>) = 0 [pid 5356] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5355] exit_group(0 [pid 5356] <... futex resumed>) = ? [pid 5355] <... exit_group resumed>) = ? [pid 5356] +++ exited with 0 +++ [pid 5357] <... futex resumed>) = ? [pid 5357] +++ exited with 0 +++ [pid 5355] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5355, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./92", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./92/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./92/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./92/binderfs") = 0 umount2("./92/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./92/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./92/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./92/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./92/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./92") = 0 mkdir("./93", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 78.041059][ T5356] loop0: detected capacity change from 0 to 256 [ 78.050132][ T5356] exfat: Deprecated parameter 'utf8' [ 78.060847][ T5356] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) 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=0x555556b3a6d0) = 5358 ./strace-static-x86_64: Process 5358 attached [pid 5358] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5358] chdir("./93") = 0 [pid 5358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5358] setpgid(0, 0) = 0 [pid 5358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5358] write(3, "1000", 4) = 4 [pid 5358] close(3) = 0 [pid 5358] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5358] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5358] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5358] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5359], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5359 ./strace-static-x86_64: Process 5359 attached [pid 5359] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5359] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5358] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5359] <... futex resumed>) = 0 [pid 5359] memfd_create("syzkaller", 0 [pid 5358] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5359] <... memfd_create resumed>) = 3 [pid 5359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5359] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5359] munmap(0x7f2656609000, 131072) = 0 [pid 5359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5359] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5359] close(3) = 0 [pid 5359] mkdir("./file2", 0777) = 0 [pid 5359] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5359] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5359] chdir("./file2") = 0 [pid 5359] ioctl(4, LOOP_CLR_FD) = 0 [pid 5359] close(4) = 0 [pid 5359] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5358] <... futex resumed>) = 0 [pid 5359] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5358] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5359] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5358] <... futex resumed>) = 0 [pid 5359] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5358] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5359] <... openat resumed>) = 4 [pid 5359] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5358] <... futex resumed>) = 0 [pid 5359] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5358] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5359] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5358] <... futex resumed>) = 0 [pid 5359] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5358] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5359] <... openat resumed>) = 5 [pid 5359] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5358] <... futex resumed>) = 0 [pid 5359] write(4, "\x00\x00", 2 [pid 5358] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5359] <... write resumed>) = 2 [pid 5358] <... futex resumed>) = 0 [pid 5359] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5358] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5359] <... futex resumed>) = 0 [pid 5358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5359] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5358] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5359] <... mmap resumed>) = 0x20000000 [pid 5358] <... futex resumed>) = 0 [pid 5359] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5358] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5359] <... futex resumed>) = 0 [pid 5358] <... futex resumed>) = 0 [pid 5359] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5358] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5358] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5360 attached , parent_tid=[5360], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5360 [pid 5358] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5358] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5360] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5360] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5360] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5360] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5358] <... futex resumed>) = 0 [pid 5360] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5358] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5359] <... futex resumed>) = 0 [pid 5358] <... futex resumed>) = 1 [pid 5359] getdents64(-1, [pid 5358] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5359] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5359] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5358] <... futex resumed>) = 0 [pid 5359] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5358] exit_group(0 [pid 5360] <... futex resumed>) = ? [pid 5359] <... futex resumed>) = ? [pid 5358] <... exit_group resumed>) = ? [pid 5360] +++ exited with 0 +++ [pid 5359] +++ exited with 0 +++ [pid 5358] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5358, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- umount2("./93", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./93/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./93/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./93/binderfs") = 0 umount2("./93/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./93/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./93/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./93/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 [ 78.148508][ T5359] loop0: detected capacity change from 0 to 256 [ 78.158378][ T5359] exfat: Deprecated parameter 'utf8' [ 78.168267][ T5359] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./93/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5361 ./strace-static-x86_64: Process 5361 attached [pid 5361] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5361] chdir("./94") = 0 [pid 5361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5361] setpgid(0, 0) = 0 [pid 5361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5361] write(3, "1000", 4) = 4 [pid 5361] close(3) = 0 [pid 5361] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5361] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5361] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5361] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5361] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5362 attached , parent_tid=[5362], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5362 [pid 5362] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5362] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5361] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5362] <... futex resumed>) = 0 [pid 5362] memfd_create("syzkaller", 0) = 3 [pid 5362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5362] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5362] munmap(0x7f2656609000, 131072) = 0 [pid 5362] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5362] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5362] close(3) = 0 [pid 5362] mkdir("./file2", 0777) = 0 [pid 5362] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5362] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5362] chdir("./file2") = 0 [pid 5362] ioctl(4, LOOP_CLR_FD) = 0 [pid 5362] close(4) = 0 [pid 5362] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] <... futex resumed>) = 0 [pid 5362] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5361] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5361] <... futex resumed>) = 0 [pid 5362] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5361] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5362] <... openat resumed>) = 4 [pid 5362] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] <... futex resumed>) = 0 [pid 5362] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5361] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5361] <... futex resumed>) = 0 [pid 5362] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5361] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5362] <... openat resumed>) = 5 [pid 5362] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] <... futex resumed>) = 0 [pid 5362] write(4, "\x00\x00", 2 [pid 5361] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5361] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5362] <... write resumed>) = 2 [pid 5362] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] <... futex resumed>) = 0 [pid 5362] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5361] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5361] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5361] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5362] <... mmap resumed>) = 0x20000000 [pid 5361] <... mmap resumed>) = 0x7f2656608000 [pid 5362] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5361] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5362] <... futex resumed>) = 0 [pid 5361] <... mprotect resumed>) = 0 [pid 5361] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5362] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5363 attached [pid 5363] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5363] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5361] <... clone resumed>, parent_tid=[5363], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5363 [pid 5361] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5363] <... futex resumed>) = 0 [pid 5361] <... futex resumed>) = 1 [pid 5363] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5361] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5363] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5363] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] <... futex resumed>) = 0 [pid 5363] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5361] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5362] <... futex resumed>) = 0 [pid 5362] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5362] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] <... futex resumed>) = 0 [pid 5362] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5361] exit_group(0 [pid 5363] <... futex resumed>) = ? [pid 5361] <... exit_group resumed>) = ? [pid 5363] +++ exited with 0 +++ [pid 5362] <... futex resumed>) = ? [pid 5362] +++ exited with 0 +++ [pid 5361] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5361, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./94", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./94/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./94/binderfs") = 0 [ 78.259840][ T5362] loop0: detected capacity change from 0 to 256 [ 78.269934][ T5362] exfat: Deprecated parameter 'utf8' [ 78.280475][ T5362] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./94/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./94/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./94/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./94/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./94/file2") = 0 getdents64(3, 0x555556b3b720 /* 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, child_tidptr=0x555556b3a6d0) = 5364 ./strace-static-x86_64: Process 5364 attached [pid 5364] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5364] chdir("./95") = 0 [pid 5364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5364] setpgid(0, 0) = 0 [pid 5364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5364] write(3, "1000", 4) = 4 [pid 5364] close(3) = 0 [pid 5364] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5364] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5364] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5364] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5365 attached , parent_tid=[5365], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5365 [pid 5365] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5365] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5364] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5364] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5365] <... futex resumed>) = 0 [pid 5365] memfd_create("syzkaller", 0) = 3 [pid 5365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5365] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5365] munmap(0x7f2656609000, 131072) = 0 [pid 5365] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5365] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5365] close(3) = 0 [pid 5365] mkdir("./file2", 0777) = 0 [pid 5365] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5365] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5365] chdir("./file2") = 0 [pid 5365] ioctl(4, LOOP_CLR_FD) = 0 [pid 5365] close(4) = 0 [pid 5365] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5364] <... futex resumed>) = 0 [pid 5364] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5365] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5364] <... futex resumed>) = 0 [pid 5364] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5365] <... openat resumed>) = 4 [pid 5365] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5364] <... futex resumed>) = 0 [pid 5365] <... futex resumed>) = 1 [pid 5364] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5364] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5365] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5365] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5364] <... futex resumed>) = 0 [pid 5365] <... futex resumed>) = 1 [pid 5364] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5364] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5365] write(4, "\x00\x00", 2) = 2 [pid 5365] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5364] <... futex resumed>) = 0 [pid 5365] <... futex resumed>) = 1 [pid 5364] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5364] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5364] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5364] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5366], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5366 [pid 5364] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5364] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5365] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5365] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5365] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5366 attached [pid 5366] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5366] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5366] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5366] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5364] <... futex resumed>) = 0 [pid 5366] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5364] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5365] <... futex resumed>) = 0 [pid 5364] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5365] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5365] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5364] <... futex resumed>) = 0 [pid 5364] exit_group(0 [pid 5365] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5364] <... exit_group resumed>) = ? [pid 5365] <... futex resumed>) = ? [pid 5365] +++ exited with 0 +++ [pid 5366] <... futex resumed>) = ? [pid 5366] +++ exited with 0 +++ [pid 5364] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5364, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./95", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./95", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./95/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./95/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./95/binderfs") = 0 umount2("./95/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./95/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./95/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./95/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 78.382621][ T5365] loop0: detected capacity change from 0 to 256 [ 78.391082][ T5365] exfat: Deprecated parameter 'utf8' [ 78.401365][ T5365] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) openat(AT_FDCWD, "./95/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./95/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./95") = 0 mkdir("./96", 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=0x555556b3a6d0) = 5367 ./strace-static-x86_64: Process 5367 attached [pid 5367] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5367] chdir("./96") = 0 [pid 5367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5367] setpgid(0, 0) = 0 [pid 5367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5367] write(3, "1000", 4) = 4 [pid 5367] close(3) = 0 [pid 5367] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5367] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5367] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5367] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5367] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5368], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5368 [pid 5367] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5367] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5368 attached [pid 5368] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5368] memfd_create("syzkaller", 0) = 3 [pid 5368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5368] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5368] munmap(0x7f2656609000, 131072) = 0 [pid 5368] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5368] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5368] close(3) = 0 [pid 5368] mkdir("./file2", 0777) = 0 [pid 5368] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5368] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5368] chdir("./file2") = 0 [pid 5368] ioctl(4, LOOP_CLR_FD) = 0 [pid 5368] close(4) = 0 [pid 5368] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5367] <... futex resumed>) = 0 [pid 5368] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5367] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5367] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5368] <... openat resumed>) = 4 [pid 5368] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5367] <... futex resumed>) = 0 [pid 5368] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5367] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5367] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5368] <... openat resumed>) = 5 [pid 5368] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5367] <... futex resumed>) = 0 [pid 5367] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5367] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5368] write(4, "\x00\x00", 2) = 2 [pid 5368] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5367] <... futex resumed>) = 0 [pid 5368] <... futex resumed>) = 1 [pid 5367] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5367] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5367] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5367] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5367] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5369 attached [pid 5369] set_robust_list(0x7f26566289e0, 24 [pid 5367] <... clone resumed>, parent_tid=[5369], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5369 [pid 5369] <... set_robust_list resumed>) = 0 [pid 5367] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5369] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5367] <... futex resumed>) = 0 [pid 5367] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5368] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5368] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5369] <... openat resumed>) = 6 [pid 5369] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5367] <... futex resumed>) = 0 [pid 5367] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5367] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5369] <... futex resumed>) = 1 [pid 5369] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5368] <... futex