./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3037594279 <...> Warning: Permanently added '10.128.0.76' (ED25519) to the list of known hosts. execve("./syz-executor3037594279", ["./syz-executor3037594279"], 0x7ffd0b4f29d0 /* 10 vars */) = 0 brk(NULL) = 0x55555565b000 brk(0x55555565bd40) = 0x55555565bd40 arch_prctl(ARCH_SET_FS, 0x55555565b3c0) = 0 set_tid_address(0x55555565b690) = 5018 set_robust_list(0x55555565b6a0, 24) = 0 rseq(0x55555565bce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3037594279", 4096) = 28 getrandom("\x20\x53\x20\x68\x1d\xe0\x93\x68", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555565bd40 brk(0x55555567cd40) = 0x55555567cd40 brk(0x55555567d000) = 0x55555567d000 mprotect(0x7faefa34c000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5019 attached , child_tidptr=0x55555565b690) = 5019 [pid 5018] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5019] set_robust_list(0x55555565b6a0, 24) = 0 [pid 5018] <... clone resumed>, child_tidptr=0x55555565b690) = 5020 [pid 5018] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5019] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 5020 attached [pid 5018] <... clone resumed>, child_tidptr=0x55555565b690) = 5021 [pid 5018] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5019] <... openat resumed>) = 3 [pid 5019] ioctl(3, LOOP_CLR_FD [pid 5020] set_robust_list(0x55555565b6a0, 24 [pid 5019] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5020] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5021 attached [pid 5018] <... clone resumed>, child_tidptr=0x55555565b690) = 5022 [pid 5018] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5019] close(3) = 0 [pid 5018] <... clone resumed>, child_tidptr=0x55555565b690) = 5023 [pid 5018] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555565b690) = 5024 ./strace-static-x86_64: Process 5022 attached [pid 5022] set_robust_list(0x55555565b6a0, 24) = 0 [pid 5022] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 5024 attached [pid 5024] set_robust_list(0x55555565b6a0, 24 [pid 5022] <... openat resumed>) = 3 [pid 5024] <... set_robust_list resumed>) = 0 [pid 5024] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5022] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5022] close(3) = 0 [pid 5024] <... openat resumed>) = 3 [pid 5022] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5024] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5024] close(3) = 0 [pid 5020] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5024] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5019] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5020] <... openat resumed>) = 3 [pid 5022] <... clone resumed>, child_tidptr=0x55555565b690) = 5025 [pid 5020] ioctl(3, LOOP_CLR_FD [pid 5019] <... clone resumed>, child_tidptr=0x55555565b690) = 5026 [pid 5024] <... clone resumed>, child_tidptr=0x55555565b690) = 5027 [pid 5020] <... ioctl resumed>) = -1 ENXIO (No such device or address) ./strace-static-x86_64: Process 5027 attached [pid 5020] close(3 [pid 5027] set_robust_list(0x55555565b6a0, 24 [pid 5020] <... close resumed>) = 0 [pid 5027] <... set_robust_list resumed>) = 0 [pid 5020] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5025 attached ./strace-static-x86_64: Process 5028 attached ./strace-static-x86_64: Process 5026 attached ./strace-static-x86_64: Process 5023 attached [pid 5027] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5021] set_robust_list(0x55555565b6a0, 24 [pid 5027] <... prctl resumed>) = 0 [pid 5025] set_robust_list(0x55555565b6a0, 24 [pid 5023] set_robust_list(0x55555565b6a0, 24 [pid 5028] set_robust_list(0x55555565b6a0, 24 [pid 5026] set_robust_list(0x55555565b6a0, 24 [pid 5021] <... set_robust_list resumed>) = 0 [pid 5020] <... clone resumed>, child_tidptr=0x55555565b690) = 5028 [pid 5027] setpgid(0, 0 [pid 5025] <... set_robust_list resumed>) = 0 [pid 5023] <... set_robust_list resumed>) = 0 [pid 5027] <... setpgid resumed>) = 0 [pid 5025] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5023] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5028] <... set_robust_list resumed>) = 0 [pid 5026] <... set_robust_list resumed>) = 0 [pid 5021] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5028] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5026] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5025] <... prctl resumed>) = 0 [pid 5023] <... openat resumed>) = 3 [pid 5021] <... openat resumed>) = 3 [pid 5028] <... prctl resumed>) = 0 [pid 5027] <... openat resumed>) = 3 [pid 5026] <... prctl resumed>) = 0 [pid 5025] setpgid(0, 0 [pid 5023] ioctl(3, LOOP_CLR_FD [pid 5021] ioctl(3, LOOP_CLR_FD [pid 5028] setpgid(0, 0 [pid 5027] write(3, "1000", 4 [pid 5025] <... setpgid resumed>) = 0 [pid 5023] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5028] <... setpgid resumed>) = 0 [pid 5027] <... write resumed>) = 4 [pid 5026] setpgid(0, 0 [pid 5025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5023] close(3 [pid 5021] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5027] close(3 [pid 5026] <... setpgid resumed>) = 0 [pid 5025] <... openat resumed>) = 3 [pid 5023] <... close resumed>) = 0 [pid 5028] <... openat resumed>) = 3 [pid 5027] <... close resumed>) = 0 [pid 5025] write(3, "1000", 4 [pid 5023] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5021] close(3 [pid 5028] write(3, "1000", 4 [pid 5027] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5025] <... write resumed>) = 4 [pid 5021] <... close resumed>) = 0 [pid 5028] <... write resumed>) = 4 [pid 5027] <... futex resumed>) = 0 [pid 5025] close(3 [pid 5026] <... openat resumed>) = 3 [pid 5023] <... clone resumed>, child_tidptr=0x55555565b690) = 5030 ./strace-static-x86_64: Process 5030 attached [pid 5028] close(3 [pid 5027] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, [pid 5026] write(3, "1000", 4 [pid 5025] <... close resumed>) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5030] set_robust_list(0x55555565b6a0, 24 [pid 5028] <... close resumed>) = 0 [pid 5027] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5026] <... write resumed>) = 4 [pid 5025] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5030] <... set_robust_list resumed>) = 0 [pid 5028] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5027] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5026] close(3 [pid 5025] <... futex resumed>) = 0 [pid 5021] <... clone resumed>, child_tidptr=0x55555565b690) = 5031 ./strace-static-x86_64: Process 5031 attached [pid 5030] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5028] <... futex resumed>) = 0 [pid 5027] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5026] <... close resumed>) = 0 [pid 5025] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, [pid 5031] set_robust_list(0x55555565b6a0, 24 [pid 5030] <... prctl resumed>) = 0 [pid 5028] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, [pid 5027] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5026] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5025] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5031] <... set_robust_list resumed>) = 0 [pid 5030] setpgid(0, 0 [pid 5028] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5027] <... mmap resumed>) = 0x7faefa263000 [pid 5026] <... futex resumed>) = 0 [pid 5025] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5031] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5030] <... setpgid resumed>) = 0 [pid 5028] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5027] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE [pid 5026] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, [pid 5025] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5031] <... prctl resumed>) = 0 [pid 5030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5028] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5027] <... mprotect resumed>) = 0 [pid 5026] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5031] setpgid(0, 0 [pid 5030] <... openat resumed>) = 3 [pid 5028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5027] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5026] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5025] <... mmap resumed>) = 0x7faefa263000 [pid 5031] <... setpgid resumed>) = 0 [pid 5030] write(3, "1000", 4 [pid 5028] <... mmap resumed>) = 0x7faefa263000 [pid 5027] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5026] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5025] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE [pid 5031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5030] <... write resumed>) = 4 [pid 5028] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE [pid 5027] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faefa283990, parent_tid=0x7faefa283990, exit_signal=0, stack=0x7faefa263000, stack_size=0x20300, tls=0x7faefa2836c0} [pid 5026] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5025] <... mprotect resumed>) = 0 [pid 5031] <... openat resumed>) = 3 [pid 5030] close(3 [pid 5028] <... mprotect resumed>) = 0 [pid 5026] <... mmap resumed>) = 0x7faefa263000 [pid 5025] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5031] write(3, "1000", 4 [pid 5030] <... close resumed>) = 0 [pid 5028] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5027] <... clone3 resumed> => {parent_tid=[5032]}, 88) = 5032 [pid 5026] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE [pid 5025] <... rt_sigprocmask resumed>[], 8) = 0 ./strace-static-x86_64: Process 5032 attached [pid 5031] <... write resumed>) = 4 [pid 5030] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5028] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5027] rt_sigprocmask(SIG_SETMASK, [], [pid 5026] <... mprotect resumed>) = 0 [pid 5025] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faefa283990, parent_tid=0x7faefa283990, exit_signal=0, stack=0x7faefa263000, stack_size=0x20300, tls=0x7faefa2836c0} [pid 5032] rseq(0x7faefa283fe0, 0x20, 0, 0x53053053 [pid 5031] close(3 [pid 5030] <... futex resumed>) = 0 [pid 5028] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faefa283990, parent_tid=0x7faefa283990, exit_signal=0, stack=0x7faefa263000, stack_size=0x20300, tls=0x7faefa2836c0} [pid 5027] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5026] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5032] <... rseq resumed>) = 0 [pid 5031] <... close resumed>) = 0 [pid 5030] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, [pid 5027] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5026] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5025] <... clone3 resumed> => {parent_tid=[5033]}, 88) = 5033 ./strace-static-x86_64: Process 5034 attached [pid 5032] set_robust_list(0x7faefa2839a0, 24 [pid 5031] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5030] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5028] <... clone3 resumed> => {parent_tid=[5034]}, 88) = 5034 [pid 5027] <... futex resumed>) = 0 [pid 5026] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faefa283990, parent_tid=0x7faefa283990, exit_signal=0, stack=0x7faefa263000, stack_size=0x20300, tls=0x7faefa2836c0} [pid 5025] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 5033 attached [pid 5034] rseq(0x7faefa283fe0, 0x20, 0, 0x53053053 [pid 5032] <... set_robust_list resumed>) = 0 [pid 5031] <... futex resumed>) = 0 [pid 5030] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5028] rt_sigprocmask(SIG_SETMASK, [], [pid 5027] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5025] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 5035 attached [pid 5034] <... rseq resumed>) = 0 [pid 5033] rseq(0x7faefa283fe0, 0x20, 0, 0x53053053 [pid 5032] rt_sigprocmask(SIG_SETMASK, [], [pid 5031] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, [pid 5030] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5028] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5026] <... clone3 resumed> => {parent_tid=[5035]}, 88) = 5035 [pid 5025] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5035] rseq(0x7faefa283fe0, 0x20, 0, 0x53053053 [pid 5034] set_robust_list(0x7faefa2839a0, 24 [pid 5033] <... rseq resumed>) = 0 [pid 5032] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5031] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5028] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5026] rt_sigprocmask(SIG_SETMASK, [], [pid 5025] <... futex resumed>) = 0 [pid 5035] <... rseq resumed>) = 0 [pid 5034] <... set_robust_list resumed>) = 0 [pid 5033] set_robust_list(0x7faefa2839a0, 24 [pid 5032] memfd_create("syzkaller", 0 [pid 5031] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5030] <... mmap resumed>) = 0x7faefa263000 [pid 5028] <... futex resumed>) = 0 [pid 5026] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5025] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5035] set_robust_list(0x7faefa2839a0, 24 [pid 5034] rt_sigprocmask(SIG_SETMASK, [], [pid 5033] <... set_robust_list resumed>) = 0 [pid 5030] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE [pid 5028] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5026] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5033] rt_sigprocmask(SIG_SETMASK, [], [pid 5030] <... mprotect resumed>) = 0 [pid 5026] <... futex resumed>) = 0 [pid 5033] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5030] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5026] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5033] memfd_create("syzkaller", 