resumed>) = 1 [pid 5367] <... futex resumed>) = 0 [pid 5367] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} [pid 5368] getdents64(6, NULL, 32776) = -1 EFAULT (Bad address) [pid 5368] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5367] <... futex resumed>) = 0 [pid 5368] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5367] exit_group(0) = ? [pid 5368] <... futex resumed>) = ? [pid 5369] <... futex resumed>) = ? [pid 5368] +++ exited with 0 +++ [pid 5369] +++ exited with 0 +++ [pid 5367] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5367, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./96", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./96/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./96/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./96/binderfs") = 0 [ 78.503843][ T5368] loop0: detected capacity change from 0 to 256 [ 78.512843][ T5368] exfat: Deprecated parameter 'utf8' [ 78.523694][ T5368] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./96/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./96/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./96/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./96/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./96/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./96") = 0 mkdir("./97", 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=0x555556b3a6d0) = 5370 ./strace-static-x86_64: Process 5370 attached [pid 5370] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5370] chdir("./97") = 0 [pid 5370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5370] setpgid(0, 0) = 0 [pid 5370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5370] write(3, "1000", 4) = 4 [pid 5370] close(3) = 0 [pid 5370] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5370] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5370] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5370] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5370] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5371], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5371 ./strace-static-x86_64: Process 5371 attached [pid 5371] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5370] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5370] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5371] memfd_create("syzkaller", 0) = 3 [pid 5371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5371] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5371] munmap(0x7f2656609000, 131072) = 0 [pid 5371] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5371] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5371] close(3) = 0 [pid 5371] mkdir("./file2", 0777) = 0 [pid 5371] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5371] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5371] chdir("./file2") = 0 [pid 5371] ioctl(4, LOOP_CLR_FD) = 0 [pid 5371] close(4) = 0 [pid 5371] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5371] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5370] <... futex resumed>) = 0 [pid 5370] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5370] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5371] <... futex resumed>) = 0 [pid 5371] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5371] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5370] <... futex resumed>) = 0 [pid 5370] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5370] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5371] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5371] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5370] <... futex resumed>) = 0 [pid 5370] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5370] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5371] write(4, "\x00\x00", 2) = 2 [pid 5371] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5370] <... futex resumed>) = 0 [pid 5371] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5370] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5370] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5370] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5371] <... mmap resumed>) = 0x20000000 [pid 5370] <... mmap resumed>) = 0x7f2656608000 [pid 5370] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5371] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5370] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5372 attached [pid 5371] <... futex resumed>) = 0 [pid 5371] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5370] <... clone resumed>, parent_tid=[5372], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5372 [pid 5370] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5370] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5372] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5372] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5372] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5372] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5370] <... futex resumed>) = 0 [pid 5370] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5371] <... futex resumed>) = 0 [pid 5370] <... futex resumed>) = 1 [pid 5371] getdents64(-1, [pid 5370] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5371] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5371] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5370] <... futex resumed>) = 0 [pid 5371] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5370] exit_group(0) = ? [pid 5371] <... futex resumed>) = ? [pid 5371] +++ exited with 0 +++ [pid 5372] +++ exited with 0 +++ [pid 5370] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5370, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./97", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./97", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./97/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./97/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./97/binderfs") = 0 [ 78.628578][ T5371] loop0: detected capacity change from 0 to 256 [ 78.637314][ T5371] exfat: Deprecated parameter 'utf8' [ 78.649172][ T5371] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./97/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./97/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./97/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./97/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./97/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./97/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./97") = 0 mkdir("./98", 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=0x555556b3a6d0) = 5373 ./strace-static-x86_64: Process 5373 attached [pid 5373] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5373] chdir("./98") = 0 [pid 5373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5373] setpgid(0, 0) = 0 [pid 5373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5373] write(3, "1000", 4) = 4 [pid 5373] close(3) = 0 [pid 5373] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5373] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5373] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5373] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5373] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5374 attached [pid 5374] set_robust_list(0x7f265ea299e0, 24 [pid 5373] <... clone resumed>, parent_tid=[5374], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5374 [pid 5374] <... set_robust_list resumed>) = 0 [pid 5373] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5374] memfd_create("syzkaller", 0) = 3 [pid 5373] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5374] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5374] munmap(0x7f2656609000, 131072) = 0 [pid 5374] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5374] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5374] close(3) = 0 [pid 5374] mkdir("./file2", 0777) = 0 [pid 5374] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5374] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5374] chdir("./file2") = 0 [pid 5374] ioctl(4, LOOP_CLR_FD) = 0 [pid 5374] close(4) = 0 [pid 5374] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5373] <... futex resumed>) = 0 [pid 5373] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5373] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5374] <... futex resumed>) = 1 [pid 5374] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5374] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5373] <... futex resumed>) = 0 [pid 5373] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5373] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5374] <... futex resumed>) = 1 [pid 5374] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5374] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5373] <... futex resumed>) = 0 [pid 5373] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5373] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5374] <... futex resumed>) = 1 [pid 5374] write(4, "\x00\x00", 2) = 2 [pid 5374] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5373] <... futex resumed>) = 0 [pid 5373] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5373] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5373] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5373] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5373] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5375], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5375 [pid 5373] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5373] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5374] <... futex resumed>) = 1 [pid 5374] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0./strace-static-x86_64: Process 5375 attached [pid 5375] set_robust_list(0x7f26566289e0, 24 [pid 5374] <... mmap resumed>) = 0x20000000 [pid 5375] <... set_robust_list resumed>) = 0 [pid 5374] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5374] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5375] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5375] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5375] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5373] <... futex resumed>) = 0 [pid 5375] <... futex resumed>) = 1 [pid 5375] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5373] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5374] <... futex resumed>) = 0 [pid 5374] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5374] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5374] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5373] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5373] exit_group(0) = ? [pid 5374] <... futex resumed>) = ? [pid 5375] <... futex resumed>) = ? [pid 5374] +++ exited with 0 +++ [pid 5375] +++ exited with 0 +++ [pid 5373] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5373, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./98", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./98", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./98/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./98/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./98/binderfs") = 0 [ 78.759729][ T5374] loop0: detected capacity change from 0 to 256 [ 78.768918][ T5374] exfat: Deprecated parameter 'utf8' [ 78.779299][ T5374] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./98/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./98/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./98/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./98/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./98/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./98/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./98") = 0 mkdir("./99", 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=0x555556b3a6d0) = 5376 ./strace-static-x86_64: Process 5376 attached [pid 5376] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5376] chdir("./99") = 0 [pid 5376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5376] setpgid(0, 0) = 0 [pid 5376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5376] write(3, "1000", 4) = 4 [pid 5376] close(3) = 0 [pid 5376] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5376] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5376] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5376] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5376] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5377 attached , parent_tid=[5377], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5377 [pid 5377] set_robust_list(0x7f265ea299e0, 24 [pid 5376] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5377] <... set_robust_list resumed>) = 0 [pid 5376] <... futex resumed>) = 0 [pid 5376] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5377] memfd_create("syzkaller", 0) = 3 [pid 5377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5377] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5377] munmap(0x7f2656609000, 131072) = 0 [pid 5377] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5377] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5377] close(3) = 0 [pid 5377] mkdir("./file2", 0777) = 0 [pid 5377] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5377] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5377] chdir("./file2") = 0 [pid 5377] ioctl(4, LOOP_CLR_FD) = 0 [pid 5377] close(4) = 0 [pid 5377] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5376] <... futex resumed>) = 0 [pid 5376] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5376] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5377] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5377] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5376] <... futex resumed>) = 0 [pid 5376] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5376] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5377] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5377] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5376] <... futex resumed>) = 0 [pid 5376] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5376] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5377] write(4, "\x00\x00", 2) = 2 [pid 5377] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5376] <... futex resumed>) = 0 [pid 5376] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5376] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5376] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5377] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5376] <... mmap resumed>) = 0x7f2656608000 [pid 5376] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5377] <... mmap resumed>) = 0x20000000 [pid 5376] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5378], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5378 [pid 5376] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5376] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5377] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5378 attached [pid 5378] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5378] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5378] openat(AT_FDCWD, "", O_RDONLY [pid 5377] <... futex resumed>) = 0 [pid 5378] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5378] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5376] <... futex resumed>) = 0 [pid 5376] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5376] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5378] <... futex resumed>) = 1 [pid 5378] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5377] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5377] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5376] <... futex resumed>) = 0 [pid 5377] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5376] exit_group(0 [pid 5378] <... futex resumed>) = ? [pid 5377] <... futex resumed>) = ? [pid 5376] <... exit_group resumed>) = ? [pid 5378] +++ exited with 0 +++ [pid 5377] +++ exited with 0 +++ [pid 5376] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5376, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./99", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./99", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./99/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./99/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 78.874499][ T5377] loop0: detected capacity change from 0 to 256 [ 78.884963][ T5377] exfat: Deprecated parameter 'utf8' [ 78.895827][ T5377] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) unlink("./99/binderfs") = 0 umount2("./99/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./99/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./99/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./99/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./99/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./99/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./99") = 0 mkdir("./100", 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=0x555556b3a6d0) = 5379 ./strace-static-x86_64: Process 5379 attached [pid 5379] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5379] chdir("./100") = 0 [pid 5379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5379] setpgid(0, 0) = 0 [pid 5379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5379] write(3, "1000", 4) = 4 [pid 5379] close(3) = 0 [pid 5379] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5379] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5379] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5379] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5380], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5380 [pid 5379] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5379] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5380 attached [pid 5380] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5380] memfd_create("syzkaller", 0) = 3 [pid 5380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5380] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5380] munmap(0x7f2656609000, 131072) = 0 [pid 5380] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5380] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5380] close(3) = 0 [pid 5380] mkdir("./file2", 0777) = 0 [pid 5380] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5380] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5380] chdir("./file2") = 0 [pid 5380] ioctl(4, LOOP_CLR_FD) = 0 [pid 5380] close(4) = 0 [pid 5380] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5379] <... futex resumed>) = 0 [pid 5379] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5379] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5380] <... futex resumed>) = 1 [pid 5380] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5380] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5379] <... futex resumed>) = 0 [pid 5379] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5379] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5380] <... futex resumed>) = 1 [pid 5380] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5380] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5379] <... futex resumed>) = 0 [pid 5379] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5379] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5380] <... futex resumed>) = 1 [pid 5380] write(4, "\x00\x00", 2) = 2 [pid 5380] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5379] <... futex resumed>) = 0 [pid 5379] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5379] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5379] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5379] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5381], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5381 [pid 5379] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5379] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5380] <... futex resumed>) = 1 [pid 5380] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5380] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5380] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5381 attached [pid 5381] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5381] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5381] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5381] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5379] <... futex resumed>) = 0 [pid 5379] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5379] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5380] <... futex resumed>) = 0 [pid 5381] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5380] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5380] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5379] <... futex resumed>) = 0 [pid 5380] <... futex resumed>) = 1 [pid 5379] exit_group(0) = ? [pid 5381] <... futex resumed>) = ? [pid 5380] +++ exited with 0 +++ [pid 5381] +++ exited with 0 +++ [pid 