0 [pid 5030] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5035] <... set_robust_list resumed>) = 0 [pid 5034] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5033] <... memfd_create resumed>) = 3 [pid 5031] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5030] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faefa283990, parent_tid=0x7faefa283990, exit_signal=0, stack=0x7faefa263000, stack_size=0x20300, tls=0x7faefa2836c0} [pid 5035] rt_sigprocmask(SIG_SETMASK, [], [pid 5034] memfd_create("syzkaller", 0 [pid 5033] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5032] <... memfd_create resumed>) = 3 [pid 5031] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 5038 attached [pid 5035] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5034] <... memfd_create resumed>) = 3 [pid 5033] <... mmap resumed>) = 0x7faef1e63000 [pid 5032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5031] <... mmap resumed>) = 0x7faefa263000 [pid 5030] <... clone3 resumed> => {parent_tid=[5038]}, 88) = 5038 [pid 5038] rseq(0x7faefa283fe0, 0x20, 0, 0x53053053 [pid 5035] memfd_create("syzkaller", 0 [pid 5034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5031] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE [pid 5030] rt_sigprocmask(SIG_SETMASK, [], [pid 5032] <... mmap resumed>) = 0x7faef1e63000 [pid 5038] <... rseq resumed>) = 0 [pid 5035] <... memfd_create resumed>) = 3 [pid 5034] <... mmap resumed>) = 0x7faef1e63000 [pid 5031] <... mprotect resumed>) = 0 [pid 5030] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5038] set_robust_list(0x7faefa2839a0, 24 [pid 5035] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5031] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5030] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5038] <... set_robust_list resumed>) = 0 [pid 5035] <... mmap resumed>) = 0x7faef1e63000 [pid 5031] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5030] <... futex resumed>) = 0 [pid 5038] rt_sigprocmask(SIG_SETMASK, [], [pid 5031] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faefa283990, parent_tid=0x7faefa283990, exit_signal=0, stack=0x7faefa263000, stack_size=0x20300, tls=0x7faefa2836c0} [pid 5038] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5030] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5038] memfd_create("syzkaller", 0 [pid 5031] <... clone3 resumed> => {parent_tid=[5039]}, 88) = 5039 [pid 5038] <... memfd_create resumed>) = 3 [pid 5031] rt_sigprocmask(SIG_SETMASK, [], [pid 5038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5031] <... rt_sigprocmask resumed>NULL, 8) = 0 [ 67.580905][ T5032] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5032 'syz-executor303' [pid 5038] <... mmap resumed>) = 0x7faef1e63000 [pid 5031] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5039 attached ) = 0 [pid 5031] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5039] rseq(0x7faefa283fe0, 0x20, 0, 0x53053053) = 0 [pid 5039] set_robust_list(0x7faefa2839a0, 24) = 0 [pid 5039] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5039] memfd_create("syzkaller", 0) = 3 [pid 5039] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faef1e63000 [pid 5033] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5038] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5035] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5034] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5032] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5039] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5033] <... write resumed>) = 16777216 [pid 5033] munmap(0x7faef1e63000, 16777216) = 0 [pid 5033] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5033] ioctl(4, LOOP_SET_FD, 3 [pid 5032] <... write resumed>) = 16777216 [pid 5032] munmap(0x7faef1e63000, 16777216 [pid 5033] <... ioctl resumed>) = 0 [pid 5033] close(3) = 0 [pid 5033] mkdir("./file0", 0777) = 0 [pid 5033] mount("/dev/loop3", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1," [pid 5032] <... munmap resumed>) = 0 [pid 5039] <... write resumed>) = 16777216 [pid 5039] munmap(0x7faef1e63000, 16777216 [pid 5032] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [ 68.540783][ T5033] loop3: detected capacity change from 0 to 32768 [ 68.576580][ T5033] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop3 scanned by syz-executor303 (5033) [pid 5032] ioctl(4, LOOP_SET_FD, 3 [pid 5039] <... munmap resumed>) = 0 [pid 5038] <... write resumed>) = 16777216 [pid 5039] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5038] munmap(0x7faef1e63000, 16777216 [pid 5035] <... write resumed>) = 16777216 [pid 5034] <... write resumed>) = 16777216 [pid 5039] <... openat resumed>) = 4 [pid 5034] munmap(0x7faef1e63000, 16777216 [pid 5039] ioctl(4, LOOP_SET_FD, 3 [pid 5038] <... munmap resumed>) = 0 [pid 5035] munmap(0x7faef1e63000, 16777216 [pid 5034] <... munmap resumed>) = 0 [pid 5035] <... munmap resumed>) = 0 [ 68.581313][ T5032] loop5: detected capacity change from 0 to 32768 [pid 5034] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5034] ioctl(4, LOOP_SET_FD, 3 [pid 5039] <... ioctl resumed>) = 0 [pid 5038] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5035] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5032] <... ioctl resumed>) = 0 [pid 5039] close(3 [pid 5038] <... openat resumed>) = 4 [pid 5035] <... openat resumed>) = 4 [pid 5032] close(3 [pid 5039] <... close resumed>) = 0 [pid 5038] ioctl(4, LOOP_SET_FD, 3 [pid 5035] ioctl(4, LOOP_SET_FD, 3 [pid 5032] <... close resumed>) = 0 [pid 5034] <... ioctl resumed>) = 0 [pid 5032] mkdir("./file0", 0777 [pid 5034] close(3) = 0 [pid 5034] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5034] mount("/dev/loop1", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1," [pid 5032] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5032] mount("/dev/loop5", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1," [pid 5039] mkdir("./file0", 0777 [ 68.623841][ T5039] loop2: detected capacity change from 0 to 32768 [ 68.631404][ T5034] loop1: detected capacity change from 0 to 32768 [ 68.636387][ T5038] loop4: detected capacity change from 0 to 32768 [ 68.644902][ T5033] BTRFS info (device loop3): using xxhash64 (xxhash64-generic) checksum algorithm [ 68.654736][ T5034] BTRFS warning: duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor303 (5034) [ 68.654957][ T5035] loop0: detected capacity change from 0 to 32768 [pid 5038] <... ioctl resumed>) = 0 [pid 5039] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5038] close(3 [pid 5039] mount("/dev/loop2", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1," [pid 