5379] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5379, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./100", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./100", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./100/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./100/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./100/binderfs") = 0 [ 78.984864][ T5380] loop0: detected capacity change from 0 to 256 [ 78.995049][ T5380] exfat: Deprecated parameter 'utf8' [ 79.008801][ T5380] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./100/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./100/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./100/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./100/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./100/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./100/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./100") = 0 mkdir("./101", 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=0x555556b3a6d0) = 5382 ./strace-static-x86_64: Process 5382 attached [pid 5382] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5382] chdir("./101") = 0 [pid 5382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5382] setpgid(0, 0) = 0 [pid 5382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5382] write(3, "1000", 4) = 4 [pid 5382] close(3) = 0 [pid 5382] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5382] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5382] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5382] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5382] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5383 attached , parent_tid=[5383], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5383 [pid 5383] set_robust_list(0x7f265ea299e0, 24 [pid 5382] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5383] <... set_robust_list resumed>) = 0 [pid 5382] <... futex resumed>) = 0 [pid 5383] memfd_create("syzkaller", 0) = 3 [pid 5383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5382] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5383] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5383] munmap(0x7f2656609000, 131072) = 0 [pid 5383] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5383] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5383] close(3) = 0 [pid 5383] mkdir("./file2", 0777) = 0 [pid 5383] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5383] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5383] chdir("./file2") = 0 [pid 5383] ioctl(4, LOOP_CLR_FD) = 0 [pid 5383] close(4) = 0 [pid 5383] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5382] <... futex resumed>) = 0 [pid 5382] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5383] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5382] <... futex resumed>) = 0 [pid 5382] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5383] <... openat resumed>) = 4 [pid 5383] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5382] <... futex resumed>) = 0 [pid 5382] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5382] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5383] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5383] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5382] <... futex resumed>) = 0 [pid 5382] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5382] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5383] write(4, "\x00\x00", 2) = 2 [pid 5383] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5382] <... futex resumed>) = 0 [pid 5382] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5382] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5382] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5382] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5383] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5382] <... mprotect resumed>) = 0 [pid 5383] <... mmap resumed>) = 0x20000000 [pid 5382] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5383] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5384 attached ) = 0 [pid 5382] <... clone resumed>, parent_tid=[5384], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5384 [pid 5383] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5382] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5384] set_robust_list(0x7f26566289e0, 24 [pid 5382] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5384] <... set_robust_list resumed>) = 0 [pid 5384] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5384] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5384] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5382] <... futex resumed>) = 0 [pid 5384] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5382] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5382] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5383] <... futex resumed>) = 0 [pid 5383] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5383] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5382] <... futex resumed>) = 0 [pid 5383] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5382] exit_group(0 [pid 5383] <... futex resumed>) = ? [pid 5382] <... exit_group resumed>) = ? [pid 5383] +++ exited with 0 +++ [pid 5384] <... futex resumed>) = ? [ 79.104093][ T5383] loop0: detected capacity change from 0 to 256 [ 79.115349][ T5383] exfat: Deprecated parameter 'utf8' [ 79.126371][ T5383] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5384] +++ exited with 0 +++ [pid 5382] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5382, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./101", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./101", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./101/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./101/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./101/binderfs") = 0 umount2("./101/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./101/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./101/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./101/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./101/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./101/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./101") = 0 mkdir("./102", 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=0x555556b3a6d0) = 5385 ./strace-static-x86_64: Process 5385 attached [pid 5385] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5385] chdir("./102") = 0 [pid 5385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5385] setpgid(0, 0) = 0 [pid 5385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5385] write(3, "1000", 4) = 4 [pid 5385] close(3) = 0 [pid 5385] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5385] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5385] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5385] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5385] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5386], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5386 [pid 5385] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5385] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5386 attached [pid 5386] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5386] memfd_create("syzkaller", 0) = 3 [pid 5386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5386] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5386] munmap(0x7f2656609000, 131072) = 0 [pid 5386] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5386] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5386] close(3) = 0 [pid 5386] mkdir("./file2", 0777) = 0 [pid 5386] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5386] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5386] chdir("./file2") = 0 [pid 5386] ioctl(4, LOOP_CLR_FD) = 0 [pid 5386] close(4) = 0 [pid 5386] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5385] <... futex resumed>) = 0 [pid 5385] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5385] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5386] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5386] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5385] <... futex resumed>) = 0 [pid 5385] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5385] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5386] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5386] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5385] <... futex resumed>) = 0 [pid 5385] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5385] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5386] write(4, "\x00\x00", 2) = 2 [pid 5386] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5385] <... futex resumed>) = 0 [pid 5386] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5385] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5386] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5385] <... futex resumed>) = 0 [pid 5385] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5385] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5386] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5385] <... mmap resumed>) = 0x7f2656608000 [pid 5386] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5385] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5386] <... futex resumed>) = 0 [pid 5386] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5385] <... mprotect resumed>) = 0 [pid 5385] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5387], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5387 ./strace-static-x86_64: Process 5387 attached [pid 5385] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5387] set_robust_list(0x7f26566289e0, 24 [pid 5385] <... futex resumed>) = 0 [pid 5387] <... set_robust_list resumed>) = 0 [pid 5385] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5387] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5387] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5387] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5385] <... futex resumed>) = 0 [pid 5387] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5385] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5386] <... futex resumed>) = 0 [pid 5385] <... futex resumed>) = 1 [pid 5386] getdents64(-1, [pid 5385] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5386] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5386] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5385] <... futex resumed>) = 0 [pid 5386] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5385] exit_group(0 [pid 5386] <... futex resumed>) = ? [pid 5385] <... exit_group resumed>) = ? [pid 5386] +++ exited with 0 +++ [pid 5387] <... futex resumed>) = ? [pid 5387] +++ exited with 0 +++ [pid 5385] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5385, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./102", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./102", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./102/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./102/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./102/binderfs") = 0 [ 79.248929][ T5386] loop0: detected capacity change from 0 to 256 [ 79.258203][ T5386] exfat: Deprecated parameter 'utf8' [ 79.269634][ T5386] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./102/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./102/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./102/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./102/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./102/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./102/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./102") = 0 mkdir("./103", 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=0x555556b3a6d0) = 5388 ./strace-static-x86_64: Process 5388 attached [pid 5388] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5388] chdir("./103") = 0 [pid 5388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5388] setpgid(0, 0) = 0 [pid 5388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5388] write(3, "1000", 4) = 4 [pid 5388] close(3) = 0 [pid 5388] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5388] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5388] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5388] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5388] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5389 attached [pid 5389] set_robust_list(0x7f265ea299e0, 24 [pid 5388] <... clone resumed>, parent_tid=[5389], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5389 [pid 5389] <... set_robust_list resumed>) = 0 [pid 5388] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5389] memfd_create("syzkaller", 0 [pid 5388] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5389] <... memfd_create resumed>) = 3 [pid 5389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5389] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5389] munmap(0x7f2656609000, 131072) = 0 [pid 5389] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5389] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5389] close(3) = 0 [pid 5389] mkdir("./file2", 0777) = 0 [pid 5389] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5389] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5389] chdir("./file2") = 0 [pid 5389] ioctl(4, LOOP_CLR_FD) = 0 [pid 5389] close(4) = 0 [pid 5389] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5388] <... futex resumed>) = 0 [pid 5388] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5388] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5389] <... futex resumed>) = 1 [pid 5389] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5389] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5388] <... futex resumed>) = 0 [pid 5388] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5388] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5389] <... futex resumed>) = 1 [pid 5389] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5389] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5388] <... futex resumed>) = 0 [pid 5388] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5388] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5389] <... futex resumed>) = 1 [pid 5389] write(4, "\x00\x00", 2) = 2 [pid 5389] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5388] <... futex resumed>) = 0 [pid 5388] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5388] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5388] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5388] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5388] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5390], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5390 [pid 5388] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5388] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5389] <... futex resumed>) = 1 [pid 5389] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5389] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5389] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5390 attached [pid 5390] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5390] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5390] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5390] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5388] <... futex resumed>) = 0 [pid 5388] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5389] <... futex resumed>) = 0 [pid 5388] <... futex resumed>) = 1 [pid 5389] getdents64(-1, [pid 5388] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5389] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5389] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5388] <... futex resumed>) = 0 [pid 5389] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5388] exit_group(0 [pid 5389] <... futex resumed>) = ? [pid 5388] <... exit_group resumed>) = ? [pid 5389] +++ exited with 0 +++ [pid 5390] +++ exited with 0 +++ [pid 5388] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5388, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./103", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./103", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./103/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./103/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./103/binderfs") = 0 umount2("./103/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./103/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./103/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./103/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./103/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./103/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./103") = 0 mkdir("./104", 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=0x555556b3a6d0) = 5391 ./strace-static-x86_64: Process 5391 attached [pid 5391] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5391] chdir("./104") = 0 [pid 5391] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5391] setpgid(0, 0) = 0 [ 79.382526][ T5389] loop0: detected capacity change from 0 to 256 [ 79.392635][ T5389] exfat: Deprecated parameter 'utf8' [ 79.402874][ T5389] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5391] write(3, "1000", 4) = 4 [pid 5391] close(3) = 0 [pid 5391] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5391] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5391] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5391] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5391] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5392], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5392 [pid 5391] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5391] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5392 attached [pid 5392] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5392] memfd_create("syzkaller", 0) = 3 [pid 5392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5392] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5392] munmap(0x7f2656609000, 131072) = 0 [pid 5392] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5392] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5392] close(3) = 0 [pid 5392] mkdir("./file2", 0777) = 0 [pid 5392] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5392] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5392] chdir("./file2") = 0 [pid 5392] ioctl(4, LOOP_CLR_FD) = 0 [pid 5392] close(4) = 0 [pid 5392] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5391] <... futex resumed>) = 0 [pid 5391] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5391] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5392] <... futex resumed>) = 1 [pid 5392] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5392] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5391] <... futex resumed>) = 0 [pid 5391] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5391] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5392] <... futex resumed>) = 1 [pid 5392] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5392] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5391] <... futex resumed>) = 0 [pid 5391] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5391] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5392] <... futex resumed>) = 1 [pid 5392] write(4, "\x00\x00", 2) = 2 [pid 5392] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5391] <... futex resumed>) = 0 [pid 5391] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5391] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5391] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5391] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5391] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5393 attached , parent_tid=[5393], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5393 [pid 5391] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5391] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5393] set_robust_list(0x7f26566289e0, 24 [pid 5392] <... futex resumed>) = 1 [pid 5392] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5393] <... set_robust_list resumed>) = 0 [pid 5392] <... mmap resumed>) = 0x20000000 [pid 5392] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5392] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5393] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5393] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5393] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5391] <... futex resumed>) = 0 [pid 5391] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5392] <... futex resumed>) = 0 [pid 5391] <... futex resumed>) = 1 [pid 5392] getdents64(-1, [pid 5391] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5392] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5392] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5391] <... futex resumed>) = 0 [pid 5393] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5392] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5391] exit_group(0 [pid 5392] <... futex resumed>) = ? [pid 5391] <... exit_group resumed>) = ? [pid 5392] +++ exited with 0 +++ [pid 5393] <... futex resumed>) = ? [pid 5393] +++ exited with 0 +++ [pid 