5038] <... close resumed>) = 0 [pid 5035] <... ioctl resumed>) = 0 [pid 5034] <... mount resumed>) = -1 EEXIST (File exists) [pid 5034] ioctl(4, LOOP_CLR_FD [pid 5038] mkdir("./file0", 0777 [pid 5035] close(3 [pid 5038] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5035] <... close resumed>) = 0 [pid 5039] <... mount resumed>) = -1 EEXIST (File exists) [pid 5038] mount("/dev/loop4", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1," [ 68.672473][ T5033] BTRFS info (device loop3): force clearing of disk cache [ 68.680950][ T5033] BTRFS info (device loop3): setting nodatasum [ 68.687938][ T5033] BTRFS info (device loop3): allowing degraded mounts [ 68.696115][ T5033] BTRFS info (device loop3): enabling disk space caching [ 68.699991][ T5039] BTRFS warning: duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor303 (5039) [ 68.703723][ T5033] BTRFS info (device loop3): disk space caching is enabled [pid 5035] mkdir("./file0", 0777 [pid 5039] ioctl(4, LOOP_CLR_FD [pid 5035] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5035] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1," [pid 5032] <... mount resumed>) = -1 EEXIST (File exists) [pid 5032] ioctl(4, LOOP_CLR_FD [pid 5038] <... mount resumed>) = -1 EEXIST (File exists) [pid 5038] ioctl(4, LOOP_CLR_FD [pid 5035] <... mount resumed>) = -1 EEXIST (File exists) [ 68.727274][ T5032] BTRFS warning: duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor303 (5032) [ 68.742560][ T5038] BTRFS warning: duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor303 (5038) [ 68.757566][ T5035] BTRFS warning: duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor303 (5035) [pid 5035] ioctl(4, LOOP_CLR_FD [pid 5034] <... ioctl resumed>) = 0 [pid 5034] close(4) = 0 [pid 5034] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5028] <... futex resumed>) = 0 [pid 5028] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5028] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5034] <... futex resumed>) = 1 [pid 5034] open("./file0", O_RDONLY) = 3 [pid 5034] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5028] <... futex resumed>) = 0 [pid 5028] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5028] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5034] <... futex resumed>) = 1 [pid 5034] ioctl(3, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001940) = -1 ENOTTY (Inappropriate ioctl for device) [pid 5034] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5028] <... futex resumed>) = 0 [pid 5028] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5028] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5034] <... futex resumed>) = 1 [pid 5034] ioctl(3, BTRFS_IOC_BALANCE_V2, {flags=0}) = -1 ENOTTY (Inappropriate ioctl for device) [pid 5034] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5028] <... futex resumed>) = 0 [pid 5028] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5028] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5034] <... futex resumed>) = 1 [pid 5034] openat(AT_FDCWD, "./file0", O_RDONLY) = 4 [pid 5034] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5028] <... futex resumed>) = 0 [pid 5028] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5028] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5034] <... futex resumed>) = 1 [pid 5034] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL) = -1 ENOTTY (Inappropriate ioctl for device) [pid 5034] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5028] <... futex resumed>) = 0 [pid 5034] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE [pid 5028] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5034] <... ioctl resumed>) = -1 ENOTTY (Inappropriate ioctl for device) [pid 5028] <... futex resumed>) = 0 [pid 5034] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5028] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5034] <... futex resumed>) = 0 [pid 5028] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5034] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5028] exit_group(0 [pid 5034] <... futex resumed>) = ? [pid 5028] <... exit_group resumed>) = ? [pid 5034] +++ exited with 0 +++ [pid 5028] +++ exited with 0 +++ [pid 5020] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5028, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=35 /* 0.35 s */} --- [pid 5020] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5020] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5020] close(3) = 0 [pid 5020] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555565b690) = 5052 ./strace-static-x86_64: Process 5052 attached [pid 5052] set_robust_list(0x55555565b6a0, 24) = 0 [pid 5052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5052] setpgid(0, 0) = 0 [pid 5052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1000", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5052] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, NULL, 8) = 0 [pid 5052] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5052] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7faefa263000 [pid 5052] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5052] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5052] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faefa283990, parent_tid=0x7faefa283990, exit_signal=0, stack=0x7faefa263000, stack_size=0x20300, tls=0x7faefa2836c0} => {parent_tid=[5055]}, 88) = 5055 [pid 5052] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5052] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5052] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5055 attached [pid 5055] rseq(0x7faefa283fe0, 0x20, 0, 0x53053053) = 0 [pid 5055] set_robust_list(0x7faefa2839a0, 24) = 0 [pid 5055] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5055] memfd_create("syzkaller", 0) = 3 [pid 5055] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faef1e63000 [ 68.984044][ T5033] BTRFS info (device loop3): enabling ssd optimizations [ 68.999304][ T5033] BTRFS info (device loop3): auto enabling async discard [ 69.044255][ T5033] BTRFS info (device loop3): rebuilding free space tree [ 69.078765][ T5033] BTRFS info (device loop3): disabling free space tree [pid 5039] <... ioctl resumed>) = 0 [pid 5039] close(4) = 0 [pid 5039] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5039] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5031] <... futex resumed>) = 0 [pid 5031] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5039] <... futex resumed>) = 0 [pid 5031] <... futex resumed>) = 1 [pid 5039] open("./file0", O_RDONLY) = 3 [pid 