5391] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5391, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./104", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./104", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./104/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./104/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./104/binderfs") = 0 [ 79.479291][ T5392] loop0: detected capacity change from 0 to 256 [ 79.488377][ T5392] exfat: Deprecated parameter 'utf8' [ 79.502632][ T5392] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./104/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./104/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./104/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./104/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./104/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./104/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./104") = 0 mkdir("./105", 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=0x555556b3a6d0) = 5394 ./strace-static-x86_64: Process 5394 attached [pid 5394] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5394] chdir("./105") = 0 [pid 5394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5394] setpgid(0, 0) = 0 [pid 5394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5394] write(3, "1000", 4) = 4 [pid 5394] close(3) = 0 [pid 5394] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5394] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5394] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5394] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5394] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5395 attached , parent_tid=[5395], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5395 [pid 5395] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5395] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5394] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5395] <... futex resumed>) = 0 [pid 5394] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5395] memfd_create("syzkaller", 0) = 3 [pid 5395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5395] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5395] munmap(0x7f2656609000, 131072) = 0 [pid 5395] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5395] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5395] close(3) = 0 [pid 5395] mkdir("./file2", 0777) = 0 [pid 5395] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5395] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5395] chdir("./file2") = 0 [pid 5395] ioctl(4, LOOP_CLR_FD) = 0 [pid 5395] close(4) = 0 [pid 5395] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5394] <... futex resumed>) = 0 [pid 5394] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5395] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5394] <... futex resumed>) = 0 [pid 5394] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5395] <... openat resumed>) = 4 [pid 5395] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5394] <... futex resumed>) = 0 [pid 5395] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5394] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5394] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5395] <... openat resumed>) = 5 [pid 5395] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5394] <... futex resumed>) = 0 [pid 5395] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5394] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5395] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5394] <... futex resumed>) = 0 [pid 5395] write(4, "\x00\x00", 2 [pid 5394] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5395] <... write resumed>) = 2 [pid 5395] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5395] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5394] <... futex resumed>) = 0 [pid 5394] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5395] <... futex resumed>) = 0 [pid 5394] <... futex resumed>) = 1 [pid 5395] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5394] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5395] <... mmap resumed>) = 0x20000000 [pid 5394] <... futex resumed>) = 0 [pid 5395] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5394] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5395] <... futex resumed>) = 0 [pid 5394] <... mmap resumed>) = 0x7f2656608000 [pid 5395] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5394] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5394] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5396], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5396 ./strace-static-x86_64: Process 5396 attached [pid 5394] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5394] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5396] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5396] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5396] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5396] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5394] <... futex resumed>) = 0 [pid 5396] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5394] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5395] <... futex resumed>) = 0 [pid 5394] <... futex resumed>) = 1 [pid 5395] getdents64(-1, [pid 5394] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5395] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5395] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5394] <... futex resumed>) = 0 [pid 5395] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5394] exit_group(0 [pid 5396] <... futex resumed>) = ? [pid 5395] <... futex resumed>) = ? [pid 5394] <... exit_group resumed>) = ? [pid 5396] +++ exited with 0 +++ [pid 5395] +++ exited with 0 +++ [pid 5394] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5394, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 79.612828][ T5395] loop0: detected capacity change from 0 to 256 [ 79.631863][ T5395] exfat: Deprecated parameter 'utf8' [ 79.642040][ T5395] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./105", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./105", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./105/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./105/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./105/binderfs") = 0 umount2("./105/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./105/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./105/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./105/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./105/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./105/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./105") = 0 mkdir("./106", 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=0x555556b3a6d0) = 5397 ./strace-static-x86_64: Process 5397 attached [pid 5397] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5397] chdir("./106") = 0 [pid 5397] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5397] setpgid(0, 0) = 0 [pid 5397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5397] write(3, "1000", 4) = 4 [pid 5397] close(3) = 0 [pid 5397] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5397] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5397] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5397] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5397] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5398 attached , parent_tid=[5398], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5398 [pid 5398] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5398] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5397] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5398] <... futex resumed>) = 0 [pid 5397] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5398] memfd_create("syzkaller", 0) = 3 [pid 5398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5398] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5398] munmap(0x7f2656609000, 131072) = 0 [pid 5398] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5398] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5398] close(3) = 0 [pid 5398] mkdir("./file2", 0777) = 0 [pid 5398] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5398] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5398] chdir("./file2") = 0 [pid 5398] ioctl(4, LOOP_CLR_FD) = 0 [pid 5398] close(4) = 0 [pid 5398] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5397] <... futex resumed>) = 0 [pid 5398] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5397] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5398] <... futex resumed>) = 0 [pid 5398] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5397] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5398] <... openat resumed>) = 4 [pid 5398] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5397] <... futex resumed>) = 0 [pid 5398] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5397] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5397] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5398] <... openat resumed>) = 5 [pid 5398] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5397] <... futex resumed>) = 0 [pid 5398] write(4, "\x00\x00", 2 [pid 5397] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5397] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5398] <... write resumed>) = 2 [pid 5398] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5397] <... futex resumed>) = 0 [pid 5398] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5397] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5397] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5397] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5398] <... mmap resumed>) = 0x20000000 [pid 5398] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5397] <... mmap resumed>) = 0x7f2656608000 [pid 5397] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5398] <... futex resumed>) = 0 [pid 5397] <... mprotect resumed>) = 0 [pid 5398] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5397] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5399 attached , parent_tid=[5399], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5399 [pid 5399] set_robust_list(0x7f26566289e0, 24 [pid 5397] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5397] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5399] <... set_robust_list resumed>) = 0 [pid 5399] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5399] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5399] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5397] <... futex resumed>) = 0 [pid 5397] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5398] <... futex resumed>) = 0 [pid 5397] <... futex resumed>) = 1 [pid 5398] getdents64(-1, [pid 5397] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5398] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5399] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5398] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5397] <... futex resumed>) = 0 [pid 5398] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5397] exit_group(0 [pid 5398] <... futex resumed>) = ? [pid 5397] <... exit_group resumed>) = ? [pid 5398] +++ exited with 0 +++ [pid 5399] <... futex resumed>) = ? [pid 5399] +++ exited with 0 +++ [pid 5397] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5397, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./106", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./106", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./106/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./106/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./106/binderfs") = 0 umount2("./106/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./106/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./106/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./106/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./106/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./106/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./106") = 0 mkdir("./107", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 79.754182][ T5398] loop0: detected capacity change from 0 to 256 [ 79.762866][ T5398] exfat: Deprecated parameter 'utf8' [ 79.774086][ T5398] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b3a6d0) = 5400 ./strace-static-x86_64: Process 5400 attached [pid 5400] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5400] chdir("./107") = 0 [pid 5400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5400] setpgid(0, 0) = 0 [pid 5400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5400] write(3, "1000", 4) = 4 [pid 5400] close(3) = 0 [pid 5400] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5400] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5400] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5400] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5400] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5401], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5401 ./strace-static-x86_64: Process 5401 attached [pid 5401] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5401] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5400] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5401] <... futex resumed>) = 0 [pid 5400] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5401] memfd_create("syzkaller", 0) = 3 [pid 5401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5401] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5401] munmap(0x7f2656609000, 131072) = 0 [pid 5401] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5401] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5401] close(3) = 0 [pid 5401] mkdir("./file2", 0777) = 0 [pid 5401] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5401] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5401] chdir("./file2") = 0 [pid 5401] ioctl(4, LOOP_CLR_FD) = 0 [pid 5401] close(4) = 0 [pid 5401] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5400] <... futex resumed>) = 0 [pid 5400] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5400] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5401] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5401] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5400] <... futex resumed>) = 0 [pid 5400] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5400] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5401] <... futex resumed>) = 1 [pid 5401] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5401] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5400] <... futex resumed>) = 0 [pid 5400] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5400] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5401] <... futex resumed>) = 1 [pid 5401] write(4, "\x00\x00", 2) = 2 [pid 5401] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5400] <... futex resumed>) = 0 [pid 5401] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5400] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5400] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5400] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5400] <... mmap resumed>) = 0x7f2656608000 [pid 5400] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5401] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5400] <... mprotect resumed>) = 0 [pid 5400] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5402], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5402 ./strace-static-x86_64: Process 5402 attached [pid 5401] <... mmap resumed>) = 0x20000000 [pid 5400] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5400] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5401] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5401] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5402] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5402] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5402] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5402] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5400] <... futex resumed>) = 0 [pid 5400] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5401] <... futex resumed>) = 0 [pid 5400] <... futex resumed>) = 1 [pid 5400] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5401] getdents64(-1, [pid 5402] <... futex resumed>) = 1 [pid 5401] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5402] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5401] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5401] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5400] <... futex resumed>) = 0 [pid 5400] exit_group(0) = ? [pid 5401] <... futex resumed>) = ? [pid 5402] <... futex resumed>) = ? [pid 5402] +++ exited with 0 +++ [pid 5401] +++ exited with 0 +++ [pid 5400] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5400, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./107", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./107", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./107/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./107/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./107/binderfs") = 0 umount2("./107/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./107/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./107/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./107/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./107/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 [ 79.870543][ T5401] loop0: detected capacity change from 0 to 256 [ 79.879126][ T5401] exfat: Deprecated parameter 'utf8' [ 79.889316][ T5401] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) rmdir("./107/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./107") = 0 mkdir("./108", 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=0x555556b3a6d0) = 5403 ./strace-static-x86_64: Process 5403 attached [pid 5403] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5403] chdir("./108") = 0 [pid 5403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5403] setpgid(0, 0) = 0 [pid 5403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5403] write(3, "1000", 4) = 4 [pid 5403] close(3) = 0 [pid 5403] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5403] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5403] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5403] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5403] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5404 attached [pid 5404] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5403] <... clone resumed>, parent_tid=[5404], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5404 [pid 5403] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5403] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5404] memfd_create("syzkaller", 0) = 3 [pid 5404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5404] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5404] munmap(0x7f2656609000, 131072) = 0 [pid 5404] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5404] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5404] close(3) = 0 [pid 5404] mkdir("./file2", 0777) = 0 [pid 5404] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5404] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5404] chdir("./file2") = 0 [pid 5404] ioctl(4, LOOP_CLR_FD) = 0 [pid 5404] close(4) = 0 [pid 5404] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5403] <... futex resumed>) = 0 [pid 5403] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5403] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5404] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5404] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5403] <... futex resumed>) = 0 [pid 5403] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5403] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5404] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5404] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5403] <... futex resumed>) = 0 [pid 5403] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5403] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5404] write(4, "\x00\x00", 2) = 2 [pid 5404] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5403] <... futex resumed>) = 0 [pid 5403] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5403] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5403] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5404] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5403] <... mmap resumed>) = 0x7f2656608000 [pid 5403] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5404] <... mmap resumed>) = 0x20000000 [pid 5403] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5404] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5403] <... clone resumed>, parent_tid=[5405], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5405 [pid 5403] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5403] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5405 attached [pid 