5031] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5039] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5031] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5039] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5031] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5039] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5039] ioctl(3, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001940) = -1 ENOTTY (Inappropriate ioctl for device) [pid 5039] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5039] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 [pid 5031] <... futex resumed>) = 1 [pid 5031] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5039] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5031] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5031] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5039] <... futex resumed>) = 0 [pid 5031] <... futex resumed>) = 1 [pid 5039] ioctl(3, BTRFS_IOC_BALANCE_V2, {flags=0}) = -1 ENOTTY (Inappropriate ioctl for device) [pid 5031] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5039] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5031] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5039] <... futex resumed>) = 0 [pid 5031] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [ 69.085810][ T5033] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [pid 5039] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5031] <... futex resumed>) = 0 [pid 5039] <... openat resumed>) = 4 [pid 5039] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5039] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5031] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5031] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5039] <... futex resumed>) = 0 [pid 5031] <... futex resumed>) = 1 [pid 5039] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL [pid 5031] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5039] <... ioctl resumed>) = -1 ENOTTY (Inappropriate ioctl for device) [pid 5039] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5031] <... futex resumed>) = 0 [pid 5039] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5031] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5039] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5039] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE [pid 5031] <... futex resumed>) = 0 [pid 5039] <... ioctl resumed>) = -1 ENOTTY (Inappropriate ioctl for device) [pid 5039] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5039] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5031] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5031] exit_group(0 [pid 5039] <... futex resumed>) = ? [pid 5031] <... exit_group resumed>) = ? [pid 5039] +++ exited with 0 +++ [pid 5031] +++ exited with 0 +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5031, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=38 /* 0.38 s */} --- [pid 5021] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5021] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5021] close(3) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555565b690) = 5058 ./strace-static-x86_64: Process 5058 attached [pid 5058] set_robust_list(0x55555565b6a0, 24) = 0 [pid 5058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5058] setpgid(0, 0) = 0 [ 69.123261][ T5033] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 69.146123][ T5033] BTRFS info (device loop3): checking UUID tree [pid 5058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5058] write(3, "1000", 4) = 4 [pid 5033] <... mount resumed>) = 0 [pid 5058] close(3) = 0 [pid 5058] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5033] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5058] <... futex resumed>) = 0 [pid 5033] <... openat resumed>) = 3 [pid 5033] chdir("./file0" [pid 5058] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, [pid 5033] <... chdir resumed>) = 0 [pid 5058] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5058] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7faefa263000 [pid 5033] ioctl(4, LOOP_CLR_FD [pid 5058] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE [pid 5033] <... ioctl resumed>) = 0 [pid 5058] <... mprotect resumed>) = 0 [pid 5033] close(4 [pid 5058] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5033] <... close resumed>) = 0 [pid 5058] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5058] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faefa283990, parent_tid=0x7faefa283990, exit_signal=0, stack=0x7faefa263000, stack_size=0x20300, tls=0x7faefa2836c0} => {parent_tid=[5059]}, 88) = 5059 [pid 5058] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5058] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5058] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 5059 attached [pid 5059] rseq(0x7faefa283fe0, 0x20, 0, 0x53053053) = 0 [pid 5059] set_robust_list(0x7faefa2839a0, 24) = 0 [pid 5059] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5059] memfd_create("syzkaller", 0 [pid 5033] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5059] <... memfd_create resumed>) = 3 [pid 5033] <... futex resumed>) = 1 [pid 5025] <... futex resumed>) = 0 [pid 5033] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5025] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5033] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5025] <... futex resumed>) = 0 [pid 5059] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5033] open("./file0", O_RDONLY [pid 5025] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5059] <... mmap resumed>) = 0x7faef1e63000 [pid 5033] <... open resumed>) = 4 [pid 5033] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5025] <... futex resumed>) = 0 [pid 5033] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5025] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5038] <... ioctl resumed>) = 0 [pid 5033] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5025] <... futex resumed>) = 0 [pid 5038] close(4 [pid 5033] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001940 [pid 5025] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5038] <... close resumed>) = 0 [pid 5033] <... ioctl resumed>) = 0 [pid 5033] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5038] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5033] <... futex resumed>) = 1 [pid 5025] <... futex resumed>) = 0 [pid 5038] <... futex resumed>) = 1 [pid 5030] <... futex resumed>) = 0 [pid 5030] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5025] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5033] ioctl(4, BTRFS_IOC_BALANCE_V2, {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, data={profiles=0, usage=0, devid=makedev(0, 0), pstart=0, pend=0, vstart=0, vend=0, target=0, flags=0}, meta={profiles=0, usage=0, devid=makedev(0, 