5405] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5405] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5405] openat(AT_FDCWD, "", O_RDONLY [pid 5404] <... futex resumed>) = 0 [pid 5404] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5405] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5405] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5403] <... futex resumed>) = 0 [pid 5403] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5404] <... futex resumed>) = 0 [pid 5403] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5405] <... futex resumed>) = 1 [pid 5404] getdents64(-1, [pid 5405] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5404] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5404] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5403] <... futex resumed>) = 0 [pid 5404] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5403] exit_group(0) = ? [pid 5404] <... futex resumed>) = ? [pid 5405] <... futex resumed>) = ? [pid 5404] +++ exited with 0 +++ [pid 5405] +++ exited with 0 +++ [pid 5403] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5403, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./108", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./108", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./108/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./108/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./108/binderfs") = 0 [ 79.975517][ T5404] loop0: detected capacity change from 0 to 256 [ 79.985581][ T5404] exfat: Deprecated parameter 'utf8' [ 79.996543][ T5404] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./108/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./108/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./108/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./108/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./108/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./108/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./108") = 0 mkdir("./109", 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=0x555556b3a6d0) = 5406 ./strace-static-x86_64: Process 5406 attached [pid 5406] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5406] chdir("./109") = 0 [pid 5406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5406] setpgid(0, 0) = 0 [pid 5406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5406] write(3, "1000", 4) = 4 [pid 5406] close(3) = 0 [pid 5406] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5406] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5406] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5406] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5407], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5407 [pid 5406] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5407 attached [pid 5407] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5407] memfd_create("syzkaller", 0) = 3 [pid 5407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5407] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5407] munmap(0x7f2656609000, 131072) = 0 [pid 5407] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5407] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5407] close(3) = 0 [pid 5407] mkdir("./file2", 0777) = 0 [pid 5407] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5407] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5407] chdir("./file2") = 0 [pid 5407] ioctl(4, LOOP_CLR_FD) = 0 [pid 5407] close(4) = 0 [pid 5407] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5406] <... futex resumed>) = 0 [pid 5406] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5407] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5407] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5406] <... futex resumed>) = 0 [pid 5406] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5407] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5407] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5406] <... futex resumed>) = 0 [pid 5406] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5407] write(4, "\x00\x00", 2) = 2 [pid 5407] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5406] <... futex resumed>) = 0 [pid 5406] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5407] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5406] <... mmap resumed>) = 0x7f2656608000 [pid 5406] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5407] <... mmap resumed>) = 0x20000000 [pid 5406] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5407] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5406] <... clone resumed>, parent_tid=[5408], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5408 [pid 5406] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5408 attached [pid 5408] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5408] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5407] <... futex resumed>) = 0 [pid 5408] openat(AT_FDCWD, "", O_RDONLY [pid 5407] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5408] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5408] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5406] <... futex resumed>) = 0 [pid 5406] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5408] <... futex resumed>) = 1 [pid 5408] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5407] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5407] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5407] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5406] <... futex resumed>) = 0 [pid 5407] <... futex resumed>) = 1 [pid 5406] exit_group(0) = ? [pid 5408] <... futex resumed>) = ? [pid 5408] +++ exited with 0 +++ [pid 5407] +++ exited with 0 +++ [pid 5406] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5406, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./109", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./109", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./109/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./109/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./109/binderfs") = 0 umount2("./109/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 80.094803][ T5407] loop0: detected capacity change from 0 to 256 [ 80.103862][ T5407] exfat: Deprecated parameter 'utf8' [ 80.114584][ T5407] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./109/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./109/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./109/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./109/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./109/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./109") = 0 mkdir("./110", 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=0x555556b3a6d0) = 5409 ./strace-static-x86_64: Process 5409 attached [pid 5409] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5409] chdir("./110") = 0 [pid 5409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5409] setpgid(0, 0) = 0 [pid 5409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5409] write(3, "1000", 4) = 4 [pid 5409] close(3) = 0 [pid 5409] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5409] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5409] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5409] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5409] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5410 attached , parent_tid=[5410], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5410 [pid 5410] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5410] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5409] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5410] <... futex resumed>) = 0 [pid 5410] memfd_create("syzkaller", 0) = 3 [pid 5410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5409] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5410] <... mmap resumed>) = 0x7f2656609000 [pid 5410] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5410] munmap(0x7f2656609000, 131072) = 0 [pid 5410] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5410] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5410] close(3) = 0 [pid 5410] mkdir("./file2", 0777) = 0 [pid 5410] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5410] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5410] chdir("./file2") = 0 [pid 5410] ioctl(4, LOOP_CLR_FD) = 0 [pid 5410] close(4) = 0 [pid 5410] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5410] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5409] <... futex resumed>) = 0 [pid 5409] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5410] <... futex resumed>) = 0 [pid 5410] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5409] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5410] <... openat resumed>) = 4 [pid 5410] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5409] <... futex resumed>) = 0 [pid 5410] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5409] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5409] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5410] <... openat resumed>) = 5 [pid 5410] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5409] <... futex resumed>) = 0 [pid 5410] <... futex resumed>) = 1 [pid 5410] write(4, "\x00\x00", 2 [pid 5409] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5409] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5410] <... write resumed>) = 2 [pid 5410] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5409] <... futex resumed>) = 0 [pid 5409] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5409] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5409] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5409] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5409] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5411 attached , parent_tid=[5411], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5411 [pid 5409] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5409] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5411] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5411] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5410] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5411] <... openat resumed>) = 6 [pid 5410] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5411] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5409] <... futex resumed>) = 0 [pid 5409] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5409] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5411] <... futex resumed>) = 1 [pid 5411] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5410] <... futex resumed>) = 1 [pid 5409] <... futex resumed>) = 0 [pid 5409] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} [pid 5410] getdents64(6, NULL, 32776) = -1 EFAULT (Bad address) [pid 5410] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5409] <... futex resumed>) = 0 [pid 5409] exit_group(0 [pid 5411] <... futex resumed>) = ? [pid 5409] <... exit_group resumed>) = ? [pid 5411] +++ exited with 0 +++ [pid 5410] +++ exited with 0 +++ [pid 5409] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5409, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./110/binderfs") = 0 [ 80.224782][ T5410] loop0: detected capacity change from 0 to 256 [ 80.233540][ T5410] exfat: Deprecated parameter 'utf8' [ 80.244804][ T5410] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./110/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./110/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./110/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./110/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./110/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./110/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./110") = 0 mkdir("./111", 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 5412 attached , child_tidptr=0x555556b3a6d0) = 5412 [pid 5412] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5412] chdir("./111") = 0 [pid 5412] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5412] setpgid(0, 0) = 0 [pid 5412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5412] write(3, "1000", 4) = 4 [pid 5412] close(3) = 0 [pid 5412] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5412] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5412] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5412] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5412] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5413 attached , parent_tid=[5413], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5413 [pid 5412] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5412] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5413] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5413] memfd_create("syzkaller", 0) = 3 [pid 5413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5413] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5413] munmap(0x7f2656609000, 131072) = 0 [pid 5413] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5413] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5413] close(3) = 0 [pid 5413] mkdir("./file2", 0777) = 0 [pid 5413] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5413] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5413] chdir("./file2") = 0 [pid 5413] ioctl(4, LOOP_CLR_FD) = 0 [pid 5413] close(4) = 0 [pid 5413] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5413] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5412] <... futex resumed>) = 0 [pid 5412] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5413] <... futex resumed>) = 0 [pid 5413] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5412] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5413] <... openat resumed>) = 4 [pid 5413] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5412] <... futex resumed>) = 0 [pid 5412] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5412] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5413] <... futex resumed>) = 1 [pid 5413] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5413] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5412] <... futex resumed>) = 0 [pid 5412] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5413] write(4, "\x00\x00", 2 [pid 5412] <... futex resumed>) = 0 [pid 5412] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5413] <... write resumed>) = 2 [pid 5413] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5412] <... futex resumed>) = 0 [pid 5413] <... futex resumed>) = 1 [pid 5413] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5412] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5412] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5412] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5413] <... mmap resumed>) = 0x20000000 [pid 5412] <... mmap resumed>) = 0x7f2656608000 [pid 5412] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5413] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5412] <... mprotect resumed>) = 0 [pid 5412] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5413] <... futex resumed>) = 0 [pid 5412] <... clone resumed>, parent_tid=[5414], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5414 [pid 5412] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5412] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5414 attached [pid 5414] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5414] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5414] openat(AT_FDCWD, "", O_RDONLY [pid 5413] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5414] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 5414] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5412] <... futex resumed>) = 0 [pid 5412] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 80.359371][ T5413] loop0: detected capacity change from 0 to 256 [ 80.369504][ T5413] exfat: Deprecated parameter 'utf8' [ 80.380414][ T5413] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) [pid 5412] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5414] <... futex resumed>) = 1 [pid 5414] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5413] <... futex resumed>) = 0 [pid 5413] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5413] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5412] <... futex resumed>) = 0 [pid 5413] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5412] exit_group(0) = ? [pid 5414] <... futex resumed>) = ? [pid 5413] <... futex resumed>) = ? [pid 5414] +++ exited with 0 +++ [pid 5413] +++ exited with 0 +++ [pid 5412] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5412, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./111/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./111/binderfs") = 0 umount2("./111/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./111/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./111/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./111/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./111/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./111/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./111") = 0 mkdir("./112", 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=0x555556b3a6d0) = 5415 ./strace-static-x86_64: Process 5415 attached [pid 5415] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5415] chdir("./112") = 0 [pid 5415] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5415] setpgid(0, 0) = 0 [pid 5415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5415] write(3, "1000", 4) = 4 [pid 5415] close(3) = 0 [pid 5415] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5415] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5415] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5415] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5415] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5416], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5416 [pid 5415] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5415] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5416 attached [pid 5416] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5416] memfd_create("syzkaller", 0) = 3 [pid 5416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5416] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5416] munmap(0x7f2656609000, 131072) = 0 [pid 5416] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5416] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5416] close(3) = 0 [pid 5416] mkdir("./file2", 0777) = 0 [ 80.479322][ T5416] loop0: detected capacity change from 0 to 256 [ 80.485651][ T5080] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 80.485748][ T5080] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 80.485909][ T5080] Buffer I/O error on dev loop0, logical block 0, async page read [ 80.499159][ T5416] exfat: Deprecated parameter 'utf8' [pid 5416] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5416] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5416] chdir("./file2") = 0 [pid 5416] ioctl(4, LOOP_CLR_FD) = 0 [pid 5416] close(4) = 0 [pid 5416] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5416] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5415] <... futex resumed>) = 0 [pid 5415] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5416] <... futex resumed>) = 0 [pid 5416] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5415] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5416] <... openat resumed>) = 4 [pid 5416] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5415] <... futex resumed>) = 0 [pid 5416] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5415] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5415] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5416] <... openat resumed>) = 5 [pid 5416] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5415] <... futex resumed>) = 0 [pid 5416] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5415] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5415] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5416] <... futex resumed>) = 0 [pid 5416] write(4, "\x00\x00", 2) = 2 [pid 5416] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5415] <... futex resumed>) = 0 [pid 5416] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5415] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5415] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5415] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5416] <... mmap resumed>) = 0x20000000 [pid 5416] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5415] <... mmap resumed>) = 0x7f2656608000 [pid 5416] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5415] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5415] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5417 attached , parent_tid=[5417], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5417 [pid 5417] set_robust_list(0x7f26566289e0, 24 [pid 5415] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5417] <... set_robust_list resumed>) = 0 [pid 5415] <... futex resumed>) = 0 [pid 