0), pstart=0, pend=0, vstart=0, vend=0, target=0, flags=0}} [pid 5025] <... futex resumed>) = 0 [pid 5025] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5038] open("./file0", O_RDONLY) = 3 [pid 5038] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5030] <... futex resumed>) = 0 [pid 5030] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5038] ioctl(3, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001940) = 0 [pid 5038] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5030] <... futex resumed>) = 0 [pid 5038] ioctl(3, BTRFS_IOC_BALANCE_V2, {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, data={profiles=0, usage=0, devid=makedev(0, 0), pstart=0, pend=0, vstart=0, vend=0, target=0, flags=0}, meta={profiles=0, usage=0, devid=makedev(0, 0), pstart=0, pend=0, vstart=0, vend=0, target=0, flags=0}} [pid 5030] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5032] <... ioctl resumed>) = 0 [pid 5032] close(4) = 0 [pid 5032] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5027] <... futex resumed>) = 0 [pid 5032] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5027] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5032] <... futex resumed>) = 0 [pid 5027] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5032] open("./file0", O_RDONLY) = 3 [pid 5032] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5027] <... futex resumed>) = 0 [pid 5032] ioctl(3, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001940 [pid 5027] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5032] <... ioctl resumed>) = 0 [pid 5027] <... futex resumed>) = 0 [ 69.310050][ T5033] BTRFS info (device loop3): balance: start -d -m [pid 5027] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5038] <... ioctl resumed>) = -1 EINPROGRESS (Operation now in progress) [pid 5035] <... ioctl resumed>) = 0 [pid 5032] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5025] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5030] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5032] <... futex resumed>) = 1 [pid 5030] futex(0x7faefa35261c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5032] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5030] <... futex resumed>) = 0 [pid 5030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7faef2e42000 [pid 5030] mprotect(0x7faef2e43000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5030] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5030] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faef2e62990, parent_tid=0x7faef2e62990, exit_signal=0, stack=0x7faef2e42000, stack_size=0x20300, tls=0x7faef2e626c0}./strace-static-x86_64: Process 5061 attached [pid 5038] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5035] close(4 [pid 5027] <... futex resumed>) = 0 [pid 5025] futex(0x7faefa35261c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5061] rseq(0x7faef2e62fe0, 0x20, 0, 0x53053053 [pid 5038] <... futex resumed>) = 0 [pid 5035] <... close resumed>) = 0 [pid 5030] <... clone3 resumed> => {parent_tid=[5061]}, 88) = 5061 [pid 5027] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5025] <... futex resumed>) = 0 [pid 5030] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5030] futex(0x7faefa352618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] futex(0x7faefa35261c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5038] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5027] <... futex resumed>) = 1 [pid 5025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5027] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5032] <... futex resumed>) = 0 [pid 5025] <... mmap resumed>) = 0x7faef2e42000 [pid 5032] ioctl(3, BTRFS_IOC_BALANCE_V2, {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, data={profiles=0, usage=0, devid=makedev(0, 0), pstart=0, pend=0, vstart=0, vend=0, target=0, flags=0}, meta={profiles=0, usage=0, devid=makedev(0, 0), pstart=0, pend=0, vstart=0, vend=0, target=0, flags=0}} [pid 5025] mprotect(0x7faef2e43000, 131072, PROT_READ|PROT_WRITE [pid 5032] <... ioctl resumed>) = -1 EINPROGRESS (Operation now in progress) [pid 5032] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5032] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5027] <... futex resumed>) = 0 [pid 5027] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5025] <... mprotect resumed>) = 0 [pid 5032] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5027] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5032] <... openat resumed>) = 4 [pid 5025] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5061] <... rseq resumed>) = 0 [pid 5035] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5032] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5025] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5061] set_robust_list(0x7faef2e629a0, 24 [pid 5032] <... futex resumed>) = 1 [pid 5027] <... futex resumed>) = 0 [pid 5025] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faef2e62990, parent_tid=0x7faef2e62990, exit_signal=0, stack=0x7faef2e42000, stack_size=0x20300, tls=0x7faef2e626c0} [pid 5035] <... futex resumed>) = 1 [pid 5026] <... futex resumed>) = 0 [pid 5061] <... set_robust_list resumed>) = 0 [pid 5032] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5027] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5026] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5061] rt_sigprocmask(SIG_SETMASK, [], [pid 5035] open("./file0", O_RDONLY [pid 5032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5027] <... futex resumed>) = 0 [pid 5026] <... futex resumed>) = 0 [pid 5061] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5035] <... open resumed>) = 3 [pid 5032] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL [pid 5027] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5026] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5025] <... clone3 resumed> => {parent_tid=[5062]}, 88) = 5062 [pid 5061] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5035] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5026] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5025] rt_sigprocmask(SIG_SETMASK, [], [pid 5061] <... openat resumed>) = 4 [pid 5035] <... futex resumed>) = 0 [pid 5026] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5061] futex(0x7faefa35261c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5035] ioctl(3, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001940 [pid 5026] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5025] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 5062 attached [pid 5062] rseq(0x7faef2e62fe0, 0x20, 0, 0x53053053) = 0 [pid 5062] set_robust_list(0x7faef2e629a0, 24) = 0 [pid 5062] rt_sigprocmask(SIG_SETMASK, [], [pid 5061] <... futex