5415] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5417] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5417] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5417] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5415] <... futex resumed>) = 0 [pid 5417] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5415] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5416] <... futex resumed>) = 0 [pid 5415] <... futex resumed>) = 1 [pid 5416] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5415] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5416] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5416] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5415] exit_group(0) = ? [pid 5416] <... futex resumed>) = ? [pid 5417] <... futex resumed>) = ? [pid 5417] +++ exited with 0 +++ [pid 5416] +++ exited with 0 +++ [pid 5415] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5415, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 80.522763][ T5416] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) lstat("./112/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./112/binderfs") = 0 umount2("./112/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./112/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./112/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./112/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./112/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./112/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./112") = 0 mkdir("./113", 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=0x555556b3a6d0) = 5418 ./strace-static-x86_64: Process 5418 attached [pid 5418] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5418] chdir("./113") = 0 [pid 5418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5418] setpgid(0, 0) = 0 [pid 5418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5418] write(3, "1000", 4) = 4 [pid 5418] close(3) = 0 [pid 5418] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5418] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5418] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5418] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5418] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5419 attached , parent_tid=[5419], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5419 [pid 5419] set_robust_list(0x7f265ea299e0, 24 [pid 5418] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5419] <... set_robust_list resumed>) = 0 [pid 5418] <... futex resumed>) = 0 [pid 5418] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5419] memfd_create("syzkaller", 0) = 3 [pid 5419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5419] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5419] munmap(0x7f2656609000, 131072) = 0 [pid 5419] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5419] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5419] close(3) = 0 [pid 5419] mkdir("./file2", 0777) = 0 [pid 5419] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5419] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5419] chdir("./file2") = 0 [pid 5419] ioctl(4, LOOP_CLR_FD) = 0 [pid 5419] close(4) = 0 [pid 5419] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5419] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5418] <... futex resumed>) = 0 [pid 5418] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5419] <... futex resumed>) = 0 [pid 5418] <... futex resumed>) = 1 [pid 5419] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5418] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5419] <... openat resumed>) = 4 [pid 5419] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5419] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5418] <... futex resumed>) = 0 [pid 5418] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5419] <... futex resumed>) = 0 [pid 5418] <... futex resumed>) = 1 [pid 5419] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5418] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5419] <... openat resumed>) = 5 [pid 5419] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5418] <... futex resumed>) = 0 [pid 5419] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5418] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5418] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5419] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5419] write(4, "\x00\x00", 2) = 2 [pid 5419] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5418] <... futex resumed>) = 0 [pid 5418] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5418] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5418] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5418] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5418] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5420], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5420 [pid 5418] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5418] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5420 attached [pid 5420] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5420] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5419] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5419] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5420] <... openat resumed>) = 6 [pid 5420] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5418] <... futex resumed>) = 0 [pid 5418] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5418] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5420] <... futex resumed>) = 1 [pid 5420] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5419] <... futex resumed>) = 1 [pid 5418] <... futex resumed>) = 0 [pid 5418] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} [pid 5419] getdents64(6, NULL, 32776) = -1 EFAULT (Bad address) [pid 5419] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5418] <... futex resumed>) = 0 [pid 5418] exit_group(0) = ? [pid 5420] <... futex resumed>) = ? [pid 5420] +++ exited with 0 +++ [pid 5419] +++ exited with 0 +++ [pid 5418] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5418, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./113/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./113/binderfs") = 0 [ 80.612756][ T5419] loop0: detected capacity change from 0 to 256 [ 80.622940][ T5419] exfat: Deprecated parameter 'utf8' [ 80.632598][ T5419] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./113/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./113/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./113/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./113/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./113/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./113/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./113") = 0 mkdir("./114", 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=0x555556b3a6d0) = 5421 ./strace-static-x86_64: Process 5421 attached [pid 5421] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5421] chdir("./114") = 0 [pid 5421] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5421] setpgid(0, 0) = 0 [pid 5421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5421] write(3, "1000", 4) = 4 [pid 5421] close(3) = 0 [pid 5421] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5421] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5421] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5421] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5421] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5422 attached , parent_tid=[5422], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5422 [pid 5421] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5421] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5422] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5422] memfd_create("syzkaller", 0) = 3 [pid 5422] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5422] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5422] munmap(0x7f2656609000, 131072) = 0 [pid 5422] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5422] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5422] close(3) = 0 [pid 5422] mkdir("./file2", 0777) = 0 [pid 5422] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5422] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5422] chdir("./file2") = 0 [pid 5422] ioctl(4, LOOP_CLR_FD) = 0 [pid 5422] close(4) = 0 [pid 5422] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5421] <... futex resumed>) = 0 [pid 5421] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5421] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5422] <... futex resumed>) = 1 [pid 5422] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5422] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5421] <... futex resumed>) = 0 [pid 5421] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5421] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5422] <... futex resumed>) = 1 [pid 5422] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5422] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5421] <... futex resumed>) = 0 [pid 5421] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5421] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5422] <... futex resumed>) = 1 [pid 5422] write(4, "\x00\x00", 2) = 2 [pid 5422] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5421] <... futex resumed>) = 0 [pid 5421] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5421] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5421] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5421] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5421] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5423 attached , parent_tid=[5423], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5423 [pid 5423] set_robust_list(0x7f26566289e0, 24 [pid 5421] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5423] <... set_robust_list resumed>) = 0 [pid 5421] <... futex resumed>) = 0 [pid 5423] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5421] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5422] <... futex resumed>) = 1 [pid 5422] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5423] <... openat resumed>) = 6 [pid 5422] <... mmap resumed>) = 0x20000000 [pid 5423] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5421] <... futex resumed>) = 0 [pid 5421] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5423] getdents64(6, [pid 5421] <... futex resumed>) = 0 [pid 5423] <... getdents64 resumed>NULL, 32776) = -1 EFAULT (Bad address) [pid 5421] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5423] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5423] <... futex resumed>) = 0 [pid 5423] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5422] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5422] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5421] exit_group(0 [pid 5423] <... futex resumed>) = ? [pid 5422] <... futex resumed>) = ? [pid 5421] <... exit_group resumed>) = ? [pid 5423] +++ exited with 0 +++ [pid 5422] +++ exited with 0 +++ [pid 5421] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5421, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./114/binderfs") = 0 umount2("./114/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./114/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./114/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./114/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./114/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./114/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./114") = 0 mkdir("./115", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 80.744383][ T5422] loop0: detected capacity change from 0 to 256 [ 80.753426][ T5422] exfat: Deprecated parameter 'utf8' [ 80.763177][ T5422] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5424 attached , child_tidptr=0x555556b3a6d0) = 5424 [pid 5424] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5424] chdir("./115") = 0 [pid 5424] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5424] setpgid(0, 0) = 0 [pid 5424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5424] write(3, "1000", 4) = 4 [pid 5424] close(3) = 0 [pid 5424] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5424] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5424] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5424] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5424] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5425 attached [pid 5425] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5425] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5424] <... clone resumed>, parent_tid=[5425], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5425 [pid 5424] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5425] <... futex resumed>) = 0 [pid 5424] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5425] memfd_create("syzkaller", 0) = 3 [pid 5425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5425] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5425] munmap(0x7f2656609000, 131072) = 0 [pid 5425] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5425] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5425] close(3) = 0 [pid 5425] mkdir("./file2", 0777) = 0 [pid 5425] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5425] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5425] chdir("./file2") = 0 [pid 5425] ioctl(4, LOOP_CLR_FD) = 0 [pid 5425] close(4) = 0 [pid 5425] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5424] <... futex resumed>) = 0 [pid 5424] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5425] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5424] <... futex resumed>) = 0 [pid 5424] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5425] <... openat resumed>) = 4 [pid 5425] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5424] <... futex resumed>) = 0 [pid 5425] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5424] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5424] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5425] <... openat resumed>) = 5 [pid 5425] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5424] <... futex resumed>) = 0 [pid 5424] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5424] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5425] <... futex resumed>) = 1 [pid 5425] write(4, "\x00\x00", 2) = 2 [pid 5425] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5424] <... futex resumed>) = 0 [pid 5424] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5425] <... futex resumed>) = 1 [pid 5424] <... futex resumed>) = 0 [pid 5425] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5424] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5425] <... mmap resumed>) = 0x20000000 [pid 5424] <... futex resumed>) = 0 [pid 5424] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5425] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5424] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5425] <... futex resumed>) = 0 [pid 5424] <... mprotect resumed>) = 0 [pid 5425] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5424] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5426], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5426 ./strace-static-x86_64: Process 5426 attached [pid 5424] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5424] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5426] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5426] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5426] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5426] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5424] <... futex resumed>) = 0 [pid 5424] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5425] <... futex resumed>) = 0 [pid 5424] <... futex resumed>) = 1 [pid 5425] getdents64(-1, [pid 5424] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5425] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5425] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5424] <... futex resumed>) = 0 [pid 5426] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5425] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5424] exit_group(0 [pid 5425] <... futex resumed>) = ? [pid 5424] <... exit_group resumed>) = ? [pid 5425] +++ exited with 0 +++ [pid 5426] <... futex resumed>) = ? [pid 5426] +++ exited with 0 +++ [pid 5424] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5424, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./115/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./115/binderfs") = 0 [ 80.865241][ T5425] loop0: detected capacity change from 0 to 256 [ 80.873652][ T5425] exfat: Deprecated parameter 'utf8' [ 80.884801][ T5425] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./115/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./115/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./115/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./115/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./115/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./115/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./115") = 0 mkdir("./116", 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=0x555556b3a6d0) = 5427 ./strace-static-x86_64: Process 5427 attached [pid 5427] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5427] chdir("./116") = 0 [pid 5427] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5427] setpgid(0, 0) = 0 [pid 5427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5427] write(3, "1000", 4) = 4 [pid 5427] close(3) = 0 [pid 5427] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5427] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5427] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5427] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5427] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5428], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5428 [pid 5427] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5427] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5428 attached [pid 5428] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5428] memfd_create("syzkaller", 0) = 3 [pid 5428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5428] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5428] munmap(0x7f2656609000, 131072) = 0 [pid 5428] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5428] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5428] close(3) = 0 [pid 5428] mkdir("./file2", 0777) = 0 [pid 5428] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5428] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5428] chdir("./file2") = 0 [pid 5428] ioctl(4, LOOP_CLR_FD) = 0 [pid 5428] close(4) = 0 [pid 5428] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5428] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5427] <... futex resumed>) = 0 [pid 5427] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5428] <... futex resumed>) = 0 [pid 5427] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5428] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5428] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5428] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5427] <... futex resumed>) = 0 [pid 5427] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5427] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5428] <... futex resumed>) = 0 [pid 5428] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5428] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5427] <... futex resumed>) = 0 [pid 5427] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5428] write(4, "\x00\x00", 2 [pid 5427] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5428] <... write resumed>) = 2 [pid 5428] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5427] <... futex resumed>) = 0 [pid 5427] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5428] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5427] <... futex resumed>) = 0 [pid 5427] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5427] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5428] <... mmap resumed>) = 0x20000000 [pid 5427] <... mmap resumed>) = 0x7f2656608000 [pid 5428] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5427] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5428] <... futex resumed>) = 0 [pid 5427] <... mprotect resumed>) = 0 [pid 5428] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5427] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5429 attached , parent_tid=[5429], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5429 [pid 5427] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5427] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5429] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5429] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5429] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5429] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5427] <... futex resumed>) = 0 [pid 5429] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5427] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5427] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5428] <... futex resumed>) = 0 [pid 5428] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5428] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5427] <... futex resumed>) = 0 [pid 5428] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5427] exit_group(0 [pid 5429] <... futex resumed>) = ? [pid 5428] <... futex resumed>) = ? [pid 5427] <... exit_group resumed>) = ? [pid 5429] +++ exited with 0 +++ [pid 5428] +++ exited with 0 +++ [pid 5427] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5427, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [ 80.988978][ T5428] loop0: detected capacity change from 0 to 256 [ 80.998794][ T5428] exfat: Deprecated parameter 'utf8' [ 81.010036][ T5428] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./116/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./116/binderfs") = 0 umount2("./116/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./116/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./116/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./116/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./116/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./116/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./116") = 0 mkdir("./117", 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=0x555556b3a6d0) = 5430 ./strace-static-x86_64: Process 5430 attached [pid 5430] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5430] chdir("./117") = 0 [pid 5430] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5430] setpgid(0, 0) = 0 [pid 5430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5430] write(3, "1000", 4) = 4 [pid 5430] close(3) = 0 [pid 5430] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5430] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5430] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5430] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5430] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5431], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5431 [pid 5430] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5430] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5431 attached [pid 5431] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5431] memfd_create("syzkaller", 0) = 3 [pid 5431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5431] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5431] munmap(0x7f2656609000, 131072) = 0 [pid 5431] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5431] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5431] close(3) = 0 [pid 5431] mkdir("./file2", 0777) = 0 [pid 5431] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5431] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5431] chdir("./file2") = 0 [pid 5431] ioctl(4, LOOP_CLR_FD) = 0 [pid 5431] close(4) = 0 [pid 5431] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5430] <... futex resumed>) = 0 [pid 5431] <... futex resumed>) = 1 [pid 5430] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5431] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5430] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5431] <... openat resumed>) = 4 [pid 5431] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5430] <... futex resumed>) = 0 [pid 5430] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5431] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5430] <... futex resumed>) = 0 [pid 5430] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5431] <... openat resumed>) = 5 [pid 5431] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5430] <... futex resumed>) = 0 [pid 5431] <... futex resumed>) = 1 [pid 5430] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5431] write(4, "\x00\x00", 2 [pid 5430] <... futex resumed>) = 0 [pid 5430] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5431] <... write resumed>) = 2 [pid 5431] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5430] <... futex resumed>) = 0 [pid 5431] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5430] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5431] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5430] <... futex resumed>) = 0 [pid 5431] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5430] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5431] <... mmap resumed>) = 0x20000000 [pid 5430] <... futex resumed>) = 0 [pid 5431] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5430] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5431] <... futex resumed>) = 0 [pid 5431] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5430] <... mmap resumed>) = 0x7f2656608000 [pid 5430] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5430] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5432 attached , parent_tid=[5432], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5432 [pid 5430] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5430] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5432] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5432] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5432] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5432] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5430] <... futex resumed>) = 0 [pid 5430] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5431] <... futex resumed>) = 0 [pid 5430] <... futex resumed>) = 1 [pid 5431] getdents64(-1, [pid 5430] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5431] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5431] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5430] <... futex resumed>) = 0 [pid 5431] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5430] exit_group(0 [pid 5431] <... futex resumed>) = ? [pid 5430] <... exit_group resumed>) = ? [pid 5431] +++ exited with 0 +++ [pid 5432] +++ exited with 0 +++ [pid 5430] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5430, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./117/binderfs") = 0 umount2("./117/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./117/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./117/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./117/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./117/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./117/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 [ 81.122529][ T5431] loop0: detected capacity change from 0 to 256 [ 81.131337][ T5431] exfat: Deprecated parameter 'utf8' [ 81.141685][ T5431] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) rmdir("./117") = 0 mkdir("./118", 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=0x555556b3a6d0) = 5433 ./strace-static-x86_64: Process 5433 attached [pid 5433] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5433] chdir("./118") = 0 [pid 5433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5433] setpgid(0, 0) = 0 [pid 5433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5433] write(3, "1000", 4) = 4 [pid 5433] close(3) = 0 [pid 5433] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5433] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5433] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5433] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5433] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5434], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5434 ./strace-static-x86_64: Process 5434 attached [pid 5433] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5433] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5434] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5434] memfd_create("syzkaller", 0) = 3 [pid 5434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5434] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5434] munmap(0x7f2656609000, 131072) = 0 [pid 5434] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5434] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5434] close(3) = 0 [pid 5434] mkdir("./file2", 0777) = 0 [pid 5434] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5434] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5434] chdir("./file2") = 0 [pid 5434] ioctl(4, LOOP_CLR_FD) = 0 [pid 5434] close(4) = 0 [pid 5434] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5433] <... futex resumed>) = 0 [pid 5434] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5433] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5433] <... futex resumed>) = 0 [pid 5434] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5433] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5434] <... openat resumed>) = 4 [pid 5434] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5433] <... futex resumed>) = 0 [pid 5434] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5433] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5433] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5434] <... openat resumed>) = 5 [pid 5434] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5433] <... futex resumed>) = 0 [pid 5433] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5434] write(4, "\x00\x00", 2 [pid 5433] <... futex resumed>) = 0 [pid 5433] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5434] <... write resumed>) = 2 [pid 5434] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5433] <... futex resumed>) = 0 [pid 5434] <... futex resumed>) = 1 [pid 5434] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5433] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5433] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5433] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5434] <... mmap resumed>) = 0x20000000 [pid 5433] <... mmap resumed>) = 0x7f2656608000 [pid 5434] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5433] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5433] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5434] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5435 attached [pid 5434] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5433] <... clone resumed>, parent_tid=[5435], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5435 [pid 5435] set_robust_list(0x7f26566289e0, 24 [pid 5433] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5435] <... set_robust_list resumed>) = 0 [pid 5433] <... futex resumed>) = 0 [pid 5433] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5435] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5435] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5435] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5433] <... futex resumed>) = 0 [pid 5433] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5434] <... futex resumed>) = 0 [pid 5433] <... futex resumed>) = 1 [pid 5434] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5433] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5434] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5434] <... futex resumed>) = 0 [pid 5434] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5433] exit_group(0 [pid 5434] <... futex resumed>) = ? [pid 5433] <... exit_group resumed>) = ? [pid 5434] +++ exited with 0 +++ [pid 5435] +++ exited with 0 +++ [pid 5433] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5433, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 81.223946][ T5434] loop0: detected capacity change from 0 to 256 [ 81.232611][ T5434] exfat: Deprecated parameter 'utf8' [ 81.243357][ T5434] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./118/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./118/binderfs") = 0 umount2("./118/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./118/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./118/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./118/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./118/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./118/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./118") = 0 mkdir("./119", 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=0x555556b3a6d0) = 5436 ./strace-static-x86_64: Process 5436 attached [pid 5436] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5436] chdir("./119") = 0 [pid 5436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5436] setpgid(0, 0) = 0 [pid 5436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5436] write(3, "1000", 4) = 4 [pid 5436] close(3) = 0 [pid 5436] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5436] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5436] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5436] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5436] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5437], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5437 [pid 5436] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5436] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5437 attached [pid 5437] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5437] memfd_create("syzkaller", 0) = 3 [pid 5437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5437] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5437] munmap(0x7f2656609000, 131072) = 0 [pid 5437] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5437] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5437] close(3) = 0 [pid 5437] mkdir("./file2", 0777) = 0 [pid 5437] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5437] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5437] chdir("./file2") = 0 [pid 5437] ioctl(4, LOOP_CLR_FD) = 0 [pid 5437] close(4) = 0 [pid 5437] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5436] <... futex resumed>) = 0 [pid 5436] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5436] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5437] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5437] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5436] <... futex resumed>) = 0 [pid 5437] <... futex resumed>) = 1 [pid 5436] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5436] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5437] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5437] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5436] <... futex resumed>) = 0 [pid 5436] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5436] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5437] write(4, "\x00\x00", 2) = 2 [pid 5437] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5436] <... futex resumed>) = 0 [pid 5436] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5436] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5436] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5436] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5436] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5438 attached , parent_tid=[5438], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5438 [pid 5438] set_robust_list(0x7f26566289e0, 24 [pid 5436] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5438] <... set_robust_list resumed>) = 0 [pid 5436] <... futex resumed>) = 0 [pid 5438] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5436] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5437] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5438] <... openat resumed>) = 6 [pid 5438] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5437] <... mmap resumed>) = 0x20000000 [pid 5436] <... futex resumed>) = 0 [pid 5438] getdents64(6, [pid 5436] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5437] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5436] <... futex resumed>) = 0 [pid 5436] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5438] <... getdents64 resumed>NULL, 32776) = -1 EFAULT (Bad address) [pid 5438] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5436] <... futex resumed>) = 0 [pid 5438] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5436] exit_group(0 [pid 5438] <... futex resumed>) = ? [pid 5436] <... exit_group resumed>) = ? [pid 5438] +++ exited with 0 +++ [pid 5437] <... futex resumed>) = ? [pid 5437] +++ exited with 0 +++ [pid 5436] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5436, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./119/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./119/binderfs") = 0 [ 81.353295][ T5437] loop0: detected capacity change from 0 to 256 [ 81.361710][ T5437] exfat: Deprecated parameter 'utf8' [ 81.372507][ T5437] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./119/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./119/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./119/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./119/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./119/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./119/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./119") = 0 mkdir("./120", 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=0x555556b3a6d0) = 5439 ./strace-static-x86_64: Process 5439 attached [pid 5439] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5439] chdir("./120") = 0 [pid 5439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5439] setpgid(0, 0) = 0 [pid 5439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5439] write(3, "1000", 4) = 4 [pid 5439] close(3) = 0 [pid 5439] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5439] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5439] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5439] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5439] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5440], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5440 [pid 5439] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5439] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5440 attached [pid 5440] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5440] memfd_create("syzkaller", 0) = 3 [pid 5440] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5440] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5440] munmap(0x7f2656609000, 131072) = 0 [pid 5440] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5440] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5440] close(3) = 0 [pid 5440] mkdir("./file2", 0777) = 0 [pid 5440] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5440] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5440] chdir("./file2") = 0 [pid 5440] ioctl(4, LOOP_CLR_FD) = 0 [pid 5440] close(4) = 0 [pid 5440] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5439] <... futex resumed>) = 0 [pid 5439] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5439] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5440] <... futex resumed>) = 1 [pid 5440] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5440] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5439] <... futex resumed>) = 0 [pid 5439] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5439] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5440] <... futex resumed>) = 1 [pid 5440] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5440] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5439] <... futex resumed>) = 0 [pid 5439] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5439] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5440] <... futex resumed>) = 1 [pid 5440] write(4, "\x00\x00", 2) = 2 [pid 5440] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5439] <... futex resumed>) = 0 [pid 5439] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5439] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5439] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5439] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5439] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5441], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5441 [pid 5439] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5439] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5440] <... futex resumed>) = 1 [pid 5440] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5440] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5440] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5441 attached [pid 5441] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5441] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5441] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5441] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5439] <... futex resumed>) = 0 [pid 5439] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5439] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5440] <... futex resumed>) = 0 [pid 5440] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5440] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5439] <... futex resumed>) = 0 [pid 5439] exit_group(0) = ? [pid 5440] <... futex resumed>) = ? [pid 5440] +++ exited with 0 +++ [pid 5441] <... futex resumed>) = ? [pid 5441] +++ exited with 0 +++ [pid 5439] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5439, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./120/binderfs") = 