resumed>) = 1 [pid 5035] <... ioctl resumed>) = 0 [ 69.350419][ T5033] BTRFS info (device loop3): relocating block group 6881280 flags data|metadata [pid 5025] futex(0x7faefa352618, FUTEX_WAKE_PRIVATE, 1000000 [pid 5030] <... futex resumed>) = 0 [pid 5061] futex(0x7faefa352618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5062] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5030] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5025] <... futex resumed>) = 0 [pid 5035] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5038] <... futex resumed>) = 0 [pid 5030] <... futex resumed>) = 1 [pid 5025] futex(0x7faefa35261c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5062] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5035] <... futex resumed>) = 1 [pid 5026] <... futex resumed>) = 0 [pid 5062] <... openat resumed>) = 5 [pid 5038] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL [pid 5035] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5030] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5026] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5062] futex(0x7faefa35261c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5035] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5026] <... futex resumed>) = 0 [pid 5062] <... futex resumed>) = 1 [pid 5035] ioctl(3, BTRFS_IOC_BALANCE_V2, {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, data={profiles=0, usage=0, devid=makedev(0, 0), pstart=0, pend=0, vstart=0, vend=0, target=0, flags=0}, meta={profiles=0, usage=0, devid=makedev(0, 0), pstart=0, pend=0, vstart=0, vend=0, target=0, flags=0}} [pid 5026] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5025] <... futex resumed>) = 0 [pid 5062] futex(0x7faefa352618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5035] <... ioctl resumed>) = -1 EINPROGRESS (Operation now in progress) [pid 5025] futex(0x7faefa352618, FUTEX_WAKE_PRIVATE, 1000000 [pid 5035] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5062] <... futex resumed>) = 0 [pid 5035] <... futex resumed>) = 1 [pid 5026] <... futex resumed>) = 0 [pid 5025] <... futex resumed>) = 1 [pid 5062] ioctl(5, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL [pid 5035] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5026] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5025] futex(0x7faefa35261c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5035] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5026] <... futex resumed>) = 0 [pid 5035] openat(AT_FDCWD, "./file0", O_RDONLY [pid 5026] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5035] <... openat resumed>) = 4 [pid 5035] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5026] <... futex resumed>) = 0 [pid 5035] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL [pid 5026] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5026] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5027] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5027] futex(0x7faefa35261c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5027] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7faef2e42000 [pid 5027] mprotect(0x7faef2e43000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5027] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5027] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faef2e62990, parent_tid=0x7faef2e62990, exit_signal=0, stack=0x7faef2e42000, stack_size=0x20300, tls=0x7faef2e626c0} [pid 5030] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5030] futex(0x7faefa352618, FUTEX_WAKE_PRIVATE, 1000000 [pid 5027] <... clone3 resumed> => {parent_tid=[5063]}, 88) = 5063 ./strace-static-x86_64: Process 5063 attached [pid 5061] <... futex resumed>) = 0 [pid 5030] <... futex resumed>) = 1 [pid 5027] rt_sigprocmask(SIG_SETMASK, [], [pid 5061] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE [pid 5030] futex(0x7faefa35261c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5027] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5027] futex(0x7faefa352618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5027] futex(0x7faefa35261c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5063] rseq(0x7faef2e62fe0, 0x20, 0, 0x53053053) = 0 [pid 5063] set_robust_list(0x7faef2e629a0, 24) = 0 [pid 5063] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5063] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE [pid 5025] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5061] <... ioctl resumed>) = -1 ENOTCONN (Transport endpoint is not connected) [pid 5063] <... ioctl resumed>) = -1 ENOTCONN (Transport endpoint is not connected) [pid 5062] <... ioctl resumed>) = 0 [pid 5038] <... ioctl resumed>) = 0 [pid 5035] <... ioctl resumed>) = 0 [pid 5033] <... ioctl resumed>) = -1 ECANCELED (Operation canceled) [pid 5032] <... ioctl resumed>) = 0 [pid 5063] futex(0x7faefa35261c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5062] futex(0x7faefa35261c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5061] futex(0x7faefa35261c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5038] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5035] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5032] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5026] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5025] futex(0x7faefa352618, FUTEX_WAKE_PRIVATE, 1000000 [pid 5033] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5063] <... futex resumed>) = 1 [pid 5062] <... futex resumed>) = 0 [pid 5061] <... futex resumed>) = 1 [pid 5038] <... futex resumed>) = 0 [pid 5035] <... futex resumed>) = 0 [pid 5032] <... futex resumed>) = 0 [pid 5030] <... futex resumed>) = 0 [pid 5027] <... futex resumed>) = 0 [pid 5026] futex(0x7faefa352608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5025] <... futex resumed>) = 0 [pid 5033] <... futex resumed>) = 0 [pid 5063] futex(0x7faefa352618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5062] ioctl(5, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE [pid 5061] futex(0x7faefa352618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5055] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5038] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5035] ioctl(4, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE [pid 5032] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5030] exit_group(0 [pid 5027] exit_group(0 [pid 5026] <... futex resumed>) = 0 [pid 5025] futex(0x7faefa35261c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5063] <... futex resumed>) = ? [pid 5062] <... ioctl resumed>) = -1 ENOTCONN (Transport endpoint is not connected) [pid 5061] <... futex resumed>) = ? [pid 5038] <... futex resumed>) = ? [pid 5035] <... ioctl resumed>) = -1 ENOTCONN (Transport endpoint is not connected) [pid 5033] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5032] <... futex resumed>) = ? [pid 5030] <... exit_group resumed>) = ? [pid 5027] <... exit_group resumed>) = ? [pid 5026] futex(0x7faefa35260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5062] futex(0x7faefa35261c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5038] +++ exited with 0 +++ [pid 5032] +++ exited with 0 +++ [pid 5062] <... futex resumed>) = 1 [pid 5025] <... futex resumed>) = 0 [pid 5062] futex(0x7faefa352618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5025] exit_group(0 [pid 5062] <... futex resumed>) = ? [pid 5063] +++ exited with 0 +++ [pid 5025] <... exit_group resumed>) = ? [pid 5062] +++ exited with 0 +++ [pid 5061] +++ exited with 0 +++ [pid 5035] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5033] <... futex resumed>) = ? [pid 5030] +++ exited with 0 +++ [pid 5027] +++ exited with 0 +++ [pid 5035] <... futex resumed>) = 1 [pid 5033] +++ exited with 0 +++ [pid 5026] <... futex resumed>) = 0 [pid 5025] +++ exited with 0 +++ [pid 5024] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5027, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=34 /* 0.34 s */} --- [pid 5023] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5030, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=37 /* 0.37 s */} --- [pid 5035] futex(0x7faefa352608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5026] exit_group(0 [pid 5035] <... futex resumed>) = ? [pid 5026] <... exit_group resumed>) = ? [pid 5035] +++ exited with 0 +++ [pid 5026] +++ exited with 0 +++ [pid 5022] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5025, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=50 /* 0.50 s */} --- [pid 5024] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5023] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5022] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5024] <... openat resumed>) = 3 [pid 5023] <... openat resumed>) = 3 [pid 5022] <... openat resumed>) = 3 [pid 5019] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5026, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=31 /* 0.31 s */} --- [pid 5024] ioctl(3, LOOP_CLR_FD [pid 5023] ioctl(3, LOOP_CLR_FD [pid 5022] ioctl(3, LOOP_CLR_FD [pid 5024] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5019] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5022] <... ioctl resumed>) = 0 [pid 5024] close(3 [pid 5023] <... ioctl resumed>) = -1 ENXIO (No such device or address) [ 69.459088][ T5033] BTRFS info (device loop3): balance: canceled [pid 5024] <... close resumed>) = 0 [pid 5023] close(3 [pid 5022] close(3 [pid 5019] <... openat resumed>) = 3 [pid 5024] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5023] <... close resumed>) = 0 [pid 5022] <... close resumed>) = 0 [pid 5019] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5022] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5023] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5024] <... clone resumed>, child_tidptr=0x55555565b690) = 5064 [pid 5019] close(3) = 0 [pid 5022] <... clone resumed>, child_tidptr=0x55555565b690) = 5065 [pid 5019] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5065 attached [pid 5065] set_robust_list(0x55555565b6a0, 24) = 0 [pid 5023] <... clone resumed>, child_tidptr=0x55555565b690) = 5066 [pid 5019] <... clone resumed>, child_tidptr=0x55555565b690) = 5067 [pid 5065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5065] setpgid(0, 0) = 0 [pid 5065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5064 attached ./strace-static-x86_64: Process 5066 attached ./strace-static-x86_64: Process 5067 attached [pid 5066] set_robust_list(0x55555565b6a0, 24) = 0 [pid 5067] set_robust_list(0x55555565b6a0, 24 [pid 5066] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5064] set_robust_list(0x55555565b6a0, 24 [pid 5065] <... openat resumed>) = 3 [pid 5067] <... set_robust_list resumed>) = 0 [pid 5064] <... set_robust_list resumed>) = 0 [pid 5066] <... prctl resumed>) = 0 [pid 5065] write(3, "1000", 4 [pid 5066] setpgid(0, 0 [pid 5065] <... write resumed>) = 4 [pid 5066] <... setpgid resumed>) = 0 [pid 5065] close(3 [pid 5066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5065] <... close resumed>) = 0 [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5066] <... openat resumed>) = 3 [pid 5065] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5064] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5066] write(3, "1000", 4 [pid 5065] <... futex resumed>) = 0 [pid 5067] <... prctl resumed>) = 0 [pid 5066] <... write resumed>) = 4 [pid 5065] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, [pid 5064] <... prctl resumed>) = 0 [pid 5066] close(3 [pid 5065] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5067] setpgid(0, 0 [pid 5066] <... close resumed>) = 0 [pid 5065] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5064] setpgid(0, 0 [pid 5066] futex(0x7faefa35260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5065] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5067] <... setpgid resumed>) = 0 [pid 5066] <... futex resumed>) = 0 [pid 5065] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5064] <... setpgid resumed>) = 0 [pid 5067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5066] rt_sigaction(SIGRT_1, {sa_handler=0x7faefa2ec4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7faefa2ddb90}, [pid 5065] <... mmap resumed>) = 0x7faefa263000 [pid 5066] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5065] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE [pid 5064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5066] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5065] <... mprotect resumed>) = 0 [pid 5067] <... openat resumed>) = 3 [pid 5066] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5065] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5064] <... openat resumed>) = 3 [pid 5067] write(3, "1000", 4 [pid 5066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5065] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5064] write(3, "1000", 4 [pid 5067] <... write resumed>) = 4 [pid 5066] <... mmap resumed>) = 0x7faefa263000 [pid 5065] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7faefa283990, parent_tid=0x7faefa283990, exit_signal=0, stack=0x7faefa263000, stack_size=0x20300, tls=0x7faefa2836c0} [pid 5067] close(3 [pid 5066] mprotect(0x7faefa264000, 131072, PROT_READ|PROT_WRITE [pid 5064] <... write resumed>) = 4 [pid 5067] <... close resumed>) = 0 [pid 5066] <... mprotect resumed>) = 0 [pid 5065] <... clone3 resumed> => {parent_tid=[5068]}, 88) = 5068 [pid 5064] close(3