0 umount2("./120/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 81.475056][ T5440] loop0: detected capacity change from 0 to 256 [ 81.485391][ T5440] exfat: Deprecated parameter 'utf8' [ 81.495586][ T5440] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./120/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./120/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./120/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./120/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./120/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./120") = 0 mkdir("./121", 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 5442 attached , child_tidptr=0x555556b3a6d0) = 5442 [pid 5442] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5442] chdir("./121") = 0 [pid 5442] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5442] setpgid(0, 0) = 0 [pid 5442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5442] write(3, "1000", 4) = 4 [pid 5442] close(3) = 0 [pid 5442] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5442] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5442] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5442] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5442] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5443], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5443 [pid 5442] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5442] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5443 attached [pid 5443] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5443] memfd_create("syzkaller", 0) = 3 [pid 5443] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5443] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5443] munmap(0x7f2656609000, 131072) = 0 [pid 5443] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5443] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5443] close(3) = 0 [pid 5443] mkdir("./file2", 0777) = 0 [ 81.567572][ T7] cfg80211: failed to load regulatory.db [ 81.604824][ T5443] loop0: detected capacity change from 0 to 256 [pid 5443] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5443] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5443] chdir("./file2") = 0 [pid 5443] ioctl(4, LOOP_CLR_FD) = 0 [pid 5443] close(4) = 0 [pid 5443] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5442] <... futex resumed>) = 0 [pid 5443] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5442] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5442] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5443] <... openat resumed>) = 4 [pid 5443] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5442] <... futex resumed>) = 0 [pid 5443] <... futex resumed>) = 1 [pid 5442] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5443] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5442] <... futex resumed>) = 0 [pid 5442] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5443] <... openat resumed>) = 5 [pid 5443] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5442] <... futex resumed>) = 0 [pid 5442] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5443] write(4, "\x00\x00", 2 [pid 5442] <... futex resumed>) = 0 [pid 5442] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5443] <... write resumed>) = 2 [pid 5443] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5442] <... futex resumed>) = 0 [pid 5443] <... futex resumed>) = 1 [pid 5442] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5442] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5442] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5442] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5442] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5444], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5444 [pid 5442] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5442] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5443] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0) = 0x20000000 [pid 5443] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5443] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5444 attached [pid 5444] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5444] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5444] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5444] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5442] <... futex resumed>) = 0 [pid 5442] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5442] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5444] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5443] <... futex resumed>) = 0 [pid 5443] getdents64(-1, NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5443] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5442] <... futex resumed>) = 0 [pid 5443] <... futex resumed>) = 1 [pid 5442] exit_group(0) = ? [pid 5444] <... futex resumed>) = ? [pid 5444] +++ exited with 0 +++ [pid 5443] +++ exited with 0 +++ [pid 5442] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5442, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./121/binderfs") = 0 umount2("./121/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./121/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./121/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./121/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 81.613208][ T5443] exfat: Deprecated parameter 'utf8' [ 81.623277][ T5443] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) openat(AT_FDCWD, "./121/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./121/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./121") = 0 mkdir("./122", 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=0x555556b3a6d0) = 5445 ./strace-static-x86_64: Process 5445 attached [pid 5445] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5445] chdir("./122") = 0 [pid 5445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5445] setpgid(0, 0) = 0 [pid 5445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5445] write(3, "1000", 4) = 4 [pid 5445] close(3) = 0 [pid 5445] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5445] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5445] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5445] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5446], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5446 [pid 5445] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5445] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5446 attached [pid 5446] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5446] memfd_create("syzkaller", 0) = 3 [pid 5446] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5446] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5446] munmap(0x7f2656609000, 131072) = 0 [pid 5446] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5446] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5446] close(3) = 0 [pid 5446] mkdir("./file2", 0777) = 0 [pid 5446] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5446] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5446] chdir("./file2") = 0 [pid 5446] ioctl(4, LOOP_CLR_FD) = 0 [pid 5446] close(4) = 0 [pid 5446] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5446] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5445] <... futex resumed>) = 0 [pid 5445] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5446] <... futex resumed>) = 0 [pid 5445] <... futex resumed>) = 1 [pid 5446] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5445] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5446] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5445] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5446] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5445] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5446] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5445] <... futex resumed>) = 0 [pid 5446] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5445] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5446] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5445] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5445] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5446] <... futex resumed>) = 0 [pid 5445] <... futex resumed>) = 1 [pid 5446] write(4, "\x00\x00", 2 [pid 5445] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5446] <... write resumed>) = 2 [pid 5446] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5445] <... futex resumed>) = 0 [pid 5446] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5445] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5446] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5445] <... futex resumed>) = 0 [pid 5446] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5445] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5446] <... mmap resumed>) = 0x20000000 [pid 5445] <... futex resumed>) = 0 [pid 5446] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5446] <... futex resumed>) = 0 [pid 5445] <... mmap resumed>) = 0x7f2656608000 [pid 5446] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5445] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5445] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5447 attached , parent_tid=[5447], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5447 [pid 5445] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5445] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5447] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5447] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5447] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5447] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5445] <... futex resumed>) = 0 [pid 5447] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5445] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5446] <... futex resumed>) = 0 [pid 5445] <... futex resumed>) = 1 [pid 5446] getdents64(-1, [pid 5445] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5446] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5446] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5445] <... futex resumed>) = 0 [pid 5446] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5445] exit_group(0 [pid 5447] <... futex resumed>) = ? [pid 5446] <... futex resumed>) = ? [pid 5445] <... exit_group resumed>) = ? [pid 5447] +++ exited with 0 +++ [pid 5446] +++ exited with 0 +++ [pid 5445] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5445, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./122/binderfs") = 0 umount2("./122/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./122/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./122/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./122/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./122/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 81.709016][ T5446] loop0: detected capacity change from 0 to 256 [ 81.719462][ T5446] exfat: Deprecated parameter 'utf8' [ 81.731483][ T5446] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./122/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./122") = 0 mkdir("./123", 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=0x555556b3a6d0) = 5448 ./strace-static-x86_64: Process 5448 attached [pid 5448] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5448] chdir("./123") = 0 [pid 5448] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5448] setpgid(0, 0) = 0 [pid 5448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5448] write(3, "1000", 4) = 4 [pid 5448] close(3) = 0 [pid 5448] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5448] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5448] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5448] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5449 attached , parent_tid=[5449], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5449 [pid 5449] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5448] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5448] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5449] memfd_create("syzkaller", 0) = 3 [pid 5449] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5449] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5449] munmap(0x7f2656609000, 131072) = 0 [pid 5449] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5449] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5449] close(3) = 0 [pid 5449] mkdir("./file2", 0777) = 0 [pid 5449] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5449] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5449] chdir("./file2") = 0 [pid 5449] ioctl(4, LOOP_CLR_FD) = 0 [pid 5449] close(4) = 0 [pid 5449] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5448] <... futex resumed>) = 0 [pid 5449] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5448] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5448] <... futex resumed>) = 0 [pid 5449] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5448] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5449] <... openat resumed>) = 4 [pid 5449] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5448] <... futex resumed>) = 0 [pid 5449] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5448] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5448] <... futex resumed>) = 0 [pid 5449] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5448] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5449] <... openat resumed>) = 5 [pid 5449] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5448] <... futex resumed>) = 0 [pid 5449] <... futex resumed>) = 1 [pid 5448] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5448] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5449] write(4, "\x00\x00", 2) = 2 [pid 5449] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5448] <... futex resumed>) = 0 [pid 5449] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5448] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5448] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5449] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5448] <... futex resumed>) = 0 [pid 5448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2656608000 [pid 5448] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5448] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5450 attached [pid 5449] <... mmap resumed>) = 0x20000000 [pid 5448] <... clone resumed>, parent_tid=[5450], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5450 [pid 5450] set_robust_list(0x7f26566289e0, 24 [pid 5449] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5448] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5450] <... set_robust_list resumed>) = 0 [pid 5449] <... futex resumed>) = 0 [pid 5448] <... futex resumed>) = 0 [pid 5450] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5449] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5448] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5450] openat(AT_FDCWD, "", O_RDONLY) = -1 ENOENT (No such file or directory) [pid 5450] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5448] <... futex resumed>) = 0 [pid 5450] futex(0x7f265eb037b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5448] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5449] <... futex resumed>) = 0 [pid 5448] <... futex resumed>) = 1 [pid 5449] getdents64(-1, [pid 5448] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5449] <... getdents64 resumed>NULL, 32776) = -1 EBADF (Bad file descriptor) [pid 5449] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5448] <... futex resumed>) = 0 [pid 5449] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5448] exit_group(0 [pid 5450] <... futex resumed>) = ? [pid 5449] <... futex resumed>) = ? [pid 5448] <... exit_group resumed>) = ? [pid 5450] +++ exited with 0 +++ [pid 5449] +++ exited with 0 +++ [pid 5448] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5448, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555556b3b720 /* 4 entries */, 32768) = 112 umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./123/binderfs") = 0 [ 81.820643][ T5449] loop0: detected capacity change from 0 to 256 [ 81.831179][ T5449] exfat: Deprecated parameter 'utf8' [ 81.841643][ T5449] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0x275db541, utbl_chksum : 0xe619d30d) umount2("./123/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./123/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./123/file2", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./123/file2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./123/file2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555556b43760 /* 2 entries */, 32768) = 48 getdents64(4, 0x555556b43760 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./123/file2") = 0 getdents64(3, 0x555556b3b720 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./123") = 0 mkdir("./124", 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=0x555556b3a6d0) = 5451 ./strace-static-x86_64: Process 5451 attached [pid 5451] set_robust_list(0x555556b3a6e0, 24) = 0 [pid 5451] chdir("./124") = 0 [pid 5451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5451] setpgid(0, 0) = 0 [pid 5451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5451] write(3, "1000", 4) = 4 [pid 5451] close(3) = 0 [pid 5451] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5451] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5451] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f265ea09000 [pid 5451] mprotect(0x7f265ea0a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5451] clone(child_stack=0x7f265ea292f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5452 attached , parent_tid=[5452], tls=0x7f265ea29700, child_tidptr=0x7f265ea299d0) = 5452 [pid 5452] set_robust_list(0x7f265ea299e0, 24) = 0 [pid 5452] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5451] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5452] <... futex resumed>) = 0 [pid 5451] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5452] memfd_create("syzkaller", 0) = 3 [pid 5452] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2656609000 [pid 5452] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5452] munmap(0x7f2656609000, 131072) = 0 [pid 5452] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5452] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5452] close(3) = 0 [pid 5452] mkdir("./file2", 0777) = 0 [pid 5452] mount("/dev/loop0", "./file2", "exfat", MS_BORN, "iocharset=cp864,allow_utime=00000000000000000000004,utf8,uid=0x000000000000ee01") = 0 [pid 5452] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5452] chdir("./file2") = 0 [pid 5452] ioctl(4, LOOP_CLR_FD) = 0 [pid 5452] close(4) = 0 [pid 5452] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5451] <... futex resumed>) = 0 [pid 5451] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5451] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5452] openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5452] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5451] <... futex resumed>) = 0 [pid 5452] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5451] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5452] <... futex resumed>) = 0 [pid 5451] <... futex resumed>) = 1 [pid 5452] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5451] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5452] <... openat resumed>) = 5 [pid 5452] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5451] <... futex resumed>) = 0 [pid 5451] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5451] futex(0x7f265eb037ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5452] write(4, "\x00\x00", 2) = 2 [pid 5452] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5452] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5451] <... futex resumed>) = 0 [pid 5452] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5451] futex(0x7f265eb037a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5451] futex(0x7f265eb037bc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5451] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5452] mmap(0x20000000, 4194304, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 4, 0 [pid 5451] <... mmap resumed>) = 0x7f2656608000 [pid 5451] mprotect(0x7f2656609000, 131072, PROT_READ|PROT_WRITE [pid 5452] <... mmap resumed>) = 0x20000000 [pid 5452] futex(0x7f265eb037ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5451] <... mprotect resumed>) = 0 [pid 5452] futex(0x7f265eb037a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5451] clone(child_stack=0x7f26566282f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5453], tls=0x7f2656628700, child_tidptr=0x7f26566289d0) = 5453 [pid 5451] futex(0x7f265eb037b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5451] futex(0x7f265eb037bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5453 attached [pid 5453] set_robust_list(0x7f26566289e0, 24) = 0 [pid 5453] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- [pid 